Resubmissions

13/07/2025, 16:46

250713-vae6raswet8

13/07/2025, 16:45

250713-t9vj2sswd18

01/04/2025, 01:21

250401-bqtvas1vct10

General

  • Target
    01042025_0121_31032025_AI自动化办公表格制作生成工具安装包.rar
  • Size 162KB
  • Sample250401-bqtvas1vct
  • SHA256 b929b4efc4af3e5e34b74e4ed2fda0e46c159742b2f0a9117b54516a25c75a4d
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10

Malware Config

Extracted

Family
  • valleyrat_s2

Version
  • 1.0

C2
  • 43.225.58.178:6666

  • 43.225.58.178:8888

  • 43.225.58.178:7777

Attributes
  • campaign_date

    2025. 3.30

Targets

    • Target
      AI自动化办公表格制作生成工具安装包/steam_api64.dll
    • Size 107KB
    • SHA256 d6387be78d258a820e4cb35ec53c65d52a813b63147488629b56269f6648adc1
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    • ValleyRat

      ValleyRat stage2 is a backdoor written in C++.

    • Valleyrat_s2 family

    • Blocklisted process makes network request

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Suspicious use of SetThreadContext

    • Target
      AI自动化办公表格制作生成工具安装包/双击安装.exe
    • Size 253KB
    • SHA256 a8a42814c253ca5e93e81be5bd69149ff71b9ac3024420614fba37fb0834b3c0
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    • ValleyRat

      ValleyRat stage2 is a backdoor written in C++.

    • Valleyrat_s2 family

    • Blocklisted process makes network request

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks