Analysis
- max time kernel
150s - max time network
141s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
09/01/2023, 05:16
General
- Target 0d8206f8fbd4cad4c14fbc48e1ecec79.exe
- Size 312KB
- Sample230109-fx5btsda93
- SHA256 4af17f6550a717809d5bd66260cbbe29d4df218561b24bcc5bef9441c8890bb8
Malware Config
Extracted
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djvu
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http://spaceris.com/lancer/get.php
-
extension
.bpto
-
offline_id
pu5TgkFNAS5fWQ2rCzdamsmMrE5wSlTupdTI0pt1
-
payload_url
http://uaery.top/dl/build2.exe
http://spaceris.com/files/1/build3.exe
-
ransomnote
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Extracted
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vidar
-
1.8
-
19
-
https://t.me/year2023start
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https://steamcommunity.com/profiles/76561199467421923
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profile_id
19
Signatures
- DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
- 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.
- Blocklisted process makes network request 1 IoCs
- Downloads MZ/PE file
- Executes dropped EXE 14 IoCs
- Checks computer location settings 2 TTPs 3 IoCs
Looks up country code configured in the registry, likely geofence.
- Loads dropped DLL 3 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 accounts 1 TTPs 1 IoCs
- Accesses Microsoft Outlook profiles 1 TTPs 4 IoCs
- 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 NtSetInformationThreadHideFromDebugger 2 IoCs
- 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 4 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 28 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
- Modifies Internet Explorer settings 1 TTPs 4 IoCs
- Modifies registry class 30 IoCs
- Suspicious behavior: AddClipboardFormatListener 1 IoCs
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 2 IoCs
- Suspicious use of AdjustPrivilegeToken 43 IoCs
- Suspicious use of FindShellTrayWindow 10 IoCs
- Suspicious use of SetWindowsHookEx 2 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\0d8206f8fbd4cad4c14fbc48e1ecec79.exe"C:\Users\Admin\AppData\Local\Temp\0d8206f8fbd4cad4c14fbc48e1ecec79.exe"1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
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C:\Users\Admin\AppData\Local\Temp\4815.exeC:\Users\Admin\AppData\Local\Temp\4815.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1064 -s 12562⤵
- Program crash
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C:\Users\Admin\AppData\Local\Temp\49FA.exeC:\Users\Admin\AppData\Local\Temp\49FA.exe1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\49FA.exeC:\Users\Admin\AppData\Local\Temp\49FA.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\a77b1535-6bc2-4392-8154-2eeb19f94310" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
-
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C:\Users\Admin\AppData\Local\Temp\49FA.exe"C:\Users\Admin\AppData\Local\Temp\49FA.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\49FA.exe"C:\Users\Admin\AppData\Local\Temp\49FA.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\1bd766cf-e36e-41c7-921f-a680508325c7\build2.exe"C:\Users\Admin\AppData\Local\1bd766cf-e36e-41c7-921f-a680508325c7\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\1bd766cf-e36e-41c7-921f-a680508325c7\build2.exe"C:\Users\Admin\AppData\Local\1bd766cf-e36e-41c7-921f-a680508325c7\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\1bd766cf-e36e-41c7-921f-a680508325c7\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\1bd766cf-e36e-41c7-921f-a680508325c7\build3.exe"C:\Users\Admin\AppData\Local\1bd766cf-e36e-41c7-921f-a680508325c7\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\4CF9.exeC:\Users\Admin\AppData\Local\Temp\4CF9.exe1⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4496 -s 3442⤵
- Program crash
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C:\Users\Admin\AppData\Local\Temp\4EDE.exeC:\Users\Admin\AppData\Local\Temp\4EDE.exe1⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
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C:\Users\Admin\AppData\Local\Temp\50E3.exeC:\Users\Admin\AppData\Local\Temp\50E3.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4740 -s 12562⤵
- Program crash
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C:\Users\Admin\AppData\Local\Temp\6297.exeC:\Users\Admin\AppData\Local\Temp\6297.exe1⤵
- Executes dropped EXE
- Suspicious use of NtSetInformationThreadHideFromDebugger
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4496 -ip 44961⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4740 -ip 47401⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 1064 -ip 10641⤵
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C:\Users\Admin\AppData\Local\Temp\37EA.exeC:\Users\Admin\AppData\Local\Temp\37EA.exe1⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\Wtfoiq.tmp",Iyidwoiowsw2⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Accesses Microsoft Outlook accounts
- Accesses Microsoft Outlook profiles
- Suspicious use of SetThreadContext
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- outlook_office_path
- outlook_win_path
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C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Windows\system32\shell32.dll",#61 155983⤵
- Modifies registry class
- Suspicious use of FindShellTrayWindow
