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Analysis
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max time kernel
145s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20240419-en -
resource tags
arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system -
submitted
09/05/2024, 06:43
Behavioral task
behavioral1
Sample
28c423a0fa0a5094ff5f7054ef3b0ed2_JaffaCakes118.exe
Resource
win7-20240419-en
Behavioral task
behavioral2
Sample
28c423a0fa0a5094ff5f7054ef3b0ed2_JaffaCakes118.exe
Resource
win10v2004-20240508-en
General
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Target
28c423a0fa0a5094ff5f7054ef3b0ed2_JaffaCakes118.exe
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Size
783KB
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MD5
28c423a0fa0a5094ff5f7054ef3b0ed2
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SHA1
a9ad4e7f3da9004b98dcd264d444c07eb58a3067
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SHA256
7e862226f685439f0e33ebfd42a08e3f68298fd3ca4a29006be3401a09737124
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SHA512
bacebef1231ffd1db387995935c9ef86894c61cea37e87743bcbab2553edb4f0b578941e2cc0a32bbfd9ff391212720b370b59e1438bfa04dd26c096c161af10
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SSDEEP
24576:ZMMpXS0hN0V0HoSGB2uJ2s4otqFCJrW9FqvSbqsHasgXhFHDAGtlRXZ+CP63n0NP:Kwi0L0qlJ8Z
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" 28c423a0fa0a5094ff5f7054ef3b0ed2_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/0x000b00000001227c-2.dat aspack_v212_v242 behavioral1/files/0x00090000000134f5-38.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 28c423a0fa0a5094ff5f7054ef3b0ed2_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 28c423a0fa0a5094ff5f7054ef3b0ed2_JaffaCakes118.exe -
Executes dropped EXE 1 IoCs
pid Process 2448 HelpMe.exe -
Loads dropped DLL 2 IoCs
pid Process 1740 28c423a0fa0a5094ff5f7054ef3b0ed2_JaffaCakes118.exe 1740 28c423a0fa0a5094ff5f7054ef3b0ed2_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) \??\O: 28c423a0fa0a5094ff5f7054ef3b0ed2_JaffaCakes118.exe File opened (read-only) \??\Y: 28c423a0fa0a5094ff5f7054ef3b0ed2_JaffaCakes118.exe File opened (read-only) \??\K: HelpMe.exe File opened (read-only) \??\N: HelpMe.exe File opened (read-only) \??\W: HelpMe.exe File opened (read-only) \??\I: 28c423a0fa0a5094ff5f7054ef3b0ed2_JaffaCakes118.exe File opened (read-only) \??\Q: 28c423a0fa0a5094ff5f7054ef3b0ed2_JaffaCakes118.exe File opened (read-only) \??\A: HelpMe.exe File opened (read-only) \??\E: HelpMe.exe File opened (read-only) \??\O: HelpMe.exe File opened (read-only) \??\S: HelpMe.exe File opened (read-only) \??\Z: HelpMe.exe File opened (read-only) \??\H: 28c423a0fa0a5094ff5f7054ef3b0ed2_JaffaCakes118.exe File opened (read-only) \??\E: 28c423a0fa0a5094ff5f7054ef3b0ed2_JaffaCakes118.exe File opened (read-only) \??\P: 28c423a0fa0a5094ff5f7054ef3b0ed2_JaffaCakes118.exe File opened (read-only) \??\V: 28c423a0fa0a5094ff5f7054ef3b0ed2_JaffaCakes118.exe File opened (read-only) \??\B: 28c423a0fa0a5094ff5f7054ef3b0ed2_JaffaCakes118.exe File opened (read-only) \??\J: 28c423a0fa0a5094ff5f7054ef3b0ed2_JaffaCakes118.exe File opened (read-only) \??\L: 28c423a0fa0a5094ff5f7054ef3b0ed2_JaffaCakes118.exe File opened (read-only) \??\T: 28c423a0fa0a5094ff5f7054ef3b0ed2_JaffaCakes118.exe File opened (read-only) \??\H: HelpMe.exe File opened (read-only) \??\R: HelpMe.exe File opened (read-only) \??\T: HelpMe.exe File opened (read-only) \??\G: 28c423a0fa0a5094ff5f7054ef3b0ed2_JaffaCakes118.exe File opened (read-only) \??\R: 28c423a0fa0a5094ff5f7054ef3b0ed2_JaffaCakes118.exe File opened (read-only) \??\B: HelpMe.exe File opened (read-only) \??\G: HelpMe.exe File opened (read-only) \??\I: HelpMe.exe File opened (read-only) \??\J: HelpMe.exe File opened (read-only) \??\P: HelpMe.exe File opened (read-only) \??\Q: HelpMe.exe File opened (read-only) \??\K: 28c423a0fa0a5094ff5f7054ef3b0ed2_JaffaCakes118.exe File opened (read-only) \??\Y: HelpMe.exe File opened (read-only) \??\X: 28c423a0fa0a5094ff5f7054ef3b0ed2_JaffaCakes118.exe File opened (read-only) \??