Overview

overview

10

Static

static

jigsaw.exe

windows7-x64

10

jigsaw.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    110s
  • max time network
    31s
  • platform
    windows7_x64
  • resource
    win7-20221111-es
  • resource tags

    arch:x64arch:x86image:win7-20221111-eslocale:es-esos:windows7-x64systemwindows
  • submitted
    13-01-2023 03:55

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General

  • Target

    jigsaw.exe

  • Size

    283KB

  • MD5

    2773e3dc59472296cb0024ba7715a64e

  • SHA1

    27d99fbca067f478bb91cdbcb92f13a828b00859

  • SHA256

    3ae96f73d805e1d3995253db4d910300d8442ea603737a1428b613061e7f61e7

  • SHA512

    6ef530b209f8ec459cca66dbf2c31ec96c5f7d609f17fa3b877d276968032fbc6132ea4a45ed1450fb6c5d730a7c9349bf4481e28befaea6b119ec0ded842262

  • SSDEEP

    6144:7fukPLPvucHiQQQ4uuy9ApZbZWxcZt+kTfMLJTOAZiYSXjjeqXus:7fu5cCT7yYlWi8kTfMLJTOAZiYSXjyqX

Score
10/10
jigsawpersistenceransomwarespywarestealer

Malware Config

Signatures

  • Jigsaw Ransomware

    Ransomware family first created in 2016. Named based on wallpaper set after infection in the early versions.

    ransomwarejigsaw
  • Executes dropped EXE 1 IoCs
  • Modifies extensions of user files 6 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 17 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 43 IoCs
  • Suspicious use of SendNotifyMessage 43 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\jigsaw.exe
    "C:\Users\Admin\AppData\Local\Temp\jigsaw.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:1980
    • C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
      "C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe" C:\Users\Admin\AppData\Local\Temp\jigsaw.exe
      2⤵
      • Executes dropped EXE
      • Modifies extensions of user files
      • Drops file in Program Files directory
      PID:1792
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /4
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:480

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
    Filesize

    283KB

    MD5

    2773e3dc59472296cb0024ba7715a64e

    SHA1

    27d99fbca067f478bb91cdbcb92f13a828b00859

    SHA256

    3ae96f73d805e1d3995253db4d910300d8442ea603737a1428b613061e7f61e7

    SHA512

    6ef530b209f8ec459cca66dbf2c31ec96c5f7d609f17fa3b877d276968032fbc6132ea4a45ed1450fb6c5d730a7c9349bf4481e28befaea6b119ec0ded842262

    Download Submit

  • C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
    Filesize

    283KB

    MD5

    2773e3dc59472296cb0024ba7715a64e

    SHA1

    27d99fbca067f478bb91cdbcb92f13a828b00859

    SHA256

    3ae96f73d805e1d3995253db4d910300d8442ea603737a1428b613061e7f61e7

    SHA512

    6ef530b209f8ec459cca66dbf2c31ec96c5f7d609f17fa3b877d276968032fbc6132ea4a45ed1450fb6c5d730a7c9349bf4481e28befaea6b119ec0ded842262

    Download Submit

  • memory/480-63-0x0000000140000000-0x00000001405E8000-memory.dmp

    Filesize

    5.9MB

    Download

  • memory/480-66-0x0000000140000000-0x00000001405E8000-memory.dmp

    Filesize

    5.9MB

    Download

  • memory/480-65-0x0000000140000000-0x00000001405E8000-memory.dmp

    Filesize

    5.9MB

    Download

  • memory/480-64-0x0000000140000000-0x00000001405E8000-memory.dmp

    Filesize

    5.9MB

    Download

  • memory/1792-61-0x000007FEEE6F0000-0x000007FEEF786000-memory.dmp

    Filesize

    16.6MB

    Download

  • memory/1792-60-0x000007FEF2D30000-0x000007FEF3753000-memory.dmp

    Filesize

    10.1MB

    Download

  • memory/1792-67-0x0000000001F4B000-0x0000000001F6A000-memory.dmp

    Filesize

    124KB

    Download

  • memory/1980-54-0x000007FEF2D30000-0x000007FEF3753000-memory.dmp

    Filesize

    10.1MB

    Download

  • memory/1980-56-0x000007FEFBA01000-0x000007FEFBA03000-memory.dmp

    Filesize

    8KB

    Download

  • memory/1980-55-0x000007FEEE6F0000-0x000007FEEF786000-memory.dmp

    Filesize

    16.6MB

    Download