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Overview

overview

10

Static

static

3

a21f61fc98...18.exe

windows7-x64

10

a21f61fc98...18.exe

windows10-2004-x64

10

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General

  • Target

    a21f61fc9870af66d5cbeb8578fcb57d_JaffaCakes118

  • Size

    211KB

  • Sample

    240817-l41vwashrn

  • MD5

    a21f61fc9870af66d5cbeb8578fcb57d

  • SHA1

    09144ec09f6e92a5c918cf2153c72c011d0855e4

  • SHA256

    c949b846121b17c66e65b196e24872ba117861dfe41a491e3ee361d26092eec0

  • SHA512

    964563f97753e8e5568dad77b85258ce2eee57f4820070c009da54e7d983809646beaf39c0161883207cf6f09a9eb28176fcb7c3fb277daee43e5c7b7fbc9472

  • SSDEEP

    3072:bmHPiWYu4h+O+Dg1F7Y0qSZLalC59pb33xjqVbTBtlyAjH:b4TYu6+OzZlaA59p9GVptlyS

Score
10/10
discoveryevasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      a21f61fc9870af66d5cbeb8578fcb57d_JaffaCakes118

    • Size

      211KB

    • MD5

      a21f61fc9870af66d5cbeb8578fcb57d

    • SHA1

      09144ec09f6e92a5c918cf2153c72c011d0855e4

    • SHA256

      c949b846121b17c66e65b196e24872ba117861dfe41a491e3ee361d26092eec0

    • SHA512

      964563f97753e8e5568dad77b85258ce2eee57f4820070c009da54e7d983809646beaf39c0161883207cf6f09a9eb28176fcb7c3fb277daee43e5c7b7fbc9472

    • SSDEEP

      3072:bmHPiWYu4h+O+Dg1F7Y0qSZLalC59pb33xjqVbTBtlyAjH:b4TYu6+OzZlaA59p9GVptlyS

    Score
    10/10
    discoveryevasionpersistenceransomwarespywarestealertrojan

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (53) files with added filename extension

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

      ransomware

    • Blocklisted process makes network request

    • Checks computer location settings

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

    • Deletes itself

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

      spywarestealer

    • Adds Run key to start application

      persistence

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Hide Artifacts

1
T1564

Hidden Files and Directories

1
T1564.001

Impair Defenses

1
T1562

Disable or Modify Tools

1
T1562.001

Modify Registry

4
T1112

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Exfiltration

Impact

Tasks