4d0771b4ea3944dfc409d06ba11f3f732fc94407a562737d738ea80d82aee2a2

Analysis

max time kernel
149s
max time network
138s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
20/09/2024, 14:11

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General

Target

edc25b8edcb004a8add6f6a75461dcc1_JaffaCakes118.exe
Size

342KB
MD5

edc25b8edcb004a8add6f6a75461dcc1
SHA1

4434da75a97d9f8dae3d006e2d71a8f51bd1c606
SHA256

4d0771b4ea3944dfc409d06ba11f3f732fc94407a562737d738ea80d82aee2a2
SHA512

729338ebe2e76d2659810dd0f406623f9ea0ff581a4ba39aec9c92c5ea82905a315d116cd5cd4fa692cc5af3caf46fa2b407e4ef537f9dc22d0e2a2e19b72a0b
SSDEEP

6144:gRqmpp+amNOGokzLyM9tsLAitQo6tzOKkzIt8gKyfjxfR9D2j4yc71g:0qmpplpGoGL3etQoMiXM8gxf/Sj4yu1g

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"	services.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe C:\\Windows\\system32\\fservice.exe"	edc25b8edcb004a8add6f6a75461dcc1_JaffaCakes118.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	edc25b8edcb004a8add6f6a75461dcc1_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\DirectX For Microsoft® Windows = "C:\\Windows\\system32\\fservice.exe"	edc25b8edcb004a8add6f6a75461dcc1_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
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}	edc25b8edcb004a8add6f6a75461dcc1_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\	edc25b8edcb004a8add6f6a75461dcc1_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"	edc25b8edcb004a8add6f6a75461dcc1_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/0x000800000002361d-21.dat	aspack_v212_v242

Executes dropped EXE 2 IoCs

pid	Process
4928	fservice.exe
3356	services.exe

Loads dropped DLL 5 IoCs

pid	Process
3356	services.exe
3356	services.exe
3356	services.exe
4928	fservice.exe
3968	edc25b8edcb004a8add6f6a75461dcc1_JaffaCakes118.exe

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3968-0-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/files/0x0009000000023616-6.dat	upx
behavioral2/memory/3356-18-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/3968-39-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/4928-36-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/3356-41-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/3356-43-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/3356-45-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/3356-47-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/3356-49-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/3356-51-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/3356-53-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/3356-55-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/3356-57-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/3356-59-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/3356-61-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/3356-63-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/3356-65-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/3356-67-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/3356-69-0x0000000000400000-0x00000000005FC000-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\	services.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\	edc25b8edcb004a8add6f6a75461dcc1_JaffaCakes118.exe

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	edc25b8edcb004a8add6f6a75461dcc1_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\fservice.exe	edc25b8edcb004a8add6f6a75461dcc1_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	edc25b8edcb004a8add6f6a75461dcc1_JaffaCakes118.exe
File opened for modification	C:\Windows\system\sservice.exe	edc25b8edcb004a8add6f6a75461dcc1_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	edc25b8edcb004a8add6f6a75461dcc1_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
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

Runs net.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe
3356	services.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3356	services.exe
3356	services.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 3968 wrote to memory of 4928	3968	edc25b8edcb004a8add6f6a75461dcc1_JaffaCakes118.exe	89
PID 3968 wrote to memory of 4928	3968	edc25b8edcb004a8add6f6a75461dcc1_JaffaCakes118.exe	89
PID 3968 wrote to memory of 4928	3968	edc25b8edcb004a8add6f6a75461dcc1_JaffaCakes118.exe	89
PID 4928 wrote to memory of 3356	4928	fservice.exe	90
PID 4928 wrote to memory of 3356	4928	fservice.exe	90
PID 4928 wrote to memory of 3356	4928	fservice.exe	90
PID 3356 wrote to memory of 2164	3356	services.exe	91
PID 3356 wrote to memory of 2164	3356	services.exe	91
PID 3356 wrote to memory of 2164	3356	services.exe	91
PID 3356 wrote to memory of 2352	3356	services.exe	92
PID 3356 wrote to memory of 2352	3356	services.exe	92
PID 3356 wrote to memory of 2352	3356	services.exe	92
PID 3968 wrote to memory of 2956	3968	edc25b8edcb004a8add6f6a75461dcc1_JaffaCakes118.exe	95
PID 3968 wrote to memory of 2956	3968	edc25b8edcb004a8add6f6a75461dcc1_JaffaCakes118.exe	95
PID 3968 wrote to memory of 2956	3968	edc25b8edcb004a8add6f6a75461dcc1_JaffaCakes118.exe	95
PID 2352 wrote to memory of 4564	2352	NET.exe	97
PID 2352 wrote to memory of 4564	2352	NET.exe	97
PID 2352 wrote to memory of 4564	2352	NET.exe	97
PID 2164 wrote to memory of 2884	2164	NET.exe	98
PID 2164 wrote to memory of 2884	2164	NET.exe	98
PID 2164 wrote to memory of 2884	2164	NET.exe	98

