Overview

overview

10

Static

static

winserv.exe

windows10-1703-x64

10

Analysis

  • max time kernel
    67s
  • max time network
    69s
  • platform
    windows10-1703_x64
  • resource
    win10-20220812-en
  • resource tags

    arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system
  • submitted
    17-01-2023 10:40

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General

  • Target

    winserv.exe

  • Size

    10.2MB

  • MD5

    3f4f5a6cb95047fea6102bd7d2226aa9

  • SHA1

    fc09dd898b6e7ff546e4a7517a715928fbafc297

  • SHA256

    99fd9e75e6241eff30e01c5b59df9e901fb24d12bee89c069cc6158f78b3cc98

  • SHA512

    de5c8155f426a4e55953ae85410c7d9ad84f5643c30865fc036d1270310e28754772bd0f3093444a16ef0c1fa3db6c56301746fb5e7f03ce692bfdad0c4fb688

  • SSDEEP

    196608:iz+UZcWP4jBrfWgEgIV8Rzy7Vj4FZvEo:i6UZcWWeVj4FZ

Score
10/10
rmsrattrojan

Malware Config

Signatures

  • RMS

    Remote Manipulator System (RMS) is a remote access tool developed by Russian organization TektonIT.

    trojanratrms
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops file in Windows directory 2 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Modifies data under HKEY_USERS 2 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 62 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of SetWindowsHookEx 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\winserv.exe
    "C:\Users\Admin\AppData\Local\Temp\winserv.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    PID:2780
    • C:\Users\Admin\AppData\Local\Temp\winserv.exe
      C:\Users\Admin\AppData\Local\Temp\winserv.exe -second
      2⤵
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:4904
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /7
    1⤵
    • Drops file in Windows directory
    • Checks SCSI registry key(s)
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:3232
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:3152

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Persistence

    Privilege Escalation

    Defense Evasion

    Credential Access

    Discovery

    Query Registry

    2
    T1012

    System Information Discovery

    2
    T1082

    Peripheral Device Discovery

    1
    T1120

    Lateral Movement

    Collection

    Exfiltration

    Command and Control

    Impact

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/2780-116-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-117-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-118-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-119-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-120-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-121-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-122-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-124-0x0000000000400000-0x0000000000E31000-memory.dmp
      Filesize

      10.2MB

      Download
    • memory/2780-123-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-125-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-126-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-127-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-128-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-129-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-130-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-131-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-132-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-133-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-135-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-136-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-137-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-138-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-140-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-141-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-143-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-144-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-146-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-148-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-150-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-153-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-155-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-158-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-160-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-163-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-165-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-166-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-164-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-162-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-161-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-159-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-157-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-156-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-154-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-152-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-151-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-149-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-147-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-145-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-142-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-139-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-134-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-167-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-168-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-169-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-170-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-171-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-172-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-173-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-174-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-175-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-176-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-177-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-178-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-179-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-180-0x0000000077A60000-0x0000000077BEE000-memory.dmp
      Filesize

      1.6MB

      Download
    • memory/2780-204-0x0000000000400000-0x0000000000E31000-memory.dmp
      Filesize

      10.2MB

      Download
    • memory/4904-273-0x0000000000400000-0x0000000000E31000-memory.dmp
      Filesize

      10.2MB

      Download