Resubmissions
27/01/2023, 19:45
230127-ygeqcaec7y1027/01/2023, 19:41
230127-yefjvsec7w1027/01/2023, 19:33
230127-x9hr2acg9710Analysis
- max time kernel
150s - max time network
139s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
27/01/2023, 19:33
General
- Target file.exe
- Size 293KB
- Sample230127-x9hr2acg97
- SHA256 aff732e2d1ec65ca8502ceb5d95b8d7810e4aec5895c4b633978034c00a64444
Malware Config
Extracted
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djvu
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http://drampik.com/lancer/get.php
-
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
-
ransomnote
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Extracted
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vidar
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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 18 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\EB4F.exeC:\Users\Admin\AppData\Local\Temp\EB4F.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 2160 -s 10282⤵
- Program crash
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C:\Users\Admin\AppData\Local\Temp\EC5A.exeC:\Users\Admin\AppData\Local\Temp\EC5A.exe1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\EC5A.exeC:\Users\Admin\AppData\Local\Temp\EC5A.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\8c982648-46e9-473d-a52c-de503b16ffab" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
-
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C:\Users\Admin\AppData\Local\Temp\EC5A.exe"C:\Users\Admin\AppData\Local\Temp\EC5A.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\EC5A.exe"C:\Users\Admin\AppData\Local\Temp\EC5A.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\9485c927-ac10-4216-a260-b60c18704093\build2.exe"C:\Users\Admin\AppData\Local\9485c927-ac10-4216-a260-b60c18704093\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\9485c927-ac10-4216-a260-b60c18704093\build2.exe"C:\Users\Admin\AppData\Local\9485c927-ac10-4216-a260-b60c18704093\build2.exe"6⤵
- Executes dropped EXE
- Checks computer location settings
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
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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\9485c927-ac10-4216-a260-b60c18704093\build2.exe" & exit7⤵
-
C:\Windows\SysWOW64\timeout.exetimeout /t 68⤵
- Delays execution with timeout.exe
-
-
-
-
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C:\Users\Admin\AppData\Local\9485c927-ac10-4216-a260-b60c18704093\build3.exe"C:\Users\Admin\AppData\Local\9485c927-ac10-4216-a260-b60c18704093\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\EE8D.exeC:\Users\Admin\AppData\Local\Temp\EE8D.exe1⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
-
C:\Users\Admin\AppData\Local\Temp\F005.exeC:\Users\Admin\AppData\Local\Temp\F005.exe1⤵
- Executes dropped EXE
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4180 -s 3402⤵
- Program crash
-
-
C:\Users\Admin\AppData\Local\Temp\F4AA.exeC:\Users\Admin\AppData\Local\Temp\F4AA.exe1⤵
- Executes dropped EXE
-
C:\Users\Admin\AppData\Local\Temp\FA38.exeC:\Users\Admin\AppData\Local\Temp\FA38.exe1⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4180 -ip 41801⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 2160 -ip 21601⤵
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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
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Downloads
mozglue.dll
nss3.dll
07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
EC5A.exe
build2.exe
build2.exe
build2.exe
build3.exe
build3.exe
EB4F.exe
EB4F.exe
EC5A.exe
EC5A.exe
EC5A.exe
EC5A.exe
EC5A.exe
EE8D.exe
EE8D.exe
F005.exe
F005.exe
F4AA.exe
F4AA.exe
FA38.exe
FA38.exe
mstsca.exe
mstsca.exe
svcupdater.exe
svcupdater.exe
memory/2160-186-0x000000000078D000-0x00000000007B7000-memory.dmp
memory/2160-185-0x0000000000400000-0x000000000046D000-memory.dmp
memory/2160-187-0x00000000006C0000-0x0000000000707000-memory.dmp
memory/2160-173-0x0000000000400000-0x000000000046D000-memory.dmp
memory/2160-165-0x000000000078D000-0x00000000007B7000-memory.dmp
memory/2160-166-0x00000000006C0000-0x0000000000707000-memory.dmp
memory/2472-158-0x0000000140000000-0x0000000140623000-memory.dmp
memory/2844-244-0x000000000053C000-0x0000000000566000-memory.dmp
memory/2844-245-0x0000000000400000-0x000000000046D000-memory.dmp
memory/3396-151-0x0000000140000000-0x0000000140619000-memory.dmp
memory/3588-192-0x000000000204E000-0x00000000020E0000-memory.dmp
memory/3644-237-0x0000000000400000-0x000000000046A000-memory.dmp
memory/3644-213-0x0000000000400000-0x000000000046A000-memory.dmp
memory/3644-212-0x0000000000400000-0x000000000046A000-memory.dmp
memory/3644-210-0x0000000000400000-0x000000000046A000-memory.dmp
memory/3644-214-0x0000000000400000-0x000000000046A000-memory.dmp
memory/3644-215-0x0000000060900000-0x0000000060992000-memory.dmp
memory/3716-167-0x00000000022D0000-0x00000000023EB000-memory.dmp
memory/3716-172-0x0000000002181000-0x0000000002213000-memory.dmp
memory/3748-184-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3748-169-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3748-175-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3748-177-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3748-171-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4180-176-0x0000000000400000-0x000000000046B000-memory.dmp
memory/4180-174-0x0000000000759000-0x000000000076F000-memory.dmp
memory/4304-133-0x0000000000600000-0x0000000000609000-memory.dmp
memory/4304-134-0x0000000000400000-0x0000000000465000-memory.dmp
memory/4304-132-0x0000000000659000-0x000000000066F000-memory.dmp
memory/4304-135-0x0000000000400000-0x0000000000465000-memory.dmp
memory/4464-207-0x0000000002070000-0x00000000020C6000-memory.dmp
memory/4520-191-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4520-194-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4520-193-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4520-208-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4620-163-0x00000000006C0000-0x00000000006C9000-memory.dmp
memory/4620-178-0x0000000000400000-0x0000000000465000-memory.dmp
memory/4620-162-0x0000000000729000-0x000000000073F000-memory.dmp
memory/4620-164-0x0000000000400000-0x0000000000465000-memory.dmp