Analysis
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max time kernel
141s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
13-08-2024 16:01
Behavioral task
behavioral1
Sample
93c72d6d182e00b4730f18d1a053b294_JaffaCakes118.exe
Resource
win7-20240704-en
Behavioral task
behavioral2
Sample
93c72d6d182e00b4730f18d1a053b294_JaffaCakes118.exe
Resource
win10v2004-20240802-en
General
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Target
93c72d6d182e00b4730f18d1a053b294_JaffaCakes118.exe
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Size
69KB
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MD5
93c72d6d182e00b4730f18d1a053b294
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SHA1
e727d9288624e3c13ce24061941aa22353f4b5ec
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SHA256
a1d8130956aa19401c49e2485717fd34e467821f3ae8c01250dd8ce81cbbf0c3
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SHA512
310b493088af720a61111ab65a9d3a29819e83aacb6152f7e4423f31b4886ac3e19258f5df4ade0f6cb7c607c44f9cd3ff00aa1f2d64095db33e8d04764e190a
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SSDEEP
1536:7TaRCB+ilTAzxT3WkMSupOcFDK2FQZhuhM6xST7HsCJwEAl/JFpcuS:7mils9WkMSwOQDvCCbjJ/JH5
Malware Config
Signatures
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Possible privilege escalation attempt 2 IoCs
Processes:
takeown.exeicacls.exepid process 2424 takeown.exe 4196 icacls.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
93c72d6d182e00b4730f18d1a053b294_JaffaCakes118.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation 93c72d6d182e00b4730f18d1a053b294_JaffaCakes118.exe -
Deletes itself 1 IoCs
Processes:
regsvr32.exepid process 1992 regsvr32.exe -
Loads dropped DLL 1 IoCs
Processes:
regsvr32.exepid process 1992 regsvr32.exe -
Modifies file permissions 1 TTPs 2 IoCs
Processes:
icacls.exetakeown.exepid process 4196 icacls.exe 2424 takeown.exe -
Processes:
resource yara_rule behavioral2/memory/1612-0-0x0000000000400000-0x0000000000422000-memory.dmp upx behavioral2/memory/1612-3-0x0000000000400000-0x0000000000422000-memory.dmp upx -
File and Directory Permissions Modification: Windows File and Directory Permissions Modification 1 TTPs
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Drops file in System32 directory 3 IoCs
Processes:
regsvr32.exedescription ioc process File opened for modification C:\Windows\SysWOW64\apa.dll regsvr32.exe File created C:\Windows\SysWOW64\rpcss.dll regsvr32.exe File opened for modification C:\Windows\SysWOW64\rpcss.dll regsvr32.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 4 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
93c72d6d182e00b4730f18d1a053b294_JaffaCakes118.exeregsvr32.exetakeown.exeicacls.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 93c72d6d182e00b4730f18d1a053b294_JaffaCakes118.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language regsvr32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language takeown.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language icacls.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
regsvr32.exepid process 1992 regsvr32.exe 1992 regsvr32.exe 1992 regsvr32.exe 1992 regsvr32.exe 1992 regsvr32.exe 1992 regsvr32.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
regsvr32.exetakeown.exedescription pid process Token: SeDebugPrivilege 1992 regsvr32.exe Token: SeTakeOwnershipPrivilege 2424 takeown.exe -
Suspicious use of WriteProcessMemory 10 IoCs
Processes:
93c72d6d182e00b4730f18d1a053b294_JaffaCakes118.exeregsvr32.exedescription pid process target process PID 1612 wrote to memory of 1992 1612 93c72d6d182e00b4730f18d1a053b294_JaffaCakes118.exe regsvr32.exe PID 1612 wrote to memory of 1992 1612 93c72d6d182e00b4730f18d1a053b294_JaffaCakes118.exe regsvr32.exe PID 1612 wrote to memory of 1992 1612 93c72d6d182e00b4730f18d1a053b294_JaffaCakes118.exe regsvr32.exe PID 1992 wrote to memory of 2424 1992 regsvr32.exe takeown.exe PID 1992 wrote to memory of 2424 1992 regsvr32.exe takeown.exe PID 1992 wrote to memory of 2424 1992 regsvr32.exe takeown.exe PID 1992 wrote to memory of 4196 1992 regsvr32.exe icacls.exe PID 1992 wrote to memory of 4196 1992 regsvr32.exe icacls.exe PID 1992 wrote to memory of 4196 1992 regsvr32.exe icacls.exe PID 1992 wrote to memory of 792 1992 regsvr32.exe svchost.exe
Processes
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k DcomLaunch -p1⤵PID:792
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C:\Users\Admin\AppData\Local\Temp\93c72d6d182e00b4730f18d1a053b294_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\93c72d6d182e00b4730f18d1a053b294_JaffaCakes118.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1612 -
C:\Windows\SysWOW64\regsvr32.exe"C:\Windows\system32\regsvr32.exe" /s C:\Users\Admin\AppData\Local\Temp\~~e57b8b1.tmp ,C:\Users\Admin\AppData\Local\Temp\93c72d6d182e00b4730f18d1a053b294_JaffaCakes118.exe2⤵
- Deletes itself
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1992 -
C:\Windows\SysWOW64\takeown.exetakeown /f "C:\Windows\system32\rpcss.dll"3⤵
- Possible privilege escalation attempt
- Modifies file permissions
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2424
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C:\Windows\SysWOW64\icacls.exeicacls "C:\Windows\system32\rpcss.dll" /grant administrators:F3⤵
- Possible privilege escalation attempt
- Modifies file permissions
- System Location Discovery: System Language Discovery
PID:4196
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1.0MB
MD57b2ebb9d24d1600af75c60532516531c
SHA1dd9ee106110c1c5cbbf6a59fdd1e78e8612afa68
SHA256f49a6104ea865bb381afe2287fa727cccfd0f62c048b82cccced0d6af539722a
SHA51239f97f66a929ca0751152619ab13dc2a0952746fa75a6271c1f14c04354366247dbbf5029bc901fa3652b920ba960876d7906b82e1a1c56649d03c6fcb205e67