Analysis
- max time kernel
150s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
18/10/2022, 01:31
General
- Target file.exe
- Size 217KB
- Sample221018-bxdfwsecam
- SHA256 7070e0af190385c557909c19ea9707d2a294f1d49a69a72f8f0c16e68eff26a6
Malware Config
Extracted
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djvu
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http://winnlinne.com/lancer/get.php
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extension
.tury
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offline_id
Uz66zEbmA32arcxwT81zZhkb23026oHz5iSp8qt1
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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
-
55
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517
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https://t.me/truewallets
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https://mas.to/@zara99
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http://116.203.10.3:80
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profile_id
517
Signatures
- Detected Djvu ransomware 10 IoCs
- Detects Smokeloader packer 4 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 3 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 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 3 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.
- Delays execution with timeout.exe 1 IoCs
- Kills process with taskkill 1 IoCs
- Modifies registry class 3 IoCs
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 24 IoCs
- Suspicious use of AdjustPrivilegeToken 36 IoCs
- Suspicious use of FindShellTrayWindow 2 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\E331.exeC:\Users\Admin\AppData\Local\Temp\E331.exe1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\E331.exeC:\Users\Admin\AppData\Local\Temp\E331.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\5b16484a-f7dc-4310-bf2e-b6cd3942dcca" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
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C:\Users\Admin\AppData\Local\Temp\E331.exe"C:\Users\Admin\AppData\Local\Temp\E331.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\E331.exe"C:\Users\Admin\AppData\Local\Temp\E331.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\384fc338-e6a9-4688-9ed9-c8e5c16e3e21\build2.exe"C:\Users\Admin\AppData\Local\384fc338-e6a9-4688-9ed9-c8e5c16e3e21\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\384fc338-e6a9-4688-9ed9-c8e5c16e3e21\build2.exe"C:\Users\Admin\AppData\Local\384fc338-e6a9-4688-9ed9-c8e5c16e3e21\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" 116.202.186.42/c taskkill /im build2.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\384fc338-e6a9-4688-9ed9-c8e5c16e3e21\build2.exe" & del C:\PrograData\*.dll & exit7⤵
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C:\Windows\SysWOW64\taskkill.exetaskkill /im build2.exe /f8⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
-
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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\384fc338-e6a9-4688-9ed9-c8e5c16e3e21\build3.exe"C:\Users\Admin\AppData\Local\384fc338-e6a9-4688-9ed9-c8e5c16e3e21\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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-
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C:\Users\Admin\AppData\Local\Temp\E68D.exeC:\Users\Admin\AppData\Local\Temp\E68D.exe1⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
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C:\Users\Admin\AppData\Local\Temp\E91E.exeC:\Users\Admin\AppData\Local\Temp\E91E.exe1⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1668 -s 3402⤵
- Program crash
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C:\Users\Admin\AppData\Local\Temp\EAC5.exeC:\Users\Admin\AppData\Local\Temp\EAC5.exe1⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4256 -s 3402⤵
- Program crash
-
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C:\Users\Admin\AppData\Local\Temp\EF0C.exeC:\Users\Admin\AppData\Local\Temp\EF0C.exe1⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1668 -ip 16681⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 4256 -ip 42561⤵
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C:\Users\Admin\AppData\Local\Temp\F3B1.exeC:\Users\Admin\AppData\Local\Temp\F3B1.exe1⤵
- Executes dropped EXE
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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:\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\7DA2.exeC:\Users\Admin\AppData\Local\Temp\7DA2.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4288 -s 14242⤵
- Program crash
-
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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⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 580 -p 4288 -ip 42881⤵
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
build2.exe
build2.exe
build2.exe
build3.exe
build3.exe
E331.exe
