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Overview

overview

10

Static

static

10

shadow.exe

windows7-x64

10

shadow.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    147s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/03/2023, 01:45

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General

  • Target

    shadow.exe

  • Size

    45KB

  • MD5

    b0c54754039e4c312c81cc1de388e1e6

  • SHA1

    c00e8d078f1224156e5f34720732891afe72d654

  • SHA256

    aa199fbb289e048c5abaa334be3eb172175cf53e736d3a15ca32549086c99a8c

  • SHA512

    c58117d3f377b6b7c1bba94d56049927a2a0e76e4243fa217ed8af1e80365939a5d3441572dea3c079403c07cad36ffebd35703e69fb258518244f2ca25d8bc8

  • SSDEEP

    768:DuU2VTwkbBHWU7TZcFmo2qjLKjGKG6PIyzjbFgX3i0ZHPcZekvlaBDZDx:DuU2VTwAJM2aKYDy3bCXS0ZC+dDx

Score
10/10
asyncratdefaultrat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

klept0wiz-33913.portmap.host:33913

Mutex

guaeiofj398ajgka340gka9wk3f09jq3ad

Attributes
  • delay

    3

  • install

    true

  • install_file

    Management.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). Likely ransomware behaviour.

  • 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 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\shadow.exe
    "C:\Users\Admin\AppData\Local\Temp\shadow.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2528
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Management" /tr '"C:\Users\Admin\AppData\Roaming\Management.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4784
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "Management" /tr '"C:\Users\Admin\AppData\Roaming\Management.exe"'
        3⤵
        • Creates scheduled task(s)
        PID:3332
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp79B9.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3712
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:3576
      • C:\Users\Admin\AppData\Roaming\Management.exe
        "C:\Users\Admin\AppData\Roaming\Management.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:4104

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp79B9.tmp.bat
    Filesize

    154B

    MD5

    23f77b559af0a67fd14dc410ee3f5fff

    SHA1

    acf79d182bba3fe47c6f23e4047c9ffacbc1e4d9

    SHA256

    bba4e4e1bee4b198cfd1a2c29114e5f0f92a3e29be18c837d793caf547c7b93c

    SHA512

    8d10d45fcd82cc73941c39f8b5da709234a0011f6a95ac826c11b68f7be42eb92c65ac57b0368d0bbf8fb50f7914a364b0018566c5cd8aca1210038b77b34b18

    Download Submit

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

    45KB

    MD5

    b0c54754039e4c312c81cc1de388e1e6

    SHA1

    c00e8d078f1224156e5f34720732891afe72d654

    SHA256

    aa199fbb289e048c5abaa334be3eb172175cf53e736d3a15ca32549086c99a8c

    SHA512

    c58117d3f377b6b7c1bba94d56049927a2a0e76e4243fa217ed8af1e80365939a5d3441572dea3c079403c07cad36ffebd35703e69fb258518244f2ca25d8bc8

    Download Submit

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

    45KB

    MD5

    b0c54754039e4c312c81cc1de388e1e6

    SHA1

    c00e8d078f1224156e5f34720732891afe72d654

    SHA256

    aa199fbb289e048c5abaa334be3eb172175cf53e736d3a15ca32549086c99a8c

    SHA512

    c58117d3f377b6b7c1bba94d56049927a2a0e76e4243fa217ed8af1e80365939a5d3441572dea3c079403c07cad36ffebd35703e69fb258518244f2ca25d8bc8

    Download Submit

  • memory/2528-133-0x0000000000D60000-0x0000000000D72000-memory.dmp

    Filesize

    72KB

    Download

  • memory/2528-134-0x00000000057E0000-0x00000000057F0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2528-135-0x0000000005A90000-0x0000000005B2C000-memory.dmp

    Filesize

    624KB

    Download

  • memory/4104-144-0x0000000002BD0000-0x0000000002BE0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/4104-145-0x0000000002BD0000-0x0000000002BE0000-memory.dmp

    Filesize

    64KB

    Download