5467f78da0d29d217025867e03df235c640e89cf16c1ed0dab5d0bd26df54c5a

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
14/08/2024, 09:37

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General

Target

958ab8843c86766f0bd6bc1bf73ef73e_JaffaCakes118.exe
Size

2.0MB
MD5

958ab8843c86766f0bd6bc1bf73ef73e
SHA1

cb6a3a49e7035b8f9429a5a1b1a6b8c14135a0ca
SHA256

5467f78da0d29d217025867e03df235c640e89cf16c1ed0dab5d0bd26df54c5a
SHA512

07928dd6f2aa120bc64ac8fa65da2c22b360bf00dadc3934c88983ff4b7221325bd4dbfdea5038aeb1a14c63a52d37e7b355f50ee266bd8bf62b2ba2126f7947
SSDEEP

49152:eZvXFS4cVH7mM+MWUrHFlMFckFR1F91F50F/yUSAqt/K28K8y3eNatFR2xvpyOiq:0CHd+M5

Score

10^/10

aspackv2 discovery persistence

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"	958ab8843c86766f0bd6bc1bf73ef73e_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	958ab8843c86766f0bd6bc1bf73ef73e_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\DirectX For Microsoft® Windows = "C:\\Windows\\system32\\fservice.exe"	958ab8843c86766f0bd6bc1bf73ef73e_JaffaCakes118.exe
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

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}	958ab8843c86766f0bd6bc1bf73ef73e_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\	958ab8843c86766f0bd6bc1bf73ef73e_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"	958ab8843c86766f0bd6bc1bf73ef73e_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/0x000800000002344f-22.dat	aspack_v212_v242

Executes dropped EXE 2 IoCs

pid	Process
1100	fservice.exe
3936	services.exe

Loads dropped DLL 7 IoCs

pid	Process
3936	services.exe
3936	services.exe
3936	services.exe
1100	fservice.exe
1560	WerFault.exe
3372	958ab8843c86766f0bd6bc1bf73ef73e_JaffaCakes118.exe
3860	WerFault.exe

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\	958ab8843c86766f0bd6bc1bf73ef73e_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\	services.exe

Network Share Discovery 1 TTPs
Attempt to gather information on host network.
discovery

Network Share Discovery
T1135

Drops file in System32 directory 7 IoCs

description	ioc	Process
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
File created	C:\Windows\SysWOW64\fservice.exe	958ab8843c86766f0bd6bc1bf73ef73e_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\fservice.exe	958ab8843c86766f0bd6bc1bf73ef73e_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\fservice.exe	fservice.exe

Drops file in Windows directory 7 IoCs

description	ioc	Process
File created	C:\Windows\system\sservice.exe	services.exe
File created	C:\Windows\system\sservice.exe	958ab8843c86766f0bd6bc1bf73ef73e_JaffaCakes118.exe
File opened for modification	C:\Windows\system\sservice.exe	958ab8843c86766f0bd6bc1bf73ef73e_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

Program crash 3 IoCs

pid	pid_target	Process	procid_target
3312	3936	WerFault.exe	85
1560	1100	WerFault.exe	84
3860	3372	WerFault.exe	83

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

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	services.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	NET.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	958ab8843c86766f0bd6bc1bf73ef73e_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fservice.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe
3936	services.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3936	services.exe
3936	services.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 3372 wrote to memory of 1100	3372	958ab8843c86766f0bd6bc1bf73ef73e_JaffaCakes118.exe	84
PID 3372 wrote to memory of 1100	3372	958ab8843c86766f0bd6bc1bf73ef73e_JaffaCakes118.exe	84
PID 3372 wrote to memory of 1100	3372	958ab8843c86766f0bd6bc1bf73ef73e_JaffaCakes118.exe	84
PID 1100 wrote to memory of 3936	1100	fservice.exe	85
PID 1100 wrote to memory of 3936	1100	fservice.exe	85
PID 1100 wrote to memory of 3936	1100	fservice.exe	85
PID 3936 wrote to memory of 4856	3936	services.exe	88
PID 3936 wrote to memory of 4856	3936	services.exe	88
PID 3936 wrote to memory of 4856	3936	services.exe	88
PID 3936 wrote to memory of 4860	3936	services.exe	89
PID 3936 wrote to memory of 4860	3936	services.exe	89
PID 3936 wrote to memory of 4860	3936	services.exe	89
PID 4860 wrote to memory of 3200	4860	NET.exe	94
PID 4860 wrote to memory of 3200	4860	NET.exe	94
PID 4860 wrote to memory of 3200	4860	NET.exe	94
PID 4856 wrote to memory of 4680	4856	NET.exe	95
PID 4856 wrote to memory of 4680	4856	NET.exe	95
PID 4856 wrote to memory of 4680	4856	NET.exe	95
PID 3936 wrote to memory of 1268	3936	services.exe	98
PID 3936 wrote to memory of 1268	3936	services.exe	98
PID 3936 wrote to memory of 1268	3936	services.exe	98
PID 1268 wrote to memory of 924	1268	NET.exe	101
PID 1268 wrote to memory of 924	1268	NET.exe	101
PID 1268 wrote to memory of 924	1268	NET.exe	101

