Analysis
- max time kernel
158s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20221111-en - resource tags
- submitted
12/12/2022, 01:53
General
- Target 813f6f0046b96aca831a7f2f45bc90e38421921071d58d8374d61dffdc3d1ca6.exe
- Size 384KB
- Sample221212-ca144scg6w
- SHA256 813f6f0046b96aca831a7f2f45bc90e38421921071d58d8374d61dffdc3d1ca6
Malware Config
Extracted
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djvu
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http://abibiall.com/lancer/get.php
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extension
.mbtf
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offline_id
d1BN9KEra4Hetg5GUH0nQZqy14sntD2NbihzGQt1
-
payload_url
http://uaery.top/dl/build2.exe
http://abibiall.com/files/1/build3.exe
-
ransomnote
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Extracted
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redline
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mario23_10
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167.235.252.160:10642
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auth_value
eca57cfb5172f71dc45986763bb98942
Extracted
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vidar
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56.1
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517
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https://t.me/dishasta
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https://steamcommunity.com/profiles/76561199441933804
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profile_id
517
Signatures
- 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 1 IoCs
- Djvu Ransomware
Ransomware which is a variant of the STOP family.
- RedLine
RedLine Stealer is a malware family written in C#, first appearing in early 2020.
- RedLine payload 1 IoCs
- SmokeLoader
Modular backdoor trojan in use since 2014.
- Vidar
Vidar is an infostealer based on Arkei stealer.
- Downloads MZ/PE file
- Executes dropped EXE 11 IoCs
- Checks computer location settings 2 TTPs 3 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 Microsoft Outlook profiles 1 TTPs 3 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.
- Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
- Suspicious use of NtSetInformationThreadHideFromDebugger 7 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 1 IoCs
- Checks SCSI registry key(s) 3 TTPs 3 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 5 IoCs
- Suspicious use of AdjustPrivilegeToken 24 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\813f6f0046b96aca831a7f2f45bc90e38421921071d58d8374d61dffdc3d1ca6.exe"C:\Users\Admin\AppData\Local\Temp\813f6f0046b96aca831a7f2f45bc90e38421921071d58d8374d61dffdc3d1ca6.exe"1⤵
- DcRat
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
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C:\Users\Admin\AppData\Local\Temp\6F44.exeC:\Users\Admin\AppData\Local\Temp\6F44.exe1⤵
- Executes dropped EXE
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\73D9.exeC:\Users\Admin\AppData\Local\Temp\73D9.exe1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\73D9.exeC:\Users\Admin\AppData\Local\Temp\73D9.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\90a54d5a-7179-4d13-a1e9-2728d755ff50" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
-
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C:\Users\Admin\AppData\Local\Temp\73D9.exe"C:\Users\Admin\AppData\Local\Temp\73D9.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\73D9.exe"C:\Users\Admin\AppData\Local\Temp\73D9.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\92407dc2-2bfd-4c2f-9817-d5cf695acc77\build2.exe"C:\Users\Admin\AppData\Local\92407dc2-2bfd-4c2f-9817-d5cf695acc77\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\92407dc2-2bfd-4c2f-9817-d5cf695acc77\build2.exe"C:\Users\Admin\AppData\Local\92407dc2-2bfd-4c2f-9817-d5cf695acc77\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\92407dc2-2bfd-4c2f-9817-d5cf695acc77\build2.exe" & exit7⤵
-
C:\Windows\SysWOW64\timeout.exetimeout /t 68⤵
- Delays execution with timeout.exe
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-
-
-
