Overview

overview

10

Static

static

3

JaffaCakes...10.exe

windows7-x64

10

JaffaCakes...10.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    22s
  • max time network
    38s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    29/03/2025, 17:36

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General

  • Target

    JaffaCakes118_8e0cc35a04712658755155d432aabb10.exe

  • Size

    572KB

  • MD5

    8e0cc35a04712658755155d432aabb10

  • SHA1

    e1a4223e46efab110bdce0c7ff7e7fd1839a2584

  • SHA256

    1364c5f9a11996c761040823e43e41547f52147aafd7fc4bf910d98a4c30eacb

  • SHA512

    715d0d2d1fad9171567d2b4a0f2efcfa6259c065d99272a3384e4f04aa8955ccc228b6d10de12a0e0205435b691eb35c8799541d97cd603e07e3f03f190637d6

  • SSDEEP

    6144:88XXRUw9Oz5+iUU03pej1YpTYzOb0kLXhlJFTaLTGu0yvHcr+JB8aU:PnRy+ZyYpaCDJFuPyAHcqrU

Score
10/10
pykspadefense_evasiondiscoverypersistenceprivilege_escalationtrojanworm

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 4 IoCs
    persistence
  • Pykspa

    Pykspa is a worm spreads via Skype uses DGA and it's written in C++.

    wormpykspa
  • Pykspa family
    pykspa
  • UAC bypass 3 TTPs 13 IoCs
    defense_evasiontrojan
  • Detect Pykspa worm 2 IoCs
    worm
  • Adds policy Run key to start application 2 TTPs 16 IoCs
    persistence
  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

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

    persistence
  • Disables RegEdit via registry modification 6 IoCs
    defense_evasion
  • Executes dropped EXE 7 IoCs
  • Impair Defenses: Safe Mode Boot 1 TTPs 3 IoCs
    defense_evasion
  • Loads dropped DLL 10 IoCs
  • Adds Run key to start application 2 TTPs 45 IoCs
    persistence
  • Checks whether UAC is enabled 1 TTPs 8 IoCs
    defense_evasiontrojan
  • Hijack Execution Flow: Executable Installer File Permissions Weakness 1 TTPs 3 IoCs

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

    defense_evasionpersistenceprivilege_escalation
  • Looks up external IP address via web service 4 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in System32 directory 60 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 40 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Modifies registry class 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 33 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 13 IoCs
  • Suspicious use of FindShellTrayWindow 24 IoCs
  • Suspicious use of SendNotifyMessage 20 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs
  • System policy modification 1 TTPs 38 IoCs
    defense_evasion
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8e0cc35a04712658755155d432aabb10.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8e0cc35a04712658755155d432aabb10.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1936
    • C:\Users\Admin\AppData\Local\Temp\fpbadygypzl.exe
      "C:\Users\Admin\AppData\Local\Temp\fpbadygypzl.exe" "c:\users\admin\appdata\local\temp\jaffacakes118_8e0cc35a04712658755155d432aabb10.exe*"
      2⤵
      • Modifies WinLogon for persistence
      • UAC bypass
      • Adds policy Run key to start application
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Loads dropped DLL
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Hijack Execution Flow: Executable Installer File Permissions Weakness
      • Drops file in System32 directory
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:2004
      • C:\Users\Admin\AppData\Local\Temp\vfmsp.exe
        "C:\Users\Admin\AppData\Local\Temp\vfmsp.exe" "-c:\users\admin\appdata\local\temp\jaffacakes118_8e0cc35a04712658755155d432aabb10.exe"
        3⤵
        • Modifies WinLogon for persistence
        • UAC bypass
        • Adds policy Run key to start application
        • Disables RegEdit via registry modification
        • Executes dropped EXE
        • Impair Defenses: Safe Mode Boot
        • Adds Run key to start application
        • Checks whether UAC is enabled
        • Hijack Execution Flow: Executable Installer File Permissions Weakness
        • Drops file in System32 directory
        • Drops file in Program Files directory
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • System policy modification
        PID:2772
      • C:\Users\Admin\AppData\Local\Temp\vfmsp.exe
        "C:\Users\Admin\AppData\Local\Temp\vfmsp.exe" "-c:\users\admin\appdata\local\temp\jaffacakes118_8e0cc35a04712658755155d432aabb10.exe"
        3⤵
        • Modifies WinLogon for persistence
        • UAC bypass
        • Adds policy Run key to start application
        • Disables RegEdit via registry modification
        • Executes dropped EXE
        • Adds Run key to start application
        • Checks whether UAC is enabled
        • Hijack Execution Flow: Executable Installer File Permissions Weakness
        • Drops file in System32 directory
        • Drops file in Windows directory
        • System policy modification
        PID:2640
  • C:\Windows\explorer.exe
    explorer.exe
    1⤵
    • Boot or Logon Autostart Execution: Active Setup
    • Modifies registry class
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:316
    • C:\Windows\ifzscwnfbqypioyapo.exe
      "C:\Windows\ifzscwnfbqypioyapo.exe" .
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:108
      • C:\Users\Admin\AppData\Local\Temp\fpbadygypzl.exe
        "C:\Users\Admin\AppData\Local\Temp\fpbadygypzl.exe" "c:\windows\ifzscwnfbqypioyapo.exe*."
        3⤵
        • Modifies WinLogon for persistence
        • UAC bypass
        • Adds policy Run key to start application
        • Executes dropped EXE
        • Adds Run key to start application
        • Checks whether UAC is enabled
        • Drops file in System32 directory
        • Drops file in Windows directory
        • System policy modification
        PID:2592
    • C:\Users\Admin\AppData\Local\Temp\trmgrmexuktlfmxaqqx.exe
      "C:\Users\Admin\AppData\Local\Temp\trmgrmexuktlfmxaqqx.exe" .
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1688
      • C:\Users\Admin\AppData\Local\Temp\fpbadygypzl.exe
        "C:\Users\Admin\AppData\Local\Temp\fpbadygypzl.exe" "c:\users\admin\appdata\local\temp\trmgrmexuktlfmxaqqx.exe*."
        3⤵
        • Executes dropped EXE
        PID:976

