Analysis

  • max time kernel
    118s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20231023-en
  • resource tags

    arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-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

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 9 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:2436
    • 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:2748

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2436-0-0x0000000000B30000-0x0000000000BF8000-memory.dmp

    Filesize

    800KB

  • memory/2436-1-0x0000000073F30000-0x000000007461E000-memory.dmp

    Filesize

    6.9MB

  • memory/2436-2-0x0000000004C40000-0x0000000004C80000-memory.dmp

    Filesize

    256KB

  • memory/2436-3-0x00000000006C0000-0x00000000006DA000-memory.dmp

    Filesize

    104KB

  • memory/2436-4-0x00000000009B0000-0x00000000009B8000-memory.dmp

    Filesize

    32KB

  • memory/2436-5-0x00000000009C0000-0x00000000009CA000-memory.dmp

    Filesize

    40KB

  • memory/2436-6-0x0000000005BF0000-0x0000000005C6C000-memory.dmp

    Filesize

    496KB

  • memory/2436-22-0x0000000073F30000-0x000000007461E000-memory.dmp

    Filesize

    6.9MB

  • memory/2748-9-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2748-10-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2748-12-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2748-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2748-16-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2748-18-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2748-20-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2748-7-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2748-21-0x0000000073F30000-0x000000007461E000-memory.dmp

    Filesize

    6.9MB

  • memory/2748-23-0x0000000000AE0000-0x0000000000B20000-memory.dmp

    Filesize

    256KB

  • memory/2748-24-0x0000000073F30000-0x000000007461E000-memory.dmp

    Filesize

    6.9MB