Analysis
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max time kernel
121s -
max time network
130s -
platform
windows7_x64 -
resource
win7-en-20211104 -
submitted
15-11-2021 21:42
Static task
static1
Behavioral task
behavioral1
Sample
77bee09a3541dba878366b1c93835ebbfb316ab0b4487eb9b5f15eaa4c1277c3.exe
Resource
win7-en-20211104
Behavioral task
behavioral2
Sample
77bee09a3541dba878366b1c93835ebbfb316ab0b4487eb9b5f15eaa4c1277c3.exe
Resource
win10-en-20211014
General
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Target
77bee09a3541dba878366b1c93835ebbfb316ab0b4487eb9b5f15eaa4c1277c3.exe
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Size
29.8MB
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MD5
f24c1c3b8d39e6e7a6d765c6ef69f8fd
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SHA1
c3aba9eeeaa4b4ddadea83a6327826e81187d222
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SHA256
77bee09a3541dba878366b1c93835ebbfb316ab0b4487eb9b5f15eaa4c1277c3
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SHA512
c4102d32a2232d8d5844b080cf75c51419c5f276a33cc9cc1c707796ddfc0a670cffb07d494a0641a102a3fdd4f74424105eebec6ad9bf70ea4a3955fc89bb6f
Malware Config
Extracted
oski
projectblackhat.com
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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Executes dropped EXE 1 IoCs
Processes:
ORB.net.exepid process 868 ORB.net.exe -
Loads dropped DLL 7 IoCs
Processes:
77bee09a3541dba878366b1c93835ebbfb316ab0b4487eb9b5f15eaa4c1277c3.exeORB.net.exepid process 1380 77bee09a3541dba878366b1c93835ebbfb316ab0b4487eb9b5f15eaa4c1277c3.exe 1380 77bee09a3541dba878366b1c93835ebbfb316ab0b4487eb9b5f15eaa4c1277c3.exe 868 ORB.net.exe 868 ORB.net.exe 868 ORB.net.exe 868 ORB.net.exe 868 ORB.net.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). 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:
ORB.net.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString ORB.net.exe -
Kills process with taskkill 1 IoCs
Processes:
taskkill.exepid process 1504 taskkill.exe -
Modifies registry class 2 IoCs
Processes:
rundll32.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000_Classes\Local Settings rundll32.exe Key created \REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache rundll32.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
vlc.exepid process 1404 vlc.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
vlc.exepid process 1404 vlc.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid process Token: SeDebugPrivilege 1504 taskkill.exe -
Suspicious use of FindShellTrayWindow 9 IoCs
Processes:
vlc.exepid process 1404 vlc.exe 1404 vlc.exe 1404 vlc.exe 1404 vlc.exe 1404 vlc.exe 1404 vlc.exe 1404 vlc.exe 1404 vlc.exe 1404 vlc.exe -
Suspicious use of SendNotifyMessage 8 IoCs
Processes:
vlc.exepid process 1404 vlc.exe 1404 vlc.exe 1404 vlc.exe 1404 vlc.exe 1404 vlc.exe 1404 vlc.exe 1404 vlc.exe 1404 vlc.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
vlc.exepid process 1404 vlc.exe -
Suspicious use of WriteProcessMemory 23 IoCs
Processes:
