Analysis
- max time kernel
150s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
27/01/2023, 02:05
General
- Target file.exe
- Size 201KB
- Sample230127-cht1rshe9w
- SHA256 83ecfa90e440b13b4972a8f8f033c2e264fe50c939bee3bab7edf2a02dc094cf
Malware Config
Extracted
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djvu
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http://drampik.com/lancer/get.php
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extension
.mzop
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offline_id
ex4uvTKsM2vEkIcr3MjXi2C6v27h1mS682iUXGt1
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payload_url
http://uaery.top/dl/build2.exe
http://drampik.com/files/1/build3.exe
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ransomnote
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Extracted
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vidar
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2.2
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19
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https://t.me/litlebey
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https://steamcommunity.com/profiles/76561199472399815
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profile_id
19
Signatures
- Detected Djvu ransomware 10 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.
- Vidar
Vidar is an infostealer based on Arkei stealer.
- Downloads MZ/PE file
- Executes dropped EXE 14 IoCs
- VMProtect packed file 6 IoCs
Detects executables packed with VMProtect commercial packer.
- Checks computer location settings 2 TTPs 4 IoCs
Looks up country code configured in the registry, likely geofence.
- Loads dropped DLL 2 IoCs
- Modifies file permissions 1 TTPs 1 IoCs
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses 2FA software files, possible credential harvesting 2 TTPs
- Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- Adds Run key to start application 2 TTPs 1 IoCs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of SetThreadContext 3 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 6 IoCs
SCSI information is often read in order to detect sandboxing environments.
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Creates scheduled task(s) 1 TTPs 3 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Delays execution with timeout.exe 1 IoCs
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 2 IoCs
- Suspicious use of AdjustPrivilegeToken 16 IoCs
- Suspicious use of WriteProcessMemory 64 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\D13F.exeC:\Users\Admin\AppData\Local\Temp\D13F.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 4580 -s 11402⤵
- Program crash
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C:\Users\Admin\AppData\Local\Temp\D2C7.exeC:\Users\Admin\AppData\Local\Temp\D2C7.exe1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\D2C7.exeC:\Users\Admin\AppData\Local\Temp\D2C7.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\0689903c-02c9-4fbd-ada7-f03a4673092d" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
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C:\Users\Admin\AppData\Local\Temp\D2C7.exe"C:\Users\Admin\AppData\Local\Temp\D2C7.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\D2C7.exe"C:\Users\Admin\AppData\Local\Temp\D2C7.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\4b689862-b600-4380-aa45-c239e3ab9d47\build2.exe"C:\Users\Admin\AppData\Local\4b689862-b600-4380-aa45-c239e3ab9d47\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\4b689862-b600-4380-aa45-c239e3ab9d47\build2.exe"C:\Users\Admin\AppData\Local\4b689862-b600-4380-aa45-c239e3ab9d47\build2.exe"6⤵
- Executes dropped EXE
- Checks computer location settings
- Loads dropped DLL
- Checks processor information in registry
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\4b689862-b600-4380-aa45-c239e3ab9d47\build2.exe" & exit7⤵
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C:\Windows\SysWOW64\timeout.exetimeout /t 68⤵
- Delays execution with timeout.exe
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-
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C:\Users\Admin\AppData\Local\4b689862-b600-4380-aa45-c239e3ab9d47\build3.exe"C:\Users\Admin\AppData\Local\4b689862-b600-4380-aa45-c239e3ab9d47\build3.exe"5⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe/C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"6⤵
