Overview

overview

10

Static

static

3

JaffaCakes...a1.exe

windows10-2004-x64

10

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General

  • Target

    JaffaCakes118_9a68e3a1b3fc00cfbfb50a560d36bba1

  • Size

    568KB

  • Sample

    250401-wp4y4atsh1

  • MD5

    9a68e3a1b3fc00cfbfb50a560d36bba1

  • SHA1

    3a5d4be2ff33a7b15944f8eb62bb99526d4b8d32

  • SHA256

    0563f7779b0d4e385c21ae96787043aabf73ebc37c9b88f13f7a415ba44633c9

  • SHA512

    1ecda13cc55ad0a5f1fe4185c4263332e577a6de389f4f21f756a097967f5f7e1752426b27e317cdceab5d8032f8fc96c36a0c93a9a5c0850159f28c6a9c6ef5

  • SSDEEP

    6144:lj6/wndfF/gl0LQIk8DR3dEuAI7pEfxsZozAm9TMdGQLUg1nYmefPImdrion4P1F:t6onxOp8FySpE5zvIdtU+Ymefu

Score
10/10
pykspadefense_evasiondiscoverypersistenceprivilege_escalationtrojanworm

Malware Config

Targets

    • Target

      JaffaCakes118_9a68e3a1b3fc00cfbfb50a560d36bba1

    • Size

      568KB

    • MD5

      9a68e3a1b3fc00cfbfb50a560d36bba1

    • SHA1

      3a5d4be2ff33a7b15944f8eb62bb99526d4b8d32

    • SHA256

      0563f7779b0d4e385c21ae96787043aabf73ebc37c9b88f13f7a415ba44633c9

    • SHA512

      1ecda13cc55ad0a5f1fe4185c4263332e577a6de389f4f21f756a097967f5f7e1752426b27e317cdceab5d8032f8fc96c36a0c93a9a5c0850159f28c6a9c6ef5

    • SSDEEP

      6144:lj6/wndfF/gl0LQIk8DR3dEuAI7pEfxsZozAm9TMdGQLUg1nYmefPImdrion4P1F:t6onxOp8FySpE5zvIdtU+Ymefu

    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

    • 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

    • 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

    behavioral1

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

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

3
T1547

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

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