60444bdb0f82de3701a65256f4fb6ee1a9476b4e3981e2e77c615c066fe9f916

Analysis

max time kernel
150s
max time network
132s
platform
windows10-2004_x64
resource
win10v2004-20240730-en
resource tags

arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-x64system
submitted
01-08-2024 21:02

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General

Target

81c3de915aeea2f5c00e697beee2b6d6_JaffaCakes118.exe
Size

61KB
MD5

81c3de915aeea2f5c00e697beee2b6d6
SHA1

573b170236042b8264f66a952e85236e3748c0d4
SHA256

60444bdb0f82de3701a65256f4fb6ee1a9476b4e3981e2e77c615c066fe9f916
SHA512

843979ca3155ad4255633a8419475a5e0a2d3102a6acc17618f97fc06f20207ba91fa9bcf398360d104f9183f4ceef3a2e2e4ad045e944bfc0a405d321c6ac44
SSDEEP

1536:w/2YdvcD6ITK/WxJ5tDCXJoW/dn028FN9+B/s1UfSXX:5cv+6IW/W6/9laN9+ByU6XX

Score

7^/10

discovery persistence upx

Malware Config

Signatures

Loads dropped DLL 2 IoCs

pid	Process
620	81c3de915aeea2f5c00e697beee2b6d6_JaffaCakes118.exe
4564	rundll32.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/620-1-0x0000000000400000-0x000000000041B000-memory.dmp	upx
behavioral2/memory/620-12-0x0000000010000000-0x000000001001C000-memory.dmp	upx
behavioral2/memory/4564-21-0x0000000010000000-0x000000001001C000-memory.dmp	upx
behavioral2/memory/4564-23-0x0000000010000000-0x000000001001C000-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\\byXNhiHa.dll,#1"	rundll32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\rqRLbcYO.dll	81c3de915aeea2f5c00e697beee2b6d6_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\rqRLbcYO.dll	81c3de915aeea2f5c00e697beee2b6d6_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\byXNhiHa.dll	81c3de915aeea2f5c00e697beee2b6d6_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\byXNhiHa.dll	81c3de915aeea2f5c00e697beee2b6d6_JaffaCakes118.exe

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	81c3de915aeea2f5c00e697beee2b6d6_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\{7DB094B1-C3AA-487C-B75E-CB9654E1A6B4}	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7DB094B1-C3AA-487C-B75E-CB9654E1A6B4}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7DB094B1-C3AA-487C-B75E-CB9654E1A6B4}\InprocServer32\ = "C:\\Windows\\SysWow64\\byXNhiHa.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7DB094B1-C3AA-487C-B75E-CB9654E1A6B4}\InprocServer32\ThreadingModel = "Both"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
620	81c3de915aeea2f5c00e697beee2b6d6_JaffaCakes118.exe
620	81c3de915aeea2f5c00e697beee2b6d6_JaffaCakes118.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe
4564	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	620	81c3de915aeea2f5c00e697beee2b6d6_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
620	81c3de915aeea2f5c00e697beee2b6d6_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 620 wrote to memory of 624	620	81c3de915aeea2f5c00e697beee2b6d6_JaffaCakes118.exe	5
PID 620 wrote to memory of 4564	620	81c3de915aeea2f5c00e697beee2b6d6_JaffaCakes118.exe	88
PID 620 wrote to memory of 4564	620	81c3de915aeea2f5c00e697beee2b6d6_JaffaCakes118.exe	88
PID 620 wrote to memory of 4564	620	81c3de915aeea2f5c00e697beee2b6d6_JaffaCakes118.exe	88
PID 620 wrote to memory of 4764	620	81c3de915aeea2f5c00e697beee2b6d6_JaffaCakes118.exe	89
PID 620 wrote to memory of 4764	620	81c3de915aeea2f5c00e697beee2b6d6_JaffaCakes118.exe	89
PID 620 wrote to memory of 4764	620	81c3de915aeea2f5c00e697beee2b6d6_JaffaCakes118.exe	89

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:624

C:\Users\Admin\AppData\Local\Temp\81c3de915aeea2f5c00e697beee2b6d6_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\81c3de915aeea2f5c00e697beee2b6d6_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:620
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Windows\system32\byXNhiHa.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:4564
- 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\81c3de915aeea2f5c00e697beee2b6d6_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4764

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\rqRLbcYO.dll

Filesize
38KB

MD5
3ccbd1906fed51faa972bb96aff7481f

SHA1
24981b88d9be1a7d464fba80427022ac8d24b534

SHA256
c68568a865a0be6ec2f8e0ea7fa86b9e054bf5ccecf099644076da8a83d26a40

SHA512
506c73325899e1a5c4da29134899838d1cf06d2875c8174e12a204ae802df9038d4f2a852751e066e8be2d9d1153f3bf93f1410ec399db7246700784cbdfa224

Download Submit
memory/620-1-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/620-0-0x0000000000403000-0x0000000000405000-memory.dmp

Filesize
8KB

Download
memory/620-12-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/4564-20-0x0000000010002000-0x0000000010004000-memory.dmp

Filesize
8KB

Download
memory/4564-21-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/4564-23-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download