Security Affairs

SEPTEMBER 12, 2019

This operation is similar to the threat group’s August 2018 campaign , using compromised university resources to send library-themed phishing emails.” The hackers registered at least 20 new domain names through the Freenom domain provider that offers free top-level domain names.

Phishing 80

Phishing Libraries File names Metadata 80

Security Affairs

SEPTEMBER 4, 2019

JSWorm encrypts all the user files appending a new extension to their name. During the encryption phase, the ransomware creates an HTML Application “JSWRM-DECRYPT.hta” in each folder it encounters. The HTA file corresponds to the ransom window shown in Figure 1. Figure 3: Extensions excluded from encryption.

Ransomware 83

Ransomware Encryption File names Libraries 83

Security Affairs

FEBRUARY 19, 2019

The phishing email contains a.zip file named “slavneft.zakaz.zip”, which means something like “slavneft order” in English, showing a direct reference to “Slavneft”. It contains a russian speaking JavaScript file named “«??? «??? «?????????» ??????????? ??????”, Background of the infected machine, after encryption phase.

Ransomware 77

Ransomware Mining File names Encryption 77

Security Affairs

MARCH 2, 2019

File name: patent-2019-02-20T093A283A05-1.xls However, as already mentioned at the beginning of the technical analysis, SI-LAB team obtained two types of files, namely xls and doc archives. File name : 68131_46_20190219.doc Analyzing the MSI file – The installer/dropper of infamous FlawedAmmyy.

File names 88

File names Phishing Libraries IT 88

Security Affairs

FEBRUARY 23, 2019

Once the malware has infected a system drops two plain text files, one is a ransom note called “_FILES_ENCRYPTED_README.txt,” which gives information to the victim on what has happened and instruction to pay the ransom. Like other ransomware, the operators allow victims to unlock a file for free.

Ransomware 91

Ransomware Encryption File names Libraries 91

Security Affairs

FEBRUARY 16, 2021

dll: Windows legitimate DLL for runtime dependencies – MICROSOFT® C RUNTIME LIBRARY. dll: Windows legitimate DLL for runtime dependencies – MICROSOFT® C RUNTIME LIBRARY. Usually, executables using the side-by-side feature will have these resources located in the embedded manifest file. exe8CBB75FEBFB4B0B7C3B6D3613386220C.

Libraries 122

Libraries Communications Phishing Encryption 122

eSecurity Planet

FEBRUARY 3, 2021

Presenting itself as a JPG file named “gracious_truth.jpg,” Teardrop is a memory-only dropper built to enter a network seamlessly and replace the embedded payload. The problem: software can be mighty complex, made up of components, development frameworks, operating system features, libraries, and more. Encryption.

Cybersecurity 62

Cybersecurity Access Authentication Cloud 62

Security Affairs

JULY 7, 2020

However, in this new release, two DLL files are distributed. VBS file leverages the Windows rundll32 library to inject the first DLL into memory (P-14-7.dll), Figure 6: Deofuscated VBS file – Lampion trojan July 2020. LNK files from the Windows startup folder. VBS files from the Windows startup folder.

Communications 101

Communications Cloud Phishing Encryption 101