e08e6780ab0ddc15fe29497d01931eef3d16bc304982a34e923267810396a9ce

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240729-en
resource tags

arch:x64arch:x86image:win10v2004-20240729-enlocale:en-usos:windows10-2004-x64system
submitted
27-07-2024 03:54

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General

Target

76f4f709a5404fa5990635b4d823ac38_JaffaCakes118.exe
Size

342KB
MD5

76f4f709a5404fa5990635b4d823ac38
SHA1

12b78b2455a0fa04f13658a2b1d23304a7f19a43
SHA256

e08e6780ab0ddc15fe29497d01931eef3d16bc304982a34e923267810396a9ce
SHA512

23068375bf12e8269cf522299a2d777bf965ef5444d8bb0d92961cf2c8a862dd327dce28b89b3bcb4833d58f8262d2beb2e597c9c0232822dffc67b8be99ff00
SSDEEP

6144:WRqmpp+amNOGokzLyM9tsLAitQo6tzOKkzIt8gKyfjxfR9D2j4ykpGAen:mqmpplpGoGL3etQoMiXM8gxf/Sj4ykod

Score

10^/10

aspackv2 discovery persistence upx

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe C:\\Windows\\system32\\fservice.exe"	76f4f709a5404fa5990635b4d823ac38_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe C:\\Windows\\system32\\fservice.exe"	services.exe

Adds policy Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	services.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\DirectX For Microsoft® Windows = "C:\\Windows\\system32\\fservice.exe"	services.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	76f4f709a5404fa5990635b4d823ac38_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\DirectX For Microsoft® Windows = "C:\\Windows\\system32\\fservice.exe"	76f4f709a5404fa5990635b4d823ac38_JaffaCakes118.exe

Boot or Logon Autostart Execution: Active Setup 2 TTPs 5 IoCs

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

persistence

Active Setup

T1547.014

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}	76f4f709a5404fa5990635b4d823ac38_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\	76f4f709a5404fa5990635b4d823ac38_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\StubPath = "C:\\Windows\\system\\sservice.exe"	76f4f709a5404fa5990635b4d823ac38_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\	services.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\StubPath = "C:\\Windows\\system\\sservice.exe"	services.exe

ASPack v2.12-2.42 1 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral2/files/0x0009000000023631-22.dat	aspack_v212_v242

Executes dropped EXE 2 IoCs

pid	Process
4660	fservice.exe
4664	services.exe

Loads dropped DLL 5 IoCs

pid	Process
4664	services.exe
4664	services.exe
4664	services.exe
4660	fservice.exe
3180	76f4f709a5404fa5990635b4d823ac38_JaffaCakes118.exe

UPX packed file 21 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/3180-0-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/files/0x00090000000235ce-6.dat	upx
behavioral2/memory/4660-8-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/4664-19-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/4660-35-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/3180-39-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/4664-41-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/4664-43-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/4664-44-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/4664-47-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/4664-49-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/4664-51-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/4664-53-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/4664-55-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/4664-57-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/4664-59-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/4664-61-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/4664-63-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/4664-65-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/4664-67-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/4664-69-0x0000000000400000-0x00000000005FC000-memory.dmp	upx

Modifies WinLogon 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\	76f4f709a5404fa5990635b4d823ac38_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\	services.exe

Drops file in System32 directory 7 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\fservice.exe	76f4f709a5404fa5990635b4d823ac38_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\fservice.exe	76f4f709a5404fa5990635b4d823ac38_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\fservice.exe	fservice.exe
File opened for modification	C:\Windows\SysWOW64\fservice.exe	fservice.exe
File created	C:\Windows\SysWOW64\winkey.dll	services.exe
File created	C:\Windows\SysWOW64\reginv.dll	services.exe
File created	C:\Windows\SysWOW64\fservice.exe	services.exe

Drops file in Windows directory 7 IoCs

description	ioc	Process
File created	C:\Windows\system\sservice.exe	76f4f709a5404fa5990635b4d823ac38_JaffaCakes118.exe
File opened for modification	C:\Windows\system\sservice.exe	76f4f709a5404fa5990635b4d823ac38_JaffaCakes118.exe
File created	C:\Windows\services.exe	fservice.exe
File opened for modification	C:\Windows\services.exe	fservice.exe
File created	C:\Windows\system\sservice.exe	fservice.exe
File opened for modification	C:\Windows\system\sservice.exe	fservice.exe
File created	C:\Windows\system\sservice.exe	services.exe

System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

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

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NET.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NET.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	76f4f709a5404fa5990635b4d823ac38_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fservice.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	services.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe
4664	services.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4664	services.exe
4664	services.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 3180 wrote to memory of 4660	3180	76f4f709a5404fa5990635b4d823ac38_JaffaCakes118.exe	83
PID 3180 wrote to memory of 4660	3180	76f4f709a5404fa5990635b4d823ac38_JaffaCakes118.exe	83
PID 3180 wrote to memory of 4660	3180	76f4f709a5404fa5990635b4d823ac38_JaffaCakes118.exe	83
PID 4660 wrote to memory of 4664	4660	fservice.exe	85
PID 4660 wrote to memory of 4664	4660	fservice.exe	85
PID 4660 wrote to memory of 4664	4660	fservice.exe	85
PID 4664 wrote to memory of 916	4664	services.exe	86
PID 4664 wrote to memory of 916	4664	services.exe	86
PID 4664 wrote to memory of 916	4664	services.exe	86
PID 4664 wrote to memory of 1392	4664	services.exe	87
PID 4664 wrote to memory of 1392	4664	services.exe	87
PID 4664 wrote to memory of 1392	4664	services.exe	87
PID 1392 wrote to memory of 1852	1392	NET.exe	90
PID 1392 wrote to memory of 1852	1392	NET.exe	90
PID 1392 wrote to memory of 1852	1392	NET.exe	90
PID 916 wrote to memory of 2080	916	NET.exe	91
PID 916 wrote to memory of 2080	916	NET.exe	91
PID 916 wrote to memory of 2080	916	NET.exe	91
PID 3180 wrote to memory of 2272	3180	76f4f709a5404fa5990635b4d823ac38_JaffaCakes118.exe	92
PID 3180 wrote to memory of 2272	3180	76f4f709a5404fa5990635b4d823ac38_JaffaCakes118.exe	92
PID 3180 wrote to memory of 2272	3180	76f4f709a5404fa5990635b4d823ac38_JaffaCakes118.exe	92

