Analysis Overview
SHA256
8943224ca8d3ddad137a3e373e70552ff5cd4c61e4413fbdb1b8c19650517b74
Threat Level: Shows suspicious behavior
The file e35cd81c07c91694adcdc89a7cd16345_JaffaCakes118 was found to be: Shows suspicious behavior.
Malicious Activity Summary
Loads dropped DLL
Adds Run key to start application
Drops file in System32 directory
Unsigned PE
Suspicious use of SetWindowsHookEx
Suspicious behavior: RenamesItself
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Modifies registry class
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-06 21:49
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-06 21:49
Reported
2024-04-06 21:52
Platform
win10v2004-20240226-en
Max time kernel
150s
Max time network
148s
Command Line
Signatures
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\MSServer = "rundll32.exe C:\\Windows\\system32\\qoMfdcyV.dll,#1" | C:\Windows\SysWOW64\rundll32.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\qoMfdcyV.dll | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\qoMfdcyV.dll | C:\Windows\SysWOW64\rundll32.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{DF84DCA5-688B-4C23-8363-3416AC563015}\InprocServer32 | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{DF84DCA5-688B-4C23-8363-3416AC563015}\InprocServer32\ = "C:\\Windows\\SysWow64\\qoMfdcyV.dll" | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{DF84DCA5-688B-4C23-8363-3416AC563015}\InprocServer32\ThreadingModel = "Both" | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{DF84DCA5-688B-4C23-8363-3416AC563015} | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: RenamesItself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1288 wrote to memory of 4544 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1288 wrote to memory of 4544 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1288 wrote to memory of 4544 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 4544 wrote to memory of 632 | N/A | C:\Windows\SysWOW64\rundll32.exe | C:\Windows\system32\winlogon.exe |
| PID 4544 wrote to memory of 3372 | N/A | C:\Windows\SysWOW64\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 4544 wrote to memory of 3372 | N/A | C:\Windows\SysWOW64\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 4544 wrote to memory of 3372 | N/A | C:\Windows\SysWOW64\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
Processes
C:\Windows\system32\winlogon.exe
winlogon.exe
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e35cd81c07c91694adcdc89a7cd16345_JaffaCakes118.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e35cd81c07c91694adcdc89a7cd16345_JaffaCakes118.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Windows\system32\qoMfdcyV.dll,a
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3736 --field-trial-handle=2232,i,11267738607351977302,107266978269557304,262144 --variations-seed-version /prefetch:8
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 22.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.150.49.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 14.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 140.71.91.104.in-addr.arpa | udp |
Files
memory/4544-0-0x0000000010000000-0x0000000010010000-memory.dmp
memory/4544-1-0x00000000008D0000-0x00000000008D6000-memory.dmp
C:\Windows\SysWOW64\qoMfdcyV.dll
| MD5 | e35cd81c07c91694adcdc89a7cd16345 |
| SHA1 | ee71dfa3d1f47eebd382057448f56fa17fd5fbcd |
| SHA256 | 8943224ca8d3ddad137a3e373e70552ff5cd4c61e4413fbdb1b8c19650517b74 |
| SHA512 | 1f4e17621228ee436503513f32c8852b0a5d71a5370671016193d718919a083afcbbdac37dc70d8cc562f4d3d0da3700c17575304622177325846bd8cc6d5914 |
memory/4544-8-0x0000000000BD0000-0x0000000000BE0000-memory.dmp
memory/4544-9-0x0000000000BE0000-0x0000000000BE6000-memory.dmp
memory/4544-10-0x0000000010000000-0x0000000010010000-memory.dmp
memory/4544-14-0x00000000008D0000-0x00000000008D6000-memory.dmp
memory/3372-17-0x0000000010000000-0x0000000010010000-memory.dmp
memory/3372-18-0x00000000010A0000-0x00000000010A6000-memory.dmp
memory/3372-19-0x0000000010000000-0x0000000010010000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-06 21:49
Reported
2024-04-06 21:52
Platform
win7-20240319-en
Max time kernel
118s
Max time network
121s
Command Line
Signatures
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2060 wrote to memory of 2840 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2060 wrote to memory of 2840 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2060 wrote to memory of 2840 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2060 wrote to memory of 2840 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2060 wrote to memory of 2840 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2060 wrote to memory of 2840 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2060 wrote to memory of 2840 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e35cd81c07c91694adcdc89a7cd16345_JaffaCakes118.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e35cd81c07c91694adcdc89a7cd16345_JaffaCakes118.dll,#1