Analysis

  • max time kernel
    141s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/12/2022, 18:13

General

  • Target

    1c3ff34a927847f718c004f19be84a23882b549ffaf1aa77f87c69b0f3c0a7e7.exe

  • Size

    156KB

  • MD5

    66a502dc76e48ece9d93b9b5818b4f10

  • SHA1

    2e18c18e025b73870bed3bd5cbaa0981bf65cf7d

  • SHA256

    1c3ff34a927847f718c004f19be84a23882b549ffaf1aa77f87c69b0f3c0a7e7

  • SHA512

    f7e0847a10c008d87fe715eb551ee1f0957021e549d8a3b9104270d8ad25a9164fb46d14c05298bcb213bc49fa62738bae3b3f67a053716a49a5e1f02680891b

  • SSDEEP

    3072:ilikxQUzHLV/sidu5k9AvVt7G9K7b+EdK5upvq9nV5P5ghIvX6gKEzeGAHVNVNbE:ilikxQU6w3BpiOh

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Reads local data of messenger clients 2 TTPs

    Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1c3ff34a927847f718c004f19be84a23882b549ffaf1aa77f87c69b0f3c0a7e7.exe
    "C:\Users\Admin\AppData\Local\Temp\1c3ff34a927847f718c004f19be84a23882b549ffaf1aa77f87c69b0f3c0a7e7.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4400
    • C:\Users\Admin\AppData\Local\Temp\Friendster Bruteforce.exe
      "C:\Users\Admin\AppData\Local\Temp\Friendster Bruteforce.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetWindowsHookEx
      PID:4932
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4400 -s 852
      2⤵
      • Program crash
      PID:4900
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4400 -ip 4400
    1⤵
      PID:4860

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\Friendster Bruteforce.exe

      Filesize

      114KB

      MD5

      6e86cc4f7eab19bd067fac6b3c955b40

      SHA1

      a72b9d3b853e899e7e62c0f38f4234655f967d1e

      SHA256

      0a661ffcfd3daeea0fcce984716db040d41d51d7539f87f9dd65056d0562568a

      SHA512

      008efcf74fd7eb1a22491452d77a8172b95cdfd6006dc25706fe42ae906529ecce2b24bf3e0cce80ba9ba5a418c49d0144160b0d0fec1a62eaac1e08a648b3b8

    • C:\Users\Admin\AppData\Local\Temp\Friendster Bruteforce.exe

      Filesize

      114KB

      MD5

      6e86cc4f7eab19bd067fac6b3c955b40

      SHA1

      a72b9d3b853e899e7e62c0f38f4234655f967d1e

      SHA256

      0a661ffcfd3daeea0fcce984716db040d41d51d7539f87f9dd65056d0562568a

      SHA512

      008efcf74fd7eb1a22491452d77a8172b95cdfd6006dc25706fe42ae906529ecce2b24bf3e0cce80ba9ba5a418c49d0144160b0d0fec1a62eaac1e08a648b3b8

    • memory/4932-135-0x000000001C100000-0x000000001CB36000-memory.dmp

      Filesize

      10.2MB

    • memory/4932-136-0x0000000000D4A000-0x0000000000D4F000-memory.dmp

      Filesize

      20KB

    • memory/4932-137-0x0000000000D4A000-0x0000000000D4F000-memory.dmp

      Filesize

      20KB