Analysis
- max time kernel
150s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20221111-en - resource tags
- submitted
25/01/2023, 23:41
General
- Target file.exe
- Size 324KB
- Sample230125-3pegrscg2s
- SHA256 1aed4467199b979cbd3db16a8fe43bc77a2018d37b991a1082dfd979bf807565
Malware Config
Extracted
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djvu
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http://drampik.com/lancer/get.php
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extension
.mzop
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offline_id
ex4uvTKsM2vEkIcr3MjXi2C6v27h1mS682iUXGt1
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payload_url
http://uaery.top/dl/build2.exe
http://drampik.com/files/1/build3.exe
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ransomnote
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Extracted
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vidar
-
2.2
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19
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https://t.me/litlebey
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https://steamcommunity.com/profiles/76561199472399815
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profile_id
19
Signatures
- Detected Djvu ransomware 10 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 14 IoCs
- VMProtect packed file 6 IoCs
Detects executables packed with VMProtect commercial packer.
- Checks computer location settings 2 TTPs 4 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 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 2 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
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 2 IoCs
- Suspicious use of AdjustPrivilegeToken 16 IoCs
- Suspicious use of UnmapMainImage 1 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\D6EC.exeC:\Users\Admin\AppData\Local\Temp\D6EC.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 4356 -s 7042⤵
- Program crash
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C:\Users\Admin\AppData\Local\Temp\D855.exeC:\Users\Admin\AppData\Local\Temp\D855.exe1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\D855.exeC:\Users\Admin\AppData\Local\Temp\D855.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\9971c742-9113-4d7a-b697-eba57f077231" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
-
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C:\Users\Admin\AppData\Local\Temp\D855.exe"C:\Users\Admin\AppData\Local\Temp\D855.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\D855.exe"C:\Users\Admin\AppData\Local\Temp\D855.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\5efe1dee-d49b-474f-aaa2-2a6ff2edd300\build2.exe"C:\Users\Admin\AppData\Local\5efe1dee-d49b-474f-aaa2-2a6ff2edd300\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\5efe1dee-d49b-474f-aaa2-2a6ff2edd300\build2.exe"C:\Users\Admin\AppData\Local\5efe1dee-d49b-474f-aaa2-2a6ff2edd300\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\5efe1dee-d49b-474f-aaa2-2a6ff2edd300\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\5efe1dee-d49b-474f-aaa2-2a6ff2edd300\build3.exe"C:\Users\Admin\AppData\Local\5efe1dee-d49b-474f-aaa2-2a6ff2edd300\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\DB63.exeC:\Users\Admin\AppData\Local\Temp\DB63.exe1⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
-
C:\Users\Admin\AppData\Local\Temp\DD19.exeC:\Users\Admin\AppData\Local\Temp\DD19.exe1⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4928 -s 3602⤵
- Program crash
-
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C:\Users\Admin\AppData\Local\Temp\E1BE.exeC:\Users\Admin\AppData\Local\Temp\E1BE.exe1⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\E633.exeC:\Users\Admin\AppData\Local\Temp\E633.exe1⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4928 -ip 49281⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 4356 -ip 43561⤵
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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
- 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"2⤵
- Creates scheduled task(s)
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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
D855.exe
D6EC.exe
D6EC.exe
D855.exe
D855.exe
D855.exe
D855.exe
D855.exe
DB63.exe
DB63.exe
DD19.exe
DD19.exe
E1BE.exe
E1BE.exe
E633.exe
E633.exe
mstsca.exe
mstsca.exe
svcupdater.exe
svcupdater.exe
memory/992-186-0x0000000000400000-0x000000000046C000-memory.dmp
memory/992-173-0x000000000073D000-0x0000000000753000-memory.dmp
memory/992-174-0x00000000005B0000-0x00000000005B9000-memory.dmp
memory/992-175-0x0000000000400000-0x000000000046C000-memory.dmp
memory/1476-183-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1476-166-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1476-163-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1476-172-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1476-167-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1480-135-0x0000000000400000-0x000000000046C000-memory.dmp
memory/1480-134-0x0000000000400000-0x000000000046C000-memory.dmp
memory/1480-132-0x00000000005DE000-0x00000000005F4000-memory.dmp
memory/1480-133-0x00000000021A0000-0x00000000021A9000-memory.dmp
memory/2148-208-0x000000000077D000-0x00000000007AE000-memory.dmp
memory/2148-211-0x00000000006F0000-0x0000000000746000-memory.dmp
memory/2484-244-0x0000000000400000-0x000000000046A000-memory.dmp
memory/2484-222-0x0000000060900000-0x0000000060992000-memory.dmp
memory/2484-206-0x0000000000400000-0x000000000046A000-memory.dmp
memory/2484-209-0x0000000000400000-0x000000000046A000-memory.dmp
memory/2484-212-0x0000000000400000-0x000000000046A000-memory.dmp
memory/2484-210-0x0000000000400000-0x000000000046A000-memory.dmp
memory/2524-190-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2524-192-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2524-213-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2524-197-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3776-171-0x0000000002200000-0x000000000231B000-memory.dmp
memory/3776-169-0x0000000002010000-0x00000000020A2000-memory.dmp
memory/4120-151-0x0000000140000000-0x0000000140623000-memory.dmp
memory/4288-191-0x0000000001FC8000-0x000000000205A000-memory.dmp
memory/4356-164-0x000000000071D000-0x0000000000747000-memory.dmp
memory/4356-184-0x000000000071D000-0x0000000000747000-memory.dmp
memory/4356-170-0x0000000000400000-0x000000000046D000-memory.dmp
memory/4356-185-0x0000000000400000-0x000000000046D000-memory.dmp
memory/4356-168-0x0000000001FA0000-0x0000000001FE7000-memory.dmp
memory/4468-158-0x0000000140000000-0x0000000140623000-memory.dmp
memory/4504-217-0x0000000000400000-0x000000000046D000-memory.dmp
memory/4504-216-0x000000000060C000-0x0000000000636000-memory.dmp
memory/4504-221-0x000000000060C000-0x0000000000636000-memory.dmp
memory/4928-177-0x0000000000400000-0x0000000000459000-memory.dmp
memory/4928-176-0x000000000051D000-0x0000000000533000-memory.dmp