Analysis Overview
SHA256
fcb24a9cb3150900c86e239ddf537543f7a3e92d01da38f6ffd4106aecd7e29d
Threat Level: Shows suspicious behavior
The file 8129f5c2ea12bcdb5692e51836a42e04_JaffaCakes118 was found to be: Shows suspicious behavior.
Malicious Activity Summary
Deletes itself
Checks computer location settings
Executes dropped EXE
Adds Run key to start application
Drops file in System32 directory
Enumerates physical storage devices
Unsigned PE
Modifies registry class
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-29 15:11
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-29 15:11
Reported
2024-05-29 15:14
Platform
win7-20240508-en
Max time kernel
150s
Max time network
121s
Command Line
Signatures
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WScript.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\kkaaya.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ = "C:\\Windows\\system32\\kkaaya.exe" | C:\Users\Admin\AppData\Local\Temp\8129f5c2ea12bcdb5692e51836a42e04_JaffaCakes118.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\kkaaya.exe | C:\Users\Admin\AppData\Local\Temp\8129f5c2ea12bcdb5692e51836a42e04_JaffaCakes118.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\kkaaya.exe | C:\Users\Admin\AppData\Local\Temp\8129f5c2ea12bcdb5692e51836a42e04_JaffaCakes118.exe | N/A |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1384 wrote to memory of 2356 | N/A | C:\Users\Admin\AppData\Local\Temp\8129f5c2ea12bcdb5692e51836a42e04_JaffaCakes118.exe | C:\Windows\SysWOW64\WScript.exe |
| PID 1384 wrote to memory of 2356 | N/A | C:\Users\Admin\AppData\Local\Temp\8129f5c2ea12bcdb5692e51836a42e04_JaffaCakes118.exe | C:\Windows\SysWOW64\WScript.exe |
| PID 1384 wrote to memory of 2356 | N/A | C:\Users\Admin\AppData\Local\Temp\8129f5c2ea12bcdb5692e51836a42e04_JaffaCakes118.exe | C:\Windows\SysWOW64\WScript.exe |
| PID 1384 wrote to memory of 2356 | N/A | C:\Users\Admin\AppData\Local\Temp\8129f5c2ea12bcdb5692e51836a42e04_JaffaCakes118.exe | C:\Windows\SysWOW64\WScript.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\8129f5c2ea12bcdb5692e51836a42e04_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\8129f5c2ea12bcdb5692e51836a42e04_JaffaCakes118.exe"
C:\Windows\SysWOW64\kkaaya.exe
C:\Windows\SysWOW64\kkaaya.exe
C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\4481.vbs"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | jian4741050.f3322.net | udp |
Files
C:\Windows\SysWOW64\kkaaya.exe
| MD5 | 8129f5c2ea12bcdb5692e51836a42e04 |
| SHA1 | 3786c64ddaba900425149737008311d61bc15498 |
| SHA256 | fcb24a9cb3150900c86e239ddf537543f7a3e92d01da38f6ffd4106aecd7e29d |
| SHA512 | 40eb6b8924ab396376d36dc7c8c0d09a0f6e3bb56b548020ec9f9490e27db88d9da7cbe20f8e69ef105b80948807300feb069692751934da6bc4d10b7a2369d8 |
C:\4481.vbs
| MD5 | 94886278d0f286b4386d17fd4a380edc |
| SHA1 | 36fb8ccc12c010cc9ddbeacef91b1b5fc3f92f40 |
| SHA256 | 3f2ac0f1ff88f7e493c78edc7d4090b248177c0643ee92c128e2160642ede786 |
| SHA512 | ac87d89a1ce72236bebe791c5af9f03e2775ca38e894bffc43a4bd10fa06f0d2f11d5d062757039d2708689c6903d3b8cb272e7990469428cf07a67504b4f031 |
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-29 15:11
Reported
2024-05-29 15:14
Platform
win10v2004-20240426-en
Max time kernel
150s
Max time network
133s
Command Line
Signatures
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\8129f5c2ea12bcdb5692e51836a42e04_JaffaCakes118.exe | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WScript.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\cugcue.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ = "C:\\Windows\\system32\\cugcue.exe" | C:\Users\Admin\AppData\Local\Temp\8129f5c2ea12bcdb5692e51836a42e04_JaffaCakes118.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\cugcue.exe | C:\Users\Admin\AppData\Local\Temp\8129f5c2ea12bcdb5692e51836a42e04_JaffaCakes118.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\cugcue.exe | C:\Users\Admin\AppData\Local\Temp\8129f5c2ea12bcdb5692e51836a42e04_JaffaCakes118.exe | N/A |
Enumerates physical storage devices
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000_Classes\Local Settings | C:\Users\Admin\AppData\Local\Temp\8129f5c2ea12bcdb5692e51836a42e04_JaffaCakes118.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4708 wrote to memory of 2360 | N/A | C:\Users\Admin\AppData\Local\Temp\8129f5c2ea12bcdb5692e51836a42e04_JaffaCakes118.exe | C:\Windows\SysWOW64\WScript.exe |
| PID 4708 wrote to memory of 2360 | N/A | C:\Users\Admin\AppData\Local\Temp\8129f5c2ea12bcdb5692e51836a42e04_JaffaCakes118.exe | C:\Windows\SysWOW64\WScript.exe |
| PID 4708 wrote to memory of 2360 | N/A | C:\Users\Admin\AppData\Local\Temp\8129f5c2ea12bcdb5692e51836a42e04_JaffaCakes118.exe | C:\Windows\SysWOW64\WScript.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\8129f5c2ea12bcdb5692e51836a42e04_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\8129f5c2ea12bcdb5692e51836a42e04_JaffaCakes118.exe"
C:\Windows\SysWOW64\cugcue.exe
C:\Windows\SysWOW64\cugcue.exe
C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\8065.vbs"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 68.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | jian4741050.f3322.net | udp |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 203.107.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | jian4741050.f3322.net | udp |
Files
C:\Windows\SysWOW64\cugcue.exe
| MD5 | 8129f5c2ea12bcdb5692e51836a42e04 |
| SHA1 | 3786c64ddaba900425149737008311d61bc15498 |
| SHA256 | fcb24a9cb3150900c86e239ddf537543f7a3e92d01da38f6ffd4106aecd7e29d |
| SHA512 | 40eb6b8924ab396376d36dc7c8c0d09a0f6e3bb56b548020ec9f9490e27db88d9da7cbe20f8e69ef105b80948807300feb069692751934da6bc4d10b7a2369d8 |
C:\8065.vbs
| MD5 | 94886278d0f286b4386d17fd4a380edc |
| SHA1 | 36fb8ccc12c010cc9ddbeacef91b1b5fc3f92f40 |
| SHA256 | 3f2ac0f1ff88f7e493c78edc7d4090b248177c0643ee92c128e2160642ede786 |
| SHA512 | ac87d89a1ce72236bebe791c5af9f03e2775ca38e894bffc43a4bd10fa06f0d2f11d5d062757039d2708689c6903d3b8cb272e7990469428cf07a67504b4f031 |