Analysis Overview
SHA256
7821c8bb398df90703947a6e5c45c0a830d3ff487e1d39e7fa34cbdd087b91bd
Threat Level: Likely malicious
The file 042cf634bc6848bdeb913e437d64e7be_JaffaCakes118 was found to be: Likely malicious.
Malicious Activity Summary
Server Software Component: Terminal Services DLL
UPX packed file
ASPack v2.12-2.42
Executes dropped EXE
Loads dropped DLL
Drops file in System32 directory
Program crash
Unsigned PE
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-22 22:35
Signatures
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-22 22:35
Reported
2024-06-22 22:37
Platform
win7-20240221-en
Max time kernel
121s
Max time network
122s
Command Line
Signatures
Server Software Component: Terminal Services DLL
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\FastUserSwitchingCompatibility\Parameters\ServiceDll = "C:\\Windows\\system32\\FastUserSwitchingCompatibility.dll" | C:\56f1038c.exe | N/A |
ASPack v2.12-2.42
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\56f1038c.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\56f1038c.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\svchost.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
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| N/A | N/A | N/A | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\FastUserSwitchingCompatibility.dll | C:\56f1038c.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\0EE604B8.tmp | C:\56f1038c.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\56f1038c.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\042cf634bc6848bdeb913e437d64e7be_JaffaCakes118.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\042cf634bc6848bdeb913e437d64e7be_JaffaCakes118.dll,#1
C:\56f1038c.exe
C:\56f1038c.exe
C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k netsvcs
Network
Files
memory/1708-0-0x0000000075320000-0x000000007535D000-memory.dmp
memory/1708-4-0x0000000075310000-0x000000007534D000-memory.dmp
memory/1708-3-0x0000000075320000-0x000000007535D000-memory.dmp
C:\56f1038c.exe
| MD5 | 6b222c20acbdc5a0919ced7d62ae127e |
| SHA1 | e5548137ef1150423b571fa0e7ceeb62c7190f56 |
| SHA256 | 582dd6d194571b1399686acd934336238108d1e18e0756223d318d552539bf5a |
| SHA512 | 97cb5023f43c91ecc3577f270c54f486fb1246970f019a88eb7e2ee77d94b2e37a85a20b70989aca85ca7c18661346f5499e46d8a069f1ef2ad4b9d0233cb815 |
memory/1708-2-0x00000000752D0000-0x000000007530D000-memory.dmp
memory/1740-12-0x0000000001120000-0x0000000001146000-memory.dmp
memory/1708-11-0x0000000000260000-0x0000000000286000-memory.dmp
memory/1708-10-0x0000000000260000-0x0000000000286000-memory.dmp
memory/1740-14-0x0000000001120000-0x0000000001146000-memory.dmp
memory/1740-13-0x0000000001120000-0x0000000001146000-memory.dmp
memory/1740-18-0x0000000077CFF000-0x0000000077D00000-memory.dmp
memory/1740-19-0x00000000776D9000-0x00000000776DB000-memory.dmp
\Windows\SysWOW64\0EE604B8.tmp
| MD5 | d9c481df51944891331899940034a2fd |
| SHA1 | 1d86eeec53bc1a4a5e28b69e3faec885dd48fdfa |
| SHA256 | e5d4623258e0c70c13ecc444f811c587e7b8191aaefef7773095d082be94737f |
| SHA512 | 3a3673a3e10d3c4aa74eb902ad3eebc9e20df739b6b5b3c58922e37271a5deff92f6a4c4c790e1e0ba2d3db3f2e920a3253fddf33250fede8aa46552ec3b427a |
memory/2644-28-0x0000000075110000-0x0000000075136000-memory.dmp
C:\Users\Infotmp.txt
| MD5 | 03b738ca70292b9d8056e11490a6c71e |
| SHA1 | b1be291c9cc934be4cb9af36a662feca28e69439 |
| SHA256 | e0b42af5cbbfac565ede2b4afb9933e90186dceaa3b1b806a6d37893b9cb1db1 |
| SHA512 | fa39f8f7f2ab2bf6a61946d2f37b1f5d63c890b4f8c9a3081d33ac02e6e77c6b16ad9b185dd4dd0bfda3262a18f85b0961127791ac6a47e2186276f6a11894ac |
memory/2644-26-0x0000000075110000-0x0000000075136000-memory.dmp
memory/2644-25-0x0000000075110000-0x0000000075136000-memory.dmp
memory/1740-31-0x0000000001120000-0x0000000001146000-memory.dmp
memory/1708-33-0x0000000075310000-0x000000007534D000-memory.dmp
memory/1708-32-0x0000000075310000-0x000000007534D000-memory.dmp
memory/1708-34-0x00000000776C0000-0x0000000077720000-memory.dmp
memory/1708-35-0x0000000000260000-0x0000000000286000-memory.dmp
memory/1708-36-0x00000000776C0000-0x0000000077720000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-22 22:35
Reported
