Analysis
- max time kernel
150s - max time network
137s - platform
windows10-2004_x64 - resource
win10v2004-20220901-en - resource tags
- submitted
19/10/2022, 04:30
General
- Target file.exe
- Size 230KB
- Sample221019-e47j4afbhn
- SHA256 bd7b0c0b026f35411204a1df181fd5a633e24fbf47c165b04f9ee7e22ae8f886
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
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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 18 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 20 IoCs
- Checks computer location settings 2 TTPs 5 IoCs
Looks up country code configured in the registry, likely geofence.
- Loads dropped DLL 4 IoCs
- Modifies file permissions 1 TTPs 2 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 2 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 5 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of SetThreadContext 6 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Program crash 1 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
- Kills process with taskkill 1 IoCs
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 24 IoCs
- Suspicious use of AdjustPrivilegeToken 28 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\248F.exeC:\Users\Admin\AppData\Local\Temp\248F.exe1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\248F.exeC:\Users\Admin\AppData\Local\Temp\248F.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\d52106fb-8a3a-42ef-b4ec-dedd8cd8969f" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
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C:\Users\Admin\AppData\Local\Temp\248F.exe"C:\Users\Admin\AppData\Local\Temp\248F.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\248F.exe"C:\Users\Admin\AppData\Local\Temp\248F.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Executes dropped EXE
- Checks computer location settings
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C:\Users\Admin\AppData\Local\602915d0-bb33-4e01-81b0-74f763b460e6\build2.exe"C:\Users\Admin\AppData\Local\602915d0-bb33-4e01-81b0-74f763b460e6\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
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C:\Users\Admin\AppData\Local\602915d0-bb33-4e01-81b0-74f763b460e6\build2.exe"C:\Users\Admin\AppData\Local\602915d0-bb33-4e01-81b0-74f763b460e6\build2.exe"6⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\602915d0-bb33-4e01-81b0-74f763b460e6\build3.exe"C:\Users\Admin\AppData\Local\602915d0-bb33-4e01-81b0-74f763b460e6\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:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\2694.dll1⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\2694.dll2⤵
- Loads dropped DLL
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C:\Users\Admin\AppData\Local\Temp\279E.exeC:\Users\Admin\AppData\Local\Temp\279E.exe1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\279E.exeC:\Users\Admin\AppData\Local\Temp\279E.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\dce65744-a479-4b81-8a94-a58e62608812" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
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C:\Users\Admin\AppData\Local\Temp\279E.exe"C:\Users\Admin\AppData\Local\Temp\279E.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\279E.exe"C:\Users\Admin\AppData\Local\Temp\279E.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Executes dropped EXE
- Checks computer location settings
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C:\Users\Admin\AppData\Local\1f10c1cc-1cb4-4a89-b91a-f5cb77672868\build2.exe"C:\Users\Admin\AppData\Local\1f10c1cc-1cb4-4a89-b91a-f5cb77672868\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
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C:\Users\Admin\AppData\Local\1f10c1cc-1cb4-4a89-b91a-f5cb77672868\build2.exe"C:\Users\Admin\AppData\Local\1f10c1cc-1cb4-4a89-b91a-f5cb77672868\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" xp/c taskkill /im build2.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\1f10c1cc-1cb4-4a89-b91a-f5cb77672868\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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C:\Users\Admin\AppData\Local\1f10c1cc-1cb4-4a89-b91a-f5cb77672868\build3.exe"C:\Users\Admin\AppData\Local\1f10c1cc-1cb4-4a89-b91a-f5cb77672868\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\29D2.exeC:\Users\Admin\AppData\Local\Temp\29D2.exe1⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
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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\Local\Temp\D044.exeC:\Users\Admin\AppData\Local\Temp\D044.exe1⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\EBFB.exeC:\Users\Admin\AppData\Local\Temp\EBFB.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4756 -s 12642⤵
- Program crash
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C:\Users\Admin\AppData\Local\Temp\F562.exeC:\Users\Admin\AppData\Local\Temp\F562.exe1⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\F8CE.exeC:\Users\Admin\AppData\Local\Temp\F8CE.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\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4756 -ip 47561⤵
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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:\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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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
mozglue.dll
nss3.dll
PersonalID.txt
