Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    04-06-2024 01:45

General

  • Target

    27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe

  • Size

    712KB

  • MD5

    38d30f05e8c4ad2e0061948d66e245b1

  • SHA1

    1837d9e6f35f9a67a6c4909020f737050bbb7ba7

  • SHA256

    27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa

  • SHA512

    f05579219a0761e558bd9ca96feafa697791a8fba153b7ccf8bfb2169ff52dabe286bb390282f894d74be9862161cca0d86a33340e6b0c26932da6402e2ac3a3

  • SSDEEP

    12288:LVmKt/rFfa7mlaGLcuz2PUPCRYDdhKmmVF5jyvgBC7kQW5gWR2ZQ2O4dh1:8KN5imJyPsCRYD3K1X2vCHQykZQ8dh1

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • 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 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 SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 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\27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe
    "C:\Users\Admin\AppData\Local\Temp\27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2036
    • 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\27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2676
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\YRcUAyKHnV.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2744
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YRcUAyKHnV" /XML "C:\Users\Admin\AppData\Local\Temp\tmp53AC.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2752
    • C:\Users\Admin\AppData\Local\Temp\27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe
      "C:\Users\Admin\AppData\Local\Temp\27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2004

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp53AC.tmp

    Filesize

    1KB

    MD5

    ee49dac15cc5ab8ed1bc2ff849f670fa

    SHA1

    3d37b87ae0e62bbf2abbc5cfc8676cb1eff2f4f7

    SHA256

    30b468500b893c65a923e6b5a32dcc97b62a636e26129017f9e3d595d0c70e1b

    SHA512

    4a2c040b49826afd58dc2ea84170647b1d9a15475d76e4708fe6870b115cc34f96f4e6a690418a34817ecc276082045e5cd4ee0cfe0cc71c3694b664aa0119de

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

    Filesize

    7KB

    MD5

    c17ffb9d20e5453b2911f6734a619a2b

    SHA1

    aa5f14571d6a8034f1e7d29e1c039325f8518a38

    SHA256

    649f4524215c4ee1bc7e35abd54c2032165199b11617d3f32e9e7c11b764bc53

    SHA512

    f20dcccd8edaefce36861d39aeacd733e229ed1d26516b8168520b0eb10123df480953c46d1871a0dcf7abb038dbe67f6733c3967afd9a388fdc4cc519ee0e6f

  • memory/2004-28-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2004-30-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2004-21-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2004-23-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2004-25-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2004-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2004-29-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2004-19-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2036-6-0x0000000005070000-0x00000000050F4000-memory.dmp

    Filesize

    528KB

  • memory/2036-1-0x0000000000B20000-0x0000000000BD8000-memory.dmp

    Filesize

    736KB

  • memory/2036-0-0x00000000746FE000-0x00000000746FF000-memory.dmp

    Filesize

    4KB

  • memory/2036-2-0x00000000746F0000-0x0000000074DDE000-memory.dmp

    Filesize

    6.9MB

  • memory/2036-3-0x0000000000290000-0x00000000002A6000-memory.dmp

    Filesize

    88KB

  • memory/2036-5-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2036-4-0x00000000004B0000-0x00000000004BE000-memory.dmp

    Filesize

    56KB

  • memory/2036-31-0x00000000746F0000-0x0000000074DDE000-memory.dmp

    Filesize

    6.9MB