Analysis
- max time kernel
151s - max time network
143s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
17/10/2022, 22:31
General
- Target file.exe
- Size 217KB
- Sample221017-2fcq5sdffq
- SHA256 7ee56613bbe0ced00452fd4cb3582d8b5f27e2a43167db8152719ec4e00c7fee
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
-
ransomnote
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Extracted
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vidar
-
55
-
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 5 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
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 24 IoCs
- Suspicious use of AdjustPrivilegeToken 22 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\CD76.exeC:\Users\Admin\AppData\Local\Temp\CD76.exe1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\CD76.exeC:\Users\Admin\AppData\Local\Temp\CD76.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\e2b7f364-ea0e-48cc-8d43-9b990e361e6f" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
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C:\Users\Admin\AppData\Local\Temp\CD76.exe"C:\Users\Admin\AppData\Local\Temp\CD76.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\CD76.exe"C:\Users\Admin\AppData\Local\Temp\CD76.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\ae006394-69b5-4bc2-b0b5-6c290f7cb18b\build2.exe"C:\Users\Admin\AppData\Local\ae006394-69b5-4bc2-b0b5-6c290f7cb18b\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\ae006394-69b5-4bc2-b0b5-6c290f7cb18b\build2.exe"C:\Users\Admin\AppData\Local\ae006394-69b5-4bc2-b0b5-6c290f7cb18b\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/c taskkill /im build2.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\ae006394-69b5-4bc2-b0b5-6c290f7cb18b\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\ae006394-69b5-4bc2-b0b5-6c290f7cb18b\build3.exe"C:\Users\Admin\AppData\Local\ae006394-69b5-4bc2-b0b5-6c290f7cb18b\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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C:\Users\Admin\AppData\Local\Temp\D18E.exeC:\Users\Admin\AppData\Local\Temp\D18E.exe1⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
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C:\Users\Admin\AppData\Local\Temp\D4AC.exeC:\Users\Admin\AppData\Local\Temp\D4AC.exe1⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 720 -s 3402⤵
- Program crash
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-
C:\Users\Admin\AppData\Local\Temp\D6B1.exeC:\Users\Admin\AppData\Local\Temp\D6B1.exe1⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3640 -s 3402⤵
- Program crash
-
-
C:\Users\Admin\AppData\Local\Temp\D971.exeC:\Users\Admin\AppData\Local\Temp\D971.exe1⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 720 -ip 7201⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 3640 -ip 36401⤵
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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:\Users\Admin\AppData\Local\Temp\E077.exeC:\Users\Admin\AppData\Local\Temp\E077.exe1⤵
- Executes dropped EXE
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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\678A.exeC:\Users\Admin\AppData\Local\Temp\678A.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 5088 -s 12362⤵
- 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 412 -p 5088 -ip 50881⤵
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
mozglue.dll
nss3.dll
07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
678A.exe
678A.exe
CD76.exe
CD76.exe
CD76.exe
CD76.exe
CD76.exe
D18E.exe
D18E.exe
D4AC.exe
D4AC.exe
D6B1.exe
D6B1.exe
D971.exe
D971.exe
E077.exe
E077.exe
build2.exe
build2.exe
build2.exe
build3.exe
build3.exe
CD76.exe
mstsca.exe
mstsca.exe
memory/224-263-0x0000000000E80000-0x0000000000E89000-memory.dmp
memory/224-262-0x0000000000E90000-0x0000000000E95000-memory.dmp
memory/224-292-0x0000000000E90000-0x0000000000E95000-memory.dmp
memory/720-175-0x0000000000400000-0x0000000000593000-memory.dmp
memory/720-170-0x00000000007D3000-0x00000000007E4000-memory.dmp
memory/720-173-0x00000000001F0000-0x00000000001F9000-memory.dmp
memory/916-187-0x0000000000350000-0x00000000003BB000-memory.dmp
memory/916-186-0x0000000000600000-0x0000000000675000-memory.dmp
