Overview

overview

10

Static

static

10

0943803598...5b.exe

windows10-2004-x64

10

0943803598...5b.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    43s
  • max time network
    63s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250314-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/04/2025, 19:39

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General

  • Target

    094380359816b954216cfd1c75e9be403a9a1ae88deff5886cb6366f255fab5b.exe

  • Size

    240KB

  • MD5

    698082ab63f5a052cbe8988b609b006a

  • SHA1

    c51ad34d4821fdec3281ff874b832fbc8bd1e846

  • SHA256

    094380359816b954216cfd1c75e9be403a9a1ae88deff5886cb6366f255fab5b

  • SHA512

    ef2e878cb3e62d2bd3969c985294957c6c1728f808c7a058ec18cfcaf8f9e16043960bc7be44477393f82a98af02416e0e038efb6ea6dd4f90334dfb02c70c3e

  • SSDEEP

    1536:1NV+sAk3jeD14bEGUx90IoGxziJWEsO+6r2ip:1vx3jeDeEGUx90dms+6X

Score
10/10
silverratdefense_evasionexecutionpersistencetrojan

Malware Config

Extracted

Family

silverrat

Version

1.0.0.0

C2

traffic-equipment.gl.at.ply.gg:37035

Mutex

wnykMJYHba

Attributes
  • certificate

    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

  • decrypted_key

    -|S.S.S|-

  • discord

    https://discord.com/api/webhooks/1362208671114723479/LvdkCF57ZASLhyMey8E8SalpGbpRjudiP5GtndFuJHj6Qkuha-CXPrshzVau_JY7H3k6

  • key

    yy6zDjAUmbB09pKvo5Hhug==

  • key_x509

    VFNiTWdsYVhhVVNtVUVHRU1KRndBWUxYWG9scEJZ

  • payload_url

    https://g.top4top.io/p_2522c7w8u1.png

  • reconnect_delay

    4

  • server_signature

    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

Signatures

  • SilverRat

    SilverRat is trojan written in C#.

    trojansilverrat
  • Silverrat family
    silverrat
  • Sets file to hidden 1 TTPs 2 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

    defense_evasion
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Using powershell.exe command.

    execution
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Delays execution with timeout.exe 1 IoCs
    defense_evasion
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

    persistenceexecution
  • Suspicious behavior: EnumeratesProcesses 28 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware
  • Views/modifies file attributes 1 TTPs 2 IoCs
    defense_evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\094380359816b954216cfd1c75e9be403a9a1ae88deff5886cb6366f255fab5b.exe
    "C:\Users\Admin\AppData\Local\Temp\094380359816b954216cfd1c75e9be403a9a1ae88deff5886cb6366f255fab5b.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4336
    • C:\Windows\System32\attrib.exe
      "C:\Windows\System32\attrib.exe" +s +h "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\Windows Security Health Service"
      2⤵
      • Sets file to hidden
      • Views/modifies file attributes
      PID:3976
    • C:\Windows\System32\attrib.exe
      "C:\Windows\System32\attrib.exe" +s +h "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\Windows Security Health Service\$77Windows Security Health Service.exe"
      2⤵
      • Sets file to hidden
      • Views/modifies file attributes
      PID:4400
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpC1C9.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1076
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:3048
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\Windows Security Health Service\$77Windows Security Health Service.exe
        "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\Windows Security Health Service\$77Windows Security Health Service.exe"
        3⤵
        • Executes dropped EXE
        PID:6032
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:5700
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\Windows Security Health Service\$77Windows Security Health Service.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2628
    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\Windows Security Health Service\$77Windows Security Health Service.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\Windows Security Health Service\$77Windows Security Health Service.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4436
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Set-MpPreference -ExclusionExtension exe,bat,dll,ps1;exit
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:5652
      • C:\Windows\System32\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /create /sc daily /tn "Windows Security Health Service_Task-DAILY-21PM" /TR "%MyFile%" /ST 21:00
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:2200

Network

MITRE ATT&CK Enterprise v16

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_a105cjev.iih.ps1
    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    Download Submit

  • C:\Users\Admin\AppData\Local\Temp\tmpC1C9.tmp.bat
    Filesize

    238B

    MD5

    61338bc1856ded15c13a876ed0a859fe

    SHA1

    7db4e220462b6f072411bb927738373ec06ebde3

    SHA256

    54d778f44684c583825b352f5d786c02b54ed2a272b805da49d7d062036c7498

    SHA512

    c171b16deb36bd674d09d42610095a8c6278a138ecdf357dd7d23baa164a423bfadd563de9b66caf0242c41920c5d8eae20464eba612e3af0dc470c98406db5e

    Download Submit

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\Windows Security Health Service\$77Windows Security Health Service.exe
    Filesize

    240KB

    MD5

    698082ab63f5a052cbe8988b609b006a

    SHA1

    c51ad34d4821fdec3281ff874b832fbc8bd1e846

    SHA256

    094380359816b954216cfd1c75e9be403a9a1ae88deff5886cb6366f255fab5b

    SHA512

    ef2e878cb3e62d2bd3969c985294957c6c1728f808c7a058ec18cfcaf8f9e16043960bc7be44477393f82a98af02416e0e038efb6ea6dd4f90334dfb02c70c3e

    Download Submit

  • memory/4336-0-0x00007FFAC8CF3000-0x00007FFAC8CF5000-memory.dmp

    Filesize

    8KB

    Download

  • memory/4336-1-0x0000000000490000-0x00000000004D0000-memory.dmp

    Filesize

    256KB

    Download

  • memory/4336-2-0x00007FFAC8CF0000-0x00007FFAC97B1000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/4336-3-0x00007FFAC8CF3000-0x00007FFAC8CF5000-memory.dmp

    Filesize

    8KB

    Download

  • memory/4336-4-0x00007FFAC8CF0000-0x00007FFAC97B1000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/4336-10-0x00007FFAC8CF0000-0x00007FFAC97B1000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/5652-19-0x000001614BAD0000-0x000001614BAF2000-memory.dmp

    Filesize

    136KB

    Download