C:\Users\Admin\AppData\Local\Temp\76f4f709a5404fa5990635b4d823ac38_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\76f4f709a5404fa5990635b4d823ac38_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Adds policy Run key to start application
- Boot or Logon Autostart Execution: Active Setup
- Loads dropped DLL
- Modifies WinLogon
- Drops file in System32 directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3180
- C:\Windows\SysWOW64\fservice.exe
  C:\Windows\system32\fservice.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in System32 directory
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4660
- - C:\Windows\services.exe
    C:\Windows\services.exe -XP
    3⤵
    - Modifies WinLogon for persistence
    - Adds policy Run key to start application
    - Boot or Logon Autostart Execution: Active Setup
    - Executes dropped EXE
    - Loads dropped DLL
    - Modifies WinLogon
    - Drops file in System32 directory
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4664
  - - C:\Windows\SysWOW64\NET.exe
      NET STOP srservice
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:916
    - - C:\Windows\SysWOW64\net1.exe
        
        C:\Windows\system32\net1 STOP srservice
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:2080
  - - C:\Windows\SysWOW64\NET.exe
      NET STOP navapsvc
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:1392
    - - C:\Windows\SysWOW64\net1.exe
        
        C:\Windows\system32\net1 STOP navapsvc
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:1852
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\76f4f709a5404fa5990635b4d823ac38_JaffaCakes118.exe.bat
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2272

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Active Setup

T1547.014

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Active Setup

T1547.014

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\76f4f709a5404fa5990635b4d823ac38_JaffaCakes118.exe.bat

Filesize
133B

MD5
5e46c59ea0fada35b786ca1a698f26ee

SHA1
56be2ae1e01fa3127bcbf5ef4e7ac0e019f70cac

SHA256
f5c03b831b1a9dc44b1fcef969ca657995cb86bc68dfa94c38a7e494af02fcac

SHA512
ddcef45bbc25b184ad1344c2dbb53a9bf278b85a347d6b885cf6a5fbc932e91c04ea5b752ecfd084fef73ddb808771c81538dde26eb784b98256c22b9ed40760

Download Submit
C:\Windows\SysWOW64\fservice.exe

Filesize
342KB

MD5
76f4f709a5404fa5990635b4d823ac38

SHA1
12b78b2455a0fa04f13658a2b1d23304a7f19a43

SHA256
e08e6780ab0ddc15fe29497d01931eef3d16bc304982a34e923267810396a9ce

SHA512
23068375bf12e8269cf522299a2d777bf965ef5444d8bb0d92961cf2c8a862dd327dce28b89b3bcb4833d58f8262d2beb2e597c9c0232822dffc67b8be99ff00

Download Submit
C:\Windows\SysWOW64\reginv.dll

Filesize
36KB

MD5
562e0d01d6571fa2251a1e9f54c6cc69

SHA1
83677ad3bc630aa6327253c7b3deffbd4a8ce905

SHA256
c5b1d800c86d550c0b68c57c0d9911c1dd21df9e5e37e9e7bc032b5e66fdebe6

SHA512
166e132432eca24061f7e7d0c58c0b286e971ae2bc50f7c890b7707dd5dede19fcd83a5f79b6fd3f93dd691e07ad9bc1bd05fe82ccaade1610282188571585ea

Download Submit
C:\Windows\SysWOW64\winkey.dll

Filesize
13KB

MD5
b4c72da9fd1a0dcb0698b7da97daa0cd

SHA1
b25a79e8ea4c723c58caab83aed6ea48de7ed759

SHA256
45d266269634ba2de70f179a26d7224111e677e66b38dff2802851b71ce4458f

SHA512
f5f184416c5381d275bc093c9275e9fdb35c58e2c401d188aef097950013de6e43269da5d4dd5e7baea34735bd7de664d15fe487b2292fd66926c9845b0cd066

Download Submit
memory/3180-1-0x0000000000C10000-0x0000000000C11000-memory.dmp

Filesize
4KB

Download
memory/3180-0-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/3180-39-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/4660-35-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/4660-8-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/4660-10-0x00000000008C0000-0x00000000008C1000-memory.dmp

Filesize
4KB

Download
memory/4664-41-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/4664-49-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/4664-20-0x0000000002760000-0x0000000002761000-memory.dmp

Filesize
4KB

Download
memory/4664-42-0x0000000010000000-0x000000001000B000-memory.dmp

Filesize
44KB

Download
memory/4664-19-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/4664-43-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/4664-46-0x0000000002760000-0x0000000002761000-memory.dmp

Filesize
4KB

Download
memory/4664-44-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/4664-47-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/4664-24-0x0000000010000000-0x000000001000B000-memory.dmp

Filesize
44KB

Download
memory/4664-51-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/4664-53-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/4664-55-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/4664-57-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/4664-59-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/4664-61-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/4664-63-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/4664-65-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/4664-67-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/4664-69-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download