Overview

overview

10

Static

static

3

JaffaCakes...74.exe

windows7-x64

10

JaffaCakes...74.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    50s
  • max time network
    51s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    29/03/2025, 17:09

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General

  • Target

    JaffaCakes118_8c0afd40d1eaf4dbd91bacaf28849074.exe

  • Size

    644KB

  • MD5

    8c0afd40d1eaf4dbd91bacaf28849074

  • SHA1

    2f40d165f1d3961237197f7e454b5fb52c74fad4

  • SHA256

    16c93fc1a426856cff62d7a99f8ae5e41442222861a72ca0ede3ecbaf54642e8

  • SHA512

    e0e54076624aa6f318401d6673f2cdba1aa1134bfe7d3bbcc557dc2aca9113189dcee4e06cbc99bec05cbebc3a5bf151f32904d737a2ef9335e35f69872b4097

  • SSDEEP

    12288:Q6onxOp8FySpE5zvIdtU+YmefT9/mqOplf2AQNWxgqFjj:Ewp8DozAdO98fplf2MJ

Score
10/10
pykspadefense_evasiondiscoverypersistenceprivilege_escalationtrojanworm

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 6 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 15 IoCs
    defense_evasiontrojan
  • Detect Pykspa worm 2 IoCs
    worm
  • Adds policy Run key to start application 2 TTPs 28 IoCs
    persistence
  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 3 IoCs

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

    persistence
  • Disables RegEdit via registry modification 9 IoCs
    defense_evasion
  • Executes dropped EXE 15 IoCs
  • Impair Defenses: Safe Mode Boot 1 TTPs 3 IoCs
    defense_evasion
  • Loads dropped DLL 18 IoCs
  • Adds Run key to start application 2 TTPs 64 IoCs
    persistence
  • Checks whether UAC is enabled 1 TTPs 12 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 3 IoCs

