Analysis

  • max time kernel
    149s
  • max time network
    136s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    30/03/2025, 15:10

General

  • Target

    0d3cc26534eee5d7d387f1e718299e30909cc192858f6a46646d2b0c85debe8b.exe

  • Size

    2.7MB

  • MD5

    2c54a502a6e895067b44c10518cc526b

  • SHA1

    be97549d3a00f0e33787998145d4498b1bb06860

  • SHA256

    0d3cc26534eee5d7d387f1e718299e30909cc192858f6a46646d2b0c85debe8b

  • SHA512

    720862858a1d9f428772e940ab9a15cf4b915afb15ae983a532bb27e1c59671cd28a7f1ffc7fffb3ce45b0c91697739d5c07338c3e9b15e566d8376aceee1025

  • SSDEEP

    49152:m1dJHUNmnJgPa4g5X9IrE76Iech3cfxVfCzhJTzkaNogFZDqVnDnE:m1P0NAJgar5tIrOFech3cfvfCtJTzkIR

Malware Config

Extracted

Family

valleyrat_s2

Version

1.0

C2

154.44.8.39:443

154.44.8.39:80

154.44.8.39:8011

Attributes
  • campaign_date

    2025. 3. 7

Signatures

  • ValleyRat

    ValleyRat stage2 is a backdoor written in C++.

  • Valleyrat_s2 family
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Using powershell.exe command.

  • Enumerates connected drives 3 TTPs 22 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Enumerates processes with tasklist 1 TTPs 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 22 IoCs

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

  • Delays execution with timeout.exe 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 52 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0d3cc26534eee5d7d387f1e718299e30909cc192858f6a46646d2b0c85debe8b.exe
    "C:\Users\Admin\AppData\Local\Temp\0d3cc26534eee5d7d387f1e718299e30909cc192858f6a46646d2b0c85debe8b.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2728
    • C:\Users\Admin\AppData\Roaming\Update.exe
      "C:\Users\Admin\AppData\Roaming\Update.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2828
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /B /c "C:\Users\Admin\AppData\Local\Temp\\monitor.bat"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2892
        • C:\Windows\SysWOW64\tasklist.exe
          tasklist /FI "IMAGENAME eq Update.exe"
          4⤵
          • Enumerates processes with tasklist
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          PID:2740
        • C:\Windows\SysWOW64\findstr.exe
          findstr /I "Update.exe"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:2684
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 30 /nobreak
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:3016
        • C:\Windows\SysWOW64\tasklist.exe
          tasklist /FI "IMAGENAME eq Update.exe"
          4⤵
          • Enumerates processes with tasklist
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          PID:1188
        • C:\Windows\SysWOW64\findstr.exe
          findstr /I "Update.exe"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:2668
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 30 /nobreak
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:1420
        • C:\Windows\SysWOW64\tasklist.exe
          tasklist /FI "IMAGENAME eq Update.exe"
          4⤵
          • Enumerates processes with tasklist
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          PID:1148
        • C:\Windows\SysWOW64\findstr.exe
          findstr /I "Update.exe"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:1768
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 30 /nobreak
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:2256
        • C:\Windows\SysWOW64\tasklist.exe
          tasklist /FI "IMAGENAME eq Update.exe"
          4⤵
          • Enumerates processes with tasklist
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          PID:2476
        • C:\Windows\SysWOW64\findstr.exe
          findstr /I "Update.exe"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:2368
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 30 /nobreak
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:2236
        • C:\Windows\SysWOW64\tasklist.exe
          tasklist /FI "IMAGENAME eq Update.exe"
          4⤵
          • Enumerates processes with tasklist
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          PID:744
        • C:\Windows\SysWOW64\findstr.exe
          findstr /I "Update.exe"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:1128
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 30 /nobreak
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:908
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /C powershell -Command "Set-ExecutionPolicy Unrestricted -Scope CurrentUser"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2480
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell -Command "Set-ExecutionPolicy Unrestricted -Scope CurrentUser"
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2260
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /C powershell -ExecutionPolicy Bypass -File C:\Users\Admin\AppData\Local\updated.ps1
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1700
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell -ExecutionPolicy Bypass -File C:\Users\Admin\AppData\Local\updated.ps1
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2908

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\monitor.bat

    Filesize

    769B

    MD5

    4c78bd444198aee8dd650c726ed3e447

    SHA1

    fd2179a144c227875fa2245b324760f1ed4aa455

    SHA256

    2fee95571c2580a70ad950c5e5c5e7b36a1f6a183542d4002a8123974fef53f5

    SHA512

    48a11502ed05a44e209d0474e5303062cffe2b6b8489489cf241da9ff01d1774b639d01293d82ebfe3017fbba158047b4bc39a5f66ea1265819d00c42268b82b

