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25/03/2025, 15:11
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250205-k785zs1pfn 10Analysis
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max time kernel
33s -
max time network
11s -
platform
windows11-21h2_x64 -
resource
win11-20250313-en -
resource tags
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submitted
25/03/2025, 14:56
General
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Target
RansomwareSamples/MountLocker_20_11_2020_200KB.exe
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Size
200KB
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MD5
c2671bf5b5dedbfd3cfe3f0f944fbe01
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SHA1
da3e830011e6f9d41dd6c93fdb48c47c1c6e35e1
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SHA256
226a723ffb4a91d9950a8b266167c5b354ab0db1dc225578494917fe53867ef2
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SHA512
256bc8582cc9b53b3cf9307a2882117476648ab9df540d501fc5f46a4030beacab9df2019f2d83b0a63d510803cbf6cbae01dc1325588f93a1a74521a07fe4d9
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SSDEEP
1536:ssBoz9GFuIdclwKfVPoawSL20mRbg2DrE1mHkrY0f3r6fR0ZzDWR+3itGSh6ZVvg:ssS3oifBoaXhDWA4G3eeJaeIbmC00
Malware Config
Extracted
C:\Program Files\7-Zip\Lang\RecoveryManual.html
href="mailto:[email protected]">[email protected]</a><br>
Signatures
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MountLocker Ransomware
Ransomware family first seen in late 2020, which threatens to leak files if ransom is not paid.
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Mountlocker family
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Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell and hide display window.
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Drops desktop.ini file(s) 27 IoCs
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Enumerates connected drives 3 TTPs 1 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
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Drops file in Program Files directory 64 IoCs
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System Location Discovery: System Language Discovery 1 TTPs 4 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
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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 3 IoCs
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Suspicious use of SetWindowsHookEx 1 IoCs
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Suspicious use of WriteProcessMemory 9 IoCs
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Views/modifies file attributes 1 TTPs 1 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\RansomwareSamples\MountLocker_20_11_2020_200KB.exe"C:\Users\Admin\AppData\Local\Temp\RansomwareSamples\MountLocker_20_11_2020_200KB.exe"1⤵
- Drops desktop.ini file(s)
- Enumerates connected drives
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell.exe -windowstyle hidden -c $mypid='4220';[System.IO.File]::ReadAllText('C:\Users\Admin\AppData\Local\Temp\~240608078.tmp')|iex2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\\0E57DEF6.bat" "C:\Users\Admin\AppData\Local\Temp\RansomwareSamples\MountLocker_20_11_2020_200KB.exe""2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\attrib.exeattrib -s -r -h "C:\Users\Admin\AppData\Local\Temp\RansomwareSamples\MountLocker_20_11_2020_200KB.exe"3⤵
- System Location Discovery: System Language Discovery
- Views/modifies file attributes
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
2KB
MD520a4e982b05e61df8083065b2ccb2340
SHA10745d4292c8339fad60d68f7e427d3d3b5fb92d1
SHA25611579974bf043c4f2e84473a80e1ee103c255b6b8207130c48118a58084ba8ee
SHA512996a24105a305f65602b97cf85775cdd8e6472879b823d077df0dc622c14db1c18dca06bf2ec00bcb1abdbd607eee346edfde297be93ee29504f7ede7adc2ecf
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Filesize
65B
MD5348cae913e496198548854f5ff2f6d1e
SHA1a07655b9020205bd47084afd62a8bb22b48c0cdc
SHA256c80128f51871eec3ae2057989a025ce244277c1c180498a5aaef45d5214b8506
SHA512799796736d41d3fcb5a7c859571bb025ca2d062c4b86e078302be68c1a932ed4f78e003640df5405274364b5a9a9c0ba5e37177997683ee7ab54e5267590b611
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
4KB
MD54e1a1e3e715c291c71950d2fdc79e2be
SHA1dc2b3d20a9ec88e0d8d75c5097154687acc42983
SHA256acf88b9224ae067d92882d1c8ec1461a663e83f02848488ce125dc0538d87a39
SHA512d1be9f6459c248a93c95cc40a68e60ca2fe8068ff4ed5d442437a72bcc09ebf8568e3338d39abebbf3fe8e9e4e3a21a58e1ed6bdbcdd0a3b2ca46b6a81597d80
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Filesize
8KB
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Filesize
60KB
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Filesize
8KB
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Filesize
8KB
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Filesize
8KB
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Filesize
8KB
-
Filesize
8KB
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Filesize
8KB
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Filesize
4KB
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Filesize
8KB
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Filesize
216KB
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Filesize
8KB
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Filesize
60KB
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Filesize
8KB
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Filesize
60KB
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Filesize
8KB
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Filesize
60KB
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Filesize
60KB
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Filesize
60KB
-
Filesize
4KB
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Filesize
8KB
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Filesize
8KB
-
Filesize
304KB
-
Filesize
408KB
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Filesize
3.3MB
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Filesize
6.5MB
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Filesize
104KB
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Filesize
7.7MB
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Filesize
208KB
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Filesize
304KB
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Filesize
120KB
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Filesize
7.7MB
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Filesize
656KB
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Filesize
7.7MB
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Filesize
40KB
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Filesize
600KB
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Filesize
68KB
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Filesize
120KB
-
Filesize
56KB
-
Filesize
84KB
-
Filesize
104KB
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Filesize
32KB
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Filesize
136KB
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Filesize
5.6MB
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Filesize
4KB
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Filesize
7.7MB
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Filesize
7.7MB
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Filesize
408KB
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Filesize
136KB
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Filesize
6.2MB
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Filesize
7.7MB
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Filesize
216KB
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Filesize
4KB