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

  • Drops autorun.inf file 1 TTPs 4 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Drops file in System32 directory 46 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 46 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 9 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 15 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 37 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 51 IoCs
  • Suspicious use of WriteProcessMemory 60 IoCs
  • System policy modification 1 TTPs 42 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_8c0afd40d1eaf4dbd91bacaf28849074.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8c0afd40d1eaf4dbd91bacaf28849074.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1752
    • C:\Users\Admin\AppData\Local\Temp\xaxybxpphkh.exe
      "C:\Users\Admin\AppData\Local\Temp\xaxybxpphkh.exe" "c:\users\admin\appdata\local\temp\jaffacakes118_8c0afd40d1eaf4dbd91bacaf28849074.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:2492
      • C:\Users\Admin\AppData\Local\Temp\zghlt.exe
        "C:\Users\Admin\AppData\Local\Temp\zghlt.exe" "-c:\users\admin\appdata\local\temp\jaffacakes118_8c0afd40d1eaf4dbd91bacaf28849074.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 autorun.inf file
        • 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:2224
      • C:\Users\Admin\AppData\Local\Temp\zghlt.exe
        "C:\Users\Admin\AppData\Local\Temp\zghlt.exe" "-c:\users\admin\appdata\local\temp\jaffacakes118_8c0afd40d1eaf4dbd91bacaf28849074.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:2324
  • 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:964
    • C:\Windows\xshzvlictjlwbkvzzhb.exe
      "C:\Windows\xshzvlictjlwbkvzzhb.exe" .
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:912
      • C:\Users\Admin\AppData\Local\Temp\xaxybxpphkh.exe
        "C:\Users\Admin\AppData\Local\Temp\xaxybxpphkh.exe" "c:\windows\xshzvlictjlwbkvzzhb.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
        • Drops file in System32 directory
        • Drops file in Windows directory
        • System policy modification
        PID:572
    • C:\Users\Admin\AppData\Local\Temp\zwnhfxwsldhubmzfhrnkb.exe
      "C:\Users\Admin\AppData\Local\Temp\zwnhfxwsldhubmzfhrnkb.exe" .
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:852
      • C:\Users\Admin\AppData\Local\Temp\xaxybxpphkh.exe
        "C:\Users\Admin\AppData\Local\Temp\xaxybxpphkh.exe" "c:\users\admin\appdata\local\temp\zwnhfxwsldhubmzfhrnkb.exe*."
        3⤵
        • Executes dropped EXE
        PID:1708
  • 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:3064
    • C:\Windows\zwnhfxwsldhubmzfhrnkb.exe
      "C:\Windows\zwnhfxwsldhubmzfhrnkb.exe" .
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2836
      • C:\Users\Admin\AppData\Local\Temp\xaxybxpphkh.exe
        "C:\Users\Admin\AppData\Local\Temp\xaxybxpphkh.exe" "c:\windows\zwnhfxwsldhubmzfhrnkb.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
        • Drops file in System32 directory
        • Drops file in Windows directory
        • System policy modification
        PID:2684
    • C:\Users\Admin\AppData\Local\Temp\dwjzthcujxxgjqzbz.exe
      "C:\Users\Admin\AppData\Local\Temp\dwjzthcujxxgjqzbz.exe" .
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2860
      • C:\Users\Admin\AppData\Local\Temp\xaxybxpphkh.exe
        "C:\Users\Admin\AppData\Local\Temp\xaxybxpphkh.exe" "c:\users\admin\appdata\local\temp\dwjzthcujxxgjqzbz.exe*."
        3⤵
        • Executes dropped EXE
        PID:2288
  • 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:2736
    • C:\Windows\dwjzthcujxxgjqzbz.exe
      "C:\Windows\dwjzthcujxxgjqzbz.exe" .
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1008
      • C:\Users\Admin\AppData\Local\Temp\xaxybxpphkh.exe
        "C:\Users\Admin\AppData\Local\Temp\xaxybxpphkh.exe" "c:\windows\dwjzthcujxxgjqzbz.exe*."
        3⤵
        • Executes dropped EXE
        PID:1468
    • C:\Users\Admin\AppData\Local\Temp\dwjzthcujxxgjqzbz.exe
      "C:\Users\Admin\AppData\Local\Temp\dwjzthcujxxgjqzbz.exe" .
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1200
      • C:\Users\Admin\AppData\Local\Temp\xaxybxpphkh.exe
        "C:\Users\Admin\AppData\Local\Temp\xaxybxpphkh.exe" "c:\users\admin\appdata\local\temp\dwjzthcujxxgjqzbz.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
        • Drops file in System32 directory
        • Drops file in Windows directory
        • System policy modification
        PID:2544

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Replication Through Removable Media

1
T1091

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

Replication Through Removable Media

1
T1091

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

  • C:\Program Files (x86)\eighmlruuteymeylulosqrwv.eed
    Filesize

    272B

    MD5

    115baf37081e164c6a21b7146d3844c8

    SHA1

    e57afb1528258c4e9bc9fabafd0de0f9b25aab7b

    SHA256

    016df868fa137db533831deb87dbb396fa368e76dd90da7211fb2ba898a94e02

    SHA512

    8149070f23c0a8d5db8251538e93b05568839b5fe35671c4381041fc975cef71e1a98b4463c2c4780af222081a8f2ca7b3341d3666f03cb3b163a546a384a264

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  • C:\Users\Admin\AppData\Local\eighmlruuteymeylulosqrwv.eed
    Filesize

    272B

    MD5

    0ee1be87baeecb4ea5caf4383adc2a15

    SHA1

    25d0fc9fcc0f4553dcf7a3af0a5da7fbcaf5f579

    SHA256

    c29f42742e7f1c9c9d787d7be2a4c56ffc35530c9a499a4cfe64551a374008a6

    SHA512

    bb4d31c328100d9e654e9b363d338892e5688898db0e1563299d704d1cd3672970437bf645eea72cc81fa5ebcd242e04368ed5aa674272f91c7b395d07d71869

