9b3c2d2a595cb4139fdb32d84394e46fbc049749eb2326d5ab79913e89a66614

Analysis

max time kernel
141s
max time network
128s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
01/07/2024, 08:17

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General

Target

1a91774e8ae6037e78f251e9a9bb1eb3_JaffaCakes118.exe
Size

341KB
MD5

1a91774e8ae6037e78f251e9a9bb1eb3
SHA1

bb044c1f423ed73adf2d9465ac5a2e6fc8146226
SHA256

9b3c2d2a595cb4139fdb32d84394e46fbc049749eb2326d5ab79913e89a66614
SHA512

411f1b2da23a4d8cf5a0868c8fa4b749ec95efba7d2ac61b5ed0a61d28a13da4f152eabb4d1f723b50083ec2885598dcb8b968ac20e1ca4d7d900de3c9c2d87a
SSDEEP

6144:u36i6htdvIydnCseroPQKvU9wPhFOXQsZrPTeoHm0HhDtdT22CpuvNJSE7V1XD6E:g6/DdQHroPTAwpwXQsBPTeoG0HhDtdCa

Score

10^/10

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"	1a91774e8ae6037e78f251e9a9bb1eb3_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"	1a91774e8ae6037e78f251e9a9bb1eb3_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
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	1a91774e8ae6037e78f251e9a9bb1eb3_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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\StubPath = "C:\\Windows\\system\\sservice.exe"	1a91774e8ae6037e78f251e9a9bb1eb3_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}	1a91774e8ae6037e78f251e9a9bb1eb3_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\	1a91774e8ae6037e78f251e9a9bb1eb3_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
2432	cmd.exe

Executes dropped EXE 2 IoCs

pid	Process
1248	fservice.exe
2488	services.exe

Loads dropped DLL 7 IoCs

pid	Process
2192	1a91774e8ae6037e78f251e9a9bb1eb3_JaffaCakes118.exe
2192	1a91774e8ae6037e78f251e9a9bb1eb3_JaffaCakes118.exe
2488	services.exe
2488	services.exe
1248	fservice.exe
2192	1a91774e8ae6037e78f251e9a9bb1eb3_JaffaCakes118.exe
2460	WerFault.exe

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2192-0-0x0000000000400000-0x00000000005FF000-memory.dmp	upx
behavioral1/files/0x000d000000012346-6.dat	upx
behavioral1/memory/2192-7-0x00000000032E0000-0x00000000034DF000-memory.dmp	upx
behavioral1/memory/1248-14-0x0000000000400000-0x00000000005FF000-memory.dmp	upx
behavioral1/memory/1248-25-0x00000000033B0000-0x00000000035AF000-memory.dmp	upx
behavioral1/memory/2488-26-0x0000000000400000-0x00000000005FF000-memory.dmp	upx
behavioral1/memory/1248-44-0x0000000000400000-0x00000000005FF000-memory.dmp	upx
behavioral1/memory/2192-49-0x0000000000400000-0x00000000005FF000-memory.dmp	upx
behavioral1/memory/2488-53-0x0000000000400000-0x00000000005FF000-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\	1a91774e8ae6037e78f251e9a9bb1eb3_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	1a91774e8ae6037e78f251e9a9bb1eb3_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\fservice.exe	1a91774e8ae6037e78f251e9a9bb1eb3_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 8 IoCs

description	ioc	Process
File created	C:\Windows\system\sservice.exe	1a91774e8ae6037e78f251e9a9bb1eb3_JaffaCakes118.exe
File opened for modification	C:\Windows\system\sservice.exe	1a91774e8ae6037e78f251e9a9bb1eb3_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
File opened for modification	C:\Windows\system\sservice.exe	services.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2460	2488	WerFault.exe	29

