Analysis
- max time kernel
150s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20220901-en - resource tags
- submitted
18/10/2022, 10:31
General
- Target file.exe
- Size 200KB
- Sample221018-mkc55sfffj
- SHA256 69853b7d9b7c1f8163a82781e33d2724850e83c728f02c8a42bc1bbb2b94bc03
Malware Config
Extracted
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djvu
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http://winnlinne.com/lancer/get.php
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extension
.tury
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offline_id
Uz66zEbmA32arcxwT81zZhkb23026oHz5iSp8qt1
-
payload_url
http://rgyui.top/dl/build2.exe
http://winnlinne.com/files/1/build3.exe
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ransomnote
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Extracted
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vidar
-
55
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517
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https://t.me/truewallets
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https://mas.to/@zara99
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http://116.203.10.3:80
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profile_id
517
Signatures
- AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
- 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.
- StormKitty
StormKitty is an open source info stealer written in C#.
- StormKitty payload 1 IoCs
- Vidar
Vidar is an infostealer based on Arkei stealer.
- Async RAT payload 1 IoCs
- Downloads MZ/PE file
- Executes dropped EXE 20 IoCs
- VMProtect packed file 6 IoCs
Detects executables packed with VMProtect commercial packer.
- Checks computer location settings 2 TTPs 5 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 profiles 1 TTPs 3 IoCs
- Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- Adds Run key to start application 2 TTPs 3 IoCs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Legitimate hosting services abused for malware hosting/C2 1 TTPs
- 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 5 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 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 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Delays execution with timeout.exe 1 IoCs
- Kills process with taskkill 1 IoCs
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 24 IoCs
- Suspicious use of AdjustPrivilegeToken 35 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\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\1388.exeC:\Users\Admin\AppData\Local\Temp\1388.exe1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\1388.exeC:\Users\Admin\AppData\Local\Temp\1388.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\e1dc681c-ad23-4307-aa2f-7c9f039afb85" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
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C:\Users\Admin\AppData\Local\Temp\1388.exe"C:\Users\Admin\AppData\Local\Temp\1388.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\1388.exe"C:\Users\Admin\AppData\Local\Temp\1388.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\4f5ef9cb-a51d-4db1-ad3c-0abd810997f8\build2.exe"C:\Users\Admin\AppData\Local\4f5ef9cb-a51d-4db1-ad3c-0abd810997f8\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\4f5ef9cb-a51d-4db1-ad3c-0abd810997f8\build2.exe"C:\Users\Admin\AppData\Local\4f5ef9cb-a51d-4db1-ad3c-0abd810997f8\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" øt/c taskkill /im build2.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\4f5ef9cb-a51d-4db1-ad3c-0abd810997f8\build2.exe" & del C:\PrograData\*.dll & exit7⤵
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C:\Windows\SysWOW64\taskkill.exetaskkill /im build2.exe /f8⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
-
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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\4f5ef9cb-a51d-4db1-ad3c-0abd810997f8\build3.exe"C:\Users\Admin\AppData\Local\4f5ef9cb-a51d-4db1-ad3c-0abd810997f8\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⤵
- Creates scheduled task(s)
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-
-
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\15EA.dll1⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\15EA.dll2⤵
- Loads dropped DLL
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C:\Users\Admin\AppData\Local\Temp\1947.exeC:\Users\Admin\AppData\Local\Temp\1947.exe1⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
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C:\Users\Admin\AppData\Local\Temp\1B5B.exeC:\Users\Admin\AppData\Local\Temp\1B5B.exe1⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4608 -s 3402⤵
- Program crash
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C:\Users\Admin\AppData\Local\Temp\2109.exeC:\Users\Admin\AppData\Local\Temp\2109.exe1⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\237B.exeC:\Users\Admin\AppData\Local\Temp\237B.exe1⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4588 -s 3402⤵
- Program crash
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C:\Users\Admin\AppData\Local\Temp\29D5.exeC:\Users\Admin\AppData\Local\Temp\29D5.exe1⤵
- Executes dropped EXE
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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 432 -p 4608 -ip 46081⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 4588 -ip 45881⤵
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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:\Users\Admin\AppData\Local\Temp\BCFE.exeC:\Users\Admin\AppData\Local\Temp\BCFE.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1916 -s 12122⤵
- Program crash
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C:\Users\Admin\AppData\Local\Temp\C154.exeC:\Users\Admin\AppData\Local\Temp\C154.exe1⤵
- Executes dropped EXE
