Analysis

  • max time kernel
    149s
  • max time network
    51s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-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.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 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 11 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:1868
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      2⤵
      • Checks computer location settings
      • 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:3900
      • C:\Users\Admin\AppData\Local\Temp\GAx.exe
        "C:\Users\Admin\AppData\Local\Temp\GAx.exe" C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1892

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

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

4
T1005

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\GAx.exe
    Filesize

    10KB

    MD5

    f683769b947501b5a98376619d5938bb

    SHA1

    6a38e4acd9ade0d85697d10683ec84fa0daed11c

    SHA256

    c2cae82e01d954e3a50feaebcd3f75de7416a851ea855d6f0e8aaac84a507ca3

    SHA512

    dbd7a26139c5ef6a409fb247b08eb54c62328edace9a047aac3ca75b8e552572428dbda4efc7836398fa4d2d9e68075e10e2436efcf1f9fc138d69ac440bd556

  • memory/1868-1-0x0000000000640000-0x00000000006DC000-memory.dmp
    Filesize

    624KB

  • memory/1868-2-0x0000000002A30000-0x0000000002A50000-memory.dmp
    Filesize

    128KB

  • memory/1868-3-0x0000000002A50000-0x0000000002A56000-memory.dmp
    Filesize

    24KB

  • memory/1868-4-0x0000000074840000-0x0000000074FF0000-memory.dmp
    Filesize

    7.7MB

  • memory/1868-5-0x0000000007AD0000-0x0000000008074000-memory.dmp
    Filesize

    5.6MB

  • memory/1868-6-0x0000000007610000-0x00000000076A2000-memory.dmp
    Filesize

    584KB

  • memory/1868-7-0x0000000007A10000-0x0000000007AAC000-memory.dmp
    Filesize

    624KB

  • memory/1868-0-0x000000007484E000-0x000000007484F000-memory.dmp
    Filesize

    4KB

  • memory/1868-10-0x0000000074840000-0x0000000074FF0000-memory.dmp
    Filesize

    7.7MB

  • memory/1892-30-0x000000006E7E2000-0x000000006E7E3000-memory.dmp
    Filesize

    4KB

  • memory/1892-31-0x000000006E7E0000-0x000000006ED91000-memory.dmp
    Filesize

    5.7MB

  • memory/1892-35-0x000000006E7E0000-0x000000006ED91000-memory.dmp
    Filesize

    5.7MB

  • memory/1892-34-0x000000006E7E2000-0x000000006E7E3000-memory.dmp
    Filesize

    4KB

  • memory/1892-32-0x000000006E7E0000-0x000000006ED91000-memory.dmp
    Filesize

    5.7MB

  • memory/3900-15-0x0000000074840000-0x0000000074FF0000-memory.dmp
    Filesize

    7.7MB

  • memory/3900-11-0x0000000074840000-0x0000000074FF0000-memory.dmp
    Filesize

    7.7MB

  • memory/3900-29-0x0000000006B70000-0x0000000006BC0000-memory.dmp
    Filesize

    320KB

  • memory/3900-8-0x0000000000400000-0x000000000043A000-memory.dmp
    Filesize

    232KB

  • memory/3900-19-0x0000000006C70000-0x0000000006C7A000-memory.dmp
    Filesize

    40KB

  • memory/3900-12-0x0000000074840000-0x0000000074FF0000-memory.dmp
    Filesize

    7.7MB

  • memory/3900-33-0x00000000068F0000-0x00000000068FA000-memory.dmp
    Filesize

    40KB

  • memory/3900-14-0x0000000005ED0000-0x0000000005F36000-memory.dmp
    Filesize

    408KB

  • memory/3900-13-0x00000000056F0000-0x0000000005708000-memory.dmp
    Filesize

    96KB