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Analysis
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max time kernel
145s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20240215-en -
resource tags
arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system -
submitted
09/05/2024, 13:50
Behavioral task
behavioral1
Sample
2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe
Resource
win7-20240215-en
Behavioral task
behavioral2
Sample
2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe
Resource
win10v2004-20240508-en
General
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Target
2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe
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Size
909KB
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MD5
2a413fc28008906ff64b62daf1ea0ea7
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SHA1
efcf0308d29f9a821b32cb4e538b06a54d59b018
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SHA256
3a81dde4b638df30022d899c14177578688b06744f9bfbfc07071d653986e476
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SHA512
808a88389e51e3acb333890c5c260946efc99600cc123c142a63c706958444426b07adb5ec40c0443584ed20934df6c9be3e98b190166841758248fa1fb89d4f
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SSDEEP
24576:ZMMpXS0hN0V0HSSGB2uJ2s4otqFCJrW9FqvSbqsHasgXhFHDAGtlRXZ+CP63n0Nw:Kwi0L0qnTv
Malware Config
Signatures
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Modifies WinLogon for persistence 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe HelpMe.exe" 2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe HelpMe.exe" HelpMe.exe -
Renames multiple (91) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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resource yara_rule behavioral1/files/0x00080000000122bf-2.dat aspack_v212_v242 behavioral1/files/0x000800000001502c-38.dat aspack_v212_v242 behavioral1/files/0x0001000000000026-55.dat aspack_v212_v242 -
Drops startup file 3 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk 2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk HelpMe.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk 2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe -
Executes dropped EXE 1 IoCs
pid Process 2936 HelpMe.exe -
Loads dropped DLL 2 IoCs
pid Process 1876 2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe 1876 2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe -
Enumerates connected drives 3 TTPs 46 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\B: 2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe File opened (read-only) \??\R: 2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe File opened (read-only) \??\K: HelpMe.exe File opened (read-only) \??\Q: HelpMe.exe File opened (read-only) \??\P: 2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe File opened (read-only) \??\H: HelpMe.exe File opened (read-only) \??\P: HelpMe.exe File opened (read-only) \??\R: HelpMe.exe File opened (read-only) \??\X: HelpMe.exe File opened (read-only) \??\O: HelpMe.exe File opened (read-only) \??\M: 2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe File opened (read-only) \??\S: 2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe File opened (read-only) \??\W: 2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe File opened (read-only) \??\X: 2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe File opened (read-only) \??\Y: 2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe File opened (read-only) \??\B: HelpMe.exe File opened (read-only) \??\I: HelpMe.exe File opened (read-only) \??\U: HelpMe.exe File opened (read-only) \??\U: 2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe File opened (read-only) \??\E: HelpMe.exe File opened (read-only) \??\L: HelpMe.exe File opened (read-only) \??\Z: HelpMe.exe File opened (read-only) \??\S: HelpMe.exe File opened (read-only) \??\E: 2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe File opened (read-only) \??\H: 2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe File opened (read-only) \??\O: 2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe File opened (read-only) \??\T: 2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe File opened (read-only) \??\V: 2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe File opened (read-only) \??\J: HelpMe.exe File opened (read-only) \??\N: HelpMe.exe File opened (read-only) \??\V: HelpMe.exe File opened (read-only) \??\W: HelpMe.exe File opened (read-only) \??\G: 2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe File opened (read-only) \??\I: 2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe File opened (read-only) \??\J: 2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe File opened (read-only) \??\K: 2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe File opened (read-only) \??\A: HelpMe.exe File opened (read-only) \??\T: HelpMe.exe File opened (read-only) \??\Q: 2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe File opened (read-only) \??\Z: 2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe File opened (read-only) \??\G: HelpMe.exe File opened (read-only) \??\Y: HelpMe.exe File opened (read-only) \??\A: 2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe File opened (read-only) \??\L: 2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe File opened (read-only) \??\N: 2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe File opened (read-only) \??\M: HelpMe.exe -
Drops autorun.inf file 1 TTPs 3 IoCs
Malware can abuse Windows Autorun to spread further via attached volumes.
