Overview

overview

10

Static

static

3

assasin terror.exe

windows7-x64

10

assasin terror.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    JaffaCakes118_8f5864ea1a5fdaab0f9affd80a8ea064

  • Size

    2.3MB

  • Sample

    250329-wfx47aszft

  • MD5

    8f5864ea1a5fdaab0f9affd80a8ea064

  • SHA1

    098ae90fd2d786d8c9a33109ed2963b0495a34e9

  • SHA256

    ecb1fe140bd7915b694e41679e055200c280301c08a8ba33bca7ba5d5c34d21b

  • SHA512

    2f4af6aa52c36592978d09f7d0e95747e9a438379929d665e5bbcd92bd27087ca2e5f2f5e7242af98460f11452f28903abb6e970574b7fa208be8f5b475e3371

  • SSDEEP

    49152:ZYw1afW0l9hPFs8pVyKRdOd2RRHG+CKht+iz5fRrU4tVX:Z8VlHFs8njR8U/CKhssRhtp

Score
10/10
pykspadefense_evasiondiscoverypersistenceprivilege_escalationtrojanworm

Malware Config

Targets

    • Target

      assasin terror.pif

    • Size

      456KB

    • MD5

      b46ee2dfaa9ff0d313f2961dfed817de

    • SHA1

      f0cc165c55eb0cefc228ef74546f2af7bf046dd5

    • SHA256

      a10701e1ca478e967fe767382a33025aef1183259e0d1aff990f5f9b34335fb6

    • SHA512

      8fe28ea982f48e9d79a0c06b9c17ad0a350c594115bc88a65456feae50b261e196bd886d703e7b4cada1588b205d93492502c3632bba898bb5e2909f5ecfc829

    • SSDEEP

      12288:HpUJ3r6YkVwJgNnSykgb9cqWnw4q6ZmFhqse:HpUNr6YkVRFkgbeqeo68Fhq/

    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

    • 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

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