Analysis
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max time kernel
128s -
max time network
56s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
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submitted
23-06-2024 22:50
General
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Target
706cf72e86b19918cda7b573f549fa286ba005615ddf9cb4acd01cf09a0d20a6.exe
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Size
5.6MB
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MD5
095db264f03dba2cb16f1e3acaf60d27
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SHA1
2b1bb5b5aedcc0dd95eb694ae53aa4ce108c85bb
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SHA256
706cf72e86b19918cda7b573f549fa286ba005615ddf9cb4acd01cf09a0d20a6
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SHA512
7706cdcb52fc5318ee6a14c9ba580980d7af4e851485de8662ac997359dbac140ad1cb8f31d9e71ee9574cb0307e4167c8a5e807cffabca6b093682f4d1232ea
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SSDEEP
98304:uv9Vu+MMjYAMHlaWnAskRRZfhck06/o/Di+R1MI064hHgjhxCJpGdKeeO53LSNpw:uv988KlaOARRZfCxDbxRj6HgbCbvSLSh
Malware Config
Extracted
\Device\HarddiskVolume1\Recovery_Instructions.html
Signatures
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MedusaLocker
Ransomware with several variants first seen in September 2019.
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MedusaLocker payload 4 IoCs
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UAC bypass 3 TTPs 2 IoCs
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Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) 4 IoCs
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Detects command variations typically used by ransomware 4 IoCs
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Detects executables packed with VMProtect. 5 IoCs
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Renames multiple (175) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Executes dropped EXE 1 IoCs
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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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VMProtect packed file 5 IoCs
Detects executables packed with VMProtect commercial packer.
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Checks whether UAC is enabled 1 TTPs 1 IoCs
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Drops desktop.ini file(s) 1 IoCs
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Enumerates connected drives 3 TTPs 24 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 64 IoCs
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Suspicious use of AdjustPrivilegeToken 63 IoCs
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Suspicious use of WriteProcessMemory 9 IoCs
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System policy modification 1 TTPs 3 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\706cf72e86b19918cda7b573f549fa286ba005615ddf9cb4acd01cf09a0d20a6.exe"C:\Users\Admin\AppData\Local\Temp\706cf72e86b19918cda7b573f549fa286ba005615ddf9cb4acd01cf09a0d20a6.exe"1⤵
- UAC bypass
- Checks whether UAC is enabled
- Drops desktop.ini file(s)
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- System policy modification
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C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Roaming\svhost.exeC:\Users\Admin\AppData\Roaming\svhost.exe1⤵
- Executes dropped EXE
Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Impair Defenses
1Disable or Modify Tools
1Modify Registry
2Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
5.6MB
MD5095db264f03dba2cb16f1e3acaf60d27
SHA12b1bb5b5aedcc0dd95eb694ae53aa4ce108c85bb
SHA256706cf72e86b19918cda7b573f549fa286ba005615ddf9cb4acd01cf09a0d20a6
SHA5127706cdcb52fc5318ee6a14c9ba580980d7af4e851485de8662ac997359dbac140ad1cb8f31d9e71ee9574cb0307e4167c8a5e807cffabca6b093682f4d1232ea
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Filesize
536B
MD514242da9356ef42c4afead49406a1ad9
SHA14817f82fb5be1d978d5ccd6353081fbd57e4de9e
SHA256c6b265ed7b61d7739bbdfbda28604854498a47689f5755adeab9b4dc4e1875fd
SHA51227a4c37ddb5e5c8e68f30eacd4eae39e341cf38fd4c1eb5910a85480f6030796461028be53ad4dff2434c174b6e405b3807fbe1be30417040ed6601471bfdfd1
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Filesize
4KB
MD5f6239fb8d7f65d8d88d9245e9adfc8fb
SHA1cabde9c2531346d2d084edc7aaea1af76628cb63
SHA256127aa4c8fb0d66a9159ca9fbf1a1b96b6dbc0d49ae8686a084c04ac324583fe9
SHA512865d1237d15cea981ee6a35200e8ca85e992488c9f8746e663785a466630b1c5e3f15458aca796cbfcd5545dc4958ff6627273e9378a6075c78bd5f563bdd71e
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Filesize
9.5MB
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Filesize
4KB
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Filesize
3.3MB
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Filesize
9.5MB
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Filesize
9.5MB
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Filesize
4KB
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Filesize
9.5MB