Analysis
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max time kernel
122s -
max time network
125s -
platform
windows10_x64 -
resource
win10-en-20211104 -
submitted
06-12-2021 11:49
Static task
static1
Behavioral task
behavioral1
Sample
3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.exe
Resource
win10-en-20211104
General
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Target
3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.exe
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Size
1.3MB
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MD5
a989e8f8982eb3edd6684d790b22e48e
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SHA1
d9c024d4b196a282c7748f3c3e592d8248d71d3a
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SHA256
3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa
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SHA512
ffc9118f47286f4579eb19137ebd641f6a5bb6d36266705fb44e29b87bfe0cbd1f8d31e165bddd09bec292a60e78f4e28cbd17d97867f0184707aef0eb1a565e
Malware Config
Extracted
oski
oilproduce.xyz
Signatures
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Oski
Oski is an infostealer targeting browser data, crypto wallets.
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Downloads MZ/PE file
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Loads dropped DLL 3 IoCs
Processes:
3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.exepid process 744 3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.exe 744 3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.exe 744 3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
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Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Suspicious use of SetThreadContext 1 IoCs
Processes:
3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.exedescription pid process target process PID 3688 set thread context of 744 3688 3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.exe 3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.exe -
Kills process with taskkill 1 IoCs
Processes:
taskkill.exepid process 2076 taskkill.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.exetaskkill.exedescription pid process Token: SeDebugPrivilege 3688 3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.exe Token: SeDebugPrivilege 2076 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.exe3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.execmd.exedescription pid process target process PID 3688 wrote to memory of 744 3688 3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.exe 3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.exe PID 3688 wrote to memory of 744 3688 3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.exe 3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.exe PID 3688 wrote to memory of 744 3688 3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.exe 3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.exe PID 3688 wrote to memory of 744 3688 3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.exe 3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.exe PID 3688 wrote to memory of 744 3688 3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.exe 3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.exe PID 3688 wrote to memory of 744 3688 3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.exe 3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.exe PID 3688 wrote to memory of 744 3688 3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.exe 3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.exe PID 3688 wrote to memory of 744 3688 3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.exe 3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.exe PID 3688 wrote to memory of 744 3688 3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.exe 3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.exe PID 744 wrote to memory of 3664 744 3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.exe cmd.exe PID 744 wrote to memory of 3664 744 3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.exe cmd.exe PID 744 wrote to memory of 3664 744 3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.exe cmd.exe PID 3664 wrote to memory of 2076 3664 cmd.exe taskkill.exe PID 3664 wrote to memory of 2076 3664 cmd.exe taskkill.exe PID 3664 wrote to memory of 2076 3664 cmd.exe taskkill.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.exe"C:\Users\Admin\AppData\Local\Temp\3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.exe"C:\Users\Admin\AppData\Local\Temp\3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa.exe"2⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /pid 744 & erase C:\Users\Admin\AppData\Local\Temp\3d67ced8c8394bdc10e76835caea07dee4729e86bc665a' & RD /S /Q C:\\ProgramData\\897319084534726\\* & exit3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\taskkill.exetaskkill /pid 7444⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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\ProgramData\mozglue.dllMD5
8f73c08a9660691143661bf7332c3c27
SHA137fa65dd737c50fda710fdbde89e51374d0c204a
SHA2563fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
SHA5120042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89
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\ProgramData\nss3.dllMD5
bfac4e3c5908856ba17d41edcd455a51
SHA18eec7e888767aa9e4cca8ff246eb2aacb9170428
SHA256e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
SHA5122565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66
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\ProgramData\sqlite3.dllMD5
e477a96c8f2b18d6b5c27bde49c990bf
SHA1e980c9bf41330d1e5bd04556db4646a0210f7409
SHA25616574f51785b0e2fc29c2c61477eb47bb39f714829999511dc8952b43ab17660
SHA512335a86268e7c0e568b1c30981ec644e6cd332e66f96d2551b58a82515316693c1859d87b4f4b7310cf1ac386cee671580fdd999c3bcb23acf2c2282c01c8798c
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memory/744-128-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/744-130-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/744-129-0x000000000040717B-mapping.dmp
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memory/2076-135-0x0000000000000000-mapping.dmp
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memory/3664-134-0x0000000000000000-mapping.dmp
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memory/3688-123-0x0000000007970000-0x0000000007E6E000-memory.dmpFilesize
5.0MB
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memory/3688-127-0x0000000008980000-0x0000000008AA3000-memory.dmpFilesize
1.1MB
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memory/3688-126-0x00000000086B0000-0x00000000086B1000-memory.dmpFilesize
4KB
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memory/3688-125-0x0000000008470000-0x0000000008471000-memory.dmpFilesize
4KB
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memory/3688-124-0x0000000007DC0000-0x0000000007DC8000-memory.dmpFilesize
32KB
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memory/3688-118-0x0000000000BB0000-0x0000000000BB1000-memory.dmpFilesize
4KB
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memory/3688-122-0x0000000007AC0000-0x0000000007AC1000-memory.dmpFilesize
4KB
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memory/3688-121-0x0000000007A10000-0x0000000007A11000-memory.dmpFilesize
4KB
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memory/3688-120-0x0000000007E70000-0x0000000007E71000-memory.dmpFilesize
4KB