C:\Users\Admin\AppData\Local\Temp\edc25b8edcb004a8add6f6a75461dcc1_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\edc25b8edcb004a8add6f6a75461dcc1_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:3968
- 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:4928
- - 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:3356
  - - C:\Windows\SysWOW64\NET.exe
      NET STOP srservice
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2164
    - - C:\Windows\SysWOW64\net1.exe
        
        C:\Windows\system32\net1 STOP srservice
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:2884
  - - C:\Windows\SysWOW64\NET.exe
      NET STOP navapsvc
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2352
    - - C:\Windows\SysWOW64\net1.exe
        
        C:\Windows\system32\net1 STOP navapsvc
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:4564
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\edc25b8edcb004a8add6f6a75461dcc1_JaffaCakes118.exe.bat
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2956

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4008,i,15336851255456239337,16379811035920490645,262144 --variations-seed-version --mojo-platform-channel-handle=4104 /prefetch:8
1⤵
PID:4784

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\edc25b8edcb004a8add6f6a75461dcc1_JaffaCakes118.exe.bat

Filesize
133B

MD5
026dc48af7002155cf5048cec166bcfb

SHA1
09052951cd2b1f9245fedb55b4eeeb13f992f361

SHA256
f436dfe3c39eb8021885588c778426460f990b2c641a8235c2a10ccb487b3489

SHA512
437d6e7567eae5fc1bcaf018ec466a4d60b096adc62904c0c437e44b2ed7d97b870e1a6a11454fc6058d0baa142ead9c0e65fedbb915b5a2408dcf96f9389841

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

Filesize
342KB

MD5
edc25b8edcb004a8add6f6a75461dcc1

SHA1
4434da75a97d9f8dae3d006e2d71a8f51bd1c606

SHA256
4d0771b4ea3944dfc409d06ba11f3f732fc94407a562737d738ea80d82aee2a2

SHA512
729338ebe2e76d2659810dd0f406623f9ea0ff581a4ba39aec9c92c5ea82905a315d116cd5cd4fa692cc5af3caf46fa2b407e4ef537f9dc22d0e2a2e19b72a0b

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/3356-44-0x0000000010000000-0x000000001000B000-memory.dmp

Filesize
44KB

Download
memory/3356-59-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/3356-23-0x0000000010000000-0x000000001000B000-memory.dmp

Filesize
44KB

Download
memory/3356-19-0x0000000002570000-0x0000000002571000-memory.dmp

Filesize
4KB

Download
memory/3356-69-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/3356-67-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/3356-65-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/3356-63-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/3356-41-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/3356-42-0x0000000002570000-0x0000000002571000-memory.dmp

Filesize
4KB

Download
memory/3356-61-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/3356-43-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/3356-45-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/3356-47-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/3356-49-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/3356-51-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/3356-53-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/3356-55-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/3356-57-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/3356-18-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/3968-0-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/3968-1-0x0000000000810000-0x0000000000811000-memory.dmp

Filesize
4KB

Download
memory/3968-39-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/4928-36-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/4928-9-0x0000000000BD0000-0x0000000000BD1000-memory.dmp

Filesize
4KB

Download