Analysis
- max time kernel
150s - max time network
147s - platform
windows10-2004_x64 - resource
win10v2004-20220901-en - resource tags
- submitted
17/10/2022, 17:36
General
- Target file.exe
- Size 217KB
- Sample221017-v6kfcacffm
- SHA256 047591ca2ccc07bd76829f889993e0be9a945791de2d97211bd57a5b63ae1fde
Malware Config
Extracted
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djvu
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http://winnlinne.com/lancer/get.php
-
extension
.tury
-
offline_id
Uz66zEbmA32arcxwT81zZhkb23026oHz5iSp8qt1
-
payload_url
http://rgyui.top/dl/build2.exe
http://winnlinne.com/files/1/build3.exe
-
ransomnote
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Extracted
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vidar
-
55
-
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
- Detected Djvu ransomware 10 IoCs
- Detects Smokeloader packer 5 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.
- Downloads MZ/PE file
- Executes dropped EXE 18 IoCs
- VMProtect packed file 6 IoCs
Detects executables packed with VMProtect commercial packer.
- Checks computer location settings 2 TTPs 2 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.
- 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 3 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.
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 24 IoCs
- Suspicious use of AdjustPrivilegeToken 51 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\C35.exeC:\Users\Admin\AppData\Local\Temp\C35.exe1⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
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C:\Users\Admin\AppData\Local\Temp\101E.exeC:\Users\Admin\AppData\Local\Temp\101E.exe1⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\1167.exeC:\Users\Admin\AppData\Local\Temp\1167.exe1⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4232 -s 3402⤵
- Program crash
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C:\Users\Admin\AppData\Local\Temp\132D.exeC:\Users\Admin\AppData\Local\Temp\132D.exe1⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4812 -s 3402⤵
- Program crash
-
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C:\Users\Admin\AppData\Local\Temp\1820.exeC:\Users\Admin\AppData\Local\Temp\1820.exe1⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\1A34.exeC:\Users\Admin\AppData\Local\Temp\1A34.exe1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\1A34.exeC:\Users\Admin\AppData\Local\Temp\1A34.exe2⤵
- Executes dropped EXE
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\8305bb81-53a0-46d8-8426-ae71b0ba3bf7" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
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C:\Users\Admin\AppData\Local\Temp\1A34.exe"C:\Users\Admin\AppData\Local\Temp\1A34.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\1A34.exe"C:\Users\Admin\AppData\Local\Temp\1A34.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\d3bc4881-28f7-4adc-95d0-051af2c8e75c\build2.exe"C:\Users\Admin\AppData\Local\d3bc4881-28f7-4adc-95d0-051af2c8e75c\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\d3bc4881-28f7-4adc-95d0-051af2c8e75c\build2.exe"C:\Users\Admin\AppData\Local\d3bc4881-28f7-4adc-95d0-051af2c8e75c\build2.exe"6⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
-
-
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C:\Users\Admin\AppData\Local\d3bc4881-28f7-4adc-95d0-051af2c8e75c\build3.exe"C:\Users\Admin\AppData\Local\d3bc4881-28f7-4adc-95d0-051af2c8e75c\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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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 4232 -ip 42321⤵
-
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\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 4812 -ip 48121⤵
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C:\Windows\explorer.exeC:\Windows\explorer.exe1⤵
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C:\Users\Admin\AppData\Local\Temp\7891.exeC:\Users\Admin\AppData\Local\Temp\7891.exe1⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\7B51.exeC:\Users\Admin\AppData\Local\Temp\7B51.exe1⤵
- Executes dropped EXE
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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)
-
-
C:\Users\Admin\AppData\Local\Temp\8C4A.exeC:\Users\Admin\AppData\Local\Temp\8C4A.exe1⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\95FF.exeC:\Users\Admin\AppData\Local\Temp\95FF.exe1⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\A840.exeC:\Users\Admin\AppData\Local\Temp\A840.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1396 -s 19562⤵
- Program crash
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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 448 -p 1396 -ip 13961⤵
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
mozglue.dll
nss3.dll
07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
1A34.exe
101E.exe
101E.exe
1167.exe
1167.exe
132D.exe
132D.exe
1820.exe
1820.exe
1A34.exe
1A34.exe
1A34.exe
1A34.exe
1A34.exe
7891.exe
7891.exe
7B51.exe
7B51.exe
8C4A.exe
8C4A.exe
95FF.exe
95FF.exe
A840.exe
A840.exe
C35.exe
C35.exe
build2.exe
build2.exe
build2.exe
build3.exe
build3.exe
mstsca.exe
mstsca.exe
memory/408-145-0x0000000140000000-0x000000014060E000-memory.dmp
memory/1396-281-0x0000000005E80000-0x0000000005EE6000-memory.dmp
memory/1396-291-0x0000000006660000-0x00000000066D6000-memory.dmp
memory/1396-300-0x0000000000803000-0x000000000083A000-memory.dmp
memory/1396-297-0x00000000078F0000-0x0000000007E1C000-memory.dmp
memory/1396-296-0x0000000007720000-0x00000000078E2000-memory.dmp
memory/1396-262-0x0000000000803000-0x000000000083A000-memory.dmp
memory/1396-263-0x00000000021D0000-0x0000000002229000-memory.dmp
memory/1396-264-0x0000000000400000-0x00000000005B9000-memory.dmp
memory/1396-265-0x0000000004C90000-0x0000000005234000-memory.dmp
memory/1396-267-0x00000000052E0000-0x00000000058F8000-memory.dmp
memory/1396-295-0x0000000007530000-0x0000000007580000-memory.dmp
memory/1396-268-0x00000000059A0000-0x00000000059B2000-memory.dmp
memory/1396-294-0x0000000006720000-0x000000000673E000-memory.dmp
memory/1396-279-0x0000000005DE0000-0x0000000005E72000-memory.dmp
memory/1396-273-0x0000000005AD0000-0x0000000005B0C000-memory.dmp
memory/1396-271-0x00000000059C0000-0x0000000005ACA000-memory.dmp
memory/1872-258-0x00000000006F0000-0x00000000006FB000-memory.dmp
memory/1872-257-0x0000000000700000-0x0000000000707000-memory.dmp
memory/1872-298-0x0000000000700000-0x0000000000707000-memory.dmp
memory/1884-196-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1884-236-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1884-195-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1884-193-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2256-278-0x0000000000FA0000-0x0000000000FC7000-memory.dmp
memory/2256-277-0x0000000000FD0000-0x0000000000FF2000-memory.dmp
memory/2312-299-0x0000000000A30000-0x0000000000A39000-memory.dmp
memory/2312-261-0x0000000000A20000-0x0000000000A2F000-memory.dmp
memory/2312-260-0x0000000000A30000-0x0000000000A39000-memory.dmp
memory/2316-194-0x0000000000913000-0x00000000009A5000-memory.dmp
memory/2984-209-0x000000000070D000-0x0000000000739000-memory.dmp
memory/2984-210-0x0000000000620000-0x000000000066F000-memory.dmp
memory/3132-288-0x0000000000CE0000-0x0000000000CE7000-memory.dmp
memory/3132-289-0x0000000000CD0000-0x0000000000CDD000-memory.dmp
memory/3336-152-0x0000000000973000-0x0000000000984000-memory.dmp
memory/3336-153-0x00000000001F0000-0x00000000001F9000-memory.dmp
memory/3336-175-0x0000000000400000-0x0000000000594000-memory.dmp
memory/3336-154-0x0000000000400000-0x0000000000594000-memory.dmp
memory/3500-159-0x0000000140000000-0x0000000140613000-memory.dmp
memory/3752-275-0x0000000000820000-0x000000000082C000-memory.dmp
memory/3752-274-0x0000000000830000-0x0000000000836000-memory.dmp
memory/3864-216-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/3864-208-0x0000000000400000-0x0000000000463000-memory.dmp
memory/3864-240-0x0000000000400000-0x0000000000463000-memory.dmp
memory/3864-205-0x0000000000400000-0x0000000000463000-memory.dmp
memory/3864-211-0x0000000000400000-0x0000000000463000-memory.dmp
memory/4040-182-0x00000000021A0000-0x00000000022BB000-memory.dmp
memory/4040-180-0x000000000085A000-0x00000000008EC000-memory.dmp
memory/4044-269-0x0000000001210000-0x0000000001215000-memory.dmp
memory/4044-270-0x0000000001200000-0x0000000001209000-memory.dmp
memory/4232-168-0x0000000000400000-0x0000000000593000-memory.dmp
memory/4232-167-0x00000000001F0000-0x00000000001F9000-memory.dmp
memory/4232-166-0x0000000000933000-0x0000000000944000-memory.dmp
memory/4252-282-0x0000000000800000-0x0000000000805000-memory.dmp
memory/4252-283-0x00000000005F0000-0x00000000005F9000-memory.dmp
memory/4404-189-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4404-184-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4404-177-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4404-179-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4404-181-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4452-286-0x00000000010E0000-0x00000000010EB000-memory.dmp
memory/4452-285-0x00000000010F0000-0x00000000010F6000-memory.dmp
memory/4612-172-0x00000000010E0000-0x000000000114B000-memory.dmp
memory/4612-183-0x00000000010E0000-0x000000000114B000-memory.dmp
memory/4612-171-0x0000000001150000-0x00000000011C5000-memory.dmp
memory/4612-292-0x0000000000560000-0x0000000000568000-memory.dmp
memory/4612-293-0x0000000000550000-0x000000000055B000-memory.dmp
memory/4792-133-0x00000000001F0000-0x00000000001F9000-memory.dmp
memory/4792-132-0x00000000008A3000-0x00000000008B4000-memory.dmp
memory/4792-134-0x0000000000400000-0x0000000000593000-memory.dmp
memory/4792-135-0x0000000000400000-0x0000000000593000-memory.dmp
memory/4812-173-0x00000000006D3000-0x00000000006E4000-memory.dmp
memory/4812-174-0x0000000000400000-0x0000000000594000-memory.dmp
memory/5100-170-0x0000000000540000-0x000000000054C000-memory.dmp