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C:\Windows\SysWOW64\schtasks.exeschtasks /End /tn \Microsoft\Windows\Wininet\CacheTask3⤵
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C:\Windows\SysWOW64\schtasks.exeschtasks /Run /tn \Microsoft\Windows\Wininet\CacheTask3⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3972 -s 5242⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 3972 -ip 39721⤵
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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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C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵
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
37EA.exe
37EA.exe
4815.exe
4815.exe
49FA.exe
49FA.exe
49FA.exe
49FA.exe
49FA.exe
4CF9.exe
4CF9.exe
4EDE.exe
4EDE.exe
50E3.exe
50E3.exe
6297.exe
6297.exe
Wtfoiq.tmp
Wtfoiq.tmp
49FA.exe
mstsca.exe
mstsca.exe
memory/400-174-0x0000000002E1D000-0x0000000002E2D000-memory.dmp
memory/400-180-0x0000000000400000-0x0000000002BAA000-memory.dmp
memory/400-176-0x0000000000400000-0x0000000002BAA000-memory.dmp
memory/432-263-0x0000000004390000-0x00000000044D0000-memory.dmp
memory/432-274-0x0000000006190000-0x0000000006CD1000-memory.dmp
memory/432-265-0x0000000004390000-0x00000000044D0000-memory.dmp
memory/432-264-0x0000000004390000-0x00000000044D0000-memory.dmp
memory/432-262-0x0000000004390000-0x00000000044D0000-memory.dmp
memory/432-261-0x0000000004390000-0x00000000044D0000-memory.dmp
memory/432-258-0x0000000006190000-0x0000000006CD1000-memory.dmp
memory/432-259-0x0000000006190000-0x0000000006CD1000-memory.dmp
memory/432-260-0x0000000004390000-0x00000000044D0000-memory.dmp
memory/1064-175-0x00000000072D0000-0x000000000730C000-memory.dmp
memory/1064-154-0x0000000002C5D000-0x0000000002C8B000-memory.dmp
memory/1064-195-0x0000000002C5D000-0x0000000002C8B000-memory.dmp
memory/1064-173-0x00000000072B0000-0x00000000072C2000-memory.dmp
memory/1064-170-0x00000000078F0000-0x0000000007F08000-memory.dmp
memory/1064-159-0x0000000007340000-0x00000000078E4000-memory.dmp
memory/1064-171-0x0000000007F10000-0x000000000801A000-memory.dmp
memory/1064-188-0x0000000008AA0000-0x0000000008B32000-memory.dmp
memory/1064-214-0x0000000000400000-0x0000000002BC7000-memory.dmp
memory/1064-155-0x00000000047D0000-0x000000000481B000-memory.dmp
memory/1064-158-0x0000000000400000-0x0000000002BC7000-memory.dmp
memory/1068-161-0x0000000004A00000-0x0000000004B1B000-memory.dmp
memory/1068-167-0x0000000002DC3000-0x0000000002E54000-memory.dmp
memory/2084-160-0x0000000000400000-0x0000000000FA3000-memory.dmp
memory/2084-168-0x0000000000400000-0x0000000000FA3000-memory.dmp
memory/2084-156-0x0000000000400000-0x0000000000FA3000-memory.dmp
memory/2084-196-0x0000000000400000-0x0000000000FA3000-memory.dmp
memory/2084-201-0x0000000000400000-0x0000000000FA3000-memory.dmp
memory/2316-193-0x0000000004905000-0x0000000004996000-memory.dmp
memory/2400-163-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2400-186-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2400-181-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2400-165-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2400-166-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3560-202-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3560-223-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3560-192-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3560-194-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3972-250-0x0000000002EC7000-0x0000000002F9B000-memory.dmp
memory/3972-253-0x0000000000400000-0x0000000002C6D000-memory.dmp
memory/3972-251-0x00000000049B0000-0x0000000004AC5000-memory.dmp
memory/4040-267-0x000001AC4EFA0000-0x000001AC4F0E0000-memory.dmp
memory/4040-269-0x000001AC4EFA0000-0x000001AC4F0E0000-memory.dmp
memory/4040-268-0x0000000000210000-0x00000000004B1000-memory.dmp
memory/4040-270-0x000001AC4D540000-0x000001AC4D7F2000-memory.dmp
memory/4040-275-0x000001AC4D540000-0x000001AC4D7F2000-memory.dmp
memory/4496-179-0x0000000002C9D000-0x0000000002CAD000-memory.dmp
memory/4496-172-0x0000000000400000-0x0000000002BA9000-memory.dmp
memory/4496-169-0x00000000046A0000-0x00000000046A9000-memory.dmp
memory/4632-216-0x0000000000400000-0x0000000000460000-memory.dmp
memory/4632-221-0x0000000000400000-0x0000000000460000-memory.dmp
memory/4632-256-0x0000000000400000-0x0000000000460000-memory.dmp
memory/4632-218-0x0000000000400000-0x0000000000460000-memory.dmp
memory/4632-227-0x00000000509E0000-0x0000000050A72000-memory.dmp
memory/4632-254-0x0000000000400000-0x0000000000460000-memory.dmp
memory/4632-222-0x0000000000400000-0x0000000000460000-memory.dmp
memory/4740-204-0x0000000008CA0000-0x0000000008E62000-memory.dmp
memory/4740-177-0x0000000000400000-0x0000000002BC8000-memory.dmp
memory/4740-182-0x0000000002D4D000-0x0000000002D7B000-memory.dmp
memory/4740-187-0x00000000082B0000-0x0000000008316000-memory.dmp
memory/4740-213-0x0000000000400000-0x0000000002BC8000-memory.dmp
memory/4740-212-0x0000000002D4D000-0x0000000002D7B000-memory.dmp
memory/4740-207-0x0000000008E80000-0x00000000093AC000-memory.dmp
memory/4996-135-0x0000000000400000-0x0000000002C3F000-memory.dmp
memory/4996-133-0x0000000002CC0000-0x0000000002CC9000-memory.dmp
memory/4996-134-0x0000000000400000-0x0000000002C3F000-memory.dmp
memory/4996-132-0x0000000002D17000-0x0000000002D2C000-memory.dmp
memory/5004-220-0x0000000000750000-0x000000000079C000-memory.dmp
memory/5004-219-0x00000000007D8000-0x0000000000806000-memory.dmp