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Analysis

  • max time kernel
    146s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/07/2023, 06:23

General

  • Target

    ORDER-2023712_List.pdf.js

  • Size

    7KB

  • MD5

    5a38171c53f1cab430fc10189ee816ba

  • SHA1

    f5338253970c420bf79762a24baf9826428e4b05

  • SHA256

    33bedb6621680b9442108ef0b9a191b75ea758aa4561e7c3f51c98c267b9453e

  • SHA512

    2d2313c0e82f26c1f3ba9d5449cfaeec52c0c6e7b21171ab62fc41a638cac0af603ecf21e1c059775e7392e032b8f4ef03dc8160a7c25244b814a19e6cbb32a1

  • SSDEEP

    192:gzl7EclLWXtZ1C49sUbo7SXAw7Eyf1GDeN2vbat7Wqm+:g0h

Malware Config

Extracted

Family

agenttesla

Credentials

Extracted

Family

wshrat

C2

http://chongmei33.publicvm.com:7045

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • WSHRAT

    WSHRAT is a variant of Houdini worm and has vbs and js variants.

  • WSHRAT payload 2 IoCs
  • Blocklisted process makes network request 30 IoCs
  • Checks computer location settings 2 TTPs 3 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 5 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Modifies registry class 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe C:\Users\Admin\AppData\Local\Temp\ORDER-2023712_List.pdf.js
    1⤵
    • Blocklisted process makes network request
    • Checks computer location settings
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:4920
    • C:\Windows\System32\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\TGFGYE.vbs"
      2⤵
      • Blocklisted process makes network request
      • Checks computer location settings
      • Drops startup file
      • Adds Run key to start application
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:1792
      • C:\Windows\System32\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\origin.vbs"
        3⤵
        • Checks computer location settings
        • Suspicious use of WriteProcessMemory
        PID:4124
        • C:\Users\Admin\AppData\Local\Tempwinlogon.exe
          "C:\Users\Admin\AppData\Local\Tempwinlogon.exe"
          4⤵
          • Executes dropped EXE
          • Accesses Microsoft Outlook profiles
          • Adds Run key to start application
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • outlook_office_path
          • outlook_win_path
          PID:4268

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\PQKW7621\json[1].json

    Filesize

    323B

    MD5

    0c17abb0ed055fecf0c48bb6e46eb4eb

    SHA1

    a692730c8ec7353c31b94a888f359edb54aaa4c8

    SHA256

    f41e99f954e33e7b0e39930ec8620bf29801efc44275c1ee6b5cfa5e1be202c0

    SHA512

    645a9f2f94461d8a187261b736949df398ece5cfbf1af8653d18d3487ec1269d9f565534c1e249c12f31b3b1a41a8512953b1e991b001fc1360059e3fd494ec3

  • C:\Users\Admin\AppData\Local\Temp\TGFGYE.vbs

    Filesize

    558KB

    MD5

    caec1686fe2f17ceb59db064b80a9b9c

    SHA1

    de3fc1f6f4b94e327eb729a4290975e269f86fbe

    SHA256

    0f7d03b6fe00c7ca6bf1a2325e65db44bdfafcd43397fdc52db335204eb129ac

    SHA512

    375388568c6de97930605573528e3b064353a98eea3d73bf0fed72639dd248232c509d759b5cd0d6926ded263ca40e332d416364f72650bb8c873daa0d20d3b6

  • C:\Users\Admin\AppData\Local\Temp\origin.vbs

    Filesize

    331KB

    MD5

    d593230ad945cc8c2db3237ff31624d4

    SHA1

    a89e668a3026c2158b40489ddc8f211092472e1b

    SHA256

    fbe3fe3d46d3037f1a770e778a69dac55db62929b9571746e19c63ea59b28d88

    SHA512

    938e43724b56bd4a23a122b22b366bc0564f77a1ee1b8b3a576ab2e5c9f6877d36cdb68fcd9f762d617f94b8cf309ad378a2ab321eaf34e5542f5f0cd9ac3846

  • C:\Users\Admin\AppData\Local\Tempwinlogon.exe

    Filesize

    165KB

    MD5

    d78e00882aa872bb8daaa715d7014413

    SHA1

    cb242a2e1d65263d733b45d0cda17ce50cb4e376

    SHA256

    58fe22735658313bf69b6e34aac69887063aa1d9618a1ae1e99822f47087dfe9

    SHA512

    613fed6c36d26fa18544eae2316e6e6e43a6e67eeb31fd043bd2833ca6b5b88b9b1a16db43a592196c365bf1326eac3a4511171d896bfcdcf5454566327e1ac6

  • C:\Users\Admin\AppData\Local\Tempwinlogon.exe

    Filesize

    165KB

    MD5

    d78e00882aa872bb8daaa715d7014413

    SHA1

    cb242a2e1d65263d733b45d0cda17ce50cb4e376

    SHA256

    58fe22735658313bf69b6e34aac69887063aa1d9618a1ae1e99822f47087dfe9

    SHA512

    613fed6c36d26fa18544eae2316e6e6e43a6e67eeb31fd043bd2833ca6b5b88b9b1a16db43a592196c365bf1326eac3a4511171d896bfcdcf5454566327e1ac6

  • C:\Users\Admin\AppData\Local\Tempwinlogon.exe

    Filesize

    165KB

    MD5

    d78e00882aa872bb8daaa715d7014413

    SHA1

    cb242a2e1d65263d733b45d0cda17ce50cb4e376

    SHA256

    58fe22735658313bf69b6e34aac69887063aa1d9618a1ae1e99822f47087dfe9

    SHA512

    613fed6c36d26fa18544eae2316e6e6e43a6e67eeb31fd043bd2833ca6b5b88b9b1a16db43a592196c365bf1326eac3a4511171d896bfcdcf5454566327e1ac6

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\TGFGYE.vbs

    Filesize

    558KB

    MD5

    caec1686fe2f17ceb59db064b80a9b9c

    SHA1

    de3fc1f6f4b94e327eb729a4290975e269f86fbe

    SHA256

    0f7d03b6fe00c7ca6bf1a2325e65db44bdfafcd43397fdc52db335204eb129ac

    SHA512

    375388568c6de97930605573528e3b064353a98eea3d73bf0fed72639dd248232c509d759b5cd0d6926ded263ca40e332d416364f72650bb8c873daa0d20d3b6

  • memory/4268-164-0x0000000004A70000-0x0000000004AD6000-memory.dmp

    Filesize

    408KB

  • memory/4268-163-0x0000000005020000-0x00000000055C4000-memory.dmp

    Filesize

    5.6MB

  • memory/4268-165-0x0000000004B90000-0x0000000004BA0000-memory.dmp

    Filesize

    64KB

  • memory/4268-170-0x0000000005930000-0x0000000005980000-memory.dmp

    Filesize

    320KB

  • memory/4268-171-0x0000000005B50000-0x0000000005D12000-memory.dmp

    Filesize

    1.8MB

  • memory/4268-172-0x0000000005A20000-0x0000000005AB2000-memory.dmp

    Filesize

    584KB

  • memory/4268-173-0x0000000005AE0000-0x0000000005AEA000-memory.dmp

    Filesize

    40KB

  • memory/4268-176-0x0000000004B90000-0x0000000004BA0000-memory.dmp

    Filesize

    64KB

  • memory/4268-162-0x0000000000070000-0x00000000000A0000-memory.dmp

    Filesize

    192KB