Analysis

  • max time kernel
    133s
  • max time network
    141s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/03/2023, 07:41

General

  • Target

    Payment copy.exe

  • Size

    635KB

  • MD5

    758739dc69bea1dbffeb64a16adbba73

  • SHA1

    5ab3aac44c8bc50082ad557df368549a3c10e7e4

  • SHA256

    dcbf2a46595f5714137faa5d4950067eb1b1e5259c2bce2a75f853a73303d45f

  • SHA512

    2096fddf3b59a51673ab236964866699ac20522fe19c084c03cf9368a9154ef393d0a731b9c653bfdaeba9e393f0eb3320cee70abbba5935fa28ce528d2dfa00

  • SSDEEP

    12288:UnE5BhWH78QM8F2yf8mnpA9JXKBO4wl363Y8fo:UnE5KbXPddA3XGW363YKo

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot5663632223:AAG5KHZDs7KWoaqTYx3lSyFlOdfD9vGegQo/

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.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 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). Likely ransomware behaviour.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Payment copy.exe
    "C:\Users\Admin\AppData\Local\Temp\Payment copy.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:396
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ToLzCL" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE38F.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:992
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:2608

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\tmpE38F.tmp

          Filesize

          1KB

          MD5

          21061284d01d4b95b99ffe828c57d258

          SHA1

          1ed836d5ed6e7c96ef16d91114966d9a38647eb3

          SHA256

          38cff5ace9004df5f5d10c6ef4743b8b239ab872605be0122f6abe1e6c422e17

          SHA512

          1a77275bac9c1fda030c43ba771a1981503c9bcbb8eee4fab4ed0167624a3e84bc22348404df6ff59202615b58c98362d473f0d32a7e67e784891eca3291402d

        • memory/396-139-0x0000000005390000-0x00000000053E6000-memory.dmp

          Filesize

          344KB

        • memory/396-134-0x0000000004FC0000-0x000000000505C000-memory.dmp

          Filesize

          624KB

        • memory/396-136-0x0000000005060000-0x00000000050F2000-memory.dmp

          Filesize

          584KB

        • memory/396-137-0x0000000004FB0000-0x0000000004FC0000-memory.dmp

          Filesize

          64KB

        • memory/396-138-0x0000000005320000-0x000000000532A000-memory.dmp

          Filesize

          40KB

        • memory/396-133-0x0000000000690000-0x0000000000736000-memory.dmp

          Filesize

          664KB

        • memory/396-140-0x0000000004FB0000-0x0000000004FC0000-memory.dmp

          Filesize

          64KB

        • memory/396-135-0x00000000056D0000-0x0000000005C74000-memory.dmp

          Filesize

          5.6MB

        • memory/2608-144-0x0000000000400000-0x0000000000430000-memory.dmp

          Filesize

          192KB

        • memory/2608-146-0x0000000004FE0000-0x0000000005046000-memory.dmp

          Filesize

          408KB

        • memory/2608-147-0x0000000005090000-0x00000000050A0000-memory.dmp

          Filesize

          64KB

        • memory/2608-149-0x00000000069F0000-0x0000000006A40000-memory.dmp

          Filesize

          320KB

        • memory/2608-150-0x0000000006C10000-0x0000000006DD2000-memory.dmp

          Filesize

          1.8MB

        • memory/2608-151-0x0000000005090000-0x00000000050A0000-memory.dmp

          Filesize

          64KB