Analysis
- max time kernel
150s - max time network
147s - platform
windows10-2004_x64 - resource
win10v2004-20220901-en - resource tags
- submitted
06/10/2022, 02:32
General
- Target file.exe
- Size 146KB
- Sample221006-c1ad3sgbd6
- SHA256 014069bf4573069dd7dd52f8778f2a441db40d6aa914508150750a4e2549be0c
Malware Config
Extracted
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djvu
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http://winnlinne.com/lancer/get.php
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extension
.adww
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offline_id
z8lhl4oForVEc7gy9Ra8rSqjYMl3xiFRuIW4not1
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payload_url
http://rgyui.top/dl/build2.exe
http://winnlinne.com/files/1/build3.exe
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ransomnote
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Extracted
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vidar
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54.9
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517
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https://t.me/larsenup
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https://ioc.exchange/@zebra54
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profile_id
517
Signatures
- Detected Djvu ransomware 11 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 13 IoCs
- Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
- Loads dropped DLL 3 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 Microsoft Outlook profiles 1 TTPs 3 IoCs
- 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.
- Legitimate hosting services abused for malware hosting/C2 1 TTPs
- 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 9 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 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 24 IoCs
- Suspicious use of AdjustPrivilegeToken 64 IoCs
- Suspicious use of WriteProcessMemory 64 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 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\3652.exeC:\Users\Admin\AppData\Local\Temp\3652.exe1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\3652.exeC:\Users\Admin\AppData\Local\Temp\3652.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\72df52d0-3564-457d-be88-8f630c4e9847" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
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C:\Users\Admin\AppData\Local\Temp\3652.exe"C:\Users\Admin\AppData\Local\Temp\3652.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\3652.exe"C:\Users\Admin\AppData\Local\Temp\3652.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\edcda818-558a-4ab2-9081-2b59a1f8c85f\build2.exe"C:\Users\Admin\AppData\Local\edcda818-558a-4ab2-9081-2b59a1f8c85f\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
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C:\Users\Admin\AppData\Local\edcda818-558a-4ab2-9081-2b59a1f8c85f\build2.exe"C:\Users\Admin\AppData\Local\edcda818-558a-4ab2-9081-2b59a1f8c85f\build2.exe"6⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
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C:\Users\Admin\AppData\Local\edcda818-558a-4ab2-9081-2b59a1f8c85f\build3.exe"C:\Users\Admin\AppData\Local\edcda818-558a-4ab2-9081-2b59a1f8c85f\build3.exe"5⤵
- Executes dropped EXE
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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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C:\Users\Admin\AppData\Local\Temp\3B35.exeC:\Users\Admin\AppData\Local\Temp\3B35.exe1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 892 -s 5442⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 892 -s 5482⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 892 -s 5482⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 892 -s 6762⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 892 -s 7602⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 892 -s 8602⤵
- Program crash
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C:\Windows\SysWOW64\Wbem\wmic.exewmic os get Caption2⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 892 -s 13562⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 892 -s 13122⤵
- Program crash
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C:\Windows\SysWOW64\cmd.execmd /C "wmic path win32_VideoController get name"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\Wbem\WMIC.exewmic path win32_VideoController get name3⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\cmd.execmd /C "wmic cpu get name"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\Wbem\WMIC.exewmic cpu get name3⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 892 -s 1402⤵
- Program crash
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C:\Users\Admin\AppData\Local\Temp\3D2A.exeC:\Users\Admin\AppData\Local\Temp\3D2A.exe1⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\4019.dll1⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\4019.dll2⤵
- Loads dropped DLL
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C:\Windows\SysWOW64\explorer.exeC:\Windows\SysWOW64\explorer.exe1⤵
- Accesses Microsoft Outlook profiles
- outlook_office_path
- outlook_win_path
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C:\Windows\explorer.exeC:\Windows\explorer.exe1⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 892 -ip 8921⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 892 -ip 8921⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 892 -ip 8921⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 892 -ip 8921⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 892 -ip 8921⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 892 -ip 8921⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 384 -p 892 -ip 8921⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 892 -ip 8921⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 892 -ip 8921⤵
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C:\Users\Admin\AppData\Local\Temp\B431.exeC:\Users\Admin\AppData\Local\Temp\B431.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
