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Overview

overview

10

Static

static

10

251523fa1b...b2.exe

windows7-x64

10

251523fa1b...b2.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    70s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/06/2023, 08:01

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General

  • Target

    251523fa1b013d8ca82ab08f177d3ab2.exe

  • Size

    49KB

  • MD5

    251523fa1b013d8ca82ab08f177d3ab2

  • SHA1

    ff641e25cb287db90de6f59786a9a940aa2c5bee

  • SHA256

    515e5105f1bda9207f1342220ecaddc6dc04b8aa54149e7cc7ccb38225845d03

  • SHA512

    63316282cb55b46fbf5b4c95f4ec39cb59fd7b775c4c1dec4db502b8957ff41c31de3b7b7526c8bfe9c79d68070c433d78ce9d51848d51e9e57a3b3639367ef5

  • SSDEEP

    1536:luqY9T9xy2eD3bmXSTLNI98P0wx8vV9XdD4C:luqUT9xy2eD3bmsxI9S8vVhR4C

Score
10/10
asyncratdefaultrat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

nasihej725.hopto.org:6606

Mutex

Microsoft_6SI8OkPnk

Attributes
  • delay

    3

  • install

    true

  • install_file

    Windows Session Control.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 3 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).

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

    persistence
  • Delays execution with timeout.exe 1 IoCs
    evasion
  • Suspicious behavior: EnumeratesProcesses 23 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\251523fa1b013d8ca82ab08f177d3ab2.exe
    "C:\Users\Admin\AppData\Local\Temp\251523fa1b013d8ca82ab08f177d3ab2.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1520
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Windows Session Control" /tr '"C:\Users\Admin\AppData\Roaming\Windows Session Control.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:804
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "Windows Session Control" /tr '"C:\Users\Admin\AppData\Roaming\Windows Session Control.exe"'
        3⤵
        • Creates scheduled task(s)
        PID:2404
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp8988.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2128
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:2064
      • C:\Users\Admin\AppData\Roaming\Windows Session Control.exe
        "C:\Users\Admin\AppData\Roaming\Windows Session Control.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:4008

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp8988.tmp.bat
    Filesize

    167B

    MD5

    a95b18578d58859082fb9a6479bc8ac8

    SHA1

    88f104d619857fcaa6b231f375681a574747384e

    SHA256

    13cf07f15aed8dd720df774d38cdd0a682d43c0bf0444423fe13cf7a9580fdc5

    SHA512

    c8cf8601f4d1de398331b57b8188ee6f0a1249ef7e65b5eb1e97029fa154e01775fde887be9c2d4dcf317bf5d4d67f7b526933413d908d26b416864c00fe366e

    Download Submit

  • C:\Users\Admin\AppData\Roaming\Windows Session Control.exe
    Filesize

    49KB

    MD5

    251523fa1b013d8ca82ab08f177d3ab2

    SHA1

    ff641e25cb287db90de6f59786a9a940aa2c5bee

    SHA256

    515e5105f1bda9207f1342220ecaddc6dc04b8aa54149e7cc7ccb38225845d03

    SHA512

    63316282cb55b46fbf5b4c95f4ec39cb59fd7b775c4c1dec4db502b8957ff41c31de3b7b7526c8bfe9c79d68070c433d78ce9d51848d51e9e57a3b3639367ef5

    Download Submit

  • C:\Users\Admin\AppData\Roaming\Windows Session Control.exe
    Filesize

    49KB

    MD5

    251523fa1b013d8ca82ab08f177d3ab2

    SHA1

    ff641e25cb287db90de6f59786a9a940aa2c5bee

    SHA256

    515e5105f1bda9207f1342220ecaddc6dc04b8aa54149e7cc7ccb38225845d03

    SHA512

    63316282cb55b46fbf5b4c95f4ec39cb59fd7b775c4c1dec4db502b8957ff41c31de3b7b7526c8bfe9c79d68070c433d78ce9d51848d51e9e57a3b3639367ef5

    Download Submit

  • memory/1520-133-0x0000000000960000-0x0000000000972000-memory.dmp

    Filesize

    72KB

    Download

  • memory/1520-134-0x0000000005420000-0x0000000005430000-memory.dmp

    Filesize

    64KB

    Download

  • memory/1520-135-0x0000000005430000-0x0000000005496000-memory.dmp

    Filesize

    408KB

    Download

  • memory/1520-136-0x0000000005860000-0x00000000058FC000-memory.dmp

    Filesize

    624KB

    Download

  • memory/4008-145-0x0000000005620000-0x0000000005630000-memory.dmp

    Filesize

    64KB

    Download

  • memory/4008-146-0x00000000063D0000-0x0000000006974000-memory.dmp

    Filesize

    5.6MB

    Download

  • memory/4008-147-0x0000000005620000-0x0000000005630000-memory.dmp

    Filesize

    64KB

    Download