77bee09a3541dba878366b1c93835ebbfb316ab0b4487eb9b5f15eaa4c1277c3.exerundll32.exeORB.net.execmd.exedescription pid process target process PID 1380 wrote to memory of 556 1380 77bee09a3541dba878366b1c93835ebbfb316ab0b4487eb9b5f15eaa4c1277c3.exe rundll32.exe PID 1380 wrote to memory of 556 1380 77bee09a3541dba878366b1c93835ebbfb316ab0b4487eb9b5f15eaa4c1277c3.exe rundll32.exe PID 1380 wrote to memory of 556 1380 77bee09a3541dba878366b1c93835ebbfb316ab0b4487eb9b5f15eaa4c1277c3.exe rundll32.exe PID 1380 wrote to memory of 556 1380 77bee09a3541dba878366b1c93835ebbfb316ab0b4487eb9b5f15eaa4c1277c3.exe rundll32.exe PID 1380 wrote to memory of 556 1380 77bee09a3541dba878366b1c93835ebbfb316ab0b4487eb9b5f15eaa4c1277c3.exe rundll32.exe PID 1380 wrote to memory of 556 1380 77bee09a3541dba878366b1c93835ebbfb316ab0b4487eb9b5f15eaa4c1277c3.exe rundll32.exe PID 1380 wrote to memory of 556 1380 77bee09a3541dba878366b1c93835ebbfb316ab0b4487eb9b5f15eaa4c1277c3.exe rundll32.exe PID 1380 wrote to memory of 868 1380 77bee09a3541dba878366b1c93835ebbfb316ab0b4487eb9b5f15eaa4c1277c3.exe ORB.net.exe PID 1380 wrote to memory of 868 1380 77bee09a3541dba878366b1c93835ebbfb316ab0b4487eb9b5f15eaa4c1277c3.exe ORB.net.exe PID 1380 wrote to memory of 868 1380 77bee09a3541dba878366b1c93835ebbfb316ab0b4487eb9b5f15eaa4c1277c3.exe ORB.net.exe PID 1380 wrote to memory of 868 1380 77bee09a3541dba878366b1c93835ebbfb316ab0b4487eb9b5f15eaa4c1277c3.exe ORB.net.exe PID 556 wrote to memory of 1404 556 rundll32.exe vlc.exe PID 556 wrote to memory of 1404 556 rundll32.exe vlc.exe PID 556 wrote to memory of 1404 556 rundll32.exe vlc.exe PID 556 wrote to memory of 1404 556 rundll32.exe vlc.exe PID 868 wrote to memory of 832 868 ORB.net.exe cmd.exe PID 868 wrote to memory of 832 868 ORB.net.exe cmd.exe PID 868 wrote to memory of 832 868 ORB.net.exe cmd.exe PID 868 wrote to memory of 832 868 ORB.net.exe cmd.exe PID 832 wrote to memory of 1504 832 cmd.exe taskkill.exe PID 832 wrote to memory of 1504 832 cmd.exe taskkill.exe PID 832 wrote to memory of 1504 832 cmd.exe taskkill.exe PID 832 wrote to memory of 1504 832 cmd.exe taskkill.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\77bee09a3541dba878366b1c93835ebbfb316ab0b4487eb9b5f15eaa4c1277c3.exe"C:\Users\Admin\AppData\Local\Temp\77bee09a3541dba878366b1c93835ebbfb316ab0b4487eb9b5f15eaa4c1277c3.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exe"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\2021-11-08 10-19-23.rar2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
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C:\Program Files\VideoLAN\VLC\vlc.exe"C:\Program Files\VideoLAN\VLC\vlc.exe" --started-from-file "C:\Users\Admin\AppData\Local\Temp\2021-11-08 10-19-23.rar"3⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
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C:\Users\Admin\AppData\Local\Temp\ORB.net.exe"C:\Users\Admin\AppData\Local\Temp\ORB.net.exe"2⤵
- Executes dropped EXE
- 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 868 & erase C:\Users\Admin\AppData\Local\Temp\ORB.net.exe & RD /S /Q C:\\ProgramData\\817429986245390\\* & exit3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\taskkill.exetaskkill /pid 8684⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\2021-11-08 10-19-23.rarMD5
e24250b0a416c4570eaff0f9aa5bbdde
SHA10815102ebb5890dacaf8ec07b424e1e5dc76ba83
SHA2564e434e1de23f7d5a5a774c9f42171c4df1112d329216a911e05c1bb090a3d4a0
SHA5124f84f9c1ea4308aa9578cd5b87c56a78d51a4519cad4db8b9a9e7c61921440afafb37574e70a4cd0e080afb51ca2e9259e3d475eed6fa500efdb41c09251c9a2
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C:\Users\Admin\AppData\Local\Temp\ORB.net.exeMD5
