Analysis

  • max time kernel
    352s
  • max time network
    614s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    26-10-2021 07:00

General

  • Target

    BL. NO. ANSMUNDAR3621.exe

  • Size

    705KB

  • MD5

    5e4930b37a31c65525ec4e308a67fb7e

  • SHA1

    c598d2e034dd4d1e1266b8d0f047cfd629b56ab9

  • SHA256

    a96249e0df2c88e2e047ad332ba7d2755dd6f390d39afc67de05ddfa8726e53f

  • SHA512

    86600dfb132d057a6f7fe4d644b8c3577ef83ed95e2986d4c2d3475c6af92db1eb7bb3ef6288b29b441e30443057c296838bb49e1980e0ed7dfafdff7a6968e4

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.topfrozenfoodbrand.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Chukwudim28@

Signatures

  • AgentTesla

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

  • AgentTesla Payload 2 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
  • Suspicious behavior: EnumeratesProcesses 4 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\BL. NO. ANSMUNDAR3621.exe
    "C:\Users\Admin\AppData\Local\Temp\BL. NO. ANSMUNDAR3621.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3804
    • C:\Users\Admin\AppData\Local\Temp\BL. NO. ANSMUNDAR3621.exe
      "C:\Users\Admin\AppData\Local\Temp\BL. NO. ANSMUNDAR3621.exe"
      2⤵
        PID:656
      • C:\Users\Admin\AppData\Local\Temp\BL. NO. ANSMUNDAR3621.exe
        "C:\Users\Admin\AppData\Local\Temp\BL. NO. ANSMUNDAR3621.exe"
        2⤵
        • Accesses Microsoft Outlook profiles
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:664

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\BL. NO. ANSMUNDAR3621.exe.log
      MD5

      0c2899d7c6746f42d5bbe088c777f94c

      SHA1

      622f66c5f7a3c91b28a9f43ce7c6cabadbf514f1

      SHA256

      5b0b99740cadaeff7b9891136644b396941547e20cc7eea646560d0dad5a5458

      SHA512

      ab7a3409ed4b6ca00358330a3aa4ef6de7d81eb21a5e24bb629ef6a7c7c4e2a70ca3accfbc989ed6e495fdb8eb6203a26d6f2a37b2a5809af4276af375b49078

    • memory/664-124-0x0000000000400000-0x000000000043C000-memory.dmp
      Filesize

      240KB

    • memory/664-133-0x00000000060A0000-0x00000000060A1000-memory.dmp
      Filesize

      4KB

    • memory/664-132-0x0000000005500000-0x0000000005501000-memory.dmp
      Filesize

      4KB

    • memory/664-131-0x0000000005520000-0x0000000005521000-memory.dmp
      Filesize

      4KB

    • memory/664-125-0x0000000000436D9E-mapping.dmp
    • memory/3804-119-0x0000000007400000-0x00000000078FE000-memory.dmp
      Filesize

      5.0MB

    • memory/3804-123-0x0000000008310000-0x0000000008367000-memory.dmp
      Filesize

      348KB

    • memory/3804-122-0x0000000008270000-0x0000000008271000-memory.dmp
      Filesize

      4KB

    • memory/3804-121-0x0000000007840000-0x0000000007847000-memory.dmp
      Filesize

      28KB

    • memory/3804-120-0x00000000074B0000-0x00000000074B1000-memory.dmp
      Filesize

      4KB

    • memory/3804-115-0x00000000006E0000-0x00000000006E1000-memory.dmp
      Filesize

      4KB

    • memory/3804-118-0x00000000074E0000-0x00000000074E1000-memory.dmp
      Filesize

      4KB

    • memory/3804-117-0x0000000007900000-0x0000000007901000-memory.dmp
      Filesize

      4KB