Analysis

  • max time kernel
    95s
  • max time network
    108s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16-09-2024 14:19

General

  • Target

    HG987654567000.vbs

  • Size

    33KB

  • MD5

    59a24e918603e8e13baece1f49ccb169

  • SHA1

    84e045dcf3e4c49445abe4e61af4795e8091d5de

  • SHA256

    c83fa0fe8fcce8c22dc31440b883ee13badb2438f6a35ddd56a7b8c7e03c335c

  • SHA512

    85561f9127d28e46ccb0a7329892cece142e817f77dbe77e1d2583ba4b29bf234c8334fe5596e30fe08d3edb1d615cbc9c8da8790f037c065664f0c29dd68c86

  • SSDEEP

    384:ljD6h5upiUy+I4B8Gyh6r4x8yGNy0wVS2fwspQsFXkInOEZfDBEwA0QmKCp:45uhyt4Xyh6r4x8ygGnusS3EZrp4ep

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://ftp.antoniomayol.com:21
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    cMhKDQUk1{;%

Signatures

  • AgentTesla

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

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • 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 SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\HG987654567000.vbs"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1856
    • C:\Users\Admin\AppData\Local\Temp\x.exe
      "C:\Users\Admin\AppData\Local\Temp\x.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4732
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4564

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\x.exe

    Filesize

    16KB

    MD5

    0895a48b8b3050333df73cab2c249efb

    SHA1

    97701a825d6c4462774ac1a7f98984c9a6a94c86

    SHA256

    c8abfe8f42fa396f48b01eb6612c5620ae198a13ac8e2aa1f47a1e277d704c48

    SHA512

    5bd55439b142d5f3145b7a952d1f964e963d89e47930c7616e7eaea244e3fd8e792b056d62c48bdcf9f5ba188949e0a81058bfcd355d89b87c7b8973b2e13ddc

  • memory/4564-20-0x0000000005820000-0x0000000005DC4000-memory.dmp

    Filesize

    5.6MB

  • memory/4564-22-0x0000000006650000-0x00000000066A0000-memory.dmp

    Filesize

    320KB

  • memory/4564-25-0x0000000074CAE000-0x0000000074CAF000-memory.dmp

    Filesize

    4KB

  • memory/4564-24-0x00000000066D0000-0x00000000066DA000-memory.dmp

    Filesize

    40KB

  • memory/4564-23-0x0000000006740000-0x00000000067D2000-memory.dmp

    Filesize

    584KB

  • memory/4564-16-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/4564-21-0x00000000053A0000-0x0000000005406000-memory.dmp

    Filesize

    408KB

  • memory/4564-19-0x0000000074CAE000-0x0000000074CAF000-memory.dmp

    Filesize

    4KB

  • memory/4732-11-0x00007FFCB1363000-0x00007FFCB1365000-memory.dmp

    Filesize

    8KB

  • memory/4732-18-0x00007FFCB1360000-0x00007FFCB1E21000-memory.dmp

    Filesize

    10.8MB

  • memory/4732-12-0x000001A5649B0000-0x000001A5649BA000-memory.dmp

    Filesize

    40KB

  • memory/4732-15-0x000001A564F00000-0x000001A564F0A000-memory.dmp

    Filesize

    40KB

  • memory/4732-14-0x00007FFCB1360000-0x00007FFCB1E21000-memory.dmp

    Filesize

    10.8MB

  • memory/4732-13-0x000001A564DC0000-0x000001A564DC8000-memory.dmp

    Filesize

    32KB