Network

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

1
T1012

System Information Discovery

2
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\ndqcfscncklvhgjemedtgsvisdsablxwz.cut
    Filesize

    3KB

    MD5

    cfbb8871e2ba752501e8fdc7181feda7

    SHA1

    4ea976459644f2dbf90ef951c4e625956cd541e7

    SHA256

    633c09fef32c82f98af3d1ec9e46df30d30d2579ea4dbe7e4f8076af9f43db17

    SHA512

    44ec15183a2e7bd99a297a8aed115ed6c577233ce9b05ed231512be8a01f9d5ca5bf2a1e4f8c5db284a6f0411bb060928ccfe4daaa55054187195ffdf2380751

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  • C:\Users\Admin\AppData\Local\wbdewyxxbyonocuebiwbde.yxx
    Filesize

    120B

    MD5

    5d72440651a87023aa94397dfe5259d8

    SHA1

    2ff3aafe243a1c0f2e5722be43929ef1abcfb51b

    SHA256

    8184bb0876be184340fd4322999573b5555e364e1be520bbc560260d2b829bde

    SHA512

    0d61855c4be00dd35072d2da37f1baa7b9b5dbca7ce9018e486cb791bbdd4669a7872a4c420f112ae7e96798f645a37985d6c5676905c85c2e1c889bcbdf3ca4

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  • C:\Windows\SysWOW64\ifzscwnfbqypioyapo.exe
    Filesize

    572KB

    MD5

    8e0cc35a04712658755155d432aabb10

    SHA1

    e1a4223e46efab110bdce0c7ff7e7fd1839a2584

    SHA256

    1364c5f9a11996c761040823e43e41547f52147aafd7fc4bf910d98a4c30eacb

    SHA512

    715d0d2d1fad9171567d2b4a0f2efcfa6259c065d99272a3384e4f04aa8955ccc228b6d10de12a0e0205435b691eb35c8799541d97cd603e07e3f03f190637d6

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  • \Users\Admin\AppData\Local\Temp\fpbadygypzl.exe
    Filesize

    308KB

    MD5

    85cb856b920e7b0b7b75115336fc2af2

    SHA1

    1d1a207efec2f5187583b652c35aef74ee4c473f

    SHA256

    6fff20aabe8265b6e811c9dbcb987f9c15cf07d1d8b80ced7b287d96900f5c62

    SHA512

    120ff9c77c19216e5691b6ba812f09f7db7b46685a391027fff56e5b73200f4211b6bac2c2d28cdfe461d1fbf10f1a3204adeedbd0a34a034a862c6278d901e8

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  • \Users\Admin\AppData\Local\Temp\vfmsp.exe
    Filesize

    664KB

    MD5

    fa13aaf12552ac132cee3525728fd68d

    SHA1

    995714ef4e16d5bc5d16c955d89f75506d592aab

    SHA256

    d41f9f420ac106c4c05c582326afc7a34c80e31d8267349a0427b7c94666b176

    SHA512

    af492a79dcc7b511629c06c00eec5f99c49e5c0335c3e53e36c92feecaccd7ebbe6473d60bdabb7c83154682083f1c32d43ab95bdbe5de736ff2c803d36194c6

    Download Submit