7DA2.exe
7DA2.exe
E331.exe
E331.exe
E331.exe
E331.exe
E331.exe
E68D.exe
E68D.exe
E91E.exe
E91E.exe
EAC5.exe
EAC5.exe
EF0C.exe
EF0C.exe
F3B1.exe
F3B1.exe
mstsca.exe
mstsca.exe
memory/632-279-0x0000000000170000-0x0000000000179000-memory.dmp
memory/632-278-0x0000000000180000-0x0000000000185000-memory.dmp
memory/708-271-0x0000000000900000-0x000000000090C000-memory.dmp
memory/708-270-0x0000000000910000-0x0000000000916000-memory.dmp
memory/1128-186-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1128-152-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1128-145-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1128-143-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1128-148-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1488-200-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1488-236-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1488-193-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1488-192-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1640-162-0x0000000140000000-0x000000014060E000-memory.dmp
memory/1668-167-0x00000000001F0000-0x00000000001F9000-memory.dmp
memory/1668-166-0x0000000000963000-0x0000000000974000-memory.dmp
memory/1668-168-0x0000000000400000-0x0000000000594000-memory.dmp
memory/2092-177-0x0000000140000000-0x000000014060E000-memory.dmp
memory/2284-259-0x00000000003B0000-0x00000000003B9000-memory.dmp
memory/2284-260-0x00000000003A0000-0x00000000003AF000-memory.dmp
memory/2912-209-0x0000000000700000-0x000000000074F000-memory.dmp
memory/2912-207-0x00000000007ED000-0x0000000000819000-memory.dmp
memory/2912-262-0x00000000001E0000-0x00000000001E5000-memory.dmp
memory/2912-263-0x00000000001D0000-0x00000000001D9000-memory.dmp
memory/2972-182-0x0000000000EA0000-0x0000000000F0B000-memory.dmp
memory/2972-287-0x0000000000F60000-0x0000000000F68000-memory.dmp
memory/2972-188-0x0000000000EA0000-0x0000000000F0B000-memory.dmp
memory/2972-181-0x0000000000F10000-0x0000000000F85000-memory.dmp
memory/2972-288-0x0000000000F50000-0x0000000000F5B000-memory.dmp
memory/3048-156-0x0000000000783000-0x0000000000794000-memory.dmp
memory/3048-195-0x0000000000400000-0x0000000000594000-memory.dmp
memory/3048-158-0x0000000000400000-0x0000000000594000-memory.dmp
memory/3048-157-0x00000000001F0000-0x00000000001F9000-memory.dmp
memory/3108-146-0x00000000008CD000-0x000000000095F000-memory.dmp
memory/3108-147-0x0000000002210000-0x000000000232B000-memory.dmp
memory/3188-239-0x0000000000400000-0x0000000000463000-memory.dmp
memory/3188-211-0x0000000000400000-0x0000000000463000-memory.dmp
memory/3188-216-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/3188-210-0x0000000000400000-0x0000000000463000-memory.dmp
memory/3188-205-0x0000000000400000-0x0000000000463000-memory.dmp
memory/3232-132-0x0000000000703000-0x0000000000714000-memory.dmp
memory/3232-133-0x00000000001F0000-0x00000000001F9000-memory.dmp
memory/3232-134-0x0000000000400000-0x0000000000594000-memory.dmp
memory/3232-135-0x0000000000400000-0x0000000000594000-memory.dmp
memory/4256-169-0x0000000000873000-0x0000000000884000-memory.dmp
memory/4256-171-0x0000000000400000-0x0000000000594000-memory.dmp
memory/4288-252-0x0000000000400000-0x00000000005B9000-memory.dmp
memory/4288-264-0x0000000005DE0000-0x0000000005E72000-memory.dmp
memory/4288-255-0x0000000005310000-0x0000000005928000-memory.dmp
memory/4288-256-0x00000000059A0000-0x00000000059B2000-memory.dmp
memory/4288-257-0x00000000059C0000-0x0000000005ACA000-memory.dmp
memory/4288-258-0x0000000005AD0000-0x0000000005B0C000-memory.dmp
memory/4288-251-0x0000000002200000-0x0000000002259000-memory.dmp
memory/4288-250-0x0000000000713000-0x0000000000749000-memory.dmp
memory/4288-274-0x00000000070F0000-0x000000000710E000-memory.dmp
memory/4288-272-0x0000000007050000-0x00000000070C6000-memory.dmp
memory/4288-253-0x0000000004D10000-0x00000000052B4000-memory.dmp
memory/4288-265-0x0000000005E80000-0x0000000005EE6000-memory.dmp
memory/4288-290-0x0000000000400000-0x00000000005B9000-memory.dmp
memory/4288-267-0x00000000066D0000-0x0000000006892000-memory.dmp
memory/4288-268-0x00000000068A0000-0x0000000006DCC000-memory.dmp
memory/4288-269-0x0000000006FE0000-0x0000000007030000-memory.dmp
memory/4288-289-0x0000000000713000-0x0000000000749000-memory.dmp
memory/4460-248-0x0000000000550000-0x0000000000557000-memory.dmp
memory/4460-291-0x0000000000550000-0x0000000000557000-memory.dmp
memory/4460-249-0x0000000000540000-0x000000000054B000-memory.dmp
memory/4500-187-0x0000000000E80000-0x0000000000E8C000-memory.dmp
memory/4624-284-0x0000000000720000-0x0000000000727000-memory.dmp
memory/4624-285-0x0000000000710000-0x000000000071D000-memory.dmp
memory/4636-282-0x00000000007E0000-0x00000000007EB000-memory.dmp
memory/4636-281-0x00000000007F0000-0x00000000007F6000-memory.dmp
memory/4792-275-0x0000000000EF0000-0x0000000000F12000-memory.dmp
memory/4792-276-0x0000000000EC0000-0x0000000000EE7000-memory.dmp
memory/5012-194-0x000000000078C000-0x000000000081E000-memory.dmp