Overview

overview

10

Static

static

10

cryptolaemus

windows10-2004-x64

10

cryptolaemus

windows11-21h2-x64

10

Analysis

  • max time kernel
    139s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240704-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-07-2024 06:31

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General

  • Target

    70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe

  • Size

    47KB

  • MD5

    670d1014ec5713d005f8ddfefc495a9e

  • SHA1

    91362eaf33dc55e4d970fbefbda975be32628d6b

  • SHA256

    70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd

  • SHA512

    175827b48f35899e89fcbdacd2e98b378b92abc8e7a1c225441f57a46d02fea838104e3d6480a137f401c72e2d7979ff3db7a74d5c52e84a0733246f0fa5384f

  • SSDEEP

    768:EuwpFTAY3IQWUe9jqmo2qLPzXR8myUdPIvfc2C0b2lnNPVPUXHyk/UQsS25BDZ8x:EuwpFTA4/2KRx0vfb9bgnTUXHmpS2nd+

Score
10/10
asyncratdefaultdiscoveryrat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

176.111.174.140:6606

176.111.174.140:7707

176.111.174.140:8808
Mutex

PWhSiRkcxVoa

Attributes
  • delay

    3

  • install

    true

  • install_file

    svchost.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers written in C#.

    ratasyncrat
  • Async RAT payload 1 IoCs
    rat
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

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

    discovery
  • Delays execution with timeout.exe 1 IoCs
    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 23 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe
    "C:\Users\Admin\AppData\Local\Temp\70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4472
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3476
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2036
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp2527.tmp.bat""
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4732
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:812
      • C:\Users\Admin\AppData\Roaming\svchost.exe
        "C:\Users\Admin\AppData\Roaming\svchost.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:3832

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp2527.tmp.bat
    Filesize

    151B

    MD5

    1b0a2682e9065542a6b28047d2eaaa24

    SHA1

    8eb3528c41c847a30058a9d3f1eafe4fec386602

    SHA256

    11007920d5d478691a72bcb434d65770d679890461fa2de93fa5c17abbbdb4c7

    SHA512

    5a7d9d3b8f9fb82b86708ce14b19d10689bf393686525afbce7a44abf5b7f8962cd43ab7eb257f798a5663a2415f30bf529238886a02fdcd4800f9c3b5cab3ab

    Download Submit

  • C:\Users\Admin\AppData\Roaming\svchost.exe
    Filesize

    47KB

    MD5

    670d1014ec5713d005f8ddfefc495a9e

    SHA1

    91362eaf33dc55e4d970fbefbda975be32628d6b

    SHA256

    70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd

    SHA512

    175827b48f35899e89fcbdacd2e98b378b92abc8e7a1c225441f57a46d02fea838104e3d6480a137f401c72e2d7979ff3db7a74d5c52e84a0733246f0fa5384f

    Download Submit

  • memory/3832-13-0x0000000074B60000-0x0000000075310000-memory.dmp

    Filesize

    7.7MB

    Download

  • memory/3832-16-0x0000000006DB0000-0x0000000007354000-memory.dmp

    Filesize

    5.6MB

    Download

  • memory/3832-17-0x00000000062D0000-0x0000000006336000-memory.dmp

    Filesize

    408KB

    Download

  • memory/3832-18-0x0000000074B60000-0x0000000075310000-memory.dmp

    Filesize

    7.7MB

    Download

  • memory/4472-0-0x0000000074B6E000-0x0000000074B6F000-memory.dmp

    Filesize

    4KB

    Download

  • memory/4472-1-0x0000000000CD0000-0x0000000000CE2000-memory.dmp

    Filesize

    72KB

    Download

  • memory/4472-2-0x0000000074B60000-0x0000000075310000-memory.dmp

    Filesize

    7.7MB

    Download

  • memory/4472-3-0x00000000056B0000-0x000000000574C000-memory.dmp

    Filesize

    624KB

    Download

  • memory/4472-9-0x0000000074B60000-0x0000000075310000-memory.dmp

    Filesize

    7.7MB

    Download