Overview

overview

10

Static

static

de8636c5d8...a4.exe

windows7-x64

10

de8636c5d8...a4.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    169s
  • max time network
    190s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-11-2022 14:06

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General

  • Target

    de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe

  • Size

    866KB

  • MD5

    17d02350b80c3c03c0be2b1acab650d1

  • SHA1

    775181f6686d21806ba7e6fe4ae1ecdc82d0157f

  • SHA256

    de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4

  • SHA512

    e61b19867eb0aff9d43ab7f13ac73217d0bd244e8b908eb902940315d77c3df67fbde40f7d80d602d8f491065fdb98791deb5f3fd4c122ef010f09616d1aaade

  • SSDEEP

    3072:dBUyU7/NUauKvxUjUYqDbf5PBb6Tx3zU5IYUeyUwgUn1UdjgUtGU4rZ/ME+h0UIx:CQdx8nHZtwjWK3FFQgzv1x5

Score
10/10
asyncratdefaultpersistencerat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

hgjvhnfgg.duckdns.org:8057

Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers.

    ratasyncrat
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
    persistence
  • Async RAT payload 1 IoCs
    rat
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Suspicious use of NtSetInformationThreadHideFromDebugger 13 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Delays execution with timeout.exe 1 IoCs
    evasion
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe
    "C:\Users\Admin\AppData\Local\Temp\de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks computer location settings
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1668
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4868
      • C:\Windows\SysWOW64\timeout.exe
        timeout 1
        3⤵
        • Delays execution with timeout.exe
        PID:3684
    • C:\Users\Admin\AppData\Local\Temp\de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe
      "C:\Users\Admin\AppData\Local\Temp\de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe"
      2⤵
        PID:1444
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1668 -s 1620
        2⤵
        • Program crash
        PID:1248
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 204 -p 1668 -ip 1668
      1⤵
        PID:228

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Initial Access

      Execution

      Persistence

      Winlogon Helper DLL

      1
      T1004

      Registry Run Keys / Startup Folder

      1
      T1060

      Privilege Escalation

      Defense Evasion

      Modify Registry

      2
      T1112

      Credential Access

      Discovery

      Query Registry

      1
      T1012

      System Information Discovery

      2
      T1082

      Lateral Movement

      Collection

      Exfiltration

      Command and Control

      Impact

      Replay Monitor

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      Downloads

      • memory/1444-137-0x0000000000000000-mapping.dmp
        Download
      • memory/1444-138-0x0000000000400000-0x0000000000412000-memory.dmp
        Filesize

        72KB

        Download
      • memory/1668-132-0x0000000000E50000-0x0000000000F2C000-memory.dmp
        Filesize

        880KB

        Download
      • memory/1668-133-0x0000000005870000-0x000000000590C000-memory.dmp
        Filesize

        624KB

        Download
      • memory/1668-134-0x0000000005FC0000-0x0000000006564000-memory.dmp
        Filesize

        5.6MB

        Download
      • memory/3684-136-0x0000000000000000-mapping.dmp
        Download
      • memory/4868-135-0x0000000000000000-mapping.dmp
        Download