Analysis

  • max time kernel
    120s
  • max time network
    128s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    18-10-2021 12:49

General

  • Target

    Payment Slip.exe

  • Size

    81KB

  • MD5

    6e93f7298beda239f60083a0c5425060

  • SHA1

    3eae538f716c7ef96ec27915d966e5ee8eb95f61

  • SHA256

    f3a8222b6462aafcc1d47fa1a1ca8972daf438b0d98666308958982307ab88fd

  • SHA512

    559cf0a364fb1e2fd6d40a0113d201e81f531c325aaf4ddb701b1343bfedb654ed7ab34a0eff07eeb5cde7e5cf674bf5cd0fabc55b3638b26e77cd8cf31c4a23

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.croatiahunt.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    VilaVrgade852

Signatures

  • AgentTesla

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

  • AgentTesla Payload 5 IoCs
  • Downloads MZ/PE file
  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Payment Slip.exe
    "C:\Users\Admin\AppData\Local\Temp\Payment Slip.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Modifies system certificate store
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1760
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:776

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Install Root Certificate

1
T1130

Modify Registry

1
T1112

Collection

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/776-64-0x000000000043765E-mapping.dmp
  • memory/776-59-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/776-61-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/776-62-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/776-60-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/776-63-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/776-65-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/776-67-0x0000000001F90000-0x0000000001F91000-memory.dmp
    Filesize

    4KB

  • memory/776-68-0x0000000001F91000-0x0000000001F92000-memory.dmp
    Filesize

    4KB

  • memory/1760-56-0x0000000000440000-0x0000000000442000-memory.dmp
    Filesize

    8KB

  • memory/1760-57-0x000000001AEE0000-0x000000001AEE2000-memory.dmp
    Filesize

    8KB

  • memory/1760-58-0x00000000004A0000-0x00000000004B1000-memory.dmp
    Filesize

    68KB

  • memory/1760-54-0x0000000000EF0000-0x0000000000EF1000-memory.dmp
    Filesize

    4KB