7f95cd69aecb4f59a8845fe50d8e0fdd9d29694615b53f4a1eb780734445e144

Analysis

max time kernel
149s
max time network
105s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
20-08-2024 04:32

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General

Target

adde2fca5b96d6b0b3186ba7a98edcbb_JaffaCakes118.exe
Size

557KB
MD5

adde2fca5b96d6b0b3186ba7a98edcbb
SHA1

bf88dbd9dfbd5cd427cb7caeb0c11fae00db5cb5
SHA256

7f95cd69aecb4f59a8845fe50d8e0fdd9d29694615b53f4a1eb780734445e144
SHA512

e7c629231866d5867798ea49f9aac6a88667c5bef92be253623729101868c7ad5690f1bc143e9b11d804aa8a11ed25edee25e9796521eda34ef569ad64750b94
SSDEEP

6144:XRqmpp+amNOGokzLyM9tsLAitQo6tzOKkzIt8gKyfjxfR9D2j4yI:hqmpplpGoGL3etQoMiXM8gxf/Sj4yI

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"	adde2fca5b96d6b0b3186ba7a98edcbb_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
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	adde2fca5b96d6b0b3186ba7a98edcbb_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\DirectX For Microsoft® Windows = "C:\\Windows\\system32\\fservice.exe"	adde2fca5b96d6b0b3186ba7a98edcbb_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	services.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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\StubPath = "C:\\Windows\\system\\sservice.exe"	adde2fca5b96d6b0b3186ba7a98edcbb_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
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}	adde2fca5b96d6b0b3186ba7a98edcbb_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\	adde2fca5b96d6b0b3186ba7a98edcbb_JaffaCakes118.exe

ASPack v2.12-2.42 1 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral2/files/0x0008000000023437-21.dat	aspack_v212_v242

Executes dropped EXE 2 IoCs

pid	Process
1192	fservice.exe
1212	services.exe

Loads dropped DLL 5 IoCs

pid	Process
1212	services.exe
1212	services.exe
1212	services.exe
1192	fservice.exe
1740	adde2fca5b96d6b0b3186ba7a98edcbb_JaffaCakes118.exe

UPX packed file 21 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1740-0-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/files/0x0008000000023433-6.dat	upx
behavioral2/memory/1212-18-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/1192-34-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/1740-36-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/1740-39-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/1212-40-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/1212-42-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/1212-44-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/1212-46-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/1212-48-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/1212-50-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/1212-52-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/1212-54-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/1212-56-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/1212-58-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/1212-60-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/1212-62-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/1212-64-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/1212-66-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/1212-68-0x0000000000400000-0x00000000005FC000-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\	adde2fca5b96d6b0b3186ba7a98edcbb_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\winkey.dll	services.exe
File created	C:\Windows\SysWOW64\reginv.dll	services.exe
File created	C:\Windows\SysWOW64\fservice.exe	services.exe
File created	C:\Windows\SysWOW64\fservice.exe	adde2fca5b96d6b0b3186ba7a98edcbb_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\fservice.exe	adde2fca5b96d6b0b3186ba7a98edcbb_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\fservice.exe	fservice.exe
File opened for modification	C:\Windows\SysWOW64\fservice.exe	fservice.exe

Drops file in Windows directory 7 IoCs

description	ioc	Process
File created	C:\Windows\system\sservice.exe	adde2fca5b96d6b0b3186ba7a98edcbb_JaffaCakes118.exe
File opened for modification	C:\Windows\system\sservice.exe	adde2fca5b96d6b0b3186ba7a98edcbb_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 7 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	net1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	adde2fca5b96d6b0b3186ba7a98edcbb_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fservice.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	services.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NET.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NET.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe
1212	services.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1212	services.exe
1212	services.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1740 wrote to memory of 1192	1740	adde2fca5b96d6b0b3186ba7a98edcbb_JaffaCakes118.exe	84
PID 1740 wrote to memory of 1192	1740	adde2fca5b96d6b0b3186ba7a98edcbb_JaffaCakes118.exe	84
PID 1740 wrote to memory of 1192	1740	adde2fca5b96d6b0b3186ba7a98edcbb_JaffaCakes118.exe	84
PID 1192 wrote to memory of 1212	1192	fservice.exe	86
PID 1192 wrote to memory of 1212	1192	fservice.exe	86
PID 1192 wrote to memory of 1212	1192	fservice.exe	86
PID 1212 wrote to memory of 1672	1212	services.exe	88
PID 1212 wrote to memory of 1672	1212	services.exe	88
PID 1212 wrote to memory of 1672	1212	services.exe	88
PID 1212 wrote to memory of 2812	1212	services.exe	89
PID 1212 wrote to memory of 2812	1212	services.exe	89
PID 1212 wrote to memory of 2812	1212	services.exe	89
PID 2812 wrote to memory of 3300	2812	NET.exe	92
PID 2812 wrote to memory of 3300	2812	NET.exe	92
PID 2812 wrote to memory of 3300	2812	NET.exe	92
PID 1672 wrote to memory of 864	1672	NET.exe	93
PID 1672 wrote to memory of 864	1672	NET.exe	93
PID 1672 wrote to memory of 864	1672	NET.exe	93

C:\Users\Admin\AppData\Local\Temp\adde2fca5b96d6b0b3186ba7a98edcbb_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\adde2fca5b96d6b0b3186ba7a98edcbb_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:1740
- 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:1192
- - 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:1212
  - - C:\Windows\SysWOW64\NET.exe
      NET STOP srservice
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:1672
    - - C:\Windows\SysWOW64\net1.exe
        
        C:\Windows\system32\net1 STOP srservice
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:864
  - - C:\Windows\SysWOW64\NET.exe
      NET STOP navapsvc
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2812
    - - C:\Windows\SysWOW64\net1.exe
        
        C:\Windows\system32\net1 STOP navapsvc
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:3300

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:\Windows\SysWOW64\fservice.exe

Filesize
557KB

MD5
adde2fca5b96d6b0b3186ba7a98edcbb

SHA1
bf88dbd9dfbd5cd427cb7caeb0c11fae00db5cb5

SHA256
7f95cd69aecb4f59a8845fe50d8e0fdd9d29694615b53f4a1eb780734445e144

SHA512
e7c629231866d5867798ea49f9aac6a88667c5bef92be253623729101868c7ad5690f1bc143e9b11d804aa8a11ed25edee25e9796521eda34ef569ad64750b94

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/1192-34-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/1192-9-0x0000000002480000-0x0000000002481000-memory.dmp

Filesize
4KB

Download
memory/1212-41-0x0000000002570000-0x0000000002571000-memory.dmp

Filesize
4KB

Download
memory/1212-58-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/1212-23-0x0000000010000000-0x000000001000B000-memory.dmp

Filesize
44KB

Download
memory/1212-18-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/1212-68-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/1212-66-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/1212-64-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/1212-62-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/1212-40-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/1212-60-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/1212-43-0x0000000010000000-0x000000001000B000-memory.dmp

Filesize
44KB

Download
memory/1212-42-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/1212-44-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/1212-46-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/1212-48-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/1212-50-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/1212-52-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/1212-54-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/1212-56-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/1212-19-0x0000000002570000-0x0000000002571000-memory.dmp

Filesize
4KB

Download
memory/1740-0-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/1740-39-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/1740-37-0x00000000024C0000-0x00000000024C1000-memory.dmp

Filesize
4KB

Download
memory/1740-36-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/1740-1-0x00000000024C0000-0x00000000024C1000-memory.dmp

Filesize
4KB

Download