Analysis

  • max time kernel
    95s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15-09-2024 19:19

General

  • Target

    Remittance_slip‮fdp..exe

  • Size

    1.6MB

  • MD5

    6c1c6a49edcabab2dafc014937cd388d

  • SHA1

    03fb8fe4ecfb3f3967a6eee4edb1faf2b19c1924

  • SHA256

    998328ecd3a13fd3287f88e37119064b3a4094d2e935786a5327d47e4ed4466b

  • SHA512

    22c1e0cecfa8a7900fef22eeea9b4cd555bb3fef2b681ef464c2a6aac65990ce25acc399c17cbc57df238f26fb4bdb10da829163a78a3713994d95407d4a8b70

  • SSDEEP

    12288:ixEAmDzLDXtfwweWBc6IutzOBk+uynC6h/kUBPtKB/KN4+szCuVR32gWYXKP:caLDXtfwwVBPtzEJhBVKI4ZCuPmDYXKP

Malware Config

Extracted

Credentials

  • Protocol:
    ftp
  • Host:
    ftp.fosna.net
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    u;4z3V.Iir1l

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://ftp.fosna.net
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    u;4z3V.Iir1l

Signatures

  • AgentTesla

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

  • UAC bypass 3 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 2 IoCs
  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Looks for VMWare Tools registry key 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Windows security modification 2 TTPs 3 IoCs
  • Checks whether UAC is enabled 1 TTPs 2 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.

  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Remittance_slip‮fdp..exe
    "C:\Users\Admin\AppData\Local\Temp\Remittance_slip‮fdp..exe"
    1⤵
    • UAC bypass
    • Windows security bypass
    • Looks for VirtualBox Guest Additions in registry
    • Looks for VMWare Tools registry key
    • Checks BIOS information in registry
    • Checks computer location settings
    • Windows security modification
    • Checks whether UAC is enabled
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:1668
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Remittance_slipfdp..exe" -Force
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3732
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4616

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1dibx2zk.qp2.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/1668-0-0x00007FFEAA183000-0x00007FFEAA185000-memory.dmp

    Filesize

    8KB

  • memory/1668-2-0x000001C4F6B60000-0x000001C4F6BF4000-memory.dmp

    Filesize

    592KB

  • memory/1668-3-0x00007FFEAA180000-0x00007FFEAAC41000-memory.dmp

    Filesize

    10.8MB

  • memory/1668-24-0x00007FFEAA180000-0x00007FFEAAC41000-memory.dmp

    Filesize

    10.8MB

  • memory/1668-1-0x000001C4F4F30000-0x000001C4F4F48000-memory.dmp

    Filesize

    96KB

  • memory/3732-18-0x00000284FFE90000-0x00000284FFEA0000-memory.dmp

    Filesize

    64KB

  • memory/3732-23-0x00007FFEAA180000-0x00007FFEAAC41000-memory.dmp

    Filesize

    10.8MB

  • memory/3732-6-0x00007FFEAA180000-0x00007FFEAAC41000-memory.dmp

    Filesize

    10.8MB

  • memory/3732-14-0x00000284FFDD0000-0x00000284FFDF2000-memory.dmp

    Filesize

    136KB

  • memory/3732-5-0x00007FFEAA180000-0x00007FFEAAC41000-memory.dmp

    Filesize

    10.8MB

  • memory/4616-19-0x0000000005F70000-0x0000000006514000-memory.dmp

    Filesize

    5.6MB

  • memory/4616-22-0x0000000005AC0000-0x0000000005B26000-memory.dmp

    Filesize

    408KB

  • memory/4616-17-0x00000000744BE000-0x00000000744BF000-memory.dmp

    Filesize

    4KB

  • memory/4616-4-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/4616-25-0x0000000006F20000-0x0000000006F70000-memory.dmp

    Filesize

    320KB

  • memory/4616-26-0x0000000007010000-0x00000000070AC000-memory.dmp

    Filesize

    624KB

  • memory/4616-27-0x0000000007150000-0x00000000071E2000-memory.dmp

    Filesize

    584KB

  • memory/4616-28-0x00000000070B0000-0x00000000070BA000-memory.dmp

    Filesize

    40KB

  • memory/4616-29-0x00000000744BE000-0x00000000744BF000-memory.dmp

    Filesize

    4KB