Analysis

  • max time kernel
    131s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231130-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231130-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08-12-2023 01:01

General

  • Target

    Purchase order.exe

  • Size

    777KB

  • MD5

    1a27787328335454dd7088c23d47b857

  • SHA1

    49bbde3ef989a9c4c43a4ca026cfc632fcab5136

  • SHA256

    583d249d488a67e338a0bbd3c03d3967fc179e226031bebde9b0913c889c70ac

  • SHA512

    faae3d7056387d240f4bcdb7a03deef3a440d96fc4dc34c6a41c61610f4d676b8afafa6862bb46ec658cb4a9f58c85e5ec566210bd165928674be690240141c5

  • SSDEEP

    12288:3GHhkZ548EdxclMGYCeqflEGhBZ1ZmfMAeiOMK0sXoe1ptHWOj:3uK/pixVGTNvZjl0Gl1n

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.mrgrouppk.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    ~_ShAzIa.MRG2023_~

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • 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.

  • 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
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Purchase order.exe
    "C:\Users\Admin\AppData\Local\Temp\Purchase order.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4628
    • C:\Users\Admin\AppData\Local\Temp\Purchase order.exe
      "C:\Users\Admin\AppData\Local\Temp\Purchase order.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1048
  • C:\Windows\system32\rundll32.exe
    "C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe
    1⤵
      PID:4316
    • C:\Windows\System32\svchost.exe
      C:\Windows\System32\svchost.exe -k UnistackSvcGroup
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:3248

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Purchase order.exe.log

      Filesize

      1KB

      MD5

      8ec831f3e3a3f77e4a7b9cd32b48384c

      SHA1

      d83f09fd87c5bd86e045873c231c14836e76a05c

      SHA256

      7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

      SHA512

      26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

    • memory/1048-19-0x0000000074820000-0x0000000074FD0000-memory.dmp

      Filesize

      7.7MB

    • memory/1048-16-0x00000000055E0000-0x00000000055F0000-memory.dmp

      Filesize

      64KB

    • memory/1048-14-0x0000000074820000-0x0000000074FD0000-memory.dmp

      Filesize

      7.7MB

    • memory/1048-20-0x00000000055E0000-0x00000000055F0000-memory.dmp

      Filesize

      64KB

    • memory/1048-18-0x0000000006B80000-0x0000000006BD0000-memory.dmp

      Filesize

      320KB

    • memory/1048-17-0x00000000054C0000-0x0000000005526000-memory.dmp

      Filesize

      408KB

    • memory/1048-11-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/3248-21-0x000002C132C40000-0x000002C132C50000-memory.dmp

      Filesize

      64KB

    • memory/3248-37-0x000002C132D40000-0x000002C132D50000-memory.dmp

      Filesize

      64KB

    • memory/3248-57-0x000002C13B160000-0x000002C13B161000-memory.dmp

      Filesize

      4KB

    • memory/3248-56-0x000002C13B050000-0x000002C13B051000-memory.dmp

      Filesize

      4KB

    • memory/3248-55-0x000002C13B050000-0x000002C13B051000-memory.dmp

      Filesize

      4KB

    • memory/3248-53-0x000002C13B020000-0x000002C13B021000-memory.dmp

      Filesize

      4KB

    • memory/4628-3-0x0000000004D30000-0x0000000004DC2000-memory.dmp

      Filesize

      584KB

    • memory/4628-8-0x00000000053B0000-0x00000000053BA000-memory.dmp

      Filesize

      40KB

    • memory/4628-6-0x0000000005140000-0x000000000515A000-memory.dmp

      Filesize

      104KB

    • memory/4628-15-0x0000000074820000-0x0000000074FD0000-memory.dmp

      Filesize

      7.7MB

    • memory/4628-1-0x0000000074820000-0x0000000074FD0000-memory.dmp

      Filesize

      7.7MB

    • memory/4628-4-0x0000000004EE0000-0x0000000004EF0000-memory.dmp

      Filesize

      64KB

    • memory/4628-2-0x00000000053D0000-0x0000000005974000-memory.dmp

      Filesize

      5.6MB

    • memory/4628-5-0x0000000004DF0000-0x0000000004DFA000-memory.dmp

      Filesize

      40KB

    • memory/4628-9-0x0000000006780000-0x00000000067FC000-memory.dmp

      Filesize

      496KB

    • memory/4628-0-0x00000000002A0000-0x0000000000368000-memory.dmp

      Filesize

      800KB

    • memory/4628-7-0x0000000005390000-0x0000000005398000-memory.dmp

      Filesize

      32KB

    • memory/4628-10-0x0000000008E50000-0x0000000008EEC000-memory.dmp

      Filesize

      624KB