Overview

overview

10

Static

static

1

Tax Return...765.js

windows7-x64

10

Tax Return...765.js

windows10-2004-x64

10

Analysis

  • max time kernel
    139s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20230712-en
  • resource tags

    arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
  • submitted
    18/07/2023, 13:07

Sharing

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General

  • Target

    Tax Returns of R58,765.js

  • Size

    1.1MB

  • MD5

    ab8fb67d6a83a17522570aa8a995dfab

  • SHA1

    dd6915a56f453933511a30fc9d235e4c52393bb6

  • SHA256

    b74a0e8adc5f0681405c94a684d6b887fdc20cd6d198d069f0981d6ba7d658c6

  • SHA512

    6ac13d034cdcdb96394fb54fcfbc7b842345ef07244e0dbfb9be886075d78c2c75f7ef084ecf42a68bfd961652fe54add127f66d82f6c97f83689355e16c571f

  • SSDEEP

    3072:QQ34n7OrQn9IfjRbFo0ivJYmFyyUaKYCHc1I4Cb1ch:QQVo

Score
10/10
wshrattrojan

Malware Config

Extracted

Family

wshrat

C2

http://harold.2waky.com:3609

Signatures

  • WSHRAT

    WSHRAT is a variant of Houdini worm and has vbs and js variants.

    trojanwshrat
  • Blocklisted process makes network request 17 IoCs
  • Drops startup file 2 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • Script User-Agent 16 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe "C:\Users\Admin\AppData\Local\Temp\Tax Returns of R58,765.js"
    1⤵
    • Drops startup file
    • Suspicious use of WriteProcessMemory
    PID:2792
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\Tax Returns of R58,765.js"
      2⤵
      • Blocklisted process makes network request
      • Drops startup file
      PID:2112

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Tax Returns of R58,765.js
    Filesize

    1.1MB

    MD5

    ab8fb67d6a83a17522570aa8a995dfab

    SHA1

    dd6915a56f453933511a30fc9d235e4c52393bb6

    SHA256

    b74a0e8adc5f0681405c94a684d6b887fdc20cd6d198d069f0981d6ba7d658c6

    SHA512

    6ac13d034cdcdb96394fb54fcfbc7b842345ef07244e0dbfb9be886075d78c2c75f7ef084ecf42a68bfd961652fe54add127f66d82f6c97f83689355e16c571f

    Download Submit

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Tax Returns of R58,765.js
    Filesize

    1.1MB

    MD5

    ab8fb67d6a83a17522570aa8a995dfab

    SHA1

    dd6915a56f453933511a30fc9d235e4c52393bb6

    SHA256

    b74a0e8adc5f0681405c94a684d6b887fdc20cd6d198d069f0981d6ba7d658c6

    SHA512

    6ac13d034cdcdb96394fb54fcfbc7b842345ef07244e0dbfb9be886075d78c2c75f7ef084ecf42a68bfd961652fe54add127f66d82f6c97f83689355e16c571f

    Download Submit

  • C:\Users\Admin\AppData\Roaming\Tax Returns of R58,765.js
    Filesize

    1.1MB

    MD5

    ab8fb67d6a83a17522570aa8a995dfab

    SHA1

    dd6915a56f453933511a30fc9d235e4c52393bb6

    SHA256

    b74a0e8adc5f0681405c94a684d6b887fdc20cd6d198d069f0981d6ba7d658c6

    SHA512

    6ac13d034cdcdb96394fb54fcfbc7b842345ef07244e0dbfb9be886075d78c2c75f7ef084ecf42a68bfd961652fe54add127f66d82f6c97f83689355e16c571f

    Download Submit