Runs net.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2488	services.exe
2488	services.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2488	services.exe
2488	services.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 2192 wrote to memory of 1248	2192	1a91774e8ae6037e78f251e9a9bb1eb3_JaffaCakes118.exe	28
PID 2192 wrote to memory of 1248	2192	1a91774e8ae6037e78f251e9a9bb1eb3_JaffaCakes118.exe	28
PID 2192 wrote to memory of 1248	2192	1a91774e8ae6037e78f251e9a9bb1eb3_JaffaCakes118.exe	28
PID 2192 wrote to memory of 1248	2192	1a91774e8ae6037e78f251e9a9bb1eb3_JaffaCakes118.exe	28
PID 1248 wrote to memory of 2488	1248	fservice.exe	29
PID 1248 wrote to memory of 2488	1248	fservice.exe	29
PID 1248 wrote to memory of 2488	1248	fservice.exe	29
PID 1248 wrote to memory of 2488	1248	fservice.exe	29
PID 2488 wrote to memory of 2512	2488	services.exe	30
PID 2488 wrote to memory of 2512	2488	services.exe	30
PID 2488 wrote to memory of 2512	2488	services.exe	30
PID 2488 wrote to memory of 2512	2488	services.exe	30
PID 2488 wrote to memory of 2804	2488	services.exe	31
PID 2488 wrote to memory of 2804	2488	services.exe	31
PID 2488 wrote to memory of 2804	2488	services.exe	31
PID 2488 wrote to memory of 2804	2488	services.exe	31
PID 2192 wrote to memory of 2432	2192	1a91774e8ae6037e78f251e9a9bb1eb3_JaffaCakes118.exe	34
PID 2192 wrote to memory of 2432	2192	1a91774e8ae6037e78f251e9a9bb1eb3_JaffaCakes118.exe	34
PID 2192 wrote to memory of 2432	2192	1a91774e8ae6037e78f251e9a9bb1eb3_JaffaCakes118.exe	34
PID 2192 wrote to memory of 2432	2192	1a91774e8ae6037e78f251e9a9bb1eb3_JaffaCakes118.exe	34
PID 2512 wrote to memory of 2388	2512	NET.exe	36
PID 2512 wrote to memory of 2388	2512	NET.exe	36
PID 2512 wrote to memory of 2388	2512	NET.exe	36
PID 2512 wrote to memory of 2388	2512	NET.exe	36
PID 2804 wrote to memory of 2396	2804	NET.exe	37
PID 2804 wrote to memory of 2396	2804	NET.exe	37
PID 2804 wrote to memory of 2396	2804	NET.exe	37
PID 2804 wrote to memory of 2396	2804	NET.exe	37
PID 2488 wrote to memory of 2460	2488	services.exe	38
PID 2488 wrote to memory of 2460	2488	services.exe	38
PID 2488 wrote to memory of 2460	2488	services.exe	38
PID 2488 wrote to memory of 2460	2488	services.exe	38

C:\Users\Admin\AppData\Local\Temp\1a91774e8ae6037e78f251e9a9bb1eb3_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\1a91774e8ae6037e78f251e9a9bb1eb3_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
- Suspicious use of WriteProcessMemory
PID:2192
- 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
  - Suspicious use of WriteProcessMemory
  PID:1248
- - 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
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2488
  - - C:\Windows\SysWOW64\NET.exe
      NET STOP srservice
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2512
    - - C:\Windows\SysWOW64\net1.exe
        
        C:\Windows\system32\net1 STOP srservice
        5⤵
        
        PID:2388
  - - C:\Windows\SysWOW64\NET.exe
      NET STOP navapsvc
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2804
    - - C:\Windows\SysWOW64\net1.exe
        
        C:\Windows\system32\net1 STOP navapsvc
        5⤵
        
        PID:2396
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2488 -s 612
      4⤵
      Loads dropped DLL
      Program crash
      PID:2460
- C:\Windows\SysWOW64\cmd.exe
  cmd /c C:\Users\Admin\AppData\Local\Temp\1a91774e8ae6037e78f251e9a9bb1eb3_JaffaCakes118.exe.bat
  2⤵
  - Deletes itself
  PID:2432

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\1a91774e8ae6037e78f251e9a9bb1eb3_JaffaCakes118.exe.bat

Filesize
133B

MD5
2bd33017441b7eb1c7aa1bc684506c8c

SHA1
c1a5a800d74e8498eb642580a951c7ab3698861a

SHA256
f4944b58d765a72637a56be34c1713055f41e237b88d55ca38f5fa1efd5fbf68

SHA512
157b3254c17ad56503e5b2b4c195cc1dacf04483e12827e449d645c74638cacd273460ed0369917f8244d065916d82458e43d9d96be60fe272eab074c8b49b8c

Download Submit
\Windows\SysWOW64\fservice.exe

Filesize
341KB

MD5
1a91774e8ae6037e78f251e9a9bb1eb3

SHA1
bb044c1f423ed73adf2d9465ac5a2e6fc8146226

SHA256
9b3c2d2a595cb4139fdb32d84394e46fbc049749eb2326d5ab79913e89a66614

SHA512
411f1b2da23a4d8cf5a0868c8fa4b749ec95efba7d2ac61b5ed0a61d28a13da4f152eabb4d1f723b50083ec2885598dcb8b968ac20e1ca4d7d900de3c9c2d87a

Download Submit
\Windows\SysWOW64\reginv.dll

Filesize
36KB

MD5
d4a3f90e159ffbcbc4f9740de4b7f171

SHA1
0542f5d1e2c23dca8d90766b3a8537dc3880e5c9

SHA256
2200dd5f83d2fb8c5d3994206a4fa9ff34b4cbfe56ed39a9a03c954cf45d8f77

SHA512
5493beb50b5f7d8ec52f32718d01696916ae173456005d0c1294ce695161ce5004aff58ee3892bf5db0f9b23720146a6d3ae8ffbcbbd81f84d894fdc8cf75a94

Download Submit
\Windows\SysWOW64\winkey.dll

Filesize
24KB

MD5
43e7d9b875c921ba6be38d45540fb9dd

SHA1
f22a73fc0d4aa3ea6c0b8f61d974b028f308acc4

SHA256
f1b2b0abe844e6ba812c7f8709a463a7f6c56fa6ac38d376a0739cc3469f795b

SHA512
2e74e23c0875b69b82319391c392132f28f4eb45aa412805130382498ae48969a06a2b3a7528b626fa7d7ddb6b006f19f0ef8d73cf73cb9a0c0df44a21077622

Download Submit
memory/1248-44-0x0000000000400000-0x00000000005FF000-memory.dmp

Filesize
2.0MB

Download
memory/1248-15-0x0000000000260000-0x0000000000261000-memory.dmp

Filesize
4KB

Download
memory/1248-25-0x00000000033B0000-0x00000000035AF000-memory.dmp

Filesize
2.0MB

Download
memory/1248-14-0x0000000000400000-0x00000000005FF000-memory.dmp

Filesize
2.0MB

Download
memory/1248-28-0x00000000033B0000-0x00000000035AF000-memory.dmp

Filesize
2.0MB

Download
memory/2192-7-0x00000000032E0000-0x00000000034DF000-memory.dmp

Filesize
2.0MB

Download
memory/2192-0-0x0000000000400000-0x00000000005FF000-memory.dmp

Filesize
2.0MB

Download
memory/2192-1-0x0000000000270000-0x0000000000271000-memory.dmp

Filesize
4KB

Download
memory/2192-49-0x0000000000400000-0x00000000005FF000-memory.dmp

Filesize
2.0MB

Download
memory/2488-29-0x00000000002A0000-0x00000000002A1000-memory.dmp

Filesize
4KB

Download
memory/2488-26-0x0000000000400000-0x00000000005FF000-memory.dmp

Filesize
2.0MB

Download
memory/2488-53-0x0000000000400000-0x00000000005FF000-memory.dmp

Filesize
2.0MB

Download
memory/2488-55-0x00000000002A0000-0x00000000002A1000-memory.dmp

Filesize
4KB

Download