Analysis
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max time kernel
118s -
max time network
126s -
platform
windows7_x64 -
resource
win7-20231020-en -
resource tags
arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system -
submitted
03-11-2023 17:36
Behavioral task
behavioral1
Sample
95C729597254D7D13131A1D787EE8672.exe
Resource
win7-20231020-en
Behavioral task
behavioral2
Sample
95C729597254D7D13131A1D787EE8672.exe
Resource
win10v2004-20231023-en
General
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Target
95C729597254D7D13131A1D787EE8672.exe
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Size
200KB
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MD5
95c729597254d7d13131a1d787ee8672
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SHA1
d44dd5beba366c2dd917ca0ed0ba5ff109d765c7
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SHA256
078e034c9471d383cda140f060f9ff26960d0674cfc9d0c05d0c704dbe5cf9ab
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SHA512
aa12e5ec478a25adf150da2f48aefe690716549f2d5a075e3d2e469ff626c8377e0a7bd4c6918b8e60bbe7be0a7428bf52fde71e3b7a66b3a88a24dffa3717ce
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SSDEEP
3072:WfUomEuYm98dlSq7gt5q7Dx+XgS6aCEwhOfUbCalNT2pbB3fIF1Xi6FLPo3c:WfUauY68uSWCx+XA7mg2pN01Ljo3c
Malware Config
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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Deletes itself 1 IoCs
Processes:
cmd.exepid process 2540 cmd.exe -
Loads dropped DLL 3 IoCs
Processes:
95C729597254D7D13131A1D787EE8672.exepid process 2632 95C729597254D7D13131A1D787EE8672.exe 2632 95C729597254D7D13131A1D787EE8672.exe 2632 95C729597254D7D13131A1D787EE8672.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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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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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:
95C729597254D7D13131A1D787EE8672.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 95C729597254D7D13131A1D787EE8672.exe -
Kills process with taskkill 1 IoCs
Processes:
taskkill.exepid process 2624 taskkill.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid process Token: SeDebugPrivilege 2624 taskkill.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
95C729597254D7D13131A1D787EE8672.execmd.exedescription pid process target process PID 2632 wrote to memory of 2540 2632 95C729597254D7D13131A1D787EE8672.exe cmd.exe PID 2632 wrote to memory of 2540 2632 95C729597254D7D13131A1D787EE8672.exe cmd.exe PID 2632 wrote to memory of 2540 2632 95C729597254D7D13131A1D787EE8672.exe cmd.exe PID 2632 wrote to memory of 2540 2632 95C729597254D7D13131A1D787EE8672.exe cmd.exe PID 2540 wrote to memory of 2624 2540 cmd.exe taskkill.exe PID 2540 wrote to memory of 2624 2540 cmd.exe taskkill.exe PID 2540 wrote to memory of 2624 2540 cmd.exe taskkill.exe PID 2540 wrote to memory of 2624 2540 cmd.exe taskkill.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\95C729597254D7D13131A1D787EE8672.exe"C:\Users\Admin\AppData\Local\Temp\95C729597254D7D13131A1D787EE8672.exe"1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:2632 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /pid 2632 & erase C:\Users\Admin\AppData\Local\Temp\95C729597254D7D13131A1D787EE8672.exe & RD /S /Q C:\\ProgramData\\754425714824321\\* & exit2⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:2540 -
C:\Windows\SysWOW64\taskkill.exetaskkill /pid 26323⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2624
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
133KB
MD58f73c08a9660691143661bf7332c3c27
SHA137fa65dd737c50fda710fdbde89e51374d0c204a
SHA2563fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
SHA5120042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89
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Filesize
1.2MB
MD5bfac4e3c5908856ba17d41edcd455a51
SHA18eec7e888767aa9e4cca8ff246eb2aacb9170428
SHA256e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
SHA5122565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66
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Filesize
630KB
MD5e477a96c8f2b18d6b5c27bde49c990bf
SHA1e980c9bf41330d1e5bd04556db4646a0210f7409
SHA25616574f51785b0e2fc29c2c61477eb47bb39f714829999511dc8952b43ab17660
SHA512335a86268e7c0e568b1c30981ec644e6cd332e66f96d2551b58a82515316693c1859d87b4f4b7310cf1ac386cee671580fdd999c3bcb23acf2c2282c01c8798c