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Resubmissions

03/01/2025, 23:07

250103-2344xa1kcj 10

03/01/2025, 12:42

250103-pxdcsatray 10

03/01/2025, 12:26

250103-pmhvhstlhw 10

Analysis

  • max time kernel
    118s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    03/01/2025, 11:38

General

  • Target

    Invoice Confirmation.exe

  • Size

    810.6MB

  • MD5

    63395033fc8d13ddd17e74e4bb13d5d6

  • SHA1

    0a65c313504c8bcac8dc2eec944dd078a71ce384

  • SHA256

    c322c179201974d21315230539606d1292a9159527f3f2eafa9d6167e8f51ae2

  • SHA512

    4a1eb33f370ac2ba32bea1af287abe753edfa63e493e9045960303b1990c1cbdb289dd3ebd273ff87ad68b912b4e016877dd3f78b8ed5ce373a3f20b581a0718

  • SSDEEP

    12288:mIR4R52J+XtyfG+Lzb6C65feSfSecDAMEnLwh8aFfxc1C0rmZdXm8qzd9p2MIR:mIeeJfG+LNzecKiVfaBiHXU9pTI

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot6882044231:AAEdfz6RtcLc5FDAwOwS8UYabnK3tQ7x4bs/

Signatures

  • AgentTesla

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

  • Agenttesla family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

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

  • 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 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • 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 5 IoCs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Invoice Confirmation.exe
    "C:\Users\Admin\AppData\Local\Temp\Invoice Confirmation.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2760
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Invoice Confirmation.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2796
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\KmihxwKU.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2596
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\KmihxwKU" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAAC0.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2652
    • C:\Users\Admin\AppData\Local\Temp\Invoice Confirmation.exe
      "C:\Users\Admin\AppData\Local\Temp\Invoice Confirmation.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2816

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpAAC0.tmp

    Filesize

    1KB

    MD5

    cf78337eb0b2be834365602cf7e093e2

    SHA1

    f8cdffd20a50efeb7bde12e4154f00f4a8cccadb

    SHA256

    218edf59ceb85ac08c62ebb30426db22c1f6c1cda45b6e9d0d974ae06864ecde

    SHA512

    d9bdc3ebdc5bb3f91e41c6c4b9a08cf4a92b1af36405a9cdaf94e3a6fe066af9d34de9f73a793b092700733a37da0e80a06679883e7d46e5f50f23a61a7dca0f

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

    Filesize

    7KB

    MD5

    11f0fc2fb7c0edeb652725982c7896c2

    SHA1

    8c1ea416c6858a7e8d1c25e705a9c724d154475e

    SHA256

    9f512a709d42b834d918f2b90a39ba2f56eced23730bf99af8e9a56ea33f88c3

    SHA512

    556e3cbd981603c78a627200a2a92e85a84e170e419d8cfcc61649cd4095d56f6815ef04bd31f92a1a6f3b1ac416505e83da84eab896bb02c55929ced06df12d

  • memory/2760-4-0x0000000074ACE000-0x0000000074ACF000-memory.dmp

    Filesize

    4KB

  • memory/2760-32-0x0000000074AC0000-0x00000000751AE000-memory.dmp

    Filesize

    6.9MB

  • memory/2760-0-0x0000000074ACE000-0x0000000074ACF000-memory.dmp

    Filesize

    4KB

  • memory/2760-5-0x0000000074AC0000-0x00000000751AE000-memory.dmp

    Filesize

    6.9MB

  • memory/2760-6-0x0000000000CB0000-0x0000000000D36000-memory.dmp

    Filesize

    536KB

  • memory/2760-2-0x0000000074AC0000-0x00000000751AE000-memory.dmp

    Filesize

    6.9MB

  • memory/2760-1-0x00000000011F0000-0x00000000012A6000-memory.dmp

    Filesize

    728KB

  • memory/2760-3-0x0000000000710000-0x0000000000728000-memory.dmp

    Filesize

    96KB

  • memory/2816-19-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2816-29-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2816-21-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2816-31-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2816-28-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2816-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2816-25-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2816-23-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB