Analysis
- max time kernel
152s - max time network
168s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
11/10/2022, 04:31
General
- Target file.exe
- Size 211KB
- Sample221011-e5dneaeghk
- SHA256 a3a2bfd26612b25ebcecf081889b529c4eacfd4a3df6c56dab48cfd83c5d3b88
Malware Config
Extracted
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djvu
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http://winnlinne.com/lancer/get.php
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extension
.towz
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offline_id
SSHsHMHGmSIhrz50VnIxLJJX15osxEQY6iXedXt1
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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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redline
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buildnewdomain
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hrabrlonian.xyz:81
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auth_value
90794203993789d187f29ff50d00de2e
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 10 IoCs
- Detects Smokeloader packer 2 IoCs
- Djvu Ransomware
Ransomware which is a variant of the STOP family.
- RedLine
RedLine Stealer is a malware family written in C#, first appearing in early 2020.
- RedLine payload 1 IoCs
- SmokeLoader
Modular backdoor trojan in use since 2014.
- Vidar
Vidar is an infostealer based on Arkei stealer.
- Downloads MZ/PE file
- Executes dropped EXE 12 IoCs
- Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
- Loads dropped DLL 10 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 3 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 4 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of SetThreadContext 4 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Program crash 5 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 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Enumerates processes with tasklist 1 TTPs 2 IoCs
- Runs ping.exe 1 TTPs 2 IoCs
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 6 IoCs
- Suspicious use of AdjustPrivilegeToken 47 IoCs
- Suspicious use of FindShellTrayWindow 7 IoCs
- Suspicious use of SendNotifyMessage 3 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\FC08.exeC:\Users\Admin\AppData\Local\Temp\FC08.exe1⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 748 -s 5362⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 748 -s 5402⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 748 -s 5602⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 748 -s 6162⤵
- Program crash
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C:\Users\Admin\AppData\Local\Temp\12A.exeC:\Users\Admin\AppData\Local\Temp\12A.exe1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\12A.exeC:\Users\Admin\AppData\Local\Temp\12A.exe2⤵
- Executes dropped EXE
- Checks computer location settings
- Adds Run key to start application
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C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\3950f4f3-bca0-45c3-a8bf-66109350049d" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
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C:\Users\Admin\AppData\Local\Temp\12A.exe"C:\Users\Admin\AppData\Local\Temp\12A.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
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C:\Users\Admin\AppData\Local\Temp\12A.exe"C:\Users\Admin\AppData\Local\Temp\12A.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Executes dropped EXE
- Checks computer location settings
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C:\Users\Admin\AppData\Local\bc3d8f9b-3d63-4e8a-a0a9-a128088cce8c\build2.exe"C:\Users\Admin\AppData\Local\bc3d8f9b-3d63-4e8a-a0a9-a128088cce8c\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
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C:\Users\Admin\AppData\Local\bc3d8f9b-3d63-4e8a-a0a9-a128088cce8c\build2.exe"C:\Users\Admin\AppData\Local\bc3d8f9b-3d63-4e8a-a0a9-a128088cce8c\build2.exe"6⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
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C:\Users\Admin\AppData\Local\bc3d8f9b-3d63-4e8a-a0a9-a128088cce8c\build3.exe"C:\Users\Admin\AppData\Local\bc3d8f9b-3d63-4e8a-a0a9-a128088cce8c\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\32E.dll1⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\32E.dll2⤵
- Loads dropped DLL
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C:\Users\Admin\AppData\Local\Temp\5CF.exeC:\Users\Admin\AppData\Local\Temp\5CF.exe1⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4800 -s 3402⤵
- Program crash
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C:\Users\Admin\AppData\Local\Temp\9F7.exeC:\Users\Admin\AppData\Local\Temp\9F7.exe1⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
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C:\Users\Admin\AppData\Local\Temp\D05.exeC:\Users\Admin\AppData\Local\Temp\D05.exe1⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\ftp.exeftp /?2⤵
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C:\Windows\SysWOW64\cmd.execmd /c cmd < Preferences.vsd & ping -n 5 localhost2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.execmd3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\tasklist.exetasklist /FI "imagename eq AvastUI.exe"4⤵
