Overview

overview

10

Static

static

3

JaffaCakes...ab.exe

windows7-x64

10

JaffaCakes...ab.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    JaffaCakes118_95740da3398074068a3996678d1bd6ab

  • Size

    492KB

  • Sample

    250329-yepsjawnx7

  • MD5

    95740da3398074068a3996678d1bd6ab

  • SHA1

    de012d8f2e88279034b24544e88df79b500234e7

  • SHA256

    fba54a1e535fd297b65592dfcdf1fb54a75af0a4e496d924ea15eac85eec1a2e

  • SHA512

    cfac8aec23668a899e878bdc133475567b55fe4dfae735356f0756927fdf324380f74982cad2d64f69c4ef0894b8bd9d7b74c1e884298170ed3df103ac13eaa2

  • SSDEEP

    6144:+jg5pk1GS0xX3lPtbNN/DNRgkpiZzjhDQ0oeGF91YVusYJx+9sisyYpFTOOzHNNl:mg5pBHxXptbN5ZRgOiBjw/C0AWzFjRo2

Score
10/10
pykspadefense_evasiondiscoverypersistencetrojanworm

Malware Config

Targets

    • Target

      JaffaCakes118_95740da3398074068a3996678d1bd6ab

    • Size

      492KB

    • MD5

      95740da3398074068a3996678d1bd6ab

    • SHA1

      de012d8f2e88279034b24544e88df79b500234e7

    • SHA256

      fba54a1e535fd297b65592dfcdf1fb54a75af0a4e496d924ea15eac85eec1a2e

    • SHA512

      cfac8aec23668a899e878bdc133475567b55fe4dfae735356f0756927fdf324380f74982cad2d64f69c4ef0894b8bd9d7b74c1e884298170ed3df103ac13eaa2

    • SSDEEP

      6144:+jg5pk1GS0xX3lPtbNN/DNRgkpiZzjhDQ0oeGF91YVusYJx+9sisyYpFTOOzHNNl:mg5pBHxXptbN5ZRgOiBjw/C0AWzFjRo2

    Score
    10/10
    pykspawormdefense_evasiondiscoverypersistencetrojan

    • Modifies WinLogon for persistence

      persistence

    • Pykspa

      Pykspa is a worm spreads via Skype uses DGA and it's written in C++.

      wormpykspa

    • Pykspa family

      pykspa

    • UAC bypass

      defense_evasiontrojan

    • Detect Pykspa worm

      worm

    • Adds policy Run key to start application

      persistence

    • Disables RegEdit via registry modification

      defense_evasion

    • Checks computer location settings

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

    • Executes dropped EXE

    • Adds Run key to start application

      persistence

    • Checks whether UAC is enabled

      defense_evasiontrojan

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

3
T1547

Registry Run Keys / Startup Folder

2
T1547.001

Winlogon Helper DLL

1
T1547.004

Privilege Escalation

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Boot or Logon Autostart Execution

3
T1547

Registry Run Keys / Startup Folder

2
T1547.001

Winlogon Helper DLL

1
T1547.004

Defense Evasion

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Impair Defenses

1
T1562

Disable or Modify Tools

1
T1562.001

Modify Registry

5
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

3
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks