Analysis
- max time kernel
150s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
07/10/2022, 18:02
General
- Target file.exe
- Size 267KB
- Sample221007-wmf49adae3
- SHA256 c5c81f05b12ffa0ab70266fac747c90cfa0b0f31bc032b4bdec786074e546554
Malware Config
Extracted
-
djvu
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http://winnlinne.com/lancer/get.php
-
extension
.towz
-
offline_id
SSHsHMHGmSIhrz50VnIxLJJX15osxEQY6iXedXt1
-
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
-
54.9
-
517
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https://t.me/larsenup
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https://ioc.exchange/@zebra54
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profile_id
517
Signatures
- Amadey
Amadey bot is a simple trojan bot primarily used for collecting reconnaissance information.
- Detect Amadey credential stealer module 7 IoCs
- Detected Djvu ransomware 10 IoCs
- Detects Smokeloader packer 2 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.
- Blocklisted process makes network request 2 IoCs
- Downloads MZ/PE file
- Executes dropped EXE 16 IoCs
- Checks computer location settings 2 TTPs 4 IoCs
Looks up country code configured in the registry, likely geofence.
- Loads dropped DLL 7 IoCs
- Modifies file permissions 1 TTPs 1 IoCs
- Reads local data of messenger clients 2 TTPs
Infostealers often target stored data of messaging applications, which can include saved credentials and account information.
- 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 4 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 12 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 3 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Modifies system certificate store 2 TTPs 3 IoCs
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 24 IoCs
- Suspicious use of AdjustPrivilegeToken 64 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\BF2E.exeC:\Users\Admin\AppData\Local\Temp\BF2E.exe1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\BF2E.exeC:\Users\Admin\AppData\Local\Temp\BF2E.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\515ef4ce-242b-48a7-a304-ad5c8b5ac616" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
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C:\Users\Admin\AppData\Local\Temp\BF2E.exe"C:\Users\Admin\AppData\Local\Temp\BF2E.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\BF2E.exe"C:\Users\Admin\AppData\Local\Temp\BF2E.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\5570c1d5-efba-4a95-9b01-d2c3fb5e612d\build2.exe"C:\Users\Admin\AppData\Local\5570c1d5-efba-4a95-9b01-d2c3fb5e612d\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\5570c1d5-efba-4a95-9b01-d2c3fb5e612d\build2.exe"C:\Users\Admin\AppData\Local\5570c1d5-efba-4a95-9b01-d2c3fb5e612d\build2.exe"6⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
-
-
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C:\Users\Admin\AppData\Local\5570c1d5-efba-4a95-9b01-d2c3fb5e612d\build3.exe"C:\Users\Admin\AppData\Local\5570c1d5-efba-4a95-9b01-d2c3fb5e612d\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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C:\Users\Admin\AppData\Local\Temp\C4EC.exeC:\Users\Admin\AppData\Local\Temp\C4EC.exe1⤵
- Executes dropped EXE
- Modifies system certificate store
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 608 -s 5362⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 608 -s 5442⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 608 -s 5642⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 608 -s 6802⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 608 -s 7602⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 608 -s 8602⤵
- Program crash
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C:\Windows\SysWOW64\Wbem\wmic.exewmic os get Caption2⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 608 -s 13562⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 608 -s 13122⤵
- Program crash
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C:\Windows\SysWOW64\cmd.execmd /C "wmic path win32_VideoController get name"2⤵
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C:\Windows\SysWOW64\Wbem\WMIC.exewmic path win32_VideoController get name3⤵
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C:\Windows\SysWOW64\cmd.execmd /C "wmic cpu get name"2⤵
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C:\Windows\SysWOW64\Wbem\WMIC.exewmic cpu get name3⤵
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-
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 608 -s 1402⤵
- Program crash
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C:\Users\Admin\AppData\Local\Temp\C7AC.exeC:\Users\Admin\AppData\Local\Temp\C7AC.exe1⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\CC12.dll1⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\CC12.dll2⤵
- Loads dropped DLL
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C:\Users\Admin\AppData\Local\Temp\CE65.exeC:\Users\Admin\AppData\Local\Temp\CE65.exe1⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2556 -s 3402⤵
- Program crash
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C:\Windows\SysWOW64\explorer.exeC:\Windows\SysWOW64\explorer.exe1⤵
- Accesses Microsoft Outlook profiles
- outlook_office_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 456 -p 2556 -ip 25561⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 364 -p 608 -ip 6081⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 608 -ip 6081⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 608 -ip 6081⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 608 -ip 6081⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 608 -ip 6081⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 608 -ip 6081⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 608 -ip 6081⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 608 -ip 6081⤵
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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:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 608 -ip 6081⤵
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C:\Users\Admin\AppData\Local\Temp\4F9C.exeC:\Users\Admin\AppData\Local\Temp\4F9C.exe1⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\5385.exeC:\Users\Admin\AppData\Local\Temp\5385.exe1⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\6CCB.exeC:\Users\Admin\AppData\Local\Temp\6CCB.exe1⤵
- Executes dropped EXE
- Checks computer location settings
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C:\Users\Admin\AppData\Local\Temp\0fd408e638\wfyoot.exe"C:\Users\Admin\AppData\Local\Temp\0fd408e638\wfyoot.exe"2⤵
- Executes dropped EXE
- Checks computer location settings
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /SC MINUTE /MO 1 /TN wfyoot.exe /TR "C:\Users\Admin\AppData\Local\Temp\0fd408e638\wfyoot.exe" /F3⤵
- Creates scheduled task(s)
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C:\Windows\SysWOW64\rundll32.exe"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\70b90d83e65db7\cred64.dll, Main3⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Accesses Microsoft Outlook profiles
- outlook_win_path
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C:\Windows\SysWOW64\rundll32.exe"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\70b90d83e65db7\cred64.dll, Main3⤵
- Loads dropped DLL
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4312 -s 12762⤵
- 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\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 4312 -ip 43121⤵
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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:\Users\Admin\AppData\Local\Temp\0fd408e638\wfyoot.exeC:\Users\Admin\AppData\Local\Temp\0fd408e638\wfyoot.exe1⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2040 -s 3122⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 2040 -ip 20401⤵
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
BF2E.exe
build2.exe
build2.exe
build2.exe
build3.exe
build3.exe
wfyoot.exe
wfyoot.exe
wfyoot.exe
4F9C.exe
4F9C.exe
5385.exe
5385.exe
6CCB.exe
6CCB.exe
BF2E.exe
BF2E.exe
BF2E.exe
BF2E.exe
BF2E.exe
C4EC.exe
C4EC.exe
C7AC.exe
C7AC.exe
CC12.dll
CC12.dll
CE65.exe
CE65.exe
cred64.dll
cred64.dll
cred64.dll
cred64.dll
cred64.dll
mstsca.exe
mstsca.exe
memory/212-253-0x0000000000DF0000-0x0000000000DF7000-memory.dmp
memory/212-288-0x0000000000DF0000-0x0000000000DF7000-memory.dmp
memory/212-254-0x0000000000DE0000-0x0000000000DEB000-memory.dmp
memory/364-145-0x000000000217A000-0x000000000220B000-memory.dmp
memory/364-147-0x00000000022F0000-0x000000000240B000-memory.dmp
memory/608-241-0x0000000000400000-0x00000000008C5000-memory.dmp
memory/608-232-0x0000000000400000-0x00000000008C5000-memory.dmp
memory/608-231-0x0000000003140000-0x0000000003587000-memory.dmp
memory/764-188-0x000000000207B000-0x000000000210C000-memory.dmp
memory/1176-169-0x0000000000400000-0x0000000000447000-memory.dmp
memory/1176-167-0x000000000062D000-0x000000000063D000-memory.dmp
memory/1176-168-0x00000000005A0000-0x00000000005A9000-memory.dmp
memory/1176-183-0x0000000000400000-0x0000000000447000-memory.dmp
memory/1676-274-0x0000000001260000-0x0000000001282000-memory.dmp
memory/1676-275-0x0000000001230000-0x0000000001257000-memory.dmp
memory/1676-292-0x0000000001260000-0x0000000001282000-memory.dmp
memory/1908-294-0x00000000010B0000-0x00000000010B7000-memory.dmp
memory/1908-284-0x00000000010A0000-0x00000000010AD000-memory.dmp
memory/1908-283-0x00000000010B0000-0x00000000010B7000-memory.dmp
memory/2040-298-0x0000000000400000-0x0000000000453000-memory.dmp
memory/2040-297-0x0000000000500000-0x000000000051C000-memory.dmp
memory/2100-304-0x0000000000830000-0x0000000000854000-memory.dmp
memory/2104-230-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2104-190-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2104-189-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2104-187-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2256-135-0x0000000000400000-0x0000000000448000-memory.dmp
memory/2256-132-0x00000000007BE000-0x00000000007CF000-memory.dmp
memory/2256-134-0x0000000000400000-0x0000000000448000-memory.dmp
memory/2256-133-0x0000000000590000-0x0000000000599000-memory.dmp
memory/2276-268-0x0000000000BD0000-0x0000000000BD6000-memory.dmp
memory/2276-269-0x0000000000BC0000-0x0000000000BCC000-memory.dmp
memory/2276-291-0x0000000000BD0000-0x0000000000BD6000-memory.dmp
memory/2556-172-0x00000000006DD000-0x00000000006ED000-memory.dmp
memory/2556-173-0x0000000000400000-0x0000000000447000-memory.dmp
memory/2860-210-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/2860-209-0x0000000000400000-0x000000000045E000-memory.dmp
memory/2860-203-0x0000000000400000-0x000000000045E000-memory.dmp
memory/2860-242-0x0000000000400000-0x000000000045E000-memory.dmp
memory/2860-199-0x0000000000400000-0x000000000045E000-memory.dmp
memory/3152-170-0x0000000001000000-0x000000000106B000-memory.dmp
memory/3152-162-0x0000000001000000-0x000000000106B000-memory.dmp
memory/3152-161-0x0000000001070000-0x00000000010E5000-memory.dmp
memory/3252-256-0x0000000000950000-0x0000000000959000-memory.dmp
memory/3252-257-0x0000000000940000-0x000000000094F000-memory.dmp
memory/3252-289-0x0000000000950000-0x0000000000959000-memory.dmp
memory/3672-272-0x00000000007BC000-0x00000000007D8000-memory.dmp
memory/3672-273-0x0000000000400000-0x0000000000453000-memory.dmp
memory/3952-287-0x0000000000120000-0x000000000012B000-memory.dmp
memory/3952-286-0x0000000000130000-0x0000000000138000-memory.dmp
memory/3952-295-0x0000000000130000-0x0000000000138000-memory.dmp
memory/4256-148-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4256-150-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4256-152-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4256-159-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4256-182-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4312-263-0x0000000002050000-0x0000000002087000-memory.dmp
memory/4312-264-0x0000000000400000-0x0000000000453000-memory.dmp
memory/4312-262-0x00000000006BD000-0x00000000006DA000-memory.dmp
memory/4560-202-0x000000000065D000-0x0000000000688000-memory.dmp
memory/4560-204-0x00000000021C0000-0x000000000220A000-memory.dmp
memory/4572-277-0x0000000000720000-0x0000000000725000-memory.dmp
memory/4572-278-0x0000000000710000-0x0000000000719000-memory.dmp
memory/4628-166-0x0000000002FE0000-0x0000000003120000-memory.dmp
memory/4628-178-0x0000000002FE0000-0x0000000003120000-memory.dmp
memory/4628-175-0x00000000031F0000-0x000000000329D000-memory.dmp
memory/4628-174-0x0000000003120000-0x00000000031E1000-memory.dmp
memory/4628-164-0x0000000002D10000-0x0000000002E95000-memory.dmp
memory/4760-307-0x0000000000710000-0x0000000000734000-memory.dmp
memory/4872-280-0x0000000000340000-0x0000000000346000-memory.dmp
memory/4872-293-0x0000000000340000-0x0000000000346000-memory.dmp
memory/4872-281-0x0000000000330000-0x000000000033B000-memory.dmp
memory/5024-165-0x0000000000710000-0x000000000071C000-memory.dmp
memory/5064-265-0x0000000000FC0000-0x0000000000FC5000-memory.dmp
memory/5064-266-0x0000000000FB0000-0x0000000000FB9000-memory.dmp
memory/5064-290-0x0000000000FC0000-0x0000000000FC5000-memory.dmp