Analysis

  • max time kernel
    133s
  • max time network
    129s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    14-10-2021 05:46

General

  • Target

    QUOTE 7254.bat.exe

  • Size

    578KB

  • MD5

    4d0f6d1430135a6779417b51294af53c

  • SHA1

    a473af0c7fa93abf4ee9f780664eee49843ca008

  • SHA256

    810834cae1e8be03e2534968ea0a1132a6d2dd18d8fd3e366c3d9dca3fb05846

  • SHA512

    67f89029d4185a8335303d43eee87aae9cd5e2c7faf6f7f67b32116b5d27daae9e71bd48132c066b3b7a57d63430334ce073e818fcebe0e50c0114a0196ccbe6

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.rapidmail.ec
  • Port:
    587
  • Username:
    anams@rapidmail.ec
  • Password:
    icui4cu2@@

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 IoCs
  • 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.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • 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 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\QUOTE 7254.bat.exe
    "C:\Users\Admin\AppData\Local\Temp\QUOTE 7254.bat.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2180
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\OgXhLeamRasUa" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4A72.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4080
    • C:\Users\Admin\AppData\Local\Temp\QUOTE 7254.bat.exe
      "C:\Users\Admin\AppData\Local\Temp\QUOTE 7254.bat.exe"
      2⤵
        PID:3956
      • C:\Users\Admin\AppData\Local\Temp\QUOTE 7254.bat.exe
        "C:\Users\Admin\AppData\Local\Temp\QUOTE 7254.bat.exe"
        2⤵
        • Accesses Microsoft Outlook profiles
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:3276

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Execution

    Scheduled Task

    1
    T1053

    Persistence

    Scheduled Task

    1
    T1053

    Privilege Escalation

    Scheduled Task

    1
    T1053

    Credential Access

    Credentials in Files

    2
    T1081

    Discovery

    System Information Discovery

    1
    T1082

    Collection

    Data from Local System

    2
    T1005

    Email Collection

    1
    T1114

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/2180-122-0x0000000005550000-0x0000000005555000-memory.dmp
      Filesize

      20KB

    • memory/2180-124-0x0000000007BB0000-0x0000000007C19000-memory.dmp
      Filesize

      420KB

    • memory/2180-118-0x0000000005290000-0x0000000005291000-memory.dmp
      Filesize

      4KB

    • memory/2180-119-0x0000000005370000-0x0000000005371000-memory.dmp
      Filesize

      4KB

    • memory/2180-120-0x0000000005420000-0x0000000005421000-memory.dmp
      Filesize

      4KB

    • memory/2180-121-0x00000000051B0000-0x00000000056AE000-memory.dmp
      Filesize

      5.0MB

    • memory/2180-117-0x00000000056B0000-0x00000000056B1000-memory.dmp
      Filesize

      4KB

    • memory/2180-123-0x0000000007A10000-0x0000000007A11000-memory.dmp
      Filesize

      4KB

    • memory/2180-115-0x0000000000900000-0x0000000000901000-memory.dmp
      Filesize

      4KB

    • memory/3276-126-0x0000000000400000-0x000000000043C000-memory.dmp
      Filesize

      240KB

    • memory/3276-127-0x0000000000436D3E-mapping.dmp
    • memory/3276-132-0x0000000005710000-0x0000000005C0E000-memory.dmp
      Filesize

      5.0MB

    • memory/3276-133-0x0000000005BC0000-0x0000000005BC1000-memory.dmp
      Filesize

      4KB

    • memory/3276-134-0x0000000006470000-0x0000000006471000-memory.dmp
      Filesize

      4KB

    • memory/4080-125-0x0000000000000000-mapping.dmp