Analysis
- max time kernel
150s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20221111-en - resource tags
- submitted
31/01/2023, 12:40
General
- Target file.exe
- Size 294KB
- Sample230131-pv9cfagc49
- SHA256 eb3b0c091e4ba48c28181e99e4e03daa4d69ef14aaa7375f718a17990afc3ce9
Malware Config
Extracted
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djvu
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http://drampik.com/lancer/get.php
-
extension
.mzop
-
offline_id
ex4uvTKsM2vEkIcr3MjXi2C6v27h1mS682iUXGt1
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payload_url
http://uaery.top/dl/build2.exe
http://drampik.com/files/1/build3.exe
-
ransomnote
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Extracted
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vidar
-
2.3
-
19
-
https://t.me/mantarlars
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https://steamcommunity.com/profiles/76561199474840123
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profile_id
19
Signatures
- Detected Djvu ransomware 11 IoCs
- Detects Smokeloader packer 3 IoCs
- Djvu Ransomware
Ransomware which is a variant of the STOP family.
- Process spawned unexpected child process 2 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
- SmokeLoader
Modular backdoor trojan in use since 2014.
- Vidar
Vidar is an infostealer based on Arkei stealer.
- Downloads MZ/PE file
- Executes dropped EXE 22 IoCs
- VMProtect packed file 6 IoCs
Detects executables packed with VMProtect commercial packer.
- Checks computer location settings 2 TTPs 8 IoCs
Looks up country code configured in the registry, likely geofence.
- Loads dropped DLL 4 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 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.
- 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 5 IoCs
- Checks SCSI registry key(s) 3 TTPs 9 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
- Script User-Agent 2 IoCs
Uses user-agent string associated with script host/environment.
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 3 IoCs
- Suspicious use of AdjustPrivilegeToken 58 IoCs
- Suspicious use of WriteProcessMemory 64 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\C604.exeC:\Users\Admin\AppData\Local\Temp\C604.exe1⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /tn "svcupdater" /tr "C:\Users\Admin\AppData\Roaming\Win32Sync\svcupdater.exe" /st 00:00 /du 9999:59 /sc once /ri 1 /f2⤵
- Creates scheduled task(s)
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 204 -s 10282⤵
- Program crash
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C:\Users\Admin\AppData\Local\Temp\C73E.exeC:\Users\Admin\AppData\Local\Temp\C73E.exe1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\C73E.exeC:\Users\Admin\AppData\Local\Temp\C73E.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\c4cfad69-9c1b-4745-9510-64c1c4d7fb7d" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
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C:\Users\Admin\AppData\Local\Temp\C73E.exe"C:\Users\Admin\AppData\Local\Temp\C73E.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
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C:\Users\Admin\AppData\Local\Temp\C73E.exe"C:\Users\Admin\AppData\Local\Temp\C73E.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Executes dropped EXE
- Checks computer location settings
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C:\Users\Admin\AppData\Local\8985dbfe-53f1-485c-a3a6-5e0e255f7d76\build2.exe"C:\Users\Admin\AppData\Local\8985dbfe-53f1-485c-a3a6-5e0e255f7d76\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
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C:\Users\Admin\AppData\Local\8985dbfe-53f1-485c-a3a6-5e0e255f7d76\build2.exe"C:\Users\Admin\AppData\Local\8985dbfe-53f1-485c-a3a6-5e0e255f7d76\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 timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\8985dbfe-53f1-485c-a3a6-5e0e255f7d76\build2.exe" & exit7⤵
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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\8985dbfe-53f1-485c-a3a6-5e0e255f7d76\build3.exe"C:\Users\Admin\AppData\Local\8985dbfe-53f1-485c-a3a6-5e0e255f7d76\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\CA7B.exeC:\Users\Admin\AppData\Local\Temp\CA7B.exe1⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4084 -s 3402⤵
- Program crash
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C:\Users\Admin\AppData\Local\Temp\CBC4.exeC:\Users\Admin\AppData\Local\Temp\CBC4.exe1⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
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C:\Users\Admin\AppData\Local\Temp\D1A1.exeC:\Users\Admin\AppData\Local\Temp\D1A1.exe1⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\ChromeSetup.exe"C:\Users\Admin\AppData\Local\Temp\ChromeSetup.exe"2⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1612 -s 3403⤵
- Program crash
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C:\Users\Admin\AppData\Local\Temp\llpb1133.exe"C:\Users\Admin\AppData\Local\Temp\llpb1133.exe"2⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\liuyuzhen.exe"C:\Users\Admin\AppData\Local\Temp\liuyuzhen.exe"2⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\liuyuzhen.exe"C:\Users\Admin\AppData\Local\Temp\liuyuzhen.exe" -h3⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\D730.exeC:\Users\Admin\AppData\Local\Temp\D730.exe1⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\llpb1133.exe"C:\Users\Admin\AppData\Local\Temp\llpb1133.exe"2⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\ChromeSetup.exe"C:\Users\Admin\AppData\Local\Temp\ChromeSetup.exe"2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
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C:\Users\Admin\AppData\Local\Temp\liuyuzhen.exe"C:\Users\Admin\AppData\Local\Temp\liuyuzhen.exe"2⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\liuyuzhen.exe"C:\Users\Admin\AppData\Local\Temp\liuyuzhen.exe" -h3⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4084 -ip 40841⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 204 -ip 2041⤵
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C:\Windows\system32\rundll32.exerundll32.exe "C:\Users\Admin\AppData\Local\Temp\db.dll",open1⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe "C:\Users\Admin\AppData\Local\Temp\db.dll",open2⤵
- Loads dropped DLL
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4220 -s 6003⤵
- Program crash
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C:\Windows\system32\rundll32.exerundll32.exe "C:\Users\Admin\AppData\Local\Temp\db.dll",open1⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe "C:\Users\Admin\AppData\Local\Temp\db.dll",open2⤵
- Loads dropped DLL
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4804 -s 6003⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 4220 -ip 42201⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1612 -ip 16121⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4804 -ip 48041⤵
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C:\Users\Admin\AppData\Roaming\Win32Sync\svcupdater.exeC:\Users\Admin\AppData\Roaming\Win32Sync\svcupdater.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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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
mozglue.dll
nss3.dll
07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
build2.exe
build2.exe
build2.exe
build3.exe
build3.exe
C604.exe
C604.exe
C73E.exe
C73E.exe
C73E.exe
C73E.exe
C73E.exe
CA7B.exe
CA7B.exe
CBC4.exe
CBC4.exe
ChromeSetup.exe
ChromeSetup.exe
ChromeSetup.exe
ChromeSetup.exe
D1A1.exe
D1A1.exe
D730.exe
D730.exe
db.dat
db.dat
db.dll
db.dll
db.dll
db.dll
liuyuzhen.exe
liuyuzhen.exe
liuyuzhen.exe
liuyuzhen.exe
liuyuzhen.exe
liuyuzhen.exe
llpb1133.exe
llpb1133.exe
llpb1133.exe
llpb1133.exe
C73E.exe
mstsca.exe
mstsca.exe
svcupdater.exe
svcupdater.exe
memory/204-190-0x00000000005F0000-0x0000000000637000-memory.dmp
memory/204-191-0x0000000000400000-0x000000000047A000-memory.dmp
memory/204-189-0x00000000006B9000-0x00000000006E3000-memory.dmp
memory/204-207-0x0000000000400000-0x000000000047A000-memory.dmp
memory/204-206-0x00000000006B9000-0x00000000006E3000-memory.dmp
memory/376-133-0x0000000000600000-0x0000000000609000-memory.dmp
memory/376-134-0x0000000000400000-0x0000000000463000-memory.dmp
memory/376-132-0x0000000000629000-0x000000000063E000-memory.dmp
memory/376-135-0x0000000000400000-0x0000000000463000-memory.dmp
memory/1612-223-0x0000000000400000-0x0000000000466000-memory.dmp
memory/1612-221-0x0000000000758000-0x000000000076E000-memory.dmp
memory/1660-175-0x0000000140000000-0x0000000140619000-memory.dmp
memory/1664-216-0x000000000055C000-0x0000000000571000-memory.dmp
memory/1664-219-0x0000000000400000-0x0000000000466000-memory.dmp
memory/1664-226-0x0000000000400000-0x0000000000466000-memory.dmp
memory/1664-217-0x00000000004E0000-0x00000000004E9000-memory.dmp
memory/2096-227-0x00000000004D7000-0x0000000000501000-memory.dmp
memory/2096-228-0x0000000000400000-0x000000000047A000-memory.dmp
memory/2784-254-0x0000000000400000-0x0000000000471000-memory.dmp
memory/2784-255-0x0000000000400000-0x0000000000471000-memory.dmp
memory/2784-259-0x00000000509C0000-0x0000000050A52000-memory.dmp
memory/2784-281-0x0000000000400000-0x0000000000471000-memory.dmp
memory/2784-258-0x0000000000400000-0x0000000000471000-memory.dmp
memory/2784-252-0x0000000000400000-0x0000000000471000-memory.dmp
memory/3396-229-0x0000000004745000-0x00000000047D7000-memory.dmp
memory/3636-257-0x0000000004840000-0x000000000489D000-memory.dmp
memory/3636-256-0x0000000002C8D000-0x0000000002CC1000-memory.dmp
memory/3696-239-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3696-250-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3696-234-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3696-233-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3772-203-0x0000000000400000-0x0000000002B98000-memory.dmp
memory/3772-192-0x0000000002DCD000-0x0000000002DDF000-memory.dmp
memory/3772-198-0x0000000000400000-0x0000000002B98000-memory.dmp
memory/3772-193-0x0000000002BD0000-0x0000000002BD9000-memory.dmp
memory/3872-161-0x00000000048A8000-0x000000000493A000-memory.dmp
memory/3872-163-0x0000000004940000-0x0000000004A5B000-memory.dmp
memory/4084-201-0x0000000000400000-0x0000000000463000-memory.dmp
memory/4084-200-0x0000000000829000-0x000000000083F000-memory.dmp
memory/4648-173-0x0000000140000000-0x0000000140619000-memory.dmp
memory/4692-151-0x0000000000EF0000-0x00000000012E6000-memory.dmp
memory/4808-162-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4808-220-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4808-160-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4808-158-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4808-172-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4808-215-0x0000000000400000-0x0000000000537000-memory.dmp