07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
build2.exe
build2.exe
build2.exe
build3.exe
build3.exe
build2.exe
build2.exe
build2.exe
build3.exe
build3.exe
248F.exe
248F.exe
248F.exe
248F.exe
248F.exe
2694.dll
2694.dll
2694.dll
279E.exe
279E.exe
279E.exe
279E.exe
279E.exe
29D2.exe
29D2.exe
D044.exe
D044.exe
EBFB.exe
EBFB.exe
F562.exe
F562.exe
F8CE.exe
F8CE.exe
bowsakkdestx.txt
248F.exe
279E.exe
mstsca.exe
mstsca.exe
mstsca.exe
memory/540-171-0x0000000001FFD000-0x000000000208E000-memory.dmp
memory/808-178-0x0000000000400000-0x0000000000537000-memory.dmp
memory/808-188-0x0000000000400000-0x0000000000537000-memory.dmp
memory/808-170-0x0000000000400000-0x0000000000537000-memory.dmp
memory/808-172-0x0000000000400000-0x0000000000537000-memory.dmp
memory/968-259-0x0000000000A60000-0x0000000000A69000-memory.dmp
memory/968-258-0x0000000000A70000-0x0000000000A75000-memory.dmp
memory/1192-160-0x0000000000800000-0x000000000086B000-memory.dmp
memory/1192-153-0x0000000000800000-0x000000000086B000-memory.dmp
memory/1192-152-0x0000000000870000-0x00000000008E5000-memory.dmp
memory/1344-250-0x0000000000A30000-0x0000000000A39000-memory.dmp
memory/1344-249-0x0000000000A40000-0x0000000000A45000-memory.dmp
memory/1716-155-0x00000000007F0000-0x00000000007FC000-memory.dmp
memory/1952-158-0x00000000035A0000-0x00000000036B4000-memory.dmp
memory/1952-200-0x00000000013E0000-0x000000000148D000-memory.dmp
memory/1952-199-0x0000000003900000-0x00000000039C2000-memory.dmp
memory/1952-159-0x00000000037E0000-0x00000000038F4000-memory.dmp
memory/1952-210-0x00000000037E0000-0x00000000038F4000-memory.dmp
memory/1952-147-0x0000000002D40000-0x0000000002F4B000-memory.dmp
memory/2128-208-0x0000000001F85000-0x0000000002016000-memory.dmp
memory/2228-252-0x0000000000EA0000-0x0000000000EA6000-memory.dmp
memory/2228-253-0x0000000000E90000-0x0000000000E9C000-memory.dmp
memory/2584-183-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2584-182-0x0000000000580000-0x0000000000589000-memory.dmp
memory/2584-181-0x0000000000778000-0x0000000000789000-memory.dmp
memory/2664-265-0x0000000000AF0000-0x0000000000AFB000-memory.dmp
memory/2664-264-0x0000000000B00000-0x0000000000B06000-memory.dmp
memory/2976-133-0x0000000000670000-0x0000000000679000-memory.dmp
memory/2976-134-0x0000000000400000-0x0000000000597000-memory.dmp
memory/2976-135-0x0000000000400000-0x0000000000597000-memory.dmp
memory/2976-132-0x00000000006A3000-0x00000000006B4000-memory.dmp
memory/2976-256-0x0000000000A10000-0x0000000000A37000-memory.dmp
memory/2976-255-0x0000000000A40000-0x0000000000A62000-memory.dmp
memory/3132-277-0x000000000092D000-0x0000000000959000-memory.dmp
memory/3132-271-0x0000000000880000-0x00000000008CF000-memory.dmp
memory/3156-156-0x0000000000816000-0x00000000008A8000-memory.dmp
memory/3156-157-0x0000000002240000-0x000000000235B000-memory.dmp
memory/3992-243-0x0000000000F90000-0x0000000000F99000-memory.dmp
memory/3992-244-0x0000000000F80000-0x0000000000F8F000-memory.dmp
memory/4356-270-0x0000000000C90000-0x0000000000C9D000-memory.dmp
memory/4356-269-0x0000000000CA0000-0x0000000000CA7000-memory.dmp
memory/4528-198-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4528-195-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4528-197-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4528-216-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4560-207-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4560-217-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4560-206-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4560-209-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4568-191-0x00000000006F2000-0x0000000000784000-memory.dmp
memory/4568-196-0x00000000006F2000-0x0000000000784000-memory.dmp
memory/4704-279-0x0000000000400000-0x0000000000463000-memory.dmp
memory/4704-274-0x0000000000400000-0x0000000000463000-memory.dmp
memory/4704-290-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/4704-278-0x0000000000400000-0x0000000000463000-memory.dmp
memory/4720-164-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4720-187-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4720-162-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4720-166-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4720-165-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4756-223-0x0000000004F40000-0x00000000054E4000-memory.dmp
memory/4756-267-0x00000000008D3000-0x000000000090A000-memory.dmp
memory/4756-222-0x0000000000720000-0x0000000000779000-memory.dmp
memory/4756-224-0x0000000000400000-0x00000000005B9000-memory.dmp
memory/4756-236-0x0000000005DE0000-0x0000000005E72000-memory.dmp
memory/4756-221-0x00000000008D3000-0x000000000090A000-memory.dmp
memory/4756-229-0x0000000004DC0000-0x0000000004DD2000-memory.dmp
memory/4756-230-0x0000000004DE0000-0x0000000004EEA000-memory.dmp
memory/4756-228-0x00000000054F0000-0x0000000005B08000-memory.dmp
memory/4756-268-0x0000000000400000-0x00000000005B9000-memory.dmp
memory/4756-237-0x0000000005E80000-0x0000000005EE6000-memory.dmp
memory/4756-240-0x00000000067A0000-0x0000000006816000-memory.dmp
memory/4756-242-0x0000000006860000-0x000000000687E000-memory.dmp
memory/4756-234-0x0000000004EF0000-0x0000000004F2C000-memory.dmp
memory/4756-248-0x00000000078C0000-0x0000000007DEC000-memory.dmp
memory/4756-245-0x0000000006910000-0x0000000006960000-memory.dmp
memory/4756-246-0x00000000076F0000-0x00000000078B2000-memory.dmp
memory/4828-238-0x00000000008E0000-0x00000000008E7000-memory.dmp
memory/4828-239-0x00000000008D0000-0x00000000008DB000-memory.dmp