Analysis

  • max time kernel
    145s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    22-05-2024 18:26

General

  • Target

    QJAS2024P01-080 Q20240521.exe

  • Size

    365KB

  • MD5

    c384da3e37c99bfc9faebad32ecfb668

  • SHA1

    b852f9fa14ac453cee0d75498254eab0cf6cc35a

  • SHA256

    55ced74de69fdb2659600fae77f6177b2c9d973c0da60060546010e71309d92e

  • SHA512

    f0f3a7f37f21e26e5969fb7e5830e12061cf2659e40a0bc6e8d1d9642de65b6882f24a8ede55afa793fcc8ba741897bfacba0aab3fe0288953e116263d422ec5

  • SSDEEP

    6144:MDGIRuoQi1NgwFSaUVf9GBVoqzai9ghRTMiZ4rbcevR:zItQi1awNUaBVJza2QRQiZWp

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://ftp.instantprint.ro
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    playmen123#@

Signatures

  • AgentTesla

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

  • Loads dropped DLL 4 IoCs
  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • 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 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\QJAS2024P01-080 Q20240521.exe
    "C:\Users\Admin\AppData\Local\Temp\QJAS2024P01-080 Q20240521.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2380
    • C:\Users\Admin\AppData\Local\Temp\QJAS2024P01-080 Q20240521.exe
      "C:\Users\Admin\AppData\Local\Temp\QJAS2024P01-080 Q20240521.exe"
      2⤵
      • Suspicious use of NtCreateThreadExHideFromDebugger
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2764

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Local\Temp\nst252E.tmp\BgImage.dll

    Filesize

    7KB

    MD5

    143c1b18ccd1ab2ceed02caf0e06ef8a

    SHA1

    b59d780e0a85f816b41aa657d4a643d77bd20a99

    SHA256

    8920afae5d9c06f6ba1f254a1e32ac2acfb0fdb11ab2158cfe880a191045e3d7

    SHA512

    91bd09610679224a7774044b16054721567385d3faa241e72b51f27ef660870f7282e887016df492d5b3ab3b6d9c130e036258c4f27d5ca4cc3a12b76ff71b39

  • \Users\Admin\AppData\Local\Temp\nst252E.tmp\System.dll

    Filesize

    11KB

    MD5

    b0c77267f13b2f87c084fd86ef51ccfc

    SHA1

    f7543f9e9b4f04386dfbf33c38cbed1bf205afb3

    SHA256

    a0cac4cf4852895619bc7743ebeb89f9e4927ccdb9e66b1bcd92a4136d0f9c77

    SHA512

    f2b57a2eea00f52a3c7080f4b5f2bb85a7a9b9f16d12da8f8ff673824556c62a0f742b72be0fd82a2612a4b6dbd7e0fdc27065212da703c2f7e28d199696f66e

  • \Users\Admin\AppData\Local\Temp\nst252E.tmp\nsDialogs.dll

    Filesize

    9KB

    MD5

    eac1c3707970fe7c71b2d760c34763fa

    SHA1

    f275e659ad7798994361f6ccb1481050aba30ff8

    SHA256

    062c75ad650548750564ffd7aef8cd553773b5c26cae7f25a5749b13165194e3

    SHA512

    3415bd555cf47407c0ae62be0dbcba7173d2b33a371bf083ce908fc901811adb888b7787d11eb9d99a1a739cbd9d1c66e565db6cd678bdadaf753fbda14ffd09

  • memory/2380-34-0x0000000077261000-0x0000000077362000-memory.dmp

    Filesize

    1.0MB

  • memory/2380-35-0x0000000077260000-0x0000000077409000-memory.dmp

    Filesize

    1.7MB

  • memory/2764-36-0x0000000077260000-0x0000000077409000-memory.dmp

    Filesize

    1.7MB

  • memory/2764-37-0x0000000000470000-0x00000000014D2000-memory.dmp

    Filesize

    16.4MB

  • memory/2764-38-0x0000000000470000-0x00000000004B2000-memory.dmp

    Filesize

    264KB