Analysis
- max time kernel
153s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20221111-en - resource tags
- submitted
12/12/2022, 02:35
General
- Target 8767b153be8b11a467e1906ae2c1e14d916e79bc6cc81e9545d93e863d66f021.exe
- Size 328KB
- Sample221212-c28m9sch2v
- SHA256 8767b153be8b11a467e1906ae2c1e14d916e79bc6cc81e9545d93e863d66f021
Malware Config
Extracted
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djvu
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http://abibiall.com/lancer/get.php
-
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
-
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 11 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\8767b153be8b11a467e1906ae2c1e14d916e79bc6cc81e9545d93e863d66f021.exe"C:\Users\Admin\AppData\Local\Temp\8767b153be8b11a467e1906ae2c1e14d916e79bc6cc81e9545d93e863d66f021.exe"1⤵
- DcRat
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
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C:\Users\Admin\AppData\Local\Temp\1647.exeC:\Users\Admin\AppData\Local\Temp\1647.exe1⤵
- Executes dropped EXE
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\19A3.exeC:\Users\Admin\AppData\Local\Temp\19A3.exe1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\19A3.exeC:\Users\Admin\AppData\Local\Temp\19A3.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\540bf730-b5e7-43bb-9ebb-f32d9452059d" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
-
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C:\Users\Admin\AppData\Local\Temp\19A3.exe"C:\Users\Admin\AppData\Local\Temp\19A3.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\19A3.exe"C:\Users\Admin\AppData\Local\Temp\19A3.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\d8661fed-311e-4561-b854-e2ff342119cd\build2.exe"C:\Users\Admin\AppData\Local\d8661fed-311e-4561-b854-e2ff342119cd\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\d8661fed-311e-4561-b854-e2ff342119cd\build2.exe"C:\Users\Admin\AppData\Local\d8661fed-311e-4561-b854-e2ff342119cd\build2.exe"6⤵
- Executes dropped EXE
- Checks computer location settings
- Loads dropped DLL
- Checks processor information in registry
-
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\d8661fed-311e-4561-b854-e2ff342119cd\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\d8661fed-311e-4561-b854-e2ff342119cd\build3.exe"C:\Users\Admin\AppData\Local\d8661fed-311e-4561-b854-e2ff342119cd\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\1A8F.exeC:\Users\Admin\AppData\Local\Temp\1A8F.exe1⤵
- Executes dropped EXE
- Writes to the Master Boot Record (MBR)
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C:\Users\Admin\AppData\Local\Temp\1C16.exeC:\Users\Admin\AppData\Local\Temp\1C16.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 3584 -s 2522⤵
- 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 452 -p 3584 -ip 35841⤵
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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
19A3.exe
1647.exe
1647.exe
19A3.exe
19A3.exe
19A3.exe
19A3.exe
19A3.exe
1A8F.exe
1A8F.exe
1C16.exe
1C16.exe
build2.exe
build2.exe
build2.exe
build3.exe
build3.exe
mstsca.exe
mstsca.exe
memory/32-154-0x0000000005DE0000-0x0000000005E72000-memory.dmp
memory/32-142-0x0000000000EB0000-0x0000000001074000-memory.dmp
memory/484-212-0x0000000000550000-0x000000000059B000-memory.dmp
memory/484-211-0x00000000007A2000-0x00000000007CE000-memory.dmp
memory/992-166-0x0000000000EF0000-0x0000000000EFC000-memory.dmp
memory/1656-191-0x00000000008B1000-0x0000000000943000-memory.dmp
memory/1948-209-0x0000000000400000-0x000000000045F000-memory.dmp
memory/1948-207-0x0000000000400000-0x000000000045F000-memory.dmp
memory/1948-236-0x0000000000400000-0x000000000045F000-memory.dmp
memory/1948-213-0x0000000000400000-0x000000000045F000-memory.dmp
memory/1948-210-0x0000000000400000-0x000000000045F000-memory.dmp
memory/1948-214-0x0000000060900000-0x0000000060992000-memory.dmp
memory/2032-132-0x000000000060A000-0x000000000061F000-memory.dmp
memory/2032-133-0x00000000009F0000-0x00000000009F9000-memory.dmp
memory/2032-134-0x0000000000400000-0x0000000000459000-memory.dmp
memory/2032-135-0x0000000000400000-0x0000000000459000-memory.dmp
memory/2784-149-0x0000000000730000-0x000000000079B000-memory.dmp
memory/2784-181-0x0000000000400000-0x00000000004B1000-memory.dmp
memory/2784-163-0x0000000000400000-0x00000000004B1000-memory.dmp
memory/2784-157-0x0000000000400000-0x00000000004B1000-memory.dmp
memory/2784-148-0x00000000007C1000-0x0000000000822000-memory.dmp
memory/2784-177-0x0000000000730000-0x000000000079B000-memory.dmp
memory/2784-176-0x00000000007C1000-0x0000000000822000-memory.dmp
memory/3208-189-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3208-190-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3208-198-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3208-196-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3336-173-0x0000000000200000-0x000000000026B000-memory.dmp
memory/3336-164-0x0000000000270000-0x00000000002E5000-memory.dmp
memory/3336-165-0x0000000000200000-0x000000000026B000-memory.dmp
memory/3432-244-0x0000000008CA0000-0x00000000091CC000-memory.dmp
memory/3432-179-0x0000000005500000-0x000000000560A000-memory.dmp
memory/3432-178-0x0000000005A10000-0x0000000006028000-memory.dmp
memory/3432-197-0x0000000005430000-0x000000000546C000-memory.dmp
memory/3432-180-0x00000000052C0000-0x00000000052D2000-memory.dmp
memory/3432-168-0x0000000000400000-0x0000000000460000-memory.dmp
memory/3432-241-0x0000000006AD0000-0x0000000007074000-memory.dmp
memory/3432-243-0x0000000007080000-0x0000000007242000-memory.dmp
memory/3432-242-0x00000000061D0000-0x0000000006236000-memory.dmp
memory/3772-150-0x0000000000A52000-0x0000000000AE4000-memory.dmp
memory/3772-151-0x0000000002290000-0x00000000023AB000-memory.dmp
memory/4700-156-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4700-159-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4700-160-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4700-162-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4700-182-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4700-185-0x0000000000400000-0x0000000000537000-memory.dmp