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Analysis
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max time kernel
149s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
07/09/2024, 05:52
Static task
static1
Behavioral task
behavioral1
Sample
d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe
Resource
win10v2004-20240802-en
General
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Target
d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe
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Size
92KB
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MD5
d1386a15b89e14bdfcf4262857603596
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SHA1
7b008ebac861c1ba141eaff3090a3806405e6474
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SHA256
f51fc2e266418e158642a64ab4c8a7a246d90520de1e7bc119a6e8bbde989ae3
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SHA512
59f61c6fa4bc5e805097de7f70810864fec4a31cdbcdb949dad1b41930358c8fb34185e1a173619d699a7653b68f14526c50261e0b1ff4bdf5da23532f474679
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SSDEEP
768:g9/OG/Vbv2gV99m+Yhnvo29b3fnN0zsROESLkKpyB69vgW:2OGp2gTV4ZbPn2zsRO/aB69
Malware Config
Signatures
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Adds autorun key to be loaded by Explorer.exe on startup 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\uvjbclsk.dll = "{A2C3BA54-DF75-4881-8EB3-E54B26BBBBC9}" d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe -
Loads dropped DLL 1 IoCs
pid Process 3580 d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe -
Drops file in System32 directory 2 IoCs
description ioc Process File created C:\Windows\SysWOW64\uvjbclsk.tmp d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe File opened for modification C:\Windows\SysWOW64\uvjbclsk.tmp d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe -
System Location Discovery: System Language Discovery 1 TTPs 2 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 d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe -
Modifies registry class 4 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A2C3BA54-DF75-4881-8EB3-E54B26BBBBC9} d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A2C3BA54-DF75-4881-8EB3-E54B26BBBBC9}\InProcServer32 d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A2C3BA54-DF75-4881-8EB3-E54B26BBBBC9}\InProcServer32\ = "C:\\Windows\\SysWow64\\uvjbclsk.dll" d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A2C3BA54-DF75-4881-8EB3-E54B26BBBBC9}\InProcServer32\ThreadingModel = "Apartment" d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 3580 d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe 3580 d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe -
Suspicious use of SetWindowsHookEx 3 IoCs
pid Process 3580 d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe 3580 d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe 3580 d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 3580 wrote to memory of 2392 3580 d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe 95 PID 3580 wrote to memory of 2392 3580 d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe 95 PID 3580 wrote to memory of 2392 3580 d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe 95
Processes
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C:\Users\Admin\AppData\Local\Temp\d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe"1⤵
- Adds autorun key to be loaded by Explorer.exe on startup
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3580 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\F107.tmp.bat2⤵
- System Location Discovery: System Language Discovery
PID:2392
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
207B
MD5e75c78d447860e3e26de77644afc14a5
SHA1948b5d9bd43ab443de29277e2b1f11b6f3f26714
SHA256a6ef392374c076fb342f179f1acdce382ea00ec99ade81dc4812c5c42b80c3c5
SHA512d7af59a29c3c193e1d3652ec5cfa200b17bdfd5a3d4e47060eaa7077586607797a5b25a70c965f75b00b7b0dcda439b83043b268c54fd6d27e01daf1445bd4fb
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Filesize
2.4MB
MD5adaf9c03b3b8d864bef0fa612165bb7d
SHA114c61539a83bb00c7fc86f0bdd2f20c4e8c2ff5c
SHA256837ed0886223837a743ad2fb7fc0c38bf679d9cb09d554d5c48f7985eb8c2812
SHA5123d96ce52fd64224e495878ed6be6f6eeb4fea33aad6904cd2b841d64f96e787c1a5fb628cd8ab7b500895f5c1fbf2b3cb36d388aa992cc2fa93023a303f95d24