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Analysis
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max time kernel
119s -
max time network
119s -
platform
windows7_x64 -
resource
win7-20240708-en -
resource tags
arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system -
submitted
22/08/2024, 14:23
Behavioral task
behavioral1
Sample
b7fae214f571d50f16835a9c56453891_JaffaCakes118.dll
Resource
win7-20240708-en
General
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Target
b7fae214f571d50f16835a9c56453891_JaffaCakes118.dll
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Size
95KB
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MD5
b7fae214f571d50f16835a9c56453891
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SHA1
43b0a3378a194b22854d62d11d0f0f425dbc02f6
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SHA256
11c9eb8f70bbfc1ee721330f71b81a15bb74704d9b86d92474712ec4b4f9a70c
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SHA512
0e21f7c298555820a6258f051b5546566553611fcddb1222e44fc2caabda1f0560fbc12fb96339117bc2fca02f516ee3ae1867345feb8de55a53658bf48d6a25
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SSDEEP
1536:0Yvynn+A2Vd+Kne4OKutxZL4Qgj+ZxlmlS0Ot4lPsUCpLCe+4UoOv/ggvMDxOLFI:hv4+AY+aeim5HZDmS0OSlPsHwD3ggvMz
Malware Config
Signatures
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resource yara_rule behavioral1/memory/1040-0-0x00000000003A0000-0x00000000003DC000-memory.dmp upx -
Installs/modifies Browser Helper Object 2 TTPs 1 IoCs
BHOs are DLL modules which act as plugins for Internet Explorer.
description ioc Process Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{CD35E3B9-73EE-4FAB-A52D-B0119CF13719} regsvr32.exe -
System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language regsvr32.exe -
Modifies registry class 6 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CD35E3B9-73EE-4FAB-A52D-B0119CF13719} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CD35E3B9-73EE-4FAB-A52D-B0119CF13719}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\b7fae214f571d50f16835a9c56453891_JaffaCakes118.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CD35E3B9-73EE-4FAB-A52D-B0119CF13719}\InprocServer32\ThreadingModel = "apartment" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CD35E3B9-73EE-4FAB-A52D-B0119CF13719}\InprocServer32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID regsvr32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 1288 wrote to memory of 1040 1288 regsvr32.exe 28 PID 1288 wrote to memory of 1040 1288 regsvr32.exe 28 PID 1288 wrote to memory of 1040 1288 regsvr32.exe 28 PID 1288 wrote to memory of 1040 1288 regsvr32.exe 28 PID 1288 wrote to memory of 1040 1288 regsvr32.exe 28 PID 1288 wrote to memory of 1040 1288 regsvr32.exe 28 PID 1288 wrote to memory of 1040 1288 regsvr32.exe 28
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\b7fae214f571d50f16835a9c56453891_JaffaCakes118.dll1⤵
- Suspicious use of WriteProcessMemory
PID:1288 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\b7fae214f571d50f16835a9c56453891_JaffaCakes118.dll2⤵
- Installs/modifies Browser Helper Object
- System Location Discovery: System Language Discovery
- Modifies registry class
PID:1040
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