Analysis
- max time kernel
150s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
25/12/2022, 22:31
General
- Target file.exe
- Size 231KB
- Sample221225-2fc2xacc33
- SHA256 49855ecab907d44292eff582ff76bd66db563737612a7df84528498e6a0675fe
Malware Config
Extracted
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amadey
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3.63
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62.204.41.165/g8sjnd3xe/index.php
Extracted
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djvu
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http://ex3mall.com/lancer/get.php
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extension
.isza
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offline_id
m3KmScxfDyEQzJYP8qjOSfP4FvpsOXlekGuMPzt1
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payload_url
http://uaery.top/dl/build2.exe
http://ex3mall.com/files/1/build3.exe
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ransomnote
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Signatures
- Amadey
Amadey bot is a simple trojan bot primarily used for collecting reconnaissance information.
- Detect Amadey credential stealer module 2 IoCs
- Detected Djvu ransomware 10 IoCs
- Detects Smokeloader packer 2 IoCs
- Djvu Ransomware
Ransomware which is a variant of the STOP family.
- Process spawned unexpected child process 3 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
- SmokeLoader
Modular backdoor trojan in use since 2014.
- Blocklisted process makes network request 1 IoCs
- Downloads MZ/PE file
- Executes dropped EXE 22 IoCs
- Checks computer location settings 2 TTPs 9 IoCs
Looks up country code configured in the registry, likely geofence.
- Loads dropped DLL 6 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 1 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 4 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 4 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.
- Delays execution with timeout.exe 1 IoCs
- Script User-Agent 3 IoCs
Uses user-agent string associated with script host/environment.
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 2 IoCs
- Suspicious use of AdjustPrivilegeToken 64 IoCs
- Suspicious use of WriteProcessMemory 64 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\D6CD.exeC:\Users\Admin\AppData\Local\Temp\D6CD.exe1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\D6CD.exeC:\Users\Admin\AppData\Local\Temp\D6CD.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\0a9b2447-72cb-4458-9d65-f7f5ef670d24" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
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C:\Users\Admin\AppData\Local\Temp\D6CD.exe"C:\Users\Admin\AppData\Local\Temp\D6CD.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
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C:\Users\Admin\AppData\Local\Temp\D6CD.exe"C:\Users\Admin\AppData\Local\Temp\D6CD.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Executes dropped EXE
- Checks computer location settings
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C:\Users\Admin\AppData\Local\2596e440-ac7d-4d96-a3eb-92795dbc618f\build2.exe"C:\Users\Admin\AppData\Local\2596e440-ac7d-4d96-a3eb-92795dbc618f\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
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C:\Users\Admin\AppData\Local\2596e440-ac7d-4d96-a3eb-92795dbc618f\build2.exe"C:\Users\Admin\AppData\Local\2596e440-ac7d-4d96-a3eb-92795dbc618f\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\2596e440-ac7d-4d96-a3eb-92795dbc618f\build2.exe" & exit7⤵
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C:\Windows\SysWOW64\timeout.exetimeout /t 68⤵
- Delays execution with timeout.exe
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C:\Users\Admin\AppData\Local\2596e440-ac7d-4d96-a3eb-92795dbc618f\build3.exe"C:\Users\Admin\AppData\Local\2596e440-ac7d-4d96-a3eb-92795dbc618f\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\D99D.exeC:\Users\Admin\AppData\Local\Temp\D99D.exe1⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
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C:\Users\Admin\AppData\Local\Temp\DAF5.exeC:\Users\Admin\AppData\Local\Temp\DAF5.exe1⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3392 -s 3402⤵
- Program crash
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C:\Users\Admin\AppData\Local\Temp\DE71.exeC:\Users\Admin\AppData\Local\Temp\DE71.exe1⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\cb465ca805\nbveek.exe"C:\Users\Admin\AppData\Local\Temp\cb465ca805\nbveek.exe"2⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /SC MINUTE /MO 1 /TN nbveek.exe /TR "C:\Users\Admin\AppData\Local\Temp\cb465ca805\nbveek.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\006700e5a2ab05\cred64.dll, Main3⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Accesses Microsoft Outlook profiles
- outlook_win_path
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C:\Users\Admin\AppData\Local\Temp\E066.exeC:\Users\Admin\AppData\Local\Temp\E066.exe1⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\cb465ca805\nbveek.exe"C:\Users\Admin\AppData\Local\Temp\cb465ca805\nbveek.exe"2⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\E624.exeC:\Users\Admin\AppData\Local\Temp\E624.exe1⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\E624.exe"C:\Users\Admin\AppData\Local\Temp\E624.exe" -h2⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3392 -ip 33921⤵
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C:\Users\Admin\AppData\Local\Temp\E7CB.exeC:\Users\Admin\AppData\Local\Temp\E7CB.exe1⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\E7CB.exe"C:\Users\Admin\AppData\Local\Temp\E7CB.exe" -h2⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\E8D5.exeC:\Users\Admin\AppData\Local\Temp\E8D5.exe1⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\E8D5.exe"C:\Users\Admin\AppData\Local\Temp\E8D5.exe" -h2⤵
- Executes dropped EXE
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C:\Windows\system32\rundll32.exerundll32.exe "C:\Users\Admin\AppData\Local\Temp\db.dll",open1⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe "C:\Users\Admin\AppData\Local\Temp\db.dll",open2⤵
- Loads dropped DLL
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1736 -s 6083⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 1736 -ip 17361⤵
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C:\Windows\system32\rundll32.exerundll32.exe "C:\Users\Admin\AppData\Local\Temp\db.dll",open1⤵
- Process spawned unexpected child process
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C:\Windows\SysWOW64\rundll32.exerundll32.exe "C:\Users\Admin\AppData\Local\Temp\db.dll",open2⤵
- Loads dropped DLL
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2264 -s 6003⤵
- Program crash
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C:\Windows\system32\rundll32.exerundll32.exe "C:\Users\Admin\AppData\Local\Temp\db.dll",open1⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe "C:\Users\Admin\AppData\Local\Temp\db.dll",open2⤵
- Loads dropped DLL
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3052 -s 6043⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 3052 -ip 30521⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 2264 -ip 22641⤵
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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\cb465ca805\nbveek.exeC:\Users\Admin\AppData\Local\Temp\cb465ca805\nbveek.exe1⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\cb465ca805\nbveek.exeC:\Users\Admin\AppData\Local\Temp\cb465ca805\nbveek.exe1⤵
- Executes dropped EXE
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
D6CD.exe
build2.exe
build2.exe
build2.exe
build3.exe
build3.exe
D6CD.exe
D6CD.exe
D6CD.exe
D6CD.exe
D6CD.exe
D99D.exe
D99D.exe
DAF5.exe
DAF5.exe
DE71.exe
DE71.exe
E066.exe
E066.exe
E624.exe
E624.exe
E624.exe
E7CB.exe
E7CB.exe
E7CB.exe
E8D5.exe
E8D5.exe
E8D5.exe
nbveek.exe
nbveek.exe
nbveek.exe
nbveek.exe
nbveek.exe
nbveek.exe
db.dat
db.dat
db.dat
db.dll
db.dll
db.dll
db.dll
db.dll
db.dll
cred64.dll
cred64.dll
mstsca.exe
mstsca.exe
memory/756-223-0x0000000000400000-0x0000000000467000-memory.dmp
memory/756-226-0x0000000000400000-0x0000000000467000-memory.dmp
memory/756-225-0x0000000000400000-0x0000000000467000-memory.dmp
memory/756-252-0x0000000000400000-0x0000000000467000-memory.dmp
memory/756-229-0x0000000000400000-0x0000000000467000-memory.dmp
memory/756-231-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/1568-228-0x00000000005C0000-0x0000000000613000-memory.dmp
memory/1568-227-0x0000000000638000-0x0000000000666000-memory.dmp
memory/2196-132-0x000000000071D000-0x000000000072D000-memory.dmp
memory/2196-214-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2196-207-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2196-134-0x0000000000400000-0x000000000045E000-memory.dmp
memory/2196-133-0x00000000005E0000-0x00000000005E9000-memory.dmp
memory/2196-206-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2196-135-0x0000000000400000-0x000000000045E000-memory.dmp
memory/2196-230-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2988-160-0x00000000021E0000-0x00000000022FB000-memory.dmp
memory/2988-158-0x0000000000762000-0x00000000007F3000-memory.dmp
memory/3120-173-0x00000000006DD000-0x00000000006ED000-memory.dmp
memory/3120-174-0x00000000004D0000-0x00000000004D9000-memory.dmp
memory/3120-175-0x0000000000400000-0x000000000045E000-memory.dmp
memory/3120-213-0x0000000000400000-0x000000000045E000-memory.dmp
memory/3392-176-0x000000000058D000-0x000000000059E000-memory.dmp
memory/3392-177-0x0000000000400000-0x000000000045E000-memory.dmp
memory/4160-208-0x000000000218F000-0x0000000002220000-memory.dmp
memory/4240-153-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4240-190-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4240-159-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4240-172-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4240-156-0x0000000000400000-0x0000000000537000-memory.dmp