memory/1004-282-0x0000000000790000-0x0000000000797000-memory.dmp
memory/1004-283-0x0000000000780000-0x000000000078D000-memory.dmp
memory/1056-136-0x0000000000400000-0x0000000000594000-memory.dmp
memory/1056-133-0x0000000000680000-0x0000000000780000-memory.dmp
memory/1056-134-0x00000000001F0000-0x00000000001F9000-memory.dmp
memory/1056-135-0x0000000000400000-0x0000000000594000-memory.dmp
memory/1164-165-0x0000000140000000-0x000000014060E000-memory.dmp
memory/1516-192-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1516-200-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1516-194-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1516-236-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1648-205-0x0000000000400000-0x0000000000463000-memory.dmp
memory/1648-209-0x0000000000400000-0x0000000000463000-memory.dmp
memory/1648-239-0x0000000000400000-0x0000000000463000-memory.dmp
memory/1648-216-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/1648-215-0x0000000000400000-0x0000000000463000-memory.dmp
memory/2348-181-0x0000000140000000-0x000000014060E000-memory.dmp
memory/2544-188-0x0000000000D90000-0x0000000000D9C000-memory.dmp
memory/2968-276-0x00000000006C0000-0x00000000006C6000-memory.dmp
memory/2968-277-0x00000000006B0000-0x00000000006BB000-memory.dmp
memory/3064-144-0x00000000008F3000-0x0000000000985000-memory.dmp
memory/3064-149-0x0000000002330000-0x000000000244B000-memory.dmp
memory/3424-195-0x0000000000400000-0x0000000000594000-memory.dmp
memory/3424-157-0x0000000000743000-0x0000000000754000-memory.dmp
memory/3424-161-0x0000000000400000-0x0000000000594000-memory.dmp
memory/3424-159-0x00000000001F0000-0x00000000001F9000-memory.dmp
memory/3628-271-0x00000000012F0000-0x0000000001317000-memory.dmp
memory/3628-270-0x0000000001320000-0x0000000001342000-memory.dmp
memory/3640-178-0x0000000000813000-0x0000000000824000-memory.dmp
memory/3640-180-0x0000000000400000-0x0000000000594000-memory.dmp
memory/3720-287-0x0000000000890000-0x0000000000898000-memory.dmp
memory/3720-288-0x0000000000880000-0x000000000088B000-memory.dmp
memory/4156-143-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4156-146-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4156-171-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4156-141-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4156-150-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4280-248-0x0000000000780000-0x0000000000787000-memory.dmp
memory/4280-249-0x0000000000770000-0x000000000077B000-memory.dmp
memory/4280-289-0x0000000000780000-0x0000000000787000-memory.dmp
memory/4636-193-0x000000000080F000-0x00000000008A1000-memory.dmp
memory/4644-266-0x0000000000680000-0x000000000068C000-memory.dmp
memory/4644-265-0x0000000000690000-0x0000000000696000-memory.dmp
memory/4972-273-0x00000000013F0000-0x00000000013F5000-memory.dmp
memory/4972-274-0x00000000013E0000-0x00000000013E9000-memory.dmp
memory/5012-255-0x0000000000A00000-0x0000000000A09000-memory.dmp
memory/5012-256-0x00000000007F0000-0x00000000007FF000-memory.dmp
memory/5056-208-0x000000000074D000-0x0000000000779000-memory.dmp
memory/5056-210-0x00000000021D0000-0x000000000221F000-memory.dmp
memory/5088-279-0x0000000007360000-0x00000000073D6000-memory.dmp
memory/5088-250-0x0000000004D00000-0x00000000052A4000-memory.dmp
memory/5088-257-0x0000000005300000-0x0000000005918000-memory.dmp
memory/5088-253-0x0000000000750000-0x00000000007A9000-memory.dmp
memory/5088-252-0x0000000000843000-0x0000000000879000-memory.dmp
memory/5088-278-0x0000000007310000-0x0000000007360000-memory.dmp
memory/5088-261-0x0000000005AD0000-0x0000000005B0C000-memory.dmp
memory/5088-280-0x0000000007400000-0x000000000741E000-memory.dmp
memory/5088-258-0x00000000059A0000-0x00000000059B2000-memory.dmp
memory/5088-254-0x0000000000400000-0x00000000005B9000-memory.dmp
memory/5088-284-0x0000000007480000-0x0000000007642000-memory.dmp
memory/5088-285-0x0000000007670000-0x0000000007B9C000-memory.dmp
memory/5088-259-0x00000000059C0000-0x0000000005ACA000-memory.dmp
memory/5088-291-0x0000000000400000-0x00000000005B9000-memory.dmp
memory/5088-268-0x00000000064B0000-0x0000000006542000-memory.dmp
memory/5088-267-0x0000000005DE0000-0x0000000005E46000-memory.dmp
memory/5088-290-0x0000000000843000-0x0000000000879000-memory.dmp