Analysis

  • max time kernel
    157s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10-12-2022 13:38

General

  • Target

    Purchase Order_2241838_20221210_201349-pdf.exe

  • Size

    23KB

  • MD5

    e21cdaf4693263a36d6f3f6d7544bc19

  • SHA1

    91d37dac1d4669e0fc704ddbef4ffae00534d826

  • SHA256

    3e00d864918670e82b26e4dd616644aa3c22ead3495ec6ca6e2588e6a855aad8

  • SHA512

    d636f89d776e57f5eb2905825cc182664c03402cdf864bc8d9573c8dfa981b2952f95777d704ce55caa152a7b10957b7fd38d3738531c87a48b859992cc20a5a

  • SSDEEP

    384:xYglR6cNoHzVZJq/S8frSo62tCT+UuSvwiFawJQl:xX4HzIfrS8fiFaKQl

Malware Config

Extracted

Family

agenttesla

C2

https://discord.com/api/webhooks/1050604372649857074/HCdXn7L3pXjiWpMvSwsznc6mxCQNPxPKiBRfn4IJaLSoWiI7oFa4ZtErxOdAdlW9nPsH

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.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Purchase Order_2241838_20221210_201349-pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\Purchase Order_2241838_20221210_201349-pdf.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:428
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1840
    • C:\Users\Admin\AppData\Local\Temp\Purchase Order_2241838_20221210_201349-pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\Purchase Order_2241838_20221210_201349-pdf.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1368

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/428-132-0x0000000000B40000-0x0000000000B4C000-memory.dmp

    Filesize

    48KB

  • memory/428-133-0x0000000005B00000-0x00000000060A4000-memory.dmp

    Filesize

    5.6MB

  • memory/428-134-0x0000000005550000-0x00000000055E2000-memory.dmp

    Filesize

    584KB

  • memory/428-135-0x00000000054D0000-0x00000000054DA000-memory.dmp

    Filesize

    40KB

  • memory/428-136-0x0000000008B40000-0x0000000008B62000-memory.dmp

    Filesize

    136KB

  • memory/1368-147-0x0000000005300000-0x000000000539C000-memory.dmp

    Filesize

    624KB

  • memory/1368-146-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/1368-145-0x0000000000000000-mapping.dmp

  • memory/1840-140-0x0000000005B70000-0x0000000005BD6000-memory.dmp

    Filesize

    408KB

  • memory/1840-141-0x0000000005BE0000-0x0000000005C46000-memory.dmp

    Filesize

    408KB

  • memory/1840-142-0x00000000061C0000-0x00000000061DE000-memory.dmp

    Filesize

    120KB

  • memory/1840-143-0x0000000007AD0000-0x000000000814A000-memory.dmp

    Filesize

    6.5MB

  • memory/1840-144-0x0000000006640000-0x000000000665A000-memory.dmp

    Filesize

    104KB

  • memory/1840-139-0x00000000054D0000-0x0000000005AF8000-memory.dmp

    Filesize

    6.2MB

  • memory/1840-138-0x00000000028C0000-0x00000000028F6000-memory.dmp

    Filesize

    216KB

  • memory/1840-137-0x0000000000000000-mapping.dmp