Analysis
- max time kernel
141s - max time network
143s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
27/01/2023, 04:29
General
- Target file.exe
- Size 202KB
- Sample230127-e38qrsgd83
- SHA256 edbc89cb962e4fea5c8bf9946c841e68340a51c5a22afa07a8df9df4cca81d65
Malware Config
Extracted
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djvu
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http://drampik.com/lancer/get.php
-
extension
.mzop
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offline_id
ex4uvTKsM2vEkIcr3MjXi2C6v27h1mS682iUXGt1
-
payload_url
http://uaery.top/dl/build2.exe
http://drampik.com/files/1/build3.exe
-
ransomnote
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Signatures
- Detected Djvu ransomware 6 IoCs
- Detects Smokeloader packer 2 IoCs
- Djvu Ransomware
Ransomware which is a variant of the STOP family.
- SmokeLoader
Modular backdoor trojan in use since 2014.
- Downloads MZ/PE file
- Executes dropped EXE 10 IoCs
- VMProtect packed file 6 IoCs
Detects executables packed with VMProtect commercial packer.
- Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
- Modifies file permissions 1 TTPs 1 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Program crash 2 IoCs
- Checks SCSI registry key(s) 3 TTPs 9 IoCs
SCSI information is often read in order to detect sandboxing environments.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: MapViewOfSection 3 IoCs
- Suspicious use of AdjustPrivilegeToken 8 IoCs
- Suspicious use of WriteProcessMemory 35 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
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C:\Users\Admin\AppData\Local\Temp\1F7E.exeC:\Users\Admin\AppData\Local\Temp\1F7E.exe1⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /tn "svcupdater" /tr "C:\Users\Admin\AppData\Roaming\Win32Sync\svcupdater.exe" /st 00:00 /du 9999:59 /sc once /ri 1 /f2⤵
- Creates scheduled task(s)
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 988 -s 10282⤵
- Program crash
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C:\Users\Admin\AppData\Local\Temp\2116.exeC:\Users\Admin\AppData\Local\Temp\2116.exe1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\2116.exeC:\Users\Admin\AppData\Local\Temp\2116.exe2⤵
- Executes dropped EXE
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\1bce87cd-a066-44df-aa10-4957260e25ef" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
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C:\Users\Admin\AppData\Local\Temp\2116.exe"C:\Users\Admin\AppData\Local\Temp\2116.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Executes dropped EXE
-
-
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C:\Users\Admin\AppData\Local\Temp\259B.exeC:\Users\Admin\AppData\Local\Temp\259B.exe1⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
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C:\Users\Admin\AppData\Local\Temp\28D8.exeC:\Users\Admin\AppData\Local\Temp\28D8.exe1⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2952 -s 3442⤵
- Program crash
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C:\Users\Admin\AppData\Local\Temp\2F80.exeC:\Users\Admin\AppData\Local\Temp\2F80.exe1⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\34F0.exeC:\Users\Admin\AppData\Local\Temp\34F0.exe1⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 988 -ip 9881⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 2952 -ip 29521⤵
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C:\Users\Admin\AppData\Roaming\Win32Sync\svcupdater.exeC:\Users\Admin\AppData\Roaming\Win32Sync\svcupdater.exe1⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Roaming\rrwfdbaC:\Users\Admin\AppData\Roaming\rrwfdba1⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
2116.exe
1F7E.exe
1F7E.exe
2116.exe
2116.exe
2116.exe
2116.exe
259B.exe
259B.exe
28D8.exe
28D8.exe
2F80.exe
2F80.exe
34F0.exe
34F0.exe
svcupdater.exe
svcupdater.exe
rrwfdba
rrwfdba
memory/988-181-0x0000000000400000-0x000000000046D000-memory.dmp
memory/988-164-0x0000000000400000-0x000000000046D000-memory.dmp
memory/988-180-0x00000000004CD000-0x00000000004F7000-memory.dmp
memory/988-163-0x0000000001FA0000-0x0000000001FE7000-memory.dmp
memory/988-162-0x00000000004CD000-0x00000000004F7000-memory.dmp
memory/1620-168-0x0000000002CB0000-0x0000000002CB9000-memory.dmp
memory/1620-167-0x0000000002CF9000-0x0000000002D0C000-memory.dmp
memory/1620-179-0x0000000000400000-0x0000000002B9B000-memory.dmp
memory/1620-169-0x0000000000400000-0x0000000002B9B000-memory.dmp
memory/1868-166-0x00000000048F0000-0x0000000004A0B000-memory.dmp
memory/1868-165-0x0000000002D7B000-0x0000000002E0C000-memory.dmp
memory/1876-151-0x0000000140000000-0x0000000140623000-memory.dmp
memory/2952-177-0x0000000002D5D000-0x0000000002D70000-memory.dmp
memory/2952-178-0x0000000000400000-0x0000000002B9D000-memory.dmp
memory/3000-158-0x0000000140000000-0x0000000140623000-memory.dmp
memory/4032-186-0x0000000000470000-0x0000000000570000-memory.dmp
memory/4032-187-0x0000000000400000-0x000000000046D000-memory.dmp
memory/4596-135-0x0000000000400000-0x0000000002B9B000-memory.dmp
memory/4596-132-0x0000000002CF9000-0x0000000002D0C000-memory.dmp
memory/4596-134-0x0000000000400000-0x0000000002B9B000-memory.dmp
memory/4596-133-0x0000000002C60000-0x0000000002C69000-memory.dmp
memory/4780-191-0x0000000002BC9000-0x0000000002BDC000-memory.dmp
memory/4780-195-0x0000000000400000-0x0000000002B9B000-memory.dmp
memory/4780-196-0x0000000000400000-0x0000000002B9B000-memory.dmp
memory/5052-174-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5052-171-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5052-173-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5052-176-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5052-194-0x0000000000400000-0x0000000000537000-memory.dmp