0ae9f23b7758f5624d8367910e95d8f49cde463b47628920cc461e73311e55a3

Analysis

max time kernel
150s
max time network
94s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
12/07/2024, 02:30

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General

Target

3bab996a2ca6ecb165c66954855ad025_JaffaCakes118.exe
Size

61KB
MD5

3bab996a2ca6ecb165c66954855ad025
SHA1

44a2dd104bbb89a92df675e44b6a4ee8a614c705
SHA256

0ae9f23b7758f5624d8367910e95d8f49cde463b47628920cc461e73311e55a3
SHA512

b8ae58585b37d0ceb98ea3ef42b5076e7b298aef762027247f7f603197886890773ba5f07bc6cd97353ed7fcab874cb1501116d5ed6b4a151bbbdc09eb840541
SSDEEP

1536:4WrJpTed8eBQHo7LBo0r0eYcKkJycIXWAbZpmlkHkwMA4ZjNKoypR:h9p4BQHohoO0eY7GIXZ1IC0IpR

Score

7^/10

persistence upx

Malware Config

Signatures

Loads dropped DLL 2 IoCs

pid	Process
2792	3bab996a2ca6ecb165c66954855ad025_JaffaCakes118.exe
4736	rundll32.exe

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2792-2-0x0000000000400000-0x0000000000411F46-memory.dmp	upx
behavioral2/memory/2792-1-0x0000000000400000-0x0000000000411F46-memory.dmp	upx
behavioral2/memory/2792-5-0x0000000000400000-0x0000000000411F46-memory.dmp	upx
behavioral2/memory/2792-12-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/2792-11-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/2792-13-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/2792-19-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/4736-29-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/4736-33-0x0000000010000000-0x0000000010014000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\MSServer = "rundll32.exe C:\\Windows\\system32\\rqRJAstq.dll,#1"	rundll32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\efcDSMGW.dll	3bab996a2ca6ecb165c66954855ad025_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\efcDSMGW.dll	3bab996a2ca6ecb165c66954855ad025_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\rqRJAstq.dll	3bab996a2ca6ecb165c66954855ad025_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\rqRJAstq.dll	3bab996a2ca6ecb165c66954855ad025_JaffaCakes118.exe

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4C5AB1EC-0ADD-4825-AA2D-D046A4B35FAC}	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4C5AB1EC-0ADD-4825-AA2D-D046A4B35FAC}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4C5AB1EC-0ADD-4825-AA2D-D046A4B35FAC}\InprocServer32\ = "C:\\Windows\\SysWow64\\rqRJAstq.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4C5AB1EC-0ADD-4825-AA2D-D046A4B35FAC}\InprocServer32\ThreadingModel = "Both"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2792	3bab996a2ca6ecb165c66954855ad025_JaffaCakes118.exe
2792	3bab996a2ca6ecb165c66954855ad025_JaffaCakes118.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe
4736	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2792	3bab996a2ca6ecb165c66954855ad025_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2792	3bab996a2ca6ecb165c66954855ad025_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2792 wrote to memory of 616	2792	3bab996a2ca6ecb165c66954855ad025_JaffaCakes118.exe	5
PID 2792 wrote to memory of 4736	2792	3bab996a2ca6ecb165c66954855ad025_JaffaCakes118.exe	88
PID 2792 wrote to memory of 4736	2792	3bab996a2ca6ecb165c66954855ad025_JaffaCakes118.exe	88
PID 2792 wrote to memory of 4736	2792	3bab996a2ca6ecb165c66954855ad025_JaffaCakes118.exe	88
PID 2792 wrote to memory of 2636	2792	3bab996a2ca6ecb165c66954855ad025_JaffaCakes118.exe	89
PID 2792 wrote to memory of 2636	2792	3bab996a2ca6ecb165c66954855ad025_JaffaCakes118.exe	89
PID 2792 wrote to memory of 2636	2792	3bab996a2ca6ecb165c66954855ad025_JaffaCakes118.exe	89

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:616

C:\Users\Admin\AppData\Local\Temp\3bab996a2ca6ecb165c66954855ad025_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\3bab996a2ca6ecb165c66954855ad025_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2792
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Windows\system32\rqRJAstq.dll,a
  2⤵
  - Loads dropped DLL
  - Adds Run key to start application
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  PID:4736
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\removalfile.bat "C:\Users\Admin\AppData\Local\Temp\3bab996a2ca6ecb165c66954855ad025_JaffaCakes118.exe"
  2⤵
  PID:2636

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

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\removalfile.bat

Filesize
43B

MD5
9a7ef09167a6f4433681b94351509043

SHA1
259b1375ed8e84943ca1d42646bb416325c89e12

SHA256
d5739a0510d89da572eb0b0d394d4fb4dd361cd9ee0144b9b31c590df93c3be7

SHA512
96b84cd88a0e4b7c1122af3ed6ce5edf0a9a4e9bf79575eadfac16b2c46f1278d57755d29f21d7c6dcb4403be24b7ac7da4837c6cc9c602342a8f2b8e54883df

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

Filesize
40KB

MD5
08d7dc229f880875ee98735e5931efae

SHA1
74628497ed684333be41fc439c9ef0b78a003b6a

SHA256
db8003e321191c7002019338e7f5245cfcce5c30b48a439c5dd7b3a1574ee1a3

SHA512
a448e7e027eda8b14f8b936c920cd4856746df7e33459bf4b00d31c4df4e8ea3849bc6e0b6eb2654cb0c2632a0f9042a712db9629f8afedd2e8ebecf2dfa7f18

Download Submit
memory/2792-11-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/2792-13-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/2792-5-0x0000000000400000-0x0000000000411F46-memory.dmp

Filesize
71KB

Download
memory/2792-4-0x0000000000407000-0x0000000000411000-memory.dmp

Filesize
40KB

Download
memory/2792-1-0x0000000000400000-0x0000000000411F46-memory.dmp

Filesize
71KB

Download
memory/2792-12-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/2792-0-0x0000000000400000-0x0000000000411F46-memory.dmp

Filesize
71KB

Download
memory/2792-3-0x00000000004B0000-0x00000000004BE000-memory.dmp

Filesize
56KB

Download
memory/2792-19-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/2792-2-0x0000000000400000-0x0000000000411F46-memory.dmp

Filesize
71KB

Download
memory/4736-30-0x0000000001280000-0x0000000001281000-memory.dmp

Filesize
4KB

Download
memory/4736-29-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/4736-31-0x000000001000E000-0x0000000010013000-memory.dmp

Filesize
20KB

Download
memory/4736-33-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download