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  • C:\Users\Admin\AppData\Local\eighmlruuteymeylulosqrwv.eed
    Filesize

    272B

    MD5

    584a71d7bcae85cc09f5cfcbfd78f717

    SHA1

    faea3741c72615d86f9abb86de0bd766d6bdcc29

    SHA256

    65a69a499dd98ee47bbad21cdafc12f18bff11c4c990219992410ea4d52e0c57

    SHA512

    c41fe89f130d39c075fd6af6485e98618723334834bc587f7aa260bb225d723fe0eec6b65e18a0798fd35390e728eeff9bfe1503241660a7f691a301a243315a

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  • C:\Users\Admin\AppData\Local\nclxnxocnxtyxafdxznclxnxocnxtyxafdx.ncl
    Filesize

    3KB

    MD5

    859d2a8f7babae5a4105d8b2cd9ed76c

    SHA1

    78486fc47954bc90600a952a3fb97b073da2a293

    SHA256

    7c7b8b5beb1578710eabfc1537ac81e439a8702c4e8a97018f905b93e98f9be3

    SHA512

    3691c364ef271b56952ff8d2045cb7d33000e08c2c6d93123e4695b4cd697f43157066d03e1f037b0de0e1c31579e7fdd1a9f39e5a05b0aed825440ec32ef7b3

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

    644KB

    MD5

    8c0afd40d1eaf4dbd91bacaf28849074

    SHA1

    2f40d165f1d3961237197f7e454b5fb52c74fad4

    SHA256

    16c93fc1a426856cff62d7a99f8ae5e41442222861a72ca0ede3ecbaf54642e8

    SHA512

    e0e54076624aa6f318401d6673f2cdba1aa1134bfe7d3bbcc557dc2aca9113189dcee4e06cbc99bec05cbebc3a5bf151f32904d737a2ef9335e35f69872b4097

    Download Submit

  • C:\mwahsxjs.bat
    Filesize

    656KB

    MD5

    ee4bd091971db0b2fbeb4ff61565e2e1

    SHA1

    4a85ecd725fcadfd3d4a713ea04dc46b57607689

    SHA256

    e7615efe065ae17ccec55ecb9bf30682a74523c763f09981087fc74fe9777e19

    SHA512

    81366dbf77d32fd0b69062c47aef224b93351c7f87a96330383f76b35164739703205452b9104714fac36b78ac2d4103ddc729e4a5e0868e599be4bb77c0406a

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

    320KB

    MD5

    5203b6ea0901877fbf2d8d6f6d8d338e

    SHA1

    c803e92561921b38abe13239c1fd85605b570936

    SHA256

    0cc02d34d5fd4cf892fed282f98c1ad3e7dd6159a8877ae5c46d3f834ed36060

    SHA512

    d48a41b4fc4c38a6473f789c02918fb7353a4b4199768a3624f3b685d91d38519887a1ccd3616e0d2b079a346afaec5a0f2ef2c46d72d3097ef561cedb476471

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

    704KB

    MD5

    3f9d790bf2d317c711f7a1c95c5c32e4

    SHA1

    f5deaa7f46d1695c8d817bf1743d06e074df6a17

    SHA256

    4884bbe74aa78083baa081b965ec2f59c51dbf2be5dd9ad430fb398f3c6e594d

    SHA512

    f3dd7ed785efa2c7e9534224e45a3e013be25c12a3cc80ee0928d6ecd8dab38c6c32bcdc66a0b7132cd0ed07dba3ec6e9cbe2858671de133d95763db79a3294d

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  • memory/964-212-0x0000000004850000-0x0000000004851000-memory.dmp

    Filesize

    4KB

    Download

  • memory/3064-274-0x0000000004800000-0x0000000004801000-memory.dmp

    Filesize

    4KB

    Download