Analysis

  • max time kernel
    121s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231201-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231201-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07-12-2023 14:32

General

  • Target

    Remittance advice.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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Remittance advice.exe
    "C:\Users\Admin\AppData\Local\Temp\Remittance advice.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1172
    • C:\Users\Admin\AppData\Local\Temp\Remittance advice.exe
      "C:\Users\Admin\AppData\Local\Temp\Remittance advice.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3668

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    1KB

    MD5

    8ec831f3e3a3f77e4a7b9cd32b48384c

    SHA1

    d83f09fd87c5bd86e045873c231c14836e76a05c

    SHA256

    7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

    SHA512

    26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

  • memory/1172-10-0x000000000A940000-0x000000000A9DC000-memory.dmp

    Filesize

    624KB

  • memory/1172-14-0x0000000074E60000-0x0000000075610000-memory.dmp

    Filesize

    7.7MB

  • memory/1172-9-0x0000000008290000-0x000000000830C000-memory.dmp

    Filesize

    496KB

  • memory/1172-4-0x00000000058B0000-0x00000000058C0000-memory.dmp

    Filesize

    64KB

  • memory/1172-5-0x0000000005720000-0x000000000572A000-memory.dmp

    Filesize

    40KB

  • memory/1172-6-0x0000000005BE0000-0x0000000005BFA000-memory.dmp

    Filesize

    104KB

  • memory/1172-7-0x00000000069C0000-0x00000000069C8000-memory.dmp

    Filesize

    32KB

  • memory/1172-8-0x00000000069E0000-0x00000000069EA000-memory.dmp

    Filesize

    40KB

  • memory/1172-3-0x0000000005670000-0x0000000005702000-memory.dmp

    Filesize

    584KB

  • memory/1172-2-0x0000000005C20000-0x00000000061C4000-memory.dmp

    Filesize

    5.6MB

  • memory/1172-1-0x0000000074E60000-0x0000000075610000-memory.dmp

    Filesize

    7.7MB

  • memory/1172-0-0x0000000000B10000-0x0000000000BD8000-memory.dmp

    Filesize

    800KB

  • memory/3668-20-0x0000000005570000-0x0000000005580000-memory.dmp

    Filesize

    64KB

  • memory/3668-17-0x0000000005570000-0x0000000005580000-memory.dmp

    Filesize

    64KB

  • memory/3668-16-0x0000000074E60000-0x0000000075610000-memory.dmp

    Filesize

    7.7MB

  • memory/3668-15-0x00000000055F0000-0x0000000005656000-memory.dmp

    Filesize

    408KB

  • memory/3668-18-0x0000000006AF0000-0x0000000006B40000-memory.dmp

    Filesize

    320KB

  • memory/3668-19-0x0000000074E60000-0x0000000075610000-memory.dmp

    Filesize

    7.7MB

  • memory/3668-11-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB