Analysis
- max time kernel
150s - max time network
144s - platform
windows10-2004_x64 - resource
win10v2004-20221111-en - resource tags
- submitted
09/01/2023, 16:11
General
- Target 9435cc1769cbcb2c65acd4a41facc20e.exe
- Size 326KB
- Sample230109-tmx2naac6v
- SHA256 aa53cc35aae4abbbac84790b7ff429f2e33ca4385542853c8b218c10c0d2f70a
Malware Config
Extracted
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djvu
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http://spaceris.com/lancer/get.php
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extension
.zouu
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offline_id
7hl6KB3alcoZ6n4DhS2rApCezkIMzShntAiXWMt1
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payload_url
http://uaery.top/dl/build2.exe
http://spaceris.com/files/1/build3.exe
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ransomnote
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Extracted
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aurora
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82.115.223.77:8081
Extracted
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vidar
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1.9
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19
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https://t.me/travelticketshop
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https://steamcommunity.com/profiles/76561199469016299
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profile_id
19
Signatures
- Aurora
Aurora is a crypto wallet stealer written in Golang.
- DcRat 4 IoCs
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
- Detected Djvu ransomware 10 IoCs
- Detects Smokeloader packer 3 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 16 IoCs
- 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 3 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 2 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 21 IoCs
- Suspicious use of AdjustPrivilegeToken 64 IoCs
- Suspicious use of WriteProcessMemory 64 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\9435cc1769cbcb2c65acd4a41facc20e.exe"C:\Users\Admin\AppData\Local\Temp\9435cc1769cbcb2c65acd4a41facc20e.exe"1⤵
- DcRat
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
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C:\Users\Admin\AppData\Local\Temp\C4EB.exeC:\Users\Admin\AppData\Local\Temp\C4EB.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2456 -s 8522⤵
- Program crash
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C:\Users\Admin\AppData\Local\Temp\C7BB.exeC:\Users\Admin\AppData\Local\Temp\C7BB.exe1⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
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C:\Users\Admin\AppData\Local\Temp\C981.exeC:\Users\Admin\AppData\Local\Temp\C981.exe1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\C981.exeC:\Users\Admin\AppData\Local\Temp\C981.exe2⤵
- DcRat
- 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\d0e99dbe-b45e-4620-8cd2-ab646525a702" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
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C:\Users\Admin\AppData\Local\Temp\C981.exe"C:\Users\Admin\AppData\Local\Temp\C981.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\C981.exe"C:\Users\Admin\AppData\Local\Temp\C981.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\560fc8bf-0b06-47f6-b477-a98d4489978e\build2.exe"C:\Users\Admin\AppData\Local\560fc8bf-0b06-47f6-b477-a98d4489978e\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
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C:\Users\Admin\AppData\Local\560fc8bf-0b06-47f6-b477-a98d4489978e\build2.exe"C:\Users\Admin\AppData\Local\560fc8bf-0b06-47f6-b477-a98d4489978e\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\560fc8bf-0b06-47f6-b477-a98d4489978e\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\560fc8bf-0b06-47f6-b477-a98d4489978e\build3.exe"C:\Users\Admin\AppData\Local\560fc8bf-0b06-47f6-b477-a98d4489978e\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⤵
- DcRat
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\E6FD.exeC:\Users\Admin\AppData\Local\Temp\E6FD.exe1⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\bkbnbqbtqbre.exe"C:\Users\Admin\AppData\Roaming\bkbnbqbtqbre.exe"2⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\Wbem\wmic.exewmic os get Caption3⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\cmd.execmd /C "wmic path win32_VideoController get name"3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\Wbem\WMIC.exewmic path win32_VideoController get name4⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\cmd.execmd /C "wmic cpu get name"3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\Wbem\WMIC.exewmic cpu get name4⤵
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C:\Users\Admin\AppData\Local\Temp\E95F.exeC:\Users\Admin\AppData\Local\Temp\E95F.exe1⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3616 -s 14162⤵
- Program crash
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C:\Users\Admin\AppData\Local\Temp\EC0F.exeC:\Users\Admin\AppData\Local\Temp\EC0F.exe1⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3892 -s 3442⤵
- Program crash
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C:\Users\Admin\AppData\Local\Temp\F018.exeC:\Users\Admin\AppData\Local\Temp\F018.exe1⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3892 -ip 38921⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 2456 -ip 24561⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 572 -p 3616 -ip 36161⤵