\W: 28c423a0fa0a5094ff5f7054ef3b0ed2_JaffaCakes118.exe File opened (read-only) \??\U: 28c423a0fa0a5094ff5f7054ef3b0ed2_JaffaCakes118.exe File opened (read-only) \??\Z: 28c423a0fa0a5094ff5f7054ef3b0ed2_JaffaCakes118.exe File opened (read-only) \??\M: HelpMe.exe File opened (read-only) \??\U: HelpMe.exe File opened (read-only) \??\V: HelpMe.exe File opened (read-only) \??\X: HelpMe.exe File opened (read-only) \??\N: 28c423a0fa0a5094ff5f7054ef3b0ed2_JaffaCakes118.exe File opened (read-only) \??\M: 28c423a0fa0a5094ff5f7054ef3b0ed2_JaffaCakes118.exe File opened (read-only) \??\S: 28c423a0fa0a5094ff5f7054ef3b0ed2_JaffaCakes118.exe File opened (read-only) \??\L: HelpMe.exe File opened (read-only) \??\A: 28c423a0fa0a5094ff5f7054ef3b0ed2_JaffaCakes118.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 F:\AUTORUN.INF 28c423a0fa0a5094ff5f7054ef3b0ed2_JaffaCakes118.exe File opened for modification C:\AUTORUN.INF 28c423a0fa0a5094ff5f7054ef3b0ed2_JaffaCakes118.exe File opened for modification F:\AUTORUN.INF HelpMe.exe -
Drops file in System32 directory 2 IoCs
description ioc Process File created C:\Windows\SysWOW64\HelpMe.exe 28c423a0fa0a5094ff5f7054ef3b0ed2_JaffaCakes118.exe File created C:\Windows\SysWOW64\HelpMe.exe HelpMe.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 1740 wrote to memory of 2448 1740 28c423a0fa0a5094ff5f7054ef3b0ed2_JaffaCakes118.exe 28 PID 1740 wrote to memory of 2448 1740 28c423a0fa0a5094ff5f7054ef3b0ed2_JaffaCakes118.exe 28 PID 1740 wrote to memory of 2448 1740 28c423a0fa0a5094ff5f7054ef3b0ed2_JaffaCakes118.exe 28 PID 1740 wrote to memory of 2448 1740 28c423a0fa0a5094ff5f7054ef3b0ed2_JaffaCakes118.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\28c423a0fa0a5094ff5f7054ef3b0ed2_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\28c423a0fa0a5094ff5f7054ef3b0ed2_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:1740 -
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:2448
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
784KB
MD5b2fb07b9b3534172487ed8786eb36c83
SHA1b0a67976d70ed81b05732c4300b525dd32293589
SHA25669f237d60f0be8e5e3cd20b8a19beee79e34c48b39e4e10311f2d720d6885609
SHA512999dc99e4d204d5a1f8e060259efe8db00e0b26109b915ba17ed45fa9dfed2c1c4ba0fe9cf50f5e791720df5d40ba60fee79bd86126da545079351793cc4f2c0
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Filesize
1KB
MD5bcd2938f4928ab325ddbbe0f060c6f51
SHA15e0b0442ef8566ea592707d61a9e14a658d6ccda
SHA256ca6b6419a4c431dee09377ad928bba069b76638b18857dc089d921f076b3f0c0
SHA5122541df4f89a1bafacff2f4a5699741c7d6c6bbd10e4a6cf2cbde8521851cb143a590df67b9decc57733e7b5587298e02380ee57572a7b5cdc929debbfa7cc278
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Filesize
950B
MD50b22d652bcc2f65181c902dba814a98b
SHA10550413a7855f6232b1a7524964b220af660d8fd
SHA256046a07c24e5605e63d1f67049962fe5f41b43180e523228b9e93d87bbec6a74c
SHA5129b22861155e379429b0ad57c0b244b4e737a3924dc1ed2aebc39e22292a9d09c34596f543c656cf4298c52437a6cd81a11c47ebd91185ef6807b722e0deee5cc
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Filesize
145B
MD5ca13857b2fd3895a39f09d9dde3cca97
SHA18b78c5b2ec97c372ebdcef92d14b0998f8dd6dd0
SHA256cfe448b4506a95b33b529efa88f1ac704d8bdf98a941c065650ead27609318ae
SHA51255e5b5325968d1e5314527fb2d26012f5aae4a1c38e305417be273400cb1c6d0c22b85bddb501d7a5720a3f53bb5caf6ada8a7894232344c4f6c6ef85d226b47
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Filesize
783KB
MD528c423a0fa0a5094ff5f7054ef3b0ed2
SHA1a9ad4e7f3da9004b98dcd264d444c07eb58a3067
SHA2567e862226f685439f0e33ebfd42a08e3f68298fd3ca4a29006be3401a09737124
SHA512bacebef1231ffd1db387995935c9ef86894c61cea37e87743bcbab2553edb4f0b578941e2cc0a32bbfd9ff391212720b370b59e1438bfa04dd26c096c161af10
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Filesize
782KB
MD55db8318f4243e393c6766c868f25099a
SHA1857fe7a985036964f7ec0a2eff98b214c0c8195e
SHA2562f0f1efbfb69aa0da870c175aa7ca1aface944a7f02f8cd613b1256305dbaf18
SHA5122b0b55b88b5a591289fac86135ecc83fa3cdb48169d107316e4a3af51e8dc2177d1917704737b1411d5ca83e7ef304cbc52d16b66b8bb1b3d62143d7bde91e3a