Analysis
- max time kernel
151s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20220901-en - resource tags
- submitted
25/10/2022, 09:42
General
- Target 1dbc61be06adbff7b89fc7397a35d688.exe
- Size 230KB
- Sample221025-lpb8zaccaj
- SHA256 1fee585e34e2bf024c93a5e00826496fe001036720f10aa25ab9fa1deb3e5f5e
Malware Config
Extracted
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djvu
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http://winnlinne.com/lancer/get.php
-
extension
.nury
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offline_id
KFBzXY7hTnWvKHIgFKUOR1MsE6RDJJwQPj1ozPt1
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payload_url
http://uaery.top/dl/build2.exe
http://winnlinne.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
-
auth_value
eca57cfb5172f71dc45986763bb98942
Extracted
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vidar
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55.2
-
517
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https://t.me/slivetalks
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https://c.im/@xinibin420
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profile_id
517
Signatures
- Detected Djvu ransomware 10 IoCs
- Detects Smokeloader packer 2 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 2 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 10 IoCs
- Checks computer location settings 2 TTPs 3 IoCs
Looks up country code configured in the registry, likely geofence.
- Loads dropped DLL 5 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.
- Uses the VBS compiler for execution 1 TTPs
- 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.
- 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 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
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 6 IoCs
- Suspicious use of AdjustPrivilegeToken 27 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\1dbc61be06adbff7b89fc7397a35d688.exe"C:\Users\Admin\AppData\Local\Temp\1dbc61be06adbff7b89fc7397a35d688.exe"1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
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C:\Users\Admin\AppData\Local\Temp\D9C.exeC:\Users\Admin\AppData\Local\Temp\D9C.exe1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\D9C.exeC:\Users\Admin\AppData\Local\Temp\D9C.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\628ed023-c053-4f8e-9096-0ad583296d1a" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
-
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C:\Users\Admin\AppData\Local\Temp\D9C.exe"C:\Users\Admin\AppData\Local\Temp\D9C.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\D9C.exe"C:\Users\Admin\AppData\Local\Temp\D9C.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\1c4dbd46-305a-418f-b529-56c7bade59d1\build2.exe"C:\Users\Admin\AppData\Local\1c4dbd46-305a-418f-b529-56c7bade59d1\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\1c4dbd46-305a-418f-b529-56c7bade59d1\build2.exe"C:\Users\Admin\AppData\Local\1c4dbd46-305a-418f-b529-56c7bade59d1\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\1c4dbd46-305a-418f-b529-56c7bade59d1\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\1c4dbd46-305a-418f-b529-56c7bade59d1\build3.exe"C:\Users\Admin\AppData\Local\1c4dbd46-305a-418f-b529-56c7bade59d1\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⤵
- Creates scheduled task(s)
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-
-
-
-
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C:\Users\Admin\AppData\Local\Temp\F82.exeC:\Users\Admin\AppData\Local\Temp\F82.exe1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"2⤵
- Suspicious use of AdjustPrivilegeToken
-
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2076 -s 987282⤵
- Program crash
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C:\Users\Admin\AppData\Local\Temp\11B5.exeC:\Users\Admin\AppData\Local\Temp\11B5.exe1⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
-
