Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-09-2024 13:14

General

  • Target

    18V4860 TS Light Diesel.exe

  • Size

    881KB

  • MD5

    88ad99bd08e94b721914d8368c3a259b

  • SHA1

    8d6518f2ea260d9835c3ed7190808fc263ed010a

  • SHA256

    4cce5506593907c3db78282849ed41729ca7cf737e1d38cb82dc10e27d92ff16

  • SHA512

    9dece9766da615b5b5b72c1d8167f7c3f54a73d3cc95a024e6b541e7c6c278606d9e8fdba37102cb251ed227a16780630033a6e8dcee9acc075fd417bb8c3e54

  • SSDEEP

    24576:qQ/EymH4hro8jGqj56ulEJ8v+FgFOfY823:3yHGrhGqdFlECv+CX

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

www.drechftankholding.com:2404

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    dfgh

  • mouse_option

    false

  • mutex

    Rmc-8J6PG9

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

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

    Malicious Access or copy of Web Browser Credential store.

  • Detected Nirsoft tools 3 IoCs

    Free utilities often used by attackers which can steal passwords, product keys, etc.

  • NirSoft MailPassView 1 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 1 IoCs

    Password recovery tool for various web browsers

  • 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.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Uses the VBS compiler for execution 1 TTPs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 8 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 13 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\18V4860 TS Light Diesel.exe
    "C:\Users\Admin\AppData\Local\Temp\18V4860 TS Light Diesel.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1480
    • 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\18V4860 TS Light Diesel.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2240
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\PNLFWPpnxTlxjH.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1448
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PNLFWPpnxTlxjH" /XML "C:\Users\Admin\AppData\Local\Temp\tmp50C.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:1072
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4540
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\ulpkdob"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:1048
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\wgucegmohc"
        3⤵
        • Accesses Microsoft Outlook accounts
        • System Location Discovery: System Language Discovery
        PID:3196
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\hiivxzxhukbtp"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:5004

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\dfgh\logs.dat

    Filesize

    144B

    MD5

    45cac4aa8510da867c8e1dbd53de53d7

    SHA1

    5cb72562c70978a2cc877aec7c92ba65336d9ec9

    SHA256

    f87a114c06410d9f26368ea0e6496b59e2e4b146ecfb6e3c67d1cb1679ab1fc0

    SHA512

    099aca9a72ce748c13eff61ce5df2a3cf29679bae538d31ac78ac1f1450a9a9da998f13806f8237d73b20fc9231bf7de2d08f2d910cfc2e69208c87b046fea46

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

    Filesize

    2KB

    MD5

    3d086a433708053f9bf9523e1d87a4e8

    SHA1

    b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28

    SHA256

    6f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69

    SHA512

    931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    18KB

    MD5

    402775a62a0cf0e66b0db58b8a197b2c

    SHA1

    6ea7e0674a141596ff2fd0790b22d19a18c2eb07

    SHA256

    94e1aa34b041d0a9edb17aae3b4b85792aba5518d1495d63d850447eae51680f

    SHA512

    991f7c2c6ae933fa481685cae7e5dcaceae8a034ce2a6032fb0143de5ad6424d66020daf2503730fd29ce4ec78d4b4369a97092cf15f6da8aac08b2524630126

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_juktl1r2.yo3.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp50C.tmp

    Filesize

    1KB

    MD5

    d3278e1555d285e7355c9a0adb16131f

    SHA1

    90cba8e6f0e1e69fa461d6789689a3c5c8451a95

    SHA256

    18ff7cd05aa888496a2d8be670139b1a7bbbe95fcc77f65a4047f42d6f4c55f8

    SHA512

    dae72c692a298467ff85ab2ca1bec04e6f9cde93ba0fd217349eb890b6e310c1008654a4801eba70f247f402afb192a6cfeeb568888159fde48bb406d6ee604d

  • C:\Users\Admin\AppData\Local\Temp\ulpkdob

    Filesize

    4KB

    MD5

    a7e181f6aa185be0ab0ca68b30406fe6

    SHA1

    58c86162658dc609615b8b6400f85c92506dfdc8

    SHA256

    c3071dc55b94db225d9c0f2c1b21c7e8f27dbfd168b85b7d618d8d19950e7ff2

    SHA512

    49969eb10e0bf7925940eb7374451f811658ef9ccfb83b86fb337c4d06c3ba17eb0181f598d9e0ec9ca25bfaf644209ac47b73d62ac924e73d03a4dcf8f8dd0f

  • memory/1048-102-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1048-107-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1048-105-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1448-36-0x0000000074B50000-0x0000000075300000-memory.dmp

