Overview

overview

10

Static

static

Compito ma...df.exe

windows7_x64

10

Compito ma...df.exe

windows10_x64

10

Resubmissions

06-03-2021 22:16

210306-flkmay1p1a 10

12-02-2021 09:25

210212-1dqmyv511e 10

Analysis

  • max time kernel
    149s
  • max time network
    122s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    06-03-2021 22:16

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General

  • Target

    Compito matematica.pdf.exe

  • Size

    606KB

  • MD5

    4e890ba5a4f6fd63727c0005daa654dd

  • SHA1

    e9ade30c93942c3f5928522552dd01eb25a9e9db

  • SHA256

    e1c7d34fc0138d018f9e947af3dac7ec4d0fe9751dd1bc4424b185a92ca4bc51

  • SHA512

    177badec70b21ed1b94a8a235535249c94b72e21fc62bae1e8c32e44b9495006687a2ef7545256ddaa2c167d870515de45e9aea524e3081135fa901532af6477

Score
10/10
jigsawpersistenceransomwarespyware

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 1 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.

    spyware
  • 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.

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Compito matematica.pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\Compito matematica.pdf.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:4684
    • C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
      "C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe" C:\Users\Admin\AppData\Local\Temp\Compito?matematica.pdf.exe
      2⤵
      • Executes dropped EXE
      • Modifies extensions of user files
      • Drops file in Program Files directory
      PID:1012
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /4
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:3396

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

1
T1081

Discovery

System Information Discovery

2
T1082

Query Registry

1
T1012

Peripheral Device Discovery

1
T1120

Lateral Movement

Collection

Data from Local System

1
T1005

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
    MD5

    4e890ba5a4f6fd63727c0005daa654dd

    SHA1

    e9ade30c93942c3f5928522552dd01eb25a9e9db

    SHA256

    e1c7d34fc0138d018f9e947af3dac7ec4d0fe9751dd1bc4424b185a92ca4bc51

    SHA512

    177badec70b21ed1b94a8a235535249c94b72e21fc62bae1e8c32e44b9495006687a2ef7545256ddaa2c167d870515de45e9aea524e3081135fa901532af6477

    Download Submit
  • C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
    MD5

    4e890ba5a4f6fd63727c0005daa654dd

    SHA1

    e9ade30c93942c3f5928522552dd01eb25a9e9db

    SHA256

    e1c7d34fc0138d018f9e947af3dac7ec4d0fe9751dd1bc4424b185a92ca4bc51

    SHA512

    177badec70b21ed1b94a8a235535249c94b72e21fc62bae1e8c32e44b9495006687a2ef7545256ddaa2c167d870515de45e9aea524e3081135fa901532af6477

    Download Submit
  • C:\Users\Admin\AppData\Roaming\Frfx\firefox.exe
    MD5

    4e890ba5a4f6fd63727c0005daa654dd

    SHA1

    e9ade30c93942c3f5928522552dd01eb25a9e9db

    SHA256

    e1c7d34fc0138d018f9e947af3dac7ec4d0fe9751dd1bc4424b185a92ca4bc51

    SHA512

    177badec70b21ed1b94a8a235535249c94b72e21fc62bae1e8c32e44b9495006687a2ef7545256ddaa2c167d870515de45e9aea524e3081135fa901532af6477

    Download Submit
  • memory/1012-4-0x0000000000000000-mapping.dmp
    Download
  • memory/1012-7-0x00007FFEEB6A0000-0x00007FFEEC040000-memory.dmp
    Filesize

    9.6MB

    Download
  • memory/1012-8-0x00000000015F0000-0x00000000015F2000-memory.dmp
    Filesize

    8KB

    Download
  • memory/1012-10-0x00000000015F7000-0x00000000015F9000-memory.dmp
    Filesize

    8KB

    Download
  • memory/1012-11-0x00000000015F9000-0x00000000015FA000-memory.dmp
    Filesize

    4KB

    Download
  • memory/4684-2-0x00007FFEEB6A0000-0x00007FFEEC040000-memory.dmp
    Filesize

    9.6MB

    Download
  • memory/4684-3-0x0000000000950000-0x0000000000952000-memory.dmp
    Filesize

    8KB

    Download