C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\14C3.dll1⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\14C3.dll2⤵
- Loads dropped DLL
-
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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 2076 -ip 20761⤵
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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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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
mozglue.dll
nss3.dll
sqlite3.dll
07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
build2.exe
build2.exe
build2.exe
build3.exe
build3.exe
D9C.exe
11B5.exe
11B5.exe
14C3.dll
14C3.dll
14C3.dll
D9C.exe
D9C.exe
D9C.exe
D9C.exe
D9C.exe
F82.exe
F82.exe
mstsca.exe
mstsca.exe
memory/2076-198-0x0000000000400000-0x0000000000560000-memory.dmp
memory/2984-171-0x0000000000400000-0x0000000002C2A000-memory.dmp
memory/2984-161-0x0000000002CD3000-0x0000000002CE8000-memory.dmp
memory/2984-162-0x0000000002C70000-0x0000000002C79000-memory.dmp
memory/2984-163-0x0000000000400000-0x0000000002C2A000-memory.dmp
memory/4168-160-0x0000000000E00000-0x0000000000E6B000-memory.dmp
memory/4168-154-0x0000000000E70000-0x0000000000EE5000-memory.dmp
memory/4168-155-0x0000000000E00000-0x0000000000E6B000-memory.dmp
memory/4256-133-0x00000000001F0000-0x00000000001F9000-memory.dmp
memory/4256-134-0x0000000000400000-0x0000000002C27000-memory.dmp
memory/4256-132-0x0000000002EA2000-0x0000000002EB7000-memory.dmp
memory/4256-135-0x0000000000400000-0x0000000002C27000-memory.dmp
memory/4396-176-0x0000000002F40000-0x000000000308A000-memory.dmp
memory/4396-174-0x0000000003180000-0x0000000003232000-memory.dmp
memory/4396-153-0x0000000002350000-0x000000000258C000-memory.dmp
memory/4396-173-0x0000000003180000-0x0000000003232000-memory.dmp
memory/4396-172-0x00000000030A0000-0x0000000003167000-memory.dmp
memory/4396-158-0x0000000002CA0000-0x0000000002DE9000-memory.dmp
memory/4396-159-0x0000000002F40000-0x000000000308A000-memory.dmp
memory/4840-146-0x000000000074A000-0x00000000007DB000-memory.dmp
memory/4840-147-0x0000000002250000-0x000000000236B000-memory.dmp
memory/5068-157-0x0000000000710000-0x000000000071C000-memory.dmp
memory/9584-167-0x0000000000400000-0x0000000000537000-memory.dmp
memory/9584-180-0x0000000000400000-0x0000000000537000-memory.dmp
memory/9584-169-0x0000000000400000-0x0000000000537000-memory.dmp
memory/9584-165-0x0000000000400000-0x0000000000537000-memory.dmp
memory/9584-168-0x0000000000400000-0x0000000000537000-memory.dmp
memory/63756-185-0x00000000008ED000-0x000000000097E000-memory.dmp
memory/93040-187-0x0000000000400000-0x0000000000537000-memory.dmp
memory/93040-232-0x0000000000400000-0x0000000000537000-memory.dmp
memory/93040-184-0x0000000000400000-0x0000000000537000-memory.dmp
memory/93040-186-0x0000000000400000-0x0000000000537000-memory.dmp
memory/102132-202-0x0000000004E70000-0x0000000004EAC000-memory.dmp
memory/102132-226-0x0000000005D10000-0x0000000005DA2000-memory.dmp
memory/102132-231-0x00000000086E0000-0x0000000008C0C000-memory.dmp
memory/102132-230-0x0000000006140000-0x0000000006302000-memory.dmp
memory/102132-228-0x0000000006510000-0x0000000006AB4000-memory.dmp
memory/102132-224-0x0000000005170000-0x00000000051D6000-memory.dmp
memory/102132-194-0x0000000000412000-0x000000000046B000-memory.dmp
memory/102132-195-0x0000000000410000-0x0000000000470000-memory.dmp
memory/102132-199-0x0000000005450000-0x0000000005A68000-memory.dmp
memory/102132-200-0x0000000004F40000-0x000000000504A000-memory.dmp
memory/102132-201-0x0000000004CF0000-0x0000000004D02000-memory.dmp
memory/102160-213-0x0000000000400000-0x000000000045E000-memory.dmp
memory/102160-215-0x0000000000400000-0x000000000045E000-memory.dmp
memory/102160-227-0x0000000000400000-0x000000000045E000-memory.dmp
memory/102160-217-0x0000000000400000-0x000000000045E000-memory.dmp
memory/102160-211-0x0000000000400000-0x000000000045E000-memory.dmp
memory/102312-216-0x0000000000640000-0x0000000000689000-memory.dmp
memory/102312-214-0x0000000000702000-0x000000000072E000-memory.dmp