- Creates scheduled task(s)
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-
-
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C:\Users\Admin\AppData\Local\Temp\D71D.exeC:\Users\Admin\AppData\Local\Temp\D71D.exe1⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
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C:\Users\Admin\AppData\Local\Temp\D8D4.exeC:\Users\Admin\AppData\Local\Temp\D8D4.exe1⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4428 -s 3522⤵
- Program crash
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C:\Users\Admin\AppData\Local\Temp\DE72.exeC:\Users\Admin\AppData\Local\Temp\DE72.exe1⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\EA2B.exeC:\Users\Admin\AppData\Local\Temp\EA2B.exe1⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4428 -ip 44281⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 4580 -ip 45801⤵
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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\Microsoft\Network\mstsca.exeC:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe/C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"2⤵
- Creates scheduled task(s)
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
mozglue.dll
nss3.dll
07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
D2C7.exe
build2.exe
build2.exe
build2.exe
build3.exe
build3.exe
D13F.exe
D13F.exe
D2C7.exe
D2C7.exe
D2C7.exe
D2C7.exe
D2C7.exe
D71D.exe
D71D.exe
D8D4.exe
D8D4.exe
DE72.exe
DE72.exe
EA2B.exe
EA2B.exe
mstsca.exe
mstsca.exe
svcupdater.exe
svcupdater.exe
memory/208-186-0x0000000000400000-0x0000000000537000-memory.dmp
memory/208-172-0x0000000000400000-0x0000000000537000-memory.dmp
memory/208-160-0x0000000000400000-0x0000000000537000-memory.dmp
memory/208-163-0x0000000000400000-0x0000000000537000-memory.dmp
memory/208-167-0x0000000000400000-0x0000000000537000-memory.dmp
memory/620-193-0x0000000000400000-0x0000000000537000-memory.dmp
memory/620-218-0x0000000000400000-0x0000000000537000-memory.dmp
memory/620-191-0x0000000000400000-0x0000000000537000-memory.dmp
memory/620-194-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1260-174-0x0000000004790000-0x0000000004799000-memory.dmp
memory/1260-181-0x0000000000400000-0x0000000002B9B000-memory.dmp
memory/1260-175-0x0000000000400000-0x0000000002B9B000-memory.dmp
memory/1260-173-0x0000000002DC9000-0x0000000002DDC000-memory.dmp
memory/1560-187-0x0000000004900000-0x0000000004A1B000-memory.dmp
memory/1560-168-0x0000000004900000-0x0000000004A1B000-memory.dmp
memory/1560-165-0x0000000004847000-0x00000000048D8000-memory.dmp
memory/1988-216-0x000000000053D000-0x000000000056E000-memory.dmp
memory/1988-217-0x00000000020E0000-0x0000000002136000-memory.dmp
memory/2272-151-0x0000000140000000-0x0000000140623000-memory.dmp
memory/3668-192-0x000000000490F000-0x00000000049A0000-memory.dmp
memory/4428-177-0x0000000002EFD000-0x0000000002F10000-memory.dmp
memory/4428-176-0x0000000000400000-0x0000000002B9D000-memory.dmp
memory/4484-219-0x0000000000400000-0x000000000046A000-memory.dmp
memory/4484-245-0x0000000000400000-0x000000000046A000-memory.dmp
memory/4484-212-0x0000000000400000-0x000000000046A000-memory.dmp
memory/4484-214-0x0000000000400000-0x000000000046A000-memory.dmp
memory/4484-215-0x0000000000400000-0x000000000046A000-memory.dmp
memory/4484-223-0x0000000060900000-0x0000000060992000-memory.dmp
memory/4532-133-0x0000000002CE0000-0x0000000002CE9000-memory.dmp
memory/4532-132-0x0000000002F19000-0x0000000002F2C000-memory.dmp
memory/4532-134-0x0000000000400000-0x0000000002B9B000-memory.dmp
memory/4532-135-0x0000000000400000-0x0000000002B9B000-memory.dmp
memory/4580-182-0x00000000005AD000-0x00000000005D7000-memory.dmp
memory/4580-171-0x0000000001F70000-0x0000000001FB7000-memory.dmp
memory/4580-183-0x0000000000400000-0x000000000046D000-memory.dmp
memory/4580-170-0x00000000005AD000-0x00000000005D7000-memory.dmp
memory/4580-169-0x0000000000400000-0x000000000046D000-memory.dmp
memory/4644-220-0x000000000055C000-0x0000000000586000-memory.dmp
memory/4644-221-0x0000000000400000-0x000000000046D000-memory.dmp
memory/4644-222-0x000000000055C000-0x0000000000586000-memory.dmp
memory/4664-159-0x0000000140000000-0x0000000140623000-memory.dmp