Analysis
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max time kernel
121s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20240611-en -
resource tags
arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system -
submitted
02-07-2024 14:28
Static task
static1
Behavioral task
behavioral1
Sample
1fa36c94386d84c798ba238f89190429_JaffaCakes118.exe
Resource
win7-20240611-en
Behavioral task
behavioral2
Sample
1fa36c94386d84c798ba238f89190429_JaffaCakes118.exe
Resource
win10v2004-20240508-en
General
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Target
1fa36c94386d84c798ba238f89190429_JaffaCakes118.exe
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Size
66KB
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MD5
1fa36c94386d84c798ba238f89190429
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SHA1
221e1fb1987c68969729b6b19e96abdc066865e7
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SHA256
de0df51c6a65c8ae868963322048540d50c101d0e2d1845ed060a8d9d3e187d8
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SHA512
c6c638e3c598d85b64a37e4072239d938d9dcb8853bc351604edc39e0f90abbfa9f96c3f106c7d1b5f39c9911371db1726549cde8d11bcadef4cd0b52be0ee4b
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SSDEEP
1536:9jEky1ITCyI+ymv4/5CVmMa5zLTTyHvxxzJfnNXTG:NEnITCyTdAxCjtHvjzJfBq
Malware Config
Extracted
metasploit
encoder/call4_dword_xor
Signatures
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MetaSploit
Detected malicious payload which is part of the Metasploit Framework, likely generated with msfvenom or similar.
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Deletes itself 1 IoCs
Processes:
cmd.exepid process 1720 cmd.exe -
Executes dropped EXE 1 IoCs
Processes:
asr_krlpr.exepid process 1996 asr_krlpr.exe -
Loads dropped DLL 2 IoCs
Processes:
1fa36c94386d84c798ba238f89190429_JaffaCakes118.exepid process 2312 1fa36c94386d84c798ba238f89190429_JaffaCakes118.exe 2312 1fa36c94386d84c798ba238f89190429_JaffaCakes118.exe -
Adds Run key to start application 2 TTPs 3 IoCs
Processes:
1fa36c94386d84c798ba238f89190429_JaffaCakes118.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Activation Service = "asr_krlpr.exe" 1fa36c94386d84c798ba238f89190429_JaffaCakes118.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunServices\Windows Activation Service = "asr_krlpr.exe" 1fa36c94386d84c798ba238f89190429_JaffaCakes118.exe Set value (str) \REGISTRY\USER\S-1-5-21-1340930862-1405011213-2821322012-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Activation Service = "asr_krlpr.exe" 1fa36c94386d84c798ba238f89190429_JaffaCakes118.exe -
Drops file in System32 directory 2 IoCs
Processes:
1fa36c94386d84c798ba238f89190429_JaffaCakes118.exedescription ioc process File opened for modification C:\Windows\SysWOW64\asr_krlpr.exe 1fa36c94386d84c798ba238f89190429_JaffaCakes118.exe File created C:\Windows\SysWOW64\asr_krlpr.exe 1fa36c94386d84c798ba238f89190429_JaffaCakes118.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of AdjustPrivilegeToken 5 IoCs
Processes:
1fa36c94386d84c798ba238f89190429_JaffaCakes118.exeasr_krlpr.exedescription pid process Token: 33 2312 1fa36c94386d84c798ba238f89190429_JaffaCakes118.exe Token: SeIncBasePriorityPrivilege 2312 1fa36c94386d84c798ba238f89190429_JaffaCakes118.exe Token: SeIncBasePriorityPrivilege 2312 1fa36c94386d84c798ba238f89190429_JaffaCakes118.exe Token: 33 1996 asr_krlpr.exe Token: SeIncBasePriorityPrivilege 1996 asr_krlpr.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
1fa36c94386d84c798ba238f89190429_JaffaCakes118.exedescription pid process target process PID 2312 wrote to memory of 1996 2312 1fa36c94386d84c798ba238f89190429_JaffaCakes118.exe asr_krlpr.exe PID 2312 wrote to memory of 1996 2312 1fa36c94386d84c798ba238f89190429_JaffaCakes118.exe asr_krlpr.exe PID 2312 wrote to memory of 1996 2312 1fa36c94386d84c798ba238f89190429_JaffaCakes118.exe asr_krlpr.exe PID 2312 wrote to memory of 1996 2312 1fa36c94386d84c798ba238f89190429_JaffaCakes118.exe asr_krlpr.exe PID 2312 wrote to memory of 1720 2312 1fa36c94386d84c798ba238f89190429_JaffaCakes118.exe cmd.exe PID 2312 wrote to memory of 1720 2312 1fa36c94386d84c798ba238f89190429_JaffaCakes118.exe cmd.exe PID 2312 wrote to memory of 1720 2312 1fa36c94386d84c798ba238f89190429_JaffaCakes118.exe cmd.exe PID 2312 wrote to memory of 1720 2312 1fa36c94386d84c798ba238f89190429_JaffaCakes118.exe cmd.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\1fa36c94386d84c798ba238f89190429_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\1fa36c94386d84c798ba238f89190429_JaffaCakes118.exe"1⤵
- Loads dropped DLL
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\asr_krlpr.exeC:\Windows\system32\asr_krlpr.exe2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\1FA36C~1.EXE > nul2⤵
- Deletes itself
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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\Windows\SysWOW64\asr_krlpr.exeFilesize
66KB
MD51fa36c94386d84c798ba238f89190429
SHA1221e1fb1987c68969729b6b19e96abdc066865e7
SHA256de0df51c6a65c8ae868963322048540d50c101d0e2d1845ed060a8d9d3e187d8
SHA512c6c638e3c598d85b64a37e4072239d938d9dcb8853bc351604edc39e0f90abbfa9f96c3f106c7d1b5f39c9911371db1726549cde8d11bcadef4cd0b52be0ee4b
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memory/1996-13-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB
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memory/1996-14-0x00000000002A0000-0x00000000002A2000-memory.dmpFilesize
8KB
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memory/1996-16-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB
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memory/2312-0-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB
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memory/2312-1-0x00000000001B0000-0x00000000001B2000-memory.dmpFilesize
8KB
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memory/2312-6-0x00000000023C0000-0x000000000240C000-memory.dmpFilesize
304KB
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memory/2312-17-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB