Analysis

  • max time kernel
    150s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    14-06-2024 07:53

General

  • Target

    a89cae7074a69f416bdcc29ec5860894_JaffaCakes118.exe

  • Size

    597KB

  • MD5

    a89cae7074a69f416bdcc29ec5860894

  • SHA1

    5b7c0e4eba1e79e413d0668c6ee751e45c9d786c

  • SHA256

    a900d839a0b9eb00cdecce3341c7fd63c73c47f0a3a9a3a25381a9f4e8347a68

  • SHA512

    bc08423925bffcb89a82cb8d044d871f74124dfbca7df445a9bcca9d4abafd08bc5de389069d8d828d4ef3e20a39efa00cee6830044d87eaf52775e84a7da1de

  • SSDEEP

    12288:4osspP5Lzf8osspP5LzfcqcWhr5AZ80sCQMw4P:npP5LTLpP5LTfJqZ85Ctw4

Malware Config

Signatures

  • AgentTesla

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

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • 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 1 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a89cae7074a69f416bdcc29ec5860894_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\a89cae7074a69f416bdcc29ec5860894_JaffaCakes118.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2408
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      2⤵
      • Loads dropped DLL
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      • outlook_office_path
      • outlook_win_path
      PID:1308
      • C:\Users\Admin\AppData\Local\Temp\WzR.exe
        "C:\Users\Admin\AppData\Local\Temp\WzR.exe" C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2008

Network

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Modify Registry

1
T1112

Credential Access

Unsecured Credentials

4
T1552

Credentials In Files

3
T1552.001

Credentials in Registry

1
T1552.002

Discovery

System Information Discovery

1
T1082

Collection

Data from Local System

4
T1005

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • \Users\Admin\AppData\Local\Temp\WzR.exe
    Filesize

    10KB

    MD5

    f683769b947501b5a98376619d5938bb

    SHA1

    6a38e4acd9ade0d85697d10683ec84fa0daed11c

    SHA256

    c2cae82e01d954e3a50feaebcd3f75de7416a851ea855d6f0e8aaac84a507ca3

    SHA512

    dbd7a26139c5ef6a409fb247b08eb54c62328edace9a047aac3ca75b8e552572428dbda4efc7836398fa4d2d9e68075e10e2436efcf1f9fc138d69ac440bd556

  • memory/1308-6-0x0000000000400000-0x000000000043A000-memory.dmp
    Filesize

    232KB

  • memory/1308-8-0x0000000000400000-0x000000000043A000-memory.dmp
    Filesize

    232KB

  • memory/1308-10-0x0000000000400000-0x000000000043A000-memory.dmp
    Filesize

    232KB

  • memory/1308-15-0x0000000000470000-0x000000000047A000-memory.dmp
    Filesize

    40KB

  • memory/2408-0-0x0000000074A9E000-0x0000000074A9F000-memory.dmp
    Filesize

    4KB

  • memory/2408-1-0x00000000008C0000-0x000000000095C000-memory.dmp
    Filesize

    624KB

  • memory/2408-2-0x00000000004E0000-0x0000000000500000-memory.dmp
    Filesize

    128KB

  • memory/2408-3-0x0000000000470000-0x0000000000476000-memory.dmp
    Filesize

    24KB

  • memory/2408-4-0x0000000074A90000-0x000000007517E000-memory.dmp
    Filesize

    6.9MB

  • memory/2408-5-0x0000000074A90000-0x000000007517E000-memory.dmp
    Filesize

    6.9MB

  • memory/2408-11-0x0000000074A90000-0x000000007517E000-memory.dmp
    Filesize

    6.9MB