Analysis

  • max time kernel
    127s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-03-2024 15:00

General

  • Target

    JUSTIF.TRANSF..exe

  • Size

    798KB

  • MD5

    fb029eca94061f0186fc8701bdc85c77

  • SHA1

    08231601ad4894e80dc1bd323456ed5e4cacb13c

  • SHA256

    d2a44cec8dbbd996cc4b5780f907f33fd4040c44519653503f4b17f3288149a6

  • SHA512

    f46da4da503d580eb9fb9648141375f1a5c244d6832a7c426d65337d0e7cec6f515ae1ee9a0921002c4d04b99b01b09775ffe8823e9a557f0ff78aee57cf07d4

  • SSDEEP

    12288:R6dum27u49Zr7EwcCiCXZHvyK7m2GtW8rTRpJ9ShOWQ7G/GFH9eo:R6dufltdcCpPyPW8rTRp6I8+deo

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot7189076260:AAHEL9QuHqQcKXN8kPXNO5BpYSd3XtQOqFg/

Signatures

  • AgentTesla

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

  • UAC bypass 3 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Windows security modification 2 TTPs 3 IoCs
  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • Looks up external IP address via web service 2 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 35 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JUSTIF.TRANSF..exe
    "C:\Users\Admin\AppData\Local\Temp\JUSTIF.TRANSF..exe"
    1⤵
    • UAC bypass
    • Windows security bypass
    • Checks computer location settings
    • Windows security modification
    • Checks whether UAC is enabled
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:2508
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\JUSTIF.TRANSF..exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:812
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:2712
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
      2⤵
        PID:4864

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Privilege Escalation

    Abuse Elevation Control Mechanism

    1
    T1548

    Bypass User Account Control

    1
    T1548.002

    Defense Evasion

    Abuse Elevation Control Mechanism

    1
    T1548

    Bypass User Account Control

    1
    T1548.002

    Impair Defenses

    3
    T1562

    Disable or Modify Tools

    3
    T1562.001

    Modify Registry

    4
    T1112

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    3
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ljdf4kzu.uc5.ps1
      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • memory/812-7-0x00007FFD45910000-0x00007FFD463D1000-memory.dmp
      Filesize

      10.8MB

    • memory/812-26-0x00007FFD45910000-0x00007FFD463D1000-memory.dmp
      Filesize

      10.8MB

    • memory/812-22-0x000001A9CB750000-0x000001A9CB760000-memory.dmp
      Filesize

      64KB

    • memory/812-21-0x000001A9CB750000-0x000001A9CB760000-memory.dmp
      Filesize

      64KB

    • memory/812-18-0x000001A9CB860000-0x000001A9CB882000-memory.dmp
      Filesize

      136KB

    • memory/812-8-0x000001A9CB750000-0x000001A9CB760000-memory.dmp
      Filesize

      64KB

    • memory/2508-5-0x00000226B0320000-0x00000226B03B4000-memory.dmp
      Filesize

      592KB

    • memory/2508-27-0x00007FFD45910000-0x00007FFD463D1000-memory.dmp
      Filesize

      10.8MB

    • memory/2508-0-0x0000022695B30000-0x0000022695B6A000-memory.dmp
      Filesize

      232KB

    • memory/2508-4-0x00000226977D0000-0x00000226977EE000-memory.dmp
      Filesize

      120KB

    • memory/2508-1-0x00007FFD45910000-0x00007FFD463D1000-memory.dmp
      Filesize

      10.8MB

    • memory/2508-2-0x00000226B0210000-0x00000226B0220000-memory.dmp
      Filesize

      64KB

    • memory/2508-3-0x00000226B21E0000-0x00000226B2256000-memory.dmp
      Filesize

      472KB

    • memory/2712-20-0x0000000075450000-0x0000000075C00000-memory.dmp
      Filesize

      7.7MB

    • memory/2712-23-0x0000000005620000-0x0000000005686000-memory.dmp
      Filesize

      408KB

    • memory/2712-19-0x0000000005A30000-0x0000000005FD4000-memory.dmp
      Filesize

      5.6MB

    • memory/2712-6-0x0000000000400000-0x0000000000442000-memory.dmp
      Filesize

      264KB

    • memory/2712-28-0x0000000006BB0000-0x0000000006C00000-memory.dmp
      Filesize

      320KB

    • memory/2712-29-0x0000000006CA0000-0x0000000006D32000-memory.dmp
      Filesize

      584KB

    • memory/2712-30-0x0000000006E30000-0x0000000006E3A000-memory.dmp
      Filesize

      40KB

    • memory/2712-31-0x0000000075450000-0x0000000075C00000-memory.dmp
      Filesize

      7.7MB