Overview

overview

10

Static

static

3

JaffaCakes...c9.exe

windows7-x64

10

JaffaCakes...c9.exe

windows10-2004-x64

10

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General

  • Target

    JaffaCakes118_8ffa0d45d09347276beea00bea0457c9

  • Size

    644KB

  • Sample

    250329-wnazmawrw8

  • MD5

    8ffa0d45d09347276beea00bea0457c9

  • SHA1

    ed4dbc24083034aeb1e45c6e29f815f819d882d0

  • SHA256

    24ec6c4ca5205bad2e59f36bc875928bc2ef33aeb6fbc6c9f9b3a54f843dce6e

  • SHA512

    7fc0beef115ca984adad9f13e4476195908469cff043ed5b481fff59b881e8d4f102dd337981803bb6252dac3d763ada0049e9225d3d58a07d72ecb92f9c6877

  • SSDEEP

    12288:j6onxOp8FySpE5zvIdtU+YmefT9/mqOplf2AQNWxgqFjj:Zwp8DozAdO98fplf2MJ

Score
10/10
pykspadefense_evasiondiscoverypersistenceprivilege_escalationtrojanworm

Malware Config

Targets

    • Target

      JaffaCakes118_8ffa0d45d09347276beea00bea0457c9

    • Size

      644KB

    • MD5

      8ffa0d45d09347276beea00bea0457c9

    • SHA1

      ed4dbc24083034aeb1e45c6e29f815f819d882d0

    • SHA256

      24ec6c4ca5205bad2e59f36bc875928bc2ef33aeb6fbc6c9f9b3a54f843dce6e

    • SHA512

      7fc0beef115ca984adad9f13e4476195908469cff043ed5b481fff59b881e8d4f102dd337981803bb6252dac3d763ada0049e9225d3d58a07d72ecb92f9c6877

    • SSDEEP

      12288:j6onxOp8FySpE5zvIdtU+YmefT9/mqOplf2AQNWxgqFjj:Zwp8DozAdO98fplf2MJ

    Score
    10/10
    pykspawormdefense_evasiondiscoverypersistenceprivilege_escalationtrojan

    • 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

    • Blocklisted process makes network request

    • 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

    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