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C:\Users\Admin\AppData\Local\92407dc2-2bfd-4c2f-9817-d5cf695acc77\build3.exe"C:\Users\Admin\AppData\Local\92407dc2-2bfd-4c2f-9817-d5cf695acc77\build3.exe"5⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
-
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\761C.exeC:\Users\Admin\AppData\Local\Temp\761C.exe1⤵
- Executes dropped EXE
- Writes to the Master Boot Record (MBR)
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C:\Users\Admin\AppData\Local\Temp\7811.exeC:\Users\Admin\AppData\Local\Temp\7811.exe1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"2⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4440 -s 2122⤵
- Program crash
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C:\Windows\SysWOW64\explorer.exeC:\Windows\SysWOW64\explorer.exe1⤵
- Accesses Microsoft Outlook profiles
- outlook_office_path
- outlook_win_path
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C:\Windows\explorer.exeC:\Windows\explorer.exe1⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 4440 -ip 44401⤵
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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
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Downloads
mozglue.dll
nss3.dll
07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
73D9.exe
build2.exe
build2.exe
build2.exe
build3.exe
build3.exe
6F44.exe
6F44.exe
73D9.exe
73D9.exe
73D9.exe
73D9.exe
73D9.exe
761C.exe
761C.exe
7811.exe
7811.exe
mstsca.exe
mstsca.exe
memory/444-140-0x0000000005630000-0x00000000056C2000-memory.dmp
memory/444-139-0x0000000000730000-0x00000000008F4000-memory.dmp
memory/1232-210-0x0000000000580000-0x00000000005CB000-memory.dmp
memory/1372-165-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1372-167-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1372-168-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1372-170-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1372-182-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1768-154-0x0000000000D00000-0x0000000000D0C000-memory.dmp
memory/2392-171-0x0000000000400000-0x00000000004B1000-memory.dmp
memory/2392-201-0x00000000007B1000-0x0000000000812000-memory.dmp
memory/2392-200-0x0000000000400000-0x00000000004B1000-memory.dmp
memory/2392-172-0x00000000007B1000-0x0000000000812000-memory.dmp
memory/2392-173-0x0000000002130000-0x000000000219B000-memory.dmp
memory/2612-196-0x00000000064E0000-0x0000000006A84000-memory.dmp
memory/2612-176-0x0000000004E40000-0x0000000004E52000-memory.dmp
memory/2612-174-0x0000000005420000-0x0000000005A38000-memory.dmp
memory/2612-206-0x00000000061A0000-0x0000000006362000-memory.dmp
memory/2612-177-0x0000000004EA0000-0x0000000004EDC000-memory.dmp
memory/2612-175-0x0000000004F10000-0x000000000501A000-memory.dmp
memory/2612-156-0x0000000000800000-0x0000000000860000-memory.dmp
memory/2612-194-0x00000000051B0000-0x0000000005216000-memory.dmp
memory/2612-213-0x00000000086B0000-0x0000000008BDC000-memory.dmp
memory/2980-151-0x0000000000870000-0x00000000008E5000-memory.dmp
memory/2980-169-0x0000000000800000-0x000000000086B000-memory.dmp
memory/2980-152-0x0000000000800000-0x000000000086B000-memory.dmp
memory/3140-134-0x0000000000400000-0x0000000000466000-memory.dmp
memory/3140-133-0x0000000000600000-0x0000000000609000-memory.dmp
memory/3140-132-0x00000000006D1000-0x00000000006E7000-memory.dmp
memory/3140-135-0x0000000000400000-0x0000000000466000-memory.dmp
memory/4184-193-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4184-188-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4184-186-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4184-236-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4332-211-0x0000000000400000-0x000000000045F000-memory.dmp
memory/4332-208-0x0000000000400000-0x000000000045F000-memory.dmp
memory/4332-212-0x0000000000400000-0x000000000045F000-memory.dmp
memory/4332-238-0x0000000000400000-0x000000000045F000-memory.dmp
memory/4332-214-0x0000000000400000-0x000000000045F000-memory.dmp
memory/4332-215-0x0000000060900000-0x0000000060992000-memory.dmp
memory/4356-187-0x00000000005CF000-0x0000000000661000-memory.dmp
memory/4440-161-0x00000000008FE000-0x0000000000900000-memory.dmp
memory/4932-159-0x00000000021E0000-0x00000000022FB000-memory.dmp
memory/4932-157-0x000000000066C000-0x00000000006FE000-memory.dmp