2024-06-22 22:37
Platform
win10v2004-20240508-en
Max time kernel
93s
Max time network
94s
Command Line
Signatures
Server Software Component: Terminal Services DLL
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\FastUserSwitchingCompatibility\Parameters\ServiceDll = "C:\\Windows\\system32\\FastUserSwitchingCompatibility.dll" | C:\56f1038c.exe | N/A |
ASPack v2.12-2.42
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\56f1038c.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\svchost.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
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| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\1D660D80.tmp | C:\56f1038c.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\FastUserSwitchingCompatibility.dll | C:\56f1038c.exe | N/A |
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\rundll32.exe |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\56f1038c.exe | N/A |
| N/A | N/A | C:\56f1038c.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4372 wrote to memory of 3028 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 4372 wrote to memory of 3028 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 4372 wrote to memory of 3028 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 3028 wrote to memory of 3076 | N/A | C:\Windows\SysWOW64\rundll32.exe | C:\56f1038c.exe |
| PID 3028 wrote to memory of 3076 | N/A | C:\Windows\SysWOW64\rundll32.exe | C:\56f1038c.exe |
| PID 3028 wrote to memory of 3076 | N/A | C:\Windows\SysWOW64\rundll32.exe | C:\56f1038c.exe |
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\042cf634bc6848bdeb913e437d64e7be_JaffaCakes118.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\042cf634bc6848bdeb913e437d64e7be_JaffaCakes118.dll,#1
C:\56f1038c.exe
C:\56f1038c.exe
C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k netsvcs -s FastUserSwitchingCompatibility
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3028 -ip 3028
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3028 -s 660
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 232.168.11.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 67.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 98.58.20.217.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 31.243.111.52.in-addr.arpa | udp |
Files
memory/3028-0-0x00000000752F0000-0x000000007532D000-memory.dmp
C:\56f1038c.exe
| MD5 | 6b222c20acbdc5a0919ced7d62ae127e |
| SHA1 | e5548137ef1150423b571fa0e7ceeb62c7190f56 |
| SHA256 | 582dd6d194571b1399686acd934336238108d1e18e0756223d318d552539bf5a |
| SHA512 | 97cb5023f43c91ecc3577f270c54f486fb1246970f019a88eb7e2ee77d94b2e37a85a20b70989aca85ca7c18661346f5499e46d8a069f1ef2ad4b9d0233cb815 |
memory/3076-5-0x00000000006F0000-0x0000000000716000-memory.dmp
memory/3076-7-0x00000000006F0000-0x0000000000716000-memory.dmp
memory/3076-6-0x00000000006F0000-0x0000000000716000-memory.dmp
memory/3076-12-0x0000000076B5C000-0x0000000076B5D000-memory.dmp
memory/3076-11-0x00000000778C2000-0x00000000778C3000-memory.dmp
\??\c:\windows\SysWOW64\fastuserswitchingcompatibility.dll
| MD5 | d9c481df51944891331899940034a2fd |
| SHA1 | 1d86eeec53bc1a4a5e28b69e3faec885dd48fdfa |
| SHA256 | e5d4623258e0c70c13ecc444f811c587e7b8191aaefef7773095d082be94737f |
| SHA512 | 3a3673a3e10d3c4aa74eb902ad3eebc9e20df739b6b5b3c58922e37271a5deff92f6a4c4c790e1e0ba2d3db3f2e920a3253fddf33250fede8aa46552ec3b427a |
memory/3668-16-0x00000000750C0000-0x00000000750E6000-memory.dmp
memory/3668-17-0x00000000750C0000-0x00000000750E6000-memory.dmp
memory/3668-18-0x00000000750C0000-0x00000000750E6000-memory.dmp
memory/3028-20-0x00000000752F0000-0x000000007532D000-memory.dmp
memory/3668-24-0x00000000750C0000-0x00000000750E6000-memory.dmp
memory/3028-22-0x00000000752F0000-0x000000007532D000-memory.dmp
memory/3076-21-0x00000000006F0000-0x0000000000716000-memory.dmp
C:\Users\Infotmp.txt
| MD5 | a19c413c06e112146189e0d8f0fe0270 |
| SHA1 | 04b2c091267d74bf4a9baf1cd8dbdf07fdd2eed4 |
| SHA256 | ac0ad3dadc2453791c5ed5d247fa6f2d404913868b896a1c0769c576b3db3af1 |
| SHA512 | cb73b1af078e7185f8dfcee4f2fc32ff4adb0c189ed969b41866794c3fee7f6330e110d2a5b5914f8ffdb38c9b3bed45c422dabc320efe84d2e7bcd59a7cfbab |