  • C:\Users\Admin\AppData\Local\updated.ps1

    Filesize

    151B

    MD5

    aa0e1012d3b7c24fad1be4806756c2cf

    SHA1

    fe0d130af9105d9044ff3d657d1abeaf0b750516

    SHA256

    fc47e1fa89397c3139d9047dc667531a9153a339f8e29ac713e518d51a995897

    SHA512

    15fae192951747a0c71059f608700f88548f3e60bb5c708b206bf793a7e3d059a278f2058d4ac86b86781b202037401a29602ee4d6c0cbaaff532cef311975f4

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\4PYLRVXCK6LA3UEUHBZF.temp

    Filesize

    7KB

    MD5

    b7817340992f31864b47004b95ada020

    SHA1

    ec6a37958e783eb7eaf9aa9edb1ad4921459adb4

    SHA256

    8ea16b194e85f3b6cd607cddd763e34877935febbe900e8526d2c5335880ded7

    SHA512

    8256673a30398c323281e8e6fbe62a16affd232b3e95709b10129504a770ba0005760c456efa9372860e7ae10fbdedb2a32a70f18163ec4ed6af26c1904b9f82

  • C:\Users\Admin\AppData\Roaming\Update.dll

    Filesize

    2.1MB

    MD5

    07ac1439cee26e090be31ecc0eedc02b

    SHA1

    d225d63ee5bd082525192320296063cfa3576263

    SHA256

    d036bf5f6400177e078f4b8bab5f817430eb4dbdf79461c6f273bd73f7c312c7

    SHA512

    0ebb6aad4df9352c913f44fe57b909c27fe7e8a404c1a8af883e3edcb566b11f74929515b615879599f3c1685a2c263129aa69869d7d7a2717932aae0233ab2e

  • C:\Users\Admin\AppData\Roaming\Update.exe

    Filesize

    386KB

    MD5

    fb325c945a08d06fe91681179bdccc66

    SHA1

    f5d91b7d75d34e156066ab4099e0fd0df9227b32

    SHA256

    0c2cc4513ec9101a28a7988c72a46175efd82f387bb3bcfb2612e808804282b5

    SHA512

    2bb588ebe2fa35d03652aec4e5d51dabd3a24e996336a4d5ec9c762d6084862d5cd5f530f1da0b98d2887ba88f4e077697d128071ff497d2967f9f42adc2f533

  • memory/2828-27-0x00000000005D0000-0x0000000000608000-memory.dmp

    Filesize

    224KB

  • memory/2828-29-0x0000000010000000-0x0000000010024000-memory.dmp

    Filesize

    144KB

  • memory/2828-24-0x0000000010000000-0x0000000010024000-memory.dmp

    Filesize

    144KB

  • memory/2828-25-0x00000000005D0000-0x0000000000608000-memory.dmp

    Filesize

    224KB

  • memory/2828-26-0x00000000005D0000-0x0000000000608000-memory.dmp

    Filesize

    224KB

  • memory/2828-23-0x0000000010000000-0x0000000010024000-memory.dmp

    Filesize

    144KB

  • memory/2828-28-0x00000000005D0000-0x0000000000608000-memory.dmp

    Filesize

    224KB

  • memory/2828-22-0x0000000010000000-0x0000000010024000-memory.dmp

    Filesize

    144KB

  • memory/2828-30-0x0000000010000000-0x0000000010024000-memory.dmp

    Filesize

    144KB

  • memory/2828-31-0x00000000005D0000-0x0000000000608000-memory.dmp

    Filesize

    224KB

  • memory/2828-32-0x0000000000B00000-0x0000000000B2F000-memory.dmp

    Filesize

    188KB

  • memory/2828-37-0x00000000005D0000-0x0000000000608000-memory.dmp

    Filesize

    224KB

  • memory/2828-39-0x00000000005D0000-0x0000000000608000-memory.dmp

    Filesize

    224KB

  • memory/2828-21-0x0000000010000000-0x0000000010024000-memory.dmp

    Filesize

    144KB

  • memory/2828-15-0x0000000010000000-0x0000000010024000-memory.dmp

    Filesize

    144KB

  • memory/2828-50-0x00000000005D0000-0x0000000000608000-memory.dmp

    Filesize

    224KB