Overview

overview

10

Static

static

7

fc5796c6bc...18.exe

windows7-x64

10

fc5796c6bc...18.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    fc5796c6bc7f06c67112e6c5bef2374f_JaffaCakes118

  • Size

    972KB

  • Sample

    240420-kcfj7ace56

  • MD5

    fc5796c6bc7f06c67112e6c5bef2374f

  • SHA1

    a4faac94e6223032df390926f1406f30ec531c54

  • SHA256

    b508c3acf1b207fab5d5158dfefb23b354c5d20386f7dbfdb69f0ceb44da877b

  • SHA512

    54d7b27ec163a13b897963d29b52089e490cc379f2a8fa8a2ad650ca8b7d9df8968e1eb3ed823afb4108521bfa5ecd31a6244637b42a6911f042df53998a941f

  • SSDEEP

    12288:5MMpXKb0hNGh1kG0HWnALbjcgZD5+6aYMasAYXG3W5ShFgFDTfN:5MMpXS0hN0V0HzPyBashXG3W5SGN

Score
10/10
aspackv2persistenceransomware

Malware Config

Targets

    • Target

      fc5796c6bc7f06c67112e6c5bef2374f_JaffaCakes118

    • Size

      972KB

    • MD5

      fc5796c6bc7f06c67112e6c5bef2374f

    • SHA1

      a4faac94e6223032df390926f1406f30ec531c54

    • SHA256

      b508c3acf1b207fab5d5158dfefb23b354c5d20386f7dbfdb69f0ceb44da877b

    • SHA512

      54d7b27ec163a13b897963d29b52089e490cc379f2a8fa8a2ad650ca8b7d9df8968e1eb3ed823afb4108521bfa5ecd31a6244637b42a6911f042df53998a941f

    • SSDEEP

      12288:5MMpXKb0hNGh1kG0HWnALbjcgZD5+6aYMasAYXG3W5ShFgFDTfN:5MMpXS0hN0V0HzPyBashXG3W5SGN

    Score
    10/10
    aspackv2persistenceransomware

    • Modifies WinLogon for persistence

      persistence

    • Renames multiple (91) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

      ransomware

    • ASPack v2.12-2.42

      Detects executables packed with ASPack v2.12-2.42

      aspackv2

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Drops autorun.inf file

      Malware can abuse Windows Autorun to spread further via attached volumes.

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Replication Through Removable Media

1
T1091

Execution

Persistence

Boot or Logon Autostart Execution

1
T1547

Winlogon Helper DLL

1
T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Winlogon Helper DLL

1
T1547.004

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

2
T1082

Lateral Movement

Replication Through Removable Media

1
T1091

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks