ea351b267d590457f5451bf891551eb60532e790c3816a0cb1da63ff72cb7ba1

Analysis

max time kernel
141s
max time network
121s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
13/07/2024, 00:25

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General

Target

3f7c1c8494d507c1fcbd3c82797497dd_JaffaCakes118.exe
Size

339KB
MD5

3f7c1c8494d507c1fcbd3c82797497dd
SHA1

7dde5cdf4e9d4de4524ef18b47d06055235190d7
SHA256

ea351b267d590457f5451bf891551eb60532e790c3816a0cb1da63ff72cb7ba1
SHA512

c4e66b659fdea0127ef4267d3edd5f5216cd5aa98004a36beebdca4eb688d407f08aed5eb4bbcc4eddcfd544cccdd853daba2372bc64d15792b1d6ec757bb54d
SSDEEP

6144:yF8jQMQtt0JiWBFSbEbu+jaTvacPbkgo54UCodblRGxc1xDtFWA9rmNlnBgwM:yF8jAtYB22azaLgzaLUcDDWCrmw

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"	3f7c1c8494d507c1fcbd3c82797497dd_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	3f7c1c8494d507c1fcbd3c82797497dd_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\DirectX For Microsoft® Windows = "C:\\Windows\\system32\\fservice.exe"	3f7c1c8494d507c1fcbd3c82797497dd_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}	3f7c1c8494d507c1fcbd3c82797497dd_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\	3f7c1c8494d507c1fcbd3c82797497dd_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"	3f7c1c8494d507c1fcbd3c82797497dd_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

Deletes itself 1 IoCs

pid	Process
2752	cmd.exe

Executes dropped EXE 2 IoCs

pid	Process
2128	fservice.exe
1288	services.exe

Loads dropped DLL 7 IoCs

pid	Process
1668	3f7c1c8494d507c1fcbd3c82797497dd_JaffaCakes118.exe
1668	3f7c1c8494d507c1fcbd3c82797497dd_JaffaCakes118.exe
1288	services.exe
1288	services.exe
2128	fservice.exe
1668	3f7c1c8494d507c1fcbd3c82797497dd_JaffaCakes118.exe
2764	WerFault.exe

UPX packed file 10 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1668-0-0x0000000000400000-0x00000000005FE000-memory.dmp	upx
behavioral1/memory/1668-1-0x0000000000400000-0x00000000005FE000-memory.dmp	upx
behavioral1/files/0x00090000000120f1-8.dat	upx
behavioral1/memory/2128-14-0x0000000000400000-0x00000000005FE000-memory.dmp	upx
behavioral1/memory/2128-17-0x0000000000400000-0x00000000005FE000-memory.dmp	upx
behavioral1/memory/1288-27-0x0000000000400000-0x00000000005FE000-memory.dmp	upx
behavioral1/memory/1288-30-0x0000000000400000-0x00000000005FE000-memory.dmp	upx
behavioral1/memory/2128-46-0x0000000000400000-0x00000000005FE000-memory.dmp	upx
behavioral1/memory/1668-48-0x0000000000400000-0x00000000005FE000-memory.dmp	upx
behavioral1/memory/1288-52-0x0000000000400000-0x00000000005FE000-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\	3f7c1c8494d507c1fcbd3c82797497dd_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\reginv.dll	services.exe
File created	C:\Windows\SysWOW64\fservice.exe	services.exe
File created	C:\Windows\SysWOW64\fservice.exe	3f7c1c8494d507c1fcbd3c82797497dd_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\fservice.exe	3f7c1c8494d507c1fcbd3c82797497dd_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

Drops file in Windows directory 8 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\sservice.exe	services.exe
File created	C:\Windows\system\sservice.exe	3f7c1c8494d507c1fcbd3c82797497dd_JaffaCakes118.exe
File opened for modification	C:\Windows\system\sservice.exe	3f7c1c8494d507c1fcbd3c82797497dd_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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2764	1288	WerFault.exe	31

Runs net.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1288	services.exe
1288	services.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1288	services.exe
1288	services.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 1668 wrote to memory of 2128	1668	3f7c1c8494d507c1fcbd3c82797497dd_JaffaCakes118.exe	30
PID 1668 wrote to memory of 2128	1668	3f7c1c8494d507c1fcbd3c82797497dd_JaffaCakes118.exe	30
PID 1668 wrote to memory of 2128	1668	3f7c1c8494d507c1fcbd3c82797497dd_JaffaCakes118.exe	30
PID 1668 wrote to memory of 2128	1668	3f7c1c8494d507c1fcbd3c82797497dd_JaffaCakes118.exe	30
PID 2128 wrote to memory of 1288	2128	fservice.exe	31
PID 2128 wrote to memory of 1288	2128	fservice.exe	31
PID 2128 wrote to memory of 1288	2128	fservice.exe	31
PID 2128 wrote to memory of 1288	2128	fservice.exe	31
PID 1288 wrote to memory of 2888	1288	services.exe	32
PID 1288 wrote to memory of 2888	1288	services.exe	32
PID 1288 wrote to memory of 2888	1288	services.exe	32
PID 1288 wrote to memory of 2888	1288	services.exe	32
PID 1288 wrote to memory of 1440	1288	services.exe	33
PID 1288 wrote to memory of 1440	1288	services.exe	33
PID 1288 wrote to memory of 1440	1288	services.exe	33
PID 1288 wrote to memory of 1440	1288	services.exe	33
PID 1668 wrote to memory of 2752	1668	3f7c1c8494d507c1fcbd3c82797497dd_JaffaCakes118.exe	36
PID 1668 wrote to memory of 2752	1668	3f7c1c8494d507c1fcbd3c82797497dd_JaffaCakes118.exe	36
PID 1668 wrote to memory of 2752	1668	3f7c1c8494d507c1fcbd3c82797497dd_JaffaCakes118.exe	36
PID 1668 wrote to memory of 2752	1668	3f7c1c8494d507c1fcbd3c82797497dd_JaffaCakes118.exe	36
PID 2888 wrote to memory of 2600	2888	NET.exe	39
PID 2888 wrote to memory of 2600	2888	NET.exe	39
PID 2888 wrote to memory of 2600	2888	NET.exe	39
PID 2888 wrote to memory of 2600	2888	NET.exe	39
PID 1440 wrote to memory of 2816	1440	NET.exe	38
PID 1440 wrote to memory of 2816	1440	NET.exe	38
PID 1440 wrote to memory of 2816	1440	NET.exe	38
PID 1440 wrote to memory of 2816	1440	NET.exe	38
PID 1288 wrote to memory of 2764	1288	services.exe	40
PID 1288 wrote to memory of 2764	1288	services.exe	40
PID 1288 wrote to memory of 2764	1288	services.exe	40
PID 1288 wrote to memory of 2764	1288	services.exe	40

C:\Users\Admin\AppData\Local\Temp\3f7c1c8494d507c1fcbd3c82797497dd_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\3f7c1c8494d507c1fcbd3c82797497dd_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:1668
- 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:2128
- - 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:1288
  - - C:\Windows\SysWOW64\NET.exe
      NET STOP srservice
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2888
    - - C:\Windows\SysWOW64\net1.exe
        
        C:\Windows\system32\net1 STOP srservice
        5⤵
        
        PID:2600
  - - C:\Windows\SysWOW64\NET.exe
      NET STOP navapsvc
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1440
    - - C:\Windows\SysWOW64\net1.exe
        
        C:\Windows\system32\net1 STOP navapsvc
        5⤵
        
        PID:2816
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1288 -s 620
      4⤵
      Loads dropped DLL
      Program crash
      PID:2764
- C:\Windows\SysWOW64\cmd.exe
  cmd /c C:\Users\Admin\AppData\Local\Temp\3f7c1c8494d507c1fcbd3c82797497dd_JaffaCakes118.exe.bat
  2⤵
  - Deletes itself
  PID:2752

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\3f7c1c8494d507c1fcbd3c82797497dd_JaffaCakes118.exe.bat

Filesize
133B

MD5
d51b6b401efecfda46858bc0689fe3e8

SHA1
3cc146ece8a70ab88fc33615fa1b621e5c0ff8a4

SHA256
7116a810a0e976f8ef4648f53564baef3fe54b31ad3ec0df20580efe3155bf57

SHA512
246c7265191ee6841db10e65c026aab766a91afccf07606b55d61ac15ade06cdc6f3adf1b444a6ee40b6efd273de07d48ee0daca3a9099defcc6d54e32a94f90

Download Submit
\Windows\SysWOW64\fservice.exe

Filesize
339KB

MD5
3f7c1c8494d507c1fcbd3c82797497dd

SHA1
7dde5cdf4e9d4de4524ef18b47d06055235190d7

SHA256
ea351b267d590457f5451bf891551eb60532e790c3816a0cb1da63ff72cb7ba1

SHA512
c4e66b659fdea0127ef4267d3edd5f5216cd5aa98004a36beebdca4eb688d407f08aed5eb4bbcc4eddcfd544cccdd853daba2372bc64d15792b1d6ec757bb54d

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/1288-30-0x0000000000400000-0x00000000005FE000-memory.dmp

Filesize
2.0MB

Download
memory/1288-52-0x0000000000400000-0x00000000005FE000-memory.dmp

Filesize
2.0MB

Download
memory/1288-27-0x0000000000400000-0x00000000005FE000-memory.dmp

Filesize
2.0MB

Download
memory/1668-12-0x00000000033B0000-0x00000000035AE000-memory.dmp

Filesize
2.0MB

Download
memory/1668-0-0x0000000000400000-0x00000000005FE000-memory.dmp

Filesize
2.0MB

Download
memory/1668-48-0x0000000000400000-0x00000000005FE000-memory.dmp

Filesize
2.0MB

Download
memory/1668-1-0x0000000000400000-0x00000000005FE000-memory.dmp

Filesize
2.0MB

Download
memory/2128-17-0x0000000000400000-0x00000000005FE000-memory.dmp

Filesize
2.0MB

Download
memory/2128-25-0x0000000003330000-0x000000000352E000-memory.dmp

Filesize
2.0MB

Download
memory/2128-14-0x0000000000400000-0x00000000005FE000-memory.dmp

Filesize
2.0MB

Download
memory/2128-46-0x0000000000400000-0x00000000005FE000-memory.dmp

Filesize
2.0MB

Download