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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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C:\Users\Admin\AppData\Local\Temp\B897.exeC:\Users\Admin\AppData\Local\Temp\B897.exe1⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\C0E5.exeC:\Users\Admin\AppData\Local\Temp\C0E5.exe1⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\explorer.exeC:\Windows\SysWOW64\explorer.exe1⤵
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C:\Windows\explorer.exeC:\Windows\explorer.exe1⤵
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C:\Windows\SysWOW64\explorer.exeC:\Windows\SysWOW64\explorer.exe1⤵
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C:\Windows\explorer.exeC:\Windows\explorer.exe1⤵
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C:\Windows\SysWOW64\explorer.exeC:\Windows\SysWOW64\explorer.exe1⤵
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C:\Windows\SysWOW64\explorer.exeC:\Windows\SysWOW64\explorer.exe1⤵
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C:\Windows\SysWOW64\explorer.exeC:\Windows\SysWOW64\explorer.exe1⤵
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C:\Windows\explorer.exeC:\Windows\explorer.exe1⤵
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C:\Windows\SysWOW64\explorer.exeC:\Windows\SysWOW64\explorer.exe1⤵
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
mozglue.dll
nss3.dll
07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
3652.exe
3652.exe
3652.exe
3652.exe
3652.exe
3652.exe
3B35.exe
3B35.exe
3D2A.exe
3D2A.exe
4019.dll
4019.dll
B431.exe
B431.exe
B897.exe
B897.exe
C0E5.exe
C0E5.exe
build2.exe
build2.exe
build2.exe
build3.exe
build3.exe
mstsca.exe
mstsca.exe
memory/176-190-0x0000000000400000-0x0000000000537000-memory.dmp
memory/176-192-0x0000000000400000-0x0000000000537000-memory.dmp
memory/176-193-0x0000000000400000-0x0000000000537000-memory.dmp
memory/176-240-0x0000000000400000-0x0000000000537000-memory.dmp
memory/892-173-0x0000000002F40000-0x0000000003387000-memory.dmp
memory/892-198-0x0000000000400000-0x00000000008AE000-memory.dmp
memory/892-174-0x0000000000400000-0x00000000008AE000-memory.dmp
memory/1616-268-0x00000000005A0000-0x00000000005AB000-memory.dmp
memory/1616-281-0x00000000005B0000-0x00000000005B6000-memory.dmp
memory/1616-267-0x00000000005B0000-0x00000000005B6000-memory.dmp
memory/2264-166-0x0000000000530000-0x000000000059B000-memory.dmp
memory/2264-152-0x0000000000530000-0x000000000059B000-memory.dmp
memory/2264-151-0x0000000000800000-0x0000000000875000-memory.dmp
memory/2284-280-0x0000000000780000-0x0000000000785000-memory.dmp
memory/2284-264-0x0000000000780000-0x0000000000785000-memory.dmp
memory/2284-265-0x0000000000770000-0x0000000000779000-memory.dmp
memory/2572-271-0x0000000000DA0000-0x0000000000DAD000-memory.dmp
memory/2572-270-0x0000000000DB0000-0x0000000000DB7000-memory.dmp
memory/2572-282-0x0000000000DB0000-0x0000000000DB7000-memory.dmp
memory/3040-164-0x0000000002A00000-0x0000000002B6E000-memory.dmp
memory/3040-165-0x0000000002CA0000-0x0000000002DCD000-memory.dmp
memory/3040-178-0x0000000002CA0000-0x0000000002DCD000-memory.dmp
memory/3040-170-0x0000000002DD0000-0x0000000002E92000-memory.dmp
memory/3040-175-0x0000000002EA0000-0x0000000002F4C000-memory.dmp
memory/3084-161-0x000000000083D000-0x000000000084D000-memory.dmp
memory/3084-154-0x0000000000680000-0x0000000000689000-memory.dmp
memory/3084-155-0x0000000000400000-0x0000000000580000-memory.dmp
memory/3084-169-0x0000000000400000-0x0000000000580000-memory.dmp
memory/3552-191-0x00000000021C1000-0x0000000002252000-memory.dmp
memory/3700-279-0x0000000000F80000-0x0000000000FA2000-memory.dmp
memory/3700-261-0x0000000000F80000-0x0000000000FA2000-memory.dmp
memory/3700-262-0x0000000000F50000-0x0000000000F77000-memory.dmp
memory/3752-273-0x0000000000E60000-0x0000000000E68000-memory.dmp
memory/3752-283-0x0000000000E60000-0x0000000000E68000-memory.dmp
memory/3752-274-0x0000000000E50000-0x0000000000E5B000-memory.dmp
memory/3916-208-0x00000000021C0000-0x000000000220A000-memory.dmp
memory/3916-206-0x000000000066D000-0x0000000000699000-memory.dmp
memory/4108-153-0x0000000000A90000-0x0000000000A9C000-memory.dmp
memory/4196-160-0x00000000020C5000-0x0000000002156000-memory.dmp
memory/4196-162-0x0000000002250000-0x000000000236B000-memory.dmp
memory/4268-249-0x0000000000F60000-0x0000000000F67000-memory.dmp
memory/4268-275-0x0000000000F60000-0x0000000000F67000-memory.dmp
memory/4268-250-0x0000000000F50000-0x0000000000F5B000-memory.dmp
memory/4312-203-0x0000000000400000-0x000000000045E000-memory.dmp
memory/4312-247-0x0000000000400000-0x000000000045E000-memory.dmp
memory/4312-207-0x0000000000400000-0x000000000045E000-memory.dmp
memory/4312-213-0x0000000000400000-0x000000000045E000-memory.dmp
memory/4312-214-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/4440-253-0x0000000000C10000-0x0000000000C1F000-memory.dmp
memory/4440-276-0x0000000000C20000-0x0000000000C29000-memory.dmp
memory/4440-252-0x0000000000C20000-0x0000000000C29000-memory.dmp
memory/4736-258-0x0000000000BF0000-0x0000000000BF6000-memory.dmp
memory/4736-278-0x0000000000BF0000-0x0000000000BF6000-memory.dmp
memory/4736-259-0x0000000000BE0000-0x0000000000BEC000-memory.dmp
memory/4788-135-0x0000000000400000-0x0000000000581000-memory.dmp
memory/4788-134-0x0000000000400000-0x0000000000581000-memory.dmp
memory/4788-133-0x0000000000610000-0x0000000000619000-memory.dmp
memory/4788-132-0x000000000063D000-0x000000000064D000-memory.dmp
memory/4848-255-0x00000000005C0000-0x00000000005C5000-memory.dmp
memory/4848-277-0x00000000005C0000-0x00000000005C5000-memory.dmp
memory/4848-256-0x00000000005B0000-0x00000000005B9000-memory.dmp
memory/5080-167-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5080-157-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5080-159-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5080-172-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5080-181-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5080-163-0x0000000000400000-0x0000000000537000-memory.dmp