Overview

overview

10

Static

static

7

71cf98c829...18.exe

windows7-x64

10

71cf98c829...18.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    71cf98c82961d83d08279eb8233de701_JaffaCakes118

  • Size

    488KB

  • Sample

    240525-nm6e5sfc62

  • MD5

    71cf98c82961d83d08279eb8233de701

  • SHA1

    5e026feb4eb5f9472ae51131afc69893c7a09bd7

  • SHA256

    a92d97fb7a8d612e1070e584550240e7ab7b497ff329cca0d5df1ce0201eb90f

  • SHA512

    4cfff9664be73559cf8f5b0c1295765406e2b791d7a62db9063042b9161da619cfbe2c7b750688b0b2040af64cd614355dcf12d931b0519ada719eb9b8985972

  • SSDEEP

    12288:ZMMpXKb0hNGh1kG0HWnAlUoU866w0B2uJ2s4otqFCJrW9FqvSbqsHasgXhFHDAG/:ZMMpXS0hN0V0HZZSGB2uJ2s4otqFCJrr

Score
10/10
aspackv2persistenceransomware

Malware Config

Targets

    • Target

      71cf98c82961d83d08279eb8233de701_JaffaCakes118

    • Size

      488KB

    • MD5

      71cf98c82961d83d08279eb8233de701

    • SHA1

      5e026feb4eb5f9472ae51131afc69893c7a09bd7

    • SHA256

      a92d97fb7a8d612e1070e584550240e7ab7b497ff329cca0d5df1ce0201eb90f

    • SHA512

      4cfff9664be73559cf8f5b0c1295765406e2b791d7a62db9063042b9161da619cfbe2c7b750688b0b2040af64cd614355dcf12d931b0519ada719eb9b8985972

    • SSDEEP

      12288:ZMMpXKb0hNGh1kG0HWnAlUoU866w0B2uJ2s4otqFCJrW9FqvSbqsHasgXhFHDAG/:ZMMpXS0hN0V0HZZSGB2uJ2s4otqFCJrr

    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