Overview

overview

10

Static

static

3

JaffaCakes...67.exe

windows7-x64

10

JaffaCakes...67.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    JaffaCakes118_8e0598bce0b73645c97c9f7db2559c67

  • Size

    600KB

  • Sample

    250329-v6jh2szlz4

  • MD5

    8e0598bce0b73645c97c9f7db2559c67

  • SHA1

    bc9a5043bf0c7ea5f476f02b350d700c333b773f

  • SHA256

    126804dd7e7c5b137beee74e61e9be1bda1f98237d47653e27a5d84838d221dd

  • SHA512

    54f62747968fdfb5a136947c70e49f30795f4ceba86aeb9ed2789e82c38c3be89e5305b2678ccf7bd88b898bfc3c38de8efc8f44fa1c7a464defb61133044b31

  • SSDEEP

    6144:Jj6/wndfF/gl0LQIk8DR3dEuAI7pEfxsZozAm9TMdGQLUg1nYmefPImdrion:56onxOp8FySpE5zvIdtU+Ymef

Score
10/10
pykspadefense_evasiondiscoverypersistenceprivilege_escalationtrojanworm

Malware Config

Targets

    • Target

      JaffaCakes118_8e0598bce0b73645c97c9f7db2559c67

    • Size

      600KB

    • MD5

      8e0598bce0b73645c97c9f7db2559c67

    • SHA1

      bc9a5043bf0c7ea5f476f02b350d700c333b773f

    • SHA256

      126804dd7e7c5b137beee74e61e9be1bda1f98237d47653e27a5d84838d221dd

    • SHA512

      54f62747968fdfb5a136947c70e49f30795f4ceba86aeb9ed2789e82c38c3be89e5305b2678ccf7bd88b898bfc3c38de8efc8f44fa1c7a464defb61133044b31

    • SSDEEP

      6144:Jj6/wndfF/gl0LQIk8DR3dEuAI7pEfxsZozAm9TMdGQLUg1nYmefPImdrion:56onxOp8FySpE5zvIdtU+Ymef

    Score
    10/10
    pykspadefense_evasiondiscoverypersistenceprivilege_escalationtrojanworm

    • 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

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

      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

    • Impair Defenses: Safe Mode Boot

      defense_evasion

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Checks whether UAC is enabled

      defense_evasiontrojan

    • Hijack Execution Flow: Executable Installer File Permissions Weakness

      Possible Turn off User Account Control's privilege elevation for standard users.

      defense_evasionpersistenceprivilege_escalation

    • 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

4
T1547

Active Setup

1
T1547.014

Registry Run Keys / Startup Folder

2
T1547.001

Winlogon Helper DLL

1
T1547.004

Hijack Execution Flow

1
T1574

Executable Installer File Permissions Weakness

1
T1574.005

Privilege Escalation

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Boot or Logon Autostart Execution

4
T1547

Active Setup

1
T1547.014

Registry Run Keys / Startup Folder

2
T1547.001

Winlogon Helper DLL

1
T1547.004

Hijack Execution Flow

1
T1574

Executable Installer File Permissions Weakness

1
T1574.005

Defense Evasion

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Hijack Execution Flow

1
T1574

Executable Installer File Permissions Weakness

1
T1574.005

Impair Defenses

2
T1562

Disable or Modify Tools

1
T1562.001

Safe Mode Boot

1
T1562.009

Modify Registry

6
T1112

Credential Access

Discovery

Query Registry

2
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