description ioc Process File opened for modification C:\AUTORUN.INF 2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe File opened for modification F:\AUTORUN.INF HelpMe.exe File opened for modification F:\AUTORUN.INF 2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe -
Drops file in System32 directory 2 IoCs
description ioc Process File created C:\Windows\SysWOW64\HelpMe.exe HelpMe.exe File created C:\Windows\SysWOW64\HelpMe.exe 2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1876 wrote to memory of 2936 1876 2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe 28 PID 1876 wrote to memory of 2936 1876 2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe 28 PID 1876 wrote to memory of 2936 1876 2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe 28 PID 1876 wrote to memory of 2936 1876 2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\2a413fc28008906ff64b62daf1ea0ea7_JaffaCakes118.exe"1⤵
- Modifies WinLogon for persistence
- Drops startup file
- Loads dropped DLL
- Enumerates connected drives
- Drops autorun.inf file
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:1876 -
C:\Windows\SysWOW64\HelpMe.exeC:\Windows\system32\HelpMe.exe2⤵
- Modifies WinLogon for persistence
- Drops startup file
- Executes dropped EXE
- Enumerates connected drives
- Drops autorun.inf file
- Drops file in System32 directory
PID:2936
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
909KB
MD59ed460c698cfba3d65f6a548677fac6d
SHA1dc75c782aad79d2b462456c1ea13babb9da0ce14
SHA256517329631968a733288d9ded8dd73c48910ca652c3c5f339b5a6170e7aa50c50
SHA51236b3559a9ef364af368758a17a0f4efe20fa2c7495ca0273ac4ab20354dfb08fad06abcffaea1a5488ede751a1624fd2e4404a0be202e983a892ac60d7a36f2b
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Filesize
1KB
MD5e2480e0f8f0343385777b2763a5fe223
SHA1b211d604545c09cc264ab7b6ee1df62e9d2143a3
SHA25629f23d591c690f0fbcf750243bafbc2b313511aa766901a3ac35eba01c2118e9
SHA512dd57817557bc9766f87dcfe8c0de79470eb55f3f870ac6f9c9579bd825add64a6c84331480a7cc8dd56964b811b3cd92a97a4f784c452e51443f28b7b60f3abc
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Filesize
950B
MD5745ee286118b091328670bc3b49eeec2
SHA17edb46cef139aab725420d82d80e94327ea3d7db
SHA256434b2f5e831f76a2b4f5bd6f676936309f2bfae55741ab2823f27f43e20123a5
SHA5128b75f072fc5130bc6a5e0c6c4df692d9a50fbbf1bbfdcd94056bdcc7871a4355a89969690c7712fb695ea25dbcf7abf5f20e5f58171e392b1403ffa089ad7272
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Filesize
145B
MD5ca13857b2fd3895a39f09d9dde3cca97
SHA18b78c5b2ec97c372ebdcef92d14b0998f8dd6dd0
SHA256cfe448b4506a95b33b529efa88f1ac704d8bdf98a941c065650ead27609318ae
SHA51255e5b5325968d1e5314527fb2d26012f5aae4a1c38e305417be273400cb1c6d0c22b85bddb501d7a5720a3f53bb5caf6ada8a7894232344c4f6c6ef85d226b47
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Filesize
909KB
MD52a413fc28008906ff64b62daf1ea0ea7
SHA1efcf0308d29f9a821b32cb4e538b06a54d59b018
SHA2563a81dde4b638df30022d899c14177578688b06744f9bfbfc07071d653986e476
SHA512808a88389e51e3acb333890c5c260946efc99600cc123c142a63c706958444426b07adb5ec40c0443584ed20934df6c9be3e98b190166841758248fa1fb89d4f
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Filesize
750KB
MD50f4a11370c4bf46df2397042d445f84c
SHA1b617773bc05ce671b21713028e77981d1c69601e
SHA2564e4c9a72d72e1b9b6245c86e6cfa1d87547e186ffbc4e6c554262344baa1727d
SHA51243f0f254ce46b7e26202c8cc484977b70ba44b03ca495ae22fe371862d03bb8262a6af9893e734150792e5a62f7411d058ec765605d7cc5c9d4ca2f571f2c102