- Enumerates processes with tasklist
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\find.exefind /I /N "avastui.exe"4⤵
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C:\Windows\SysWOW64\tasklist.exetasklist /FI "imagename eq AVGUI.exe"4⤵
- Enumerates processes with tasklist
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\find.exefind /I /N "avgui.exe"4⤵
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C:\Windows\SysWOW64\findstr.exefindstr /V /R "^zsXAL$" Simulation.vsd4⤵
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C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Bags.exe.pifBags.exe.pif f4⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe5⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\PING.EXEping localhost -n 54⤵
- Runs ping.exe
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C:\Windows\SysWOW64\PING.EXEping -n 5 localhost3⤵
- Runs ping.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:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4800 -ip 48001⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 748 -ip 7481⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 748 -ip 7481⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 748 -ip 7481⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 748 -ip 7481⤵
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
12A.exe
12A.exe
12A.exe
12A.exe
12A.exe
12A.exe
32E.dll
32E.dll
32E.dll
5CF.exe
5CF.exe
9F7.exe
9F7.exe
D05.exe
FC08.exe
FC08.exe
Bags.exe.pif
Bags.exe.pif
Euros.vsd
Preferences.vsd
Simulation.vsd
kprGKGWkWrUJt.dll
kprGKGWkWrUJt.dll
kprGKGWkWrUJt.dll
kprGKGWkWrUJt.dll
kprGKGWkWrUJt.dll
kprGKGWkWrUJt.dll
build2.exe
build2.exe
build2.exe
build3.exe
build3.exe
memory/748-200-0x0000000000400000-0x00000000009A0000-memory.dmp
memory/748-201-0x0000000000400000-0x00000000009A0000-memory.dmp
memory/748-199-0x00000000032F0000-0x000000000380F000-memory.dmp
memory/1068-216-0x00000000009FD000-0x0000000000A8E000-memory.dmp
memory/2124-238-0x0000000000400000-0x000000000045E000-memory.dmp
memory/2124-236-0x0000000000400000-0x000000000045E000-memory.dmp
memory/2124-232-0x0000000000400000-0x000000000045E000-memory.dmp
memory/2124-243-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/2124-261-0x0000000000400000-0x000000000045E000-memory.dmp
memory/2516-266-0x0000000004AA0000-0x0000000004BAA000-memory.dmp
memory/2516-269-0x00000000063C0000-0x0000000006964000-memory.dmp
memory/2516-265-0x0000000004F50000-0x0000000005568000-memory.dmp
memory/2516-220-0x0000000000400000-0x0000000000428000-memory.dmp
memory/2516-271-0x0000000005F90000-0x0000000005FF6000-memory.dmp
memory/2516-270-0x0000000005EF0000-0x0000000005F82000-memory.dmp
memory/2516-272-0x0000000006B40000-0x0000000006D02000-memory.dmp
memory/2516-273-0x0000000007240000-0x000000000776C000-memory.dmp
memory/2516-267-0x00000000049D0000-0x00000000049E2000-memory.dmp
memory/2516-268-0x0000000004A30000-0x0000000004A6C000-memory.dmp
memory/2832-214-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2832-213-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2832-239-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2832-218-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3096-168-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3096-170-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3096-174-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3096-208-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3096-172-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3100-155-0x0000000002960000-0x0000000002A55000-memory.dmp
memory/3100-154-0x0000000002760000-0x0000000002857000-memory.dmp
memory/3100-178-0x0000000002A60000-0x0000000002B29000-memory.dmp
memory/3100-179-0x0000000002B40000-0x0000000002BF5000-memory.dmp
memory/3100-147-0x0000000002300000-0x000000000246B000-memory.dmp
memory/3100-180-0x0000000002B40000-0x0000000002BF5000-memory.dmp
memory/3100-182-0x0000000002960000-0x0000000002A55000-memory.dmp
memory/3124-235-0x000000000086E000-0x000000000089A000-memory.dmp
memory/3124-237-0x00000000021F0000-0x000000000223A000-memory.dmp
memory/3180-164-0x00000000006CD000-0x00000000006DD000-memory.dmp
memory/3180-165-0x00000000021A0000-0x00000000021A9000-memory.dmp
memory/3180-166-0x0000000000400000-0x0000000000592000-memory.dmp
memory/3180-186-0x0000000000400000-0x0000000000592000-memory.dmp
memory/4144-171-0x000000000085D000-0x00000000008EE000-memory.dmp
memory/4144-173-0x0000000002290000-0x00000000023AB000-memory.dmp
memory/4376-132-0x00000000007CD000-0x00000000007DE000-memory.dmp
memory/4376-135-0x0000000000400000-0x0000000000592000-memory.dmp
memory/4376-133-0x00000000006F0000-0x00000000006F9000-memory.dmp
memory/4376-134-0x0000000000400000-0x0000000000592000-memory.dmp
memory/4784-163-0x0000000000760000-0x000000000076C000-memory.dmp
memory/4800-177-0x0000000000400000-0x0000000000449000-memory.dmp
memory/4800-176-0x0000000000537000-0x0000000000547000-memory.dmp
memory/5084-160-0x0000000000720000-0x000000000078B000-memory.dmp
memory/5084-175-0x0000000000720000-0x000000000078B000-memory.dmp
memory/5084-159-0x0000000000A00000-0x0000000000A75000-memory.dmp