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAANQAwAA==2⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\C154.exeC:\Users\Admin\AppData\Local\Temp\C154.exe2⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\C154.exeC:\Users\Admin\AppData\Local\Temp\C154.exe2⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\C154.exeC:\Users\Admin\AppData\Local\Temp\C154.exe2⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\C4A1.exeC:\Users\Admin\AppData\Local\Temp\C4A1.exe1⤵
- Executes dropped EXE
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAANQAwAA==2⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\C4A1.exeC:\Users\Admin\AppData\Local\Temp\C4A1.exe2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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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:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 1916 -ip 19161⤵
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
C154.exe.log
C4A1.exe.log
powershell.exe.log
StartupProfileData-NonInteractive
1388.exe
1388.exe
1388.exe
1388.exe
1388.exe
15EA.dll
15EA.dll
1947.exe
1947.exe
1B5B.exe
1B5B.exe
2109.exe
2109.exe
237B.exe
237B.exe
29D5.exe
29D5.exe
BCFE.exe
BCFE.exe
C154.exe
C154.exe
C154.exe
C154.exe
C154.exe
C4A1.exe
C4A1.exe
C4A1.exe
1388.exe
mstsca.exe
mstsca.exe
Dnacls.exe
memory/768-161-0x0000000140000000-0x000000014060E000-memory.dmp
memory/1236-297-0x0000000006240000-0x000000000625E000-memory.dmp
memory/1236-292-0x0000000005A50000-0x0000000005AB6000-memory.dmp
memory/1616-284-0x0000000004E60000-0x0000000004E96000-memory.dmp
memory/1616-286-0x00000000054D0000-0x0000000005AF8000-memory.dmp
memory/1840-332-0x0000000000400000-0x0000000000550000-memory.dmp
memory/1912-192-0x0000000003390000-0x0000000003452000-memory.dmp
memory/1912-199-0x0000000003270000-0x0000000003384000-memory.dmp
memory/1912-295-0x0000000000600000-0x0000000000622000-memory.dmp
memory/1912-296-0x00000000003B0000-0x00000000003D7000-memory.dmp
memory/1912-196-0x0000000002A20000-0x0000000002ACD000-memory.dmp
memory/1912-165-0x0000000003030000-0x0000000003144000-memory.dmp
memory/1912-167-0x0000000003270000-0x0000000003384000-memory.dmp
memory/1916-273-0x0000000005260000-0x0000000005878000-memory.dmp
memory/1916-294-0x0000000006560000-0x00000000065D6000-memory.dmp
memory/1916-280-0x0000000005990000-0x00000000059CC000-memory.dmp
memory/1916-290-0x0000000005CA0000-0x0000000005D32000-memory.dmp
memory/1916-275-0x0000000005880000-0x000000000598A000-memory.dmp
memory/1916-274-0x0000000002940000-0x0000000002952000-memory.dmp
memory/1916-269-0x0000000000400000-0x00000000005B9000-memory.dmp
memory/1916-291-0x0000000005D40000-0x0000000005DA6000-memory.dmp
memory/1916-151-0x0000000002270000-0x000000000238B000-memory.dmp
memory/1916-268-0x0000000000600000-0x0000000000659000-memory.dmp
memory/1916-267-0x0000000000833000-0x000000000086A000-memory.dmp
memory/1916-305-0x00000000067E0000-0x00000000069A2000-memory.dmp
memory/1916-266-0x0000000004CB0000-0x0000000005254000-memory.dmp
memory/1916-150-0x000000000076B000-0x00000000007FD000-memory.dmp
memory/1916-298-0x0000000006620000-0x000000000663E000-memory.dmp
memory/2204-300-0x0000000000F80000-0x0000000000F85000-memory.dmp
memory/2204-301-0x0000000000F70000-0x0000000000F79000-memory.dmp
memory/2380-281-0x0000000000F70000-0x0000000000F79000-memory.dmp
memory/2380-287-0x0000000000F80000-0x0000000000F85000-memory.dmp
memory/2484-261-0x0000000000840000-0x0000000000AF2000-memory.dmp
memory/2600-304-0x00000000004C0000-0x00000000004CB000-memory.dmp
memory/2600-303-0x00000000004D0000-0x00000000004D6000-memory.dmp
memory/2948-175-0x00000000008B0000-0x0000000000925000-memory.dmp
memory/2948-183-0x0000000000840000-0x00000000008AB000-memory.dmp
memory/2948-177-0x0000000000840000-0x00000000008AB000-memory.dmp
memory/3068-203-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3068-205-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3068-206-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3068-247-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3512-218-0x00000000007AD000-0x00000000007D9000-memory.dmp
memory/3512-220-0x0000000000730000-0x000000000077F000-memory.dmp
memory/3728-276-0x0000000005700000-0x0000000005722000-memory.dmp
memory/3760-204-0x0000000000626000-0x00000000006B8000-memory.dmp
memory/4200-180-0x0000000000F80000-0x0000000000F8C000-memory.dmp
memory/4588-189-0x00000000006E8000-0x00000000006F9000-memory.dmp
memory/4588-190-0x0000000000400000-0x0000000000437000-memory.dmp
memory/4588-289-0x0000000000380000-0x000000000038C000-memory.dmp
memory/4588-288-0x0000000000390000-0x0000000000396000-memory.dmp
memory/4608-186-0x0000000000638000-0x0000000000649000-memory.dmp
memory/4608-188-0x0000000000400000-0x0000000000437000-memory.dmp
memory/4608-187-0x0000000000590000-0x0000000000599000-memory.dmp
memory/4776-156-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4776-145-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4776-195-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4776-152-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4776-149-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4788-184-0x0000000000440000-0x0000000000449000-memory.dmp
memory/4788-182-0x0000000000478000-0x0000000000488000-memory.dmp
memory/4788-207-0x0000000000400000-0x0000000000437000-memory.dmp
memory/4788-185-0x0000000000400000-0x0000000000437000-memory.dmp
memory/4804-132-0x0000000000509000-0x000000000051A000-memory.dmp
memory/4804-135-0x0000000000400000-0x0000000000437000-memory.dmp
memory/4804-134-0x0000000000400000-0x0000000000437000-memory.dmp
memory/4804-133-0x00000000004B0000-0x00000000004B9000-memory.dmp
memory/4872-271-0x00000000001A0000-0x00000000001AB000-memory.dmp
memory/4872-270-0x00000000001B0000-0x00000000001B7000-memory.dmp
memory/4948-173-0x0000000140000000-0x000000014060E000-memory.dmp
memory/5020-221-0x0000000000400000-0x0000000000463000-memory.dmp
memory/5020-253-0x0000000000400000-0x0000000000463000-memory.dmp
memory/5020-227-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/5020-222-0x0000000000400000-0x0000000000463000-memory.dmp
memory/5020-216-0x0000000000400000-0x0000000000463000-memory.dmp
memory/5080-278-0x00000000001D0000-0x00000000001D9000-memory.dmp
memory/5080-279-0x00000000001C0000-0x00000000001CF000-memory.dmp