e67f4583ef6c8cea06288afc539beb88
SHA1dcf6a480ebb9f84b7d6f7f04edd2d8753e7a5e21
SHA256218296d2ac0f8fdff0ff27adf2ee5d196a646c9b6cc2a2f8d60ef04b8f2bb59b
SHA5127051b007b1f810369d6fe9506dd02016dfb016d4a03aa4a2fb2ac71e9a689b4ad707b07089dd1eabc4a7a3a291cab1a6500111e7b0ec8468f970908ff2b06af4
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C:\Users\Admin\AppData\Local\Temp\ORB.net.exeMD5
e67f4583ef6c8cea06288afc539beb88
SHA1dcf6a480ebb9f84b7d6f7f04edd2d8753e7a5e21
SHA256218296d2ac0f8fdff0ff27adf2ee5d196a646c9b6cc2a2f8d60ef04b8f2bb59b
SHA5127051b007b1f810369d6fe9506dd02016dfb016d4a03aa4a2fb2ac71e9a689b4ad707b07089dd1eabc4a7a3a291cab1a6500111e7b0ec8468f970908ff2b06af4
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\??\PIPE\srvsvcMD5
d41d8cd98f00b204e9800998ecf8427e
SHA1da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e
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\ProgramData\mozglue.dllMD5
8f73c08a9660691143661bf7332c3c27
SHA137fa65dd737c50fda710fdbde89e51374d0c204a
SHA2563fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
SHA5120042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89
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\ProgramData\msvcp140.dllMD5
109f0f02fd37c84bfc7508d4227d7ed5
SHA1ef7420141bb15ac334d3964082361a460bfdb975
SHA256334e69ac9367f708ce601a6f490ff227d6c20636da5222f148b25831d22e13d4
SHA51246eb62b65817365c249b48863d894b4669e20fcb3992e747cd5c9fdd57968e1b2cf7418d1c9340a89865eadda362b8db51947eb4427412eb83b35994f932fd39
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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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\ProgramData\vcruntime140.dllMD5
7587bf9cb4147022cd5681b015183046
SHA1f2106306a8f6f0da5afb7fc765cfa0757ad5a628
SHA256c40bb03199a2054dabfc7a8e01d6098e91de7193619effbd0f142a7bf031c14d
SHA5120b63e4979846ceba1b1ed8470432ea6aa18cca66b5f5322d17b14bc0dfa4b2ee09ca300a016e16a01db5123e4e022820698f46d9bad1078bd24675b4b181e91f
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\Users\Admin\AppData\Local\Temp\ORB.net.exeMD5
e67f4583ef6c8cea06288afc539beb88
SHA1dcf6a480ebb9f84b7d6f7f04edd2d8753e7a5e21
SHA256218296d2ac0f8fdff0ff27adf2ee5d196a646c9b6cc2a2f8d60ef04b8f2bb59b
SHA5127051b007b1f810369d6fe9506dd02016dfb016d4a03aa4a2fb2ac71e9a689b4ad707b07089dd1eabc4a7a3a291cab1a6500111e7b0ec8468f970908ff2b06af4
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\Users\Admin\AppData\Local\Temp\ORB.net.exeMD5
e67f4583ef6c8cea06288afc539beb88
SHA1dcf6a480ebb9f84b7d6f7f04edd2d8753e7a5e21
SHA256218296d2ac0f8fdff0ff27adf2ee5d196a646c9b6cc2a2f8d60ef04b8f2bb59b
SHA5127051b007b1f810369d6fe9506dd02016dfb016d4a03aa4a2fb2ac71e9a689b4ad707b07089dd1eabc4a7a3a291cab1a6500111e7b0ec8468f970908ff2b06af4
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memory/556-56-0x0000000000000000-mapping.dmp
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memory/832-71-0x0000000000000000-mapping.dmp
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memory/868-60-0x0000000000000000-mapping.dmp
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memory/1380-55-0x0000000074E51000-0x0000000074E53000-memory.dmpFilesize
8KB
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memory/1404-63-0x0000000000000000-mapping.dmp
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memory/1504-72-0x0000000000000000-mapping.dmp