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C:\Users\Admin\AppData\Local\Temp\795D.exeC:\Users\Admin\AppData\Local\Temp\795D.exe1⤵
- Executes dropped EXE
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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:\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⤵
- DcRat
- 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
795D.exe
795D.exe
C4EB.exe
C4EB.exe
C7BB.exe
C7BB.exe
C981.exe
C981.exe
C981.exe
C981.exe
C981.exe
E6FD.exe
E6FD.exe
E95F.exe
E95F.exe
EC0F.exe
EC0F.exe
F018.exe
F018.exe
C981.exe
mstsca.exe
mstsca.exe
bkbnbqbtqbre.exe
bkbnbqbtqbre.exe
memory/1060-233-0x0000000000400000-0x0000000000461000-memory.dmp
memory/1060-234-0x0000000000400000-0x0000000000461000-memory.dmp
memory/1060-266-0x0000000000400000-0x0000000000461000-memory.dmp
memory/1060-231-0x0000000000400000-0x0000000000461000-memory.dmp
memory/1060-239-0x0000000060900000-0x0000000060992000-memory.dmp
memory/1060-237-0x0000000000400000-0x0000000000461000-memory.dmp
memory/1340-169-0x0000000004EA0000-0x0000000004FBB000-memory.dmp
memory/1340-175-0x0000000004C22000-0x0000000004CB3000-memory.dmp
memory/1624-270-0x0000000000930000-0x000000000093B000-memory.dmp
memory/1624-269-0x0000000000940000-0x0000000000947000-memory.dmp
memory/1724-264-0x00007FF81B7B0000-0x00007FF81C271000-memory.dmp
memory/1724-263-0x00000000006F0000-0x00000000006F8000-memory.dmp
memory/1832-284-0x0000000000940000-0x0000000000945000-memory.dmp
memory/1832-285-0x0000000000930000-0x0000000000939000-memory.dmp
memory/1892-278-0x0000000000BE0000-0x0000000000BE6000-memory.dmp
memory/1892-279-0x0000000000BD0000-0x0000000000BDC000-memory.dmp
memory/1948-132-0x00000000006DE000-0x00000000006F4000-memory.dmp
memory/1948-135-0x0000000000400000-0x0000000000457000-memory.dmp
memory/1948-134-0x0000000000400000-0x0000000000457000-memory.dmp
memory/1948-133-0x00000000006B0000-0x00000000006B9000-memory.dmp
memory/2320-287-0x0000000000940000-0x0000000000946000-memory.dmp
memory/2320-288-0x0000000000930000-0x000000000093B000-memory.dmp
memory/2456-166-0x0000000005700000-0x000000000580A000-memory.dmp
memory/2456-151-0x00000000005B0000-0x00000000005FB000-memory.dmp
memory/2456-204-0x00000000007FE000-0x000000000082C000-memory.dmp
memory/2456-205-0x0000000006540000-0x0000000006702000-memory.dmp
memory/2456-206-0x0000000006720000-0x0000000006C4C000-memory.dmp
memory/2456-207-0x00000000007FE000-0x000000000082C000-memory.dmp
memory/2456-208-0x0000000000400000-0x0000000000470000-memory.dmp
memory/2456-168-0x0000000005840000-0x0000000005852000-memory.dmp
memory/2456-165-0x0000000005060000-0x0000000005678000-memory.dmp
memory/2456-170-0x0000000005860000-0x000000000589C000-memory.dmp
memory/2456-152-0x0000000000400000-0x0000000000470000-memory.dmp
memory/2456-191-0x0000000005B50000-0x0000000005BE2000-memory.dmp
memory/2456-149-0x00000000007FE000-0x000000000082C000-memory.dmp
memory/2456-155-0x0000000004A90000-0x0000000005034000-memory.dmp
memory/2456-192-0x0000000005BF0000-0x0000000005C56000-memory.dmp
memory/2552-273-0x0000000000BB0000-0x0000000000BBF000-memory.dmp
memory/2552-272-0x0000000000BC0000-0x0000000000BC9000-memory.dmp
memory/3164-281-0x0000000001030000-0x0000000001052000-memory.dmp
memory/3164-282-0x0000000001000000-0x0000000001027000-memory.dmp
memory/3264-160-0x0000000000560000-0x0000000000569000-memory.dmp
memory/3264-161-0x0000000000400000-0x0000000000457000-memory.dmp
memory/3264-167-0x00000000007CE000-0x00000000007E4000-memory.dmp
memory/3264-183-0x0000000000400000-0x0000000000457000-memory.dmp
memory/3332-157-0x00007FF81BAF0000-0x00007FF81C5B1000-memory.dmp
memory/3332-182-0x00007FF81BAF0000-0x00007FF81C5B1000-memory.dmp
memory/3332-148-0x0000000000C30000-0x0000000001C1A000-memory.dmp
memory/3616-222-0x0000000000400000-0x0000000000470000-memory.dmp
memory/3616-196-0x0000000000400000-0x0000000000470000-memory.dmp
memory/3616-221-0x000000000060D000-0x000000000063C000-memory.dmp
memory/3616-195-0x000000000060D000-0x000000000063C000-memory.dmp
memory/3616-220-0x000000000060D000-0x000000000063C000-memory.dmp
memory/3892-197-0x000000000078D000-0x00000000007A3000-memory.dmp
memory/3892-198-0x0000000000400000-0x0000000000457000-memory.dmp
memory/4236-177-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4236-174-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4236-172-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4236-181-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4236-202-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4316-186-0x0000000002BA0000-0x0000000002CA0000-memory.dmp
memory/4316-203-0x0000000000400000-0x0000000002B9D000-memory.dmp
memory/4316-188-0x0000000000400000-0x0000000002B9D000-memory.dmp
memory/4316-187-0x0000000004690000-0x0000000004699000-memory.dmp
memory/4516-213-0x0000000004BBC000-0x0000000004C4D000-memory.dmp
memory/4764-276-0x0000000000E60000-0x0000000000E69000-memory.dmp
memory/4764-275-0x0000000000E70000-0x0000000000E75000-memory.dmp
memory/5068-219-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5068-214-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5068-212-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5068-238-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5072-235-0x00000000007FD000-0x000000000082A000-memory.dmp
memory/5072-236-0x00000000006C0000-0x000000000070C000-memory.dmp