Analysis
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max time kernel
234s -
max time network
238s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
20-05-2022 22:22
General
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Target
Halkbank,pdf.exe
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Size
893KB
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MD5
a7624902cc07011b5dadbcdd8267c9dc
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SHA1
7d983b597b535d60123a773a1c40fcc14e0500b7
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SHA256
c0cb41070b74fa0e592f10c6d5312e55009f1cc884bd1c242591bc75c5f9e5eb
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SHA512
64487fd6dd327d119fe52a79bd3b2ad602a2a5be418ae97bba71642e03f9e46347ef140c70826a2fbafca570817e798c2d76e93139f98f43c14a6f7208a3ebe9
Malware Config
Signatures
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MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
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MassLogger Main Payload 1 IoCs
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Executes dropped EXE 3 IoCs
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Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses Microsoft Outlook profiles 1 TTPs 42 IoCs
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Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
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Suspicious use of SetThreadContext 2 IoCs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Delays execution with timeout.exe 1 IoCs
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Suspicious behavior: AddClipboardFormatListener 1 IoCs
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Suspicious behavior: EnumeratesProcesses 37 IoCs
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Suspicious use of AdjustPrivilegeToken 4 IoCs
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Suspicious use of SetWindowsHookEx 1 IoCs
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Suspicious use of WriteProcessMemory 34 IoCs
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outlook_office_path 1 IoCs
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outlook_win_path 1 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\Halkbank,pdf.exe"C:\Users\Admin\AppData\Local\Temp\Halkbank,pdf.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\Halkbank,pdf.exe"{path}"2⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn vlc.exe /tr '"C:\Users\Admin\AppData\Roaming\VideoLAN\vlc.exe"' & exit3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn vlc.exe /tr '"C:\Users\Admin\AppData\Roaming\VideoLAN\vlc.exe"'4⤵
- Creates scheduled task(s)
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp87E8.tmp.bat""3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout 34⤵
- Delays execution with timeout.exe
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C:\Users\Admin\AppData\Roaming\VideoLAN\vlc.exe"C:\Users\Admin\AppData\Roaming\VideoLAN\vlc.exe"4⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\VideoLAN\vlc.exe"{path}"5⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Roaming\VideoLAN\vlc.exe"{path}"5⤵
- Executes dropped EXE
- Checks computer location settings
- Accesses Microsoft Outlook profiles
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1KB
MD58ec831f3e3a3f77e4a7b9cd32b48384c
SHA1d83f09fd87c5bd86e045873c231c14836e76a05c
SHA2567667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982
SHA51226bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3
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Filesize
156B
MD585eef1c9c1a76252f85e9632a8814f58
SHA1452a8389f3f804ea6b829427ab3556f7bc0fd56a
SHA256be8f4f92ec1c8cb6444d77135dfad3b84123566d1dc02de48053bfb6befc98f5
SHA5129e43ddecda681526d37db8087c3c558d852de62499314bae8482fea948a156673acdba5e508d3f7abef751f4185231b341f54ba5c6812e7b676649cf3fc1f6cd
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Filesize
893KB
MD5a7624902cc07011b5dadbcdd8267c9dc
SHA17d983b597b535d60123a773a1c40fcc14e0500b7
SHA256c0cb41070b74fa0e592f10c6d5312e55009f1cc884bd1c242591bc75c5f9e5eb
SHA51264487fd6dd327d119fe52a79bd3b2ad602a2a5be418ae97bba71642e03f9e46347ef140c70826a2fbafca570817e798c2d76e93139f98f43c14a6f7208a3ebe9
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Filesize
893KB
MD5a7624902cc07011b5dadbcdd8267c9dc
SHA17d983b597b535d60123a773a1c40fcc14e0500b7
SHA256c0cb41070b74fa0e592f10c6d5312e55009f1cc884bd1c242591bc75c5f9e5eb
SHA51264487fd6dd327d119fe52a79bd3b2ad602a2a5be418ae97bba71642e03f9e46347ef140c70826a2fbafca570817e798c2d76e93139f98f43c14a6f7208a3ebe9
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Filesize
893KB
MD5a7624902cc07011b5dadbcdd8267c9dc
SHA17d983b597b535d60123a773a1c40fcc14e0500b7
SHA256c0cb41070b74fa0e592f10c6d5312e55009f1cc884bd1c242591bc75c5f9e5eb
SHA51264487fd6dd327d119fe52a79bd3b2ad602a2a5be418ae97bba71642e03f9e46347ef140c70826a2fbafca570817e798c2d76e93139f98f43c14a6f7208a3ebe9
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Filesize
893KB
MD5a7624902cc07011b5dadbcdd8267c9dc
SHA17d983b597b535d60123a773a1c40fcc14e0500b7
SHA256c0cb41070b74fa0e592f10c6d5312e55009f1cc884bd1c242591bc75c5f9e5eb
SHA51264487fd6dd327d119fe52a79bd3b2ad602a2a5be418ae97bba71642e03f9e46347ef140c70826a2fbafca570817e798c2d76e93139f98f43c14a6f7208a3ebe9
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Filesize
408KB
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Filesize
536KB
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Filesize
320KB
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Filesize
920KB
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Filesize
624KB
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Filesize
40KB
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Filesize
584KB
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Filesize
5.6MB