    Filesize

    7.7MB

  • memory/1448-91-0x0000000007930000-0x000000000793E000-memory.dmp

    Filesize

    56KB

  • memory/1448-87-0x0000000007700000-0x000000000771A000-memory.dmp

    Filesize

    104KB

  • memory/1448-86-0x0000000007D40000-0x00000000083BA000-memory.dmp

    Filesize

    6.5MB

  • memory/1448-88-0x0000000007770000-0x000000000777A000-memory.dmp

    Filesize

    40KB

  • memory/1448-90-0x0000000007900000-0x0000000007911000-memory.dmp

    Filesize

    68KB

  • memory/1448-75-0x00000000713C0000-0x000000007140C000-memory.dmp

    Filesize

    304KB

  • memory/1448-20-0x0000000074B50000-0x0000000075300000-memory.dmp

    Filesize

    7.7MB

  • memory/1448-101-0x0000000074B50000-0x0000000075300000-memory.dmp

    Filesize

    7.7MB

  • memory/1448-34-0x0000000074B50000-0x0000000075300000-memory.dmp

    Filesize

    7.7MB

  • memory/1480-0-0x0000000074B5E000-0x0000000074B5F000-memory.dmp

    Filesize

    4KB

  • memory/1480-4-0x0000000074B50000-0x0000000075300000-memory.dmp

    Filesize

    7.7MB

  • memory/1480-5-0x0000000005060000-0x000000000506A000-memory.dmp

    Filesize

    40KB

  • memory/1480-3-0x0000000004FC0000-0x0000000005052000-memory.dmp

    Filesize

    584KB

  • memory/1480-2-0x0000000005490000-0x0000000005A34000-memory.dmp

    Filesize

    5.6MB

  • memory/1480-1-0x0000000000530000-0x0000000000612000-memory.dmp

    Filesize

    904KB

  • memory/1480-10-0x00000000091F0000-0x000000000928C000-memory.dmp

    Filesize

    624KB

  • memory/1480-6-0x0000000005260000-0x0000000005270000-memory.dmp

    Filesize

    64KB

  • memory/1480-7-0x0000000074B5E000-0x0000000074B5F000-memory.dmp

    Filesize

    4KB

  • memory/1480-8-0x0000000074B50000-0x0000000075300000-memory.dmp

    Filesize

    7.7MB

  • memory/1480-53-0x0000000074B50000-0x0000000075300000-memory.dmp

    Filesize

    7.7MB

  • memory/1480-9-0x0000000006B80000-0x0000000006C40000-memory.dmp

    Filesize

    768KB

  • memory/2240-28-0x0000000005D30000-0x0000000005D96000-memory.dmp

    Filesize

    408KB

  • memory/2240-16-0x0000000074B50000-0x0000000075300000-memory.dmp

    Filesize

    7.7MB

  • memory/2240-15-0x0000000004DE0000-0x0000000004E16000-memory.dmp

    Filesize

    216KB

  • memory/2240-54-0x00000000063B0000-0x00000000063CE000-memory.dmp

    Filesize

    120KB

  • memory/2240-17-0x0000000005500000-0x0000000005B28000-memory.dmp

    Filesize

    6.2MB

  • memory/2240-18-0x0000000074B50000-0x0000000075300000-memory.dmp

    Filesize

    7.7MB

  • memory/2240-19-0x0000000074B50000-0x0000000075300000-memory.dmp

    Filesize

    7.7MB

  • memory/2240-64-0x00000000713C0000-0x000000007140C000-memory.dmp

    Filesize

    304KB

  • memory/2240-78-0x00000000073B0000-0x0000000007453000-memory.dmp

    Filesize

    652KB

  • memory/2240-56-0x00000000069B0000-0x00000000069FC000-memory.dmp

    Filesize

    304KB

  • memory/2240-74-0x0000000006920000-0x000000000693E000-memory.dmp

    Filesize

    120KB

  • memory/2240-63-0x0000000006960000-0x0000000006992000-memory.dmp

    Filesize

    200KB

  • memory/2240-35-0x0000000005EA0000-0x00000000061F4000-memory.dmp

    Filesize

    3.3MB

  • memory/2240-100-0x0000000074B50000-0x0000000075300000-memory.dmp

    Filesize

    7.7MB

  • memory/2240-22-0x0000000005CC0000-0x0000000005D26000-memory.dmp

    Filesize

    408KB

  • memory/2240-89-0x0000000007950000-0x00000000079E6000-memory.dmp

    Filesize

    600KB

  • memory/2240-21-0x0000000005BA0000-0x0000000005BC2000-memory.dmp

    Filesize

    136KB

  • memory/2240-94-0x00000000079F0000-0x00000000079F8000-memory.dmp

    Filesize

    32KB

  • memory/2240-92-0x0000000007910000-0x0000000007924000-memory.dmp

    Filesize

    80KB

  • memory/2240-93-0x0000000007A10000-0x0000000007A2A000-memory.dmp

    Filesize

    104KB

  • memory/3196-106-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/3196-103-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/3196-104-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/4540-57-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4540-134-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4540-62-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4540-49-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4540-60-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4540-151-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4540-150-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4540-143-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4540-59-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4540-52-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4540-47-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4540-46-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4540-120-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/4540-121-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4540-119-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/4540-116-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/4540-126-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4540-127-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4540-58-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4540-55-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4540-135-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4540-142-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/5004-112-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/5004-113-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/5004-108-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB