17d05ca725f9492edaebf0097a215dddefa7f12bc12b137e2762f5cfdf88085c

Analysis

max time kernel
150s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
25/09/2024, 14:37

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General

Target

f63a75dc5d2d145778daf7a5065884e4_JaffaCakes118.exe
Size

55KB
MD5

f63a75dc5d2d145778daf7a5065884e4
SHA1

67e7e14835ab159cd0e899f54c2681986883fe0c
SHA256

17d05ca725f9492edaebf0097a215dddefa7f12bc12b137e2762f5cfdf88085c
SHA512

15495e08c196c9e59e56db684882b837abf638789955bc5d99ca4cd12c24b196c726acd6b0190da22eaa14858c2781428031b0f81fb6e87558c765fd1a3bf40b
SSDEEP

768:gmc6CcRliMhObOlhQ3odLZ4NnUjEBbFn7+VjRbqJrMZpHZCc1ghF8fviFZ:njj7lhQ3od1+vbFiVjcJrMZpHUc6lFZ

Score

7^/10

discovery persistence upx

Malware Config

Signatures

Loads dropped DLL 2 IoCs

pid	Process
4516	f63a75dc5d2d145778daf7a5065884e4_JaffaCakes118.exe
3548	rundll32.exe

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\\opnklmMd.dll,#1"	rundll32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\rqRIcyAq.dll	f63a75dc5d2d145778daf7a5065884e4_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\rqRIcyAq.dll	f63a75dc5d2d145778daf7a5065884e4_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\opnklmMd.dll	f63a75dc5d2d145778daf7a5065884e4_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\opnklmMd.dll	f63a75dc5d2d145778daf7a5065884e4_JaffaCakes118.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4516-1-0x0000000000400000-0x000000000041C000-memory.dmp	upx
behavioral2/memory/4516-2-0x0000000000400000-0x000000000041C000-memory.dmp	upx
behavioral2/memory/4516-14-0x0000000010000000-0x000000001001D000-memory.dmp	upx
behavioral2/memory/3548-22-0x0000000010000000-0x000000001001D000-memory.dmp	upx
behavioral2/memory/3548-23-0x0000000010000000-0x000000001001D000-memory.dmp	upx
behavioral2/memory/3548-26-0x0000000010000000-0x000000001001D000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 3 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	f63a75dc5d2d145778daf7a5065884e4_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{96E74E0B-9143-4D55-B522-35112296956A}	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{96E74E0B-9143-4D55-B522-35112296956A}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{96E74E0B-9143-4D55-B522-35112296956A}\InprocServer32\ = "C:\\Windows\\SysWow64\\opnklmMd.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{96E74E0B-9143-4D55-B522-35112296956A}\InprocServer32\ThreadingModel = "Both"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4516	f63a75dc5d2d145778daf7a5065884e4_JaffaCakes118.exe
4516	f63a75dc5d2d145778daf7a5065884e4_JaffaCakes118.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe
3548	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4516	f63a75dc5d2d145778daf7a5065884e4_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4516	f63a75dc5d2d145778daf7a5065884e4_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 4516 wrote to memory of 628	4516	f63a75dc5d2d145778daf7a5065884e4_JaffaCakes118.exe	5
PID 4516 wrote to memory of 3548	4516	f63a75dc5d2d145778daf7a5065884e4_JaffaCakes118.exe	90
PID 4516 wrote to memory of 3548	4516	f63a75dc5d2d145778daf7a5065884e4_JaffaCakes118.exe	90
PID 4516 wrote to memory of 3548	4516	f63a75dc5d2d145778daf7a5065884e4_JaffaCakes118.exe	90
PID 4516 wrote to memory of 1904	4516	f63a75dc5d2d145778daf7a5065884e4_JaffaCakes118.exe	91
PID 4516 wrote to memory of 1904	4516	f63a75dc5d2d145778daf7a5065884e4_JaffaCakes118.exe	91
PID 4516 wrote to memory of 1904	4516	f63a75dc5d2d145778daf7a5065884e4_JaffaCakes118.exe	91

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:628

C:\Users\Admin\AppData\Local\Temp\f63a75dc5d2d145778daf7a5065884e4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f63a75dc5d2d145778daf7a5065884e4_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4516
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Windows\system32\opnklmMd.dll,a
  2⤵
  - Loads dropped DLL
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  PID:3548
- 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\f63a75dc5d2d145778daf7a5065884e4_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1904

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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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\rqRIcyAq.dll

Filesize
40KB

MD5
9ae341ce43bd8d9aaca40a472e5c64fc

SHA1
b7e3a00837de275892fb7088f73032efa3e2e4d7

SHA256
cc5b7d4240c8aa43efb85bcb8ed292bf31d5350a156887bc99c549d6c88aec44

SHA512
2b9b21eecec45e84a1d231416c6a521779935f140a35148cfa5839668cffa350e159e9a6d50e19c8ae70c8888b8216f1ce668da9aa0f62364f7259a06a8146f7

Download Submit
memory/3548-22-0x0000000010000000-0x000000001001D000-memory.dmp

Filesize
116KB

Download
memory/3548-23-0x0000000010000000-0x000000001001D000-memory.dmp

Filesize
116KB

Download
memory/3548-25-0x0000000010002000-0x0000000010004000-memory.dmp

Filesize
8KB

Download
memory/3548-26-0x0000000010000000-0x000000001001D000-memory.dmp

Filesize
116KB

Download
memory/4516-0-0x0000000000402000-0x0000000000404000-memory.dmp

Filesize
8KB

Download
memory/4516-1-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/4516-2-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/4516-12-0x0000000000402000-0x0000000000404000-memory.dmp

Filesize
8KB

Download
memory/4516-14-0x0000000010000000-0x000000001001D000-memory.dmp

Filesize
116KB

Download