C:\Users\Admin\AppData\Local\Temp\958ab8843c86766f0bd6bc1bf73ef73e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\958ab8843c86766f0bd6bc1bf73ef73e_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:3372
- 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:1100
- - 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:3936
  - - C:\Windows\SysWOW64\NET.exe
      NET STOP SharedAccess
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:4856
    - - C:\Windows\SysWOW64\net1.exe
        
        C:\Windows\system32\net1 STOP SharedAccess
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:4680
  - - C:\Windows\SysWOW64\NET.exe
      NET STOP srservice
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:4860
    - - C:\Windows\SysWOW64\net1.exe
        
        C:\Windows\system32\net1 STOP srservice
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:3200
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3936 -s 828
      4⤵
      Program crash
      PID:3312
  - - C:\Windows\SysWOW64\NET.exe
      NET STOP navapsvc
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:1268
    - - C:\Windows\SysWOW64\net1.exe
        
        C:\Windows\system32\net1 STOP navapsvc
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:924
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1100 -s 860
    3⤵
    - Loads dropped DLL
    - Program crash
    PID:1560
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3372 -s 896
  2⤵
  - Loads dropped DLL
  - Program crash
  PID:3860

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3936 -ip 3936
1⤵
PID:1644

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 1100 -ip 1100
1⤵
PID:3268

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 3372 -ip 3372
1⤵
PID:3588

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

Network Share Discovery

T1135

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
2.0MB

MD5
958ab8843c86766f0bd6bc1bf73ef73e

SHA1
cb6a3a49e7035b8f9429a5a1b1a6b8c14135a0ca

SHA256
5467f78da0d29d217025867e03df235c640e89cf16c1ed0dab5d0bd26df54c5a

SHA512
07928dd6f2aa120bc64ac8fa65da2c22b360bf00dadc3934c88983ff4b7221325bd4dbfdea5038aeb1a14c63a52d37e7b355f50ee266bd8bf62b2ba2126f7947

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

Filesize
20KB

MD5
904f3b552d0b762edb4520163d12d3cf

SHA1
5cca6b60732fe12d5d0d33e2fb2eb0c9004b9a8a

SHA256
6f2c2b2c8733eac6ca9fb1e95804ab08fcff20caa9e2a59b300400f18900b874

SHA512
14a8855ea04cf0bd9508bca077995eb4700988043ae63b8c320762904f415b0a29de5f9bfd8f1c1b9e1cd76700e6e988569b33f14c8a3ed16fa6eade10ab40a4

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

Filesize
16KB

MD5
d910659cca6a1650c10ff263c8a10fe7

SHA1
d38dbccb50b63430a51d8f6df2a6c4d23677cff0

SHA256
5b308dfdd00dadc887a56f90e05ebfa9963be0c463d524e2ddd8680cb810d2d8

SHA512
30c2e455478d270fc1800d251e36014f16c5e7dd9e67c1c1b0f5d4e6070fbd2875c6706efff710b83897704cefb10c7ce1b5c993548568c1f142e5b5c8d44df4

Download Submit
memory/1100-9-0x0000000000400000-0x0000000000B11C1C-memory.dmp

Filesize
7.1MB

Download
memory/1100-10-0x0000000000C10000-0x0000000000C11000-memory.dmp

Filesize
4KB

Download
memory/1100-35-0x0000000010000000-0x0000000010008000-memory.dmp

Filesize
32KB

Download
memory/1100-38-0x0000000010000000-0x0000000010008000-memory.dmp

Filesize
32KB

Download
memory/1100-37-0x0000000000400000-0x0000000000B11C1C-memory.dmp

Filesize
7.1MB

Download
memory/3372-0-0x0000000000400000-0x0000000000B11C1C-memory.dmp

Filesize
7.1MB

Download
memory/3372-45-0x0000000010000000-0x0000000010008000-memory.dmp

Filesize
32KB

Download
memory/3372-44-0x0000000000400000-0x0000000000B11C1C-memory.dmp

Filesize
7.1MB

Download
memory/3372-42-0x0000000000400000-0x0000000000B11C1C-memory.dmp

Filesize
7.1MB

Download
memory/3372-1-0x0000000001140000-0x0000000001141000-memory.dmp

Filesize
4KB

Download
memory/3372-43-0x0000000001140000-0x0000000001141000-memory.dmp

Filesize
4KB

Download
memory/3372-40-0x0000000010000000-0x0000000010008000-memory.dmp

Filesize
32KB

Download
memory/3936-19-0x0000000000400000-0x0000000000B11C1C-memory.dmp

Filesize
7.1MB

Download
memory/3936-32-0x00000000029F0000-0x00000000029F8000-memory.dmp

Filesize
32KB

Download
memory/3936-25-0x0000000010000000-0x000000001000B000-memory.dmp

Filesize
44KB

Download
memory/3936-20-0x00000000029C0000-0x00000000029C1000-memory.dmp

Filesize
4KB

Download
memory/3936-47-0x0000000000400000-0x0000000000B11C1C-memory.dmp

Filesize
7.1MB

Download
memory/3936-48-0x00000000029C0000-0x00000000029C1000-memory.dmp

Filesize
4KB

Download