Overview

overview

10

Static

static

3

JaffaCakes...de.exe

windows7-x64

10

JaffaCakes...de.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    JaffaCakes118_962dc67fe9d8c2f06aa18586ce6be0de

  • Size

    968KB

  • Sample

    250329-ylfhfawyhs

  • MD5

    962dc67fe9d8c2f06aa18586ce6be0de

  • SHA1

    990418410db8507f25d40b2899fddfcc80c01721

  • SHA256

    84372360b237f339d6a7e424e8b559baa05ef9a2b118c9f5527569ee8fb45dd1

  • SHA512

    a32678d66e5707831bf1dc9ac8d7f6f6ad8057c2130c48798e89111f1dac5f89a9a07880abb23766470084095fc1c77e7b83e0e4b1070a12dd87c69d7ce674b9

  • SSDEEP

    12288:S2pUJ3r6YkVwJgNnSykgb9cqWnw4q6ZmFhqss:9pUNr6YkVRFkgbeqeo68Fhq

Score
10/10
pykspadefense_evasiondiscoverypersistenceprivilege_escalationtrojanworm

Malware Config

Targets

    • Target

      JaffaCakes118_962dc67fe9d8c2f06aa18586ce6be0de

    • Size

      968KB

    • MD5

      962dc67fe9d8c2f06aa18586ce6be0de

    • SHA1

      990418410db8507f25d40b2899fddfcc80c01721

    • SHA256

      84372360b237f339d6a7e424e8b559baa05ef9a2b118c9f5527569ee8fb45dd1

    • SHA512

      a32678d66e5707831bf1dc9ac8d7f6f6ad8057c2130c48798e89111f1dac5f89a9a07880abb23766470084095fc1c77e7b83e0e4b1070a12dd87c69d7ce674b9

    • SSDEEP

      12288:S2pUJ3r6YkVwJgNnSykgb9cqWnw4q6ZmFhqss:9pUNr6YkVRFkgbeqeo68Fhq

    Score
    10/10
    pykspadefense_evasiondiscoverypersistencetrojanwormprivilege_escalation

    • 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

    • 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

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