Analysis
- max time kernel
149s - max time network
134s - platform
windows10-2004_x64 - resource
win10v2004-20260911-en - resource tags
- submitted
14/10/2026, 10:41
General
- Target jaffacakes118_Trojan.Win32.VBKryjetor.baty.exe
- Size 786KB
- Sample261014-mrcsysbx41
- SHA256 3cc0673a2dae097af0596df41724f6770be2e444bd9d98bb83b454075c4c8150
Malware Config
Extracted
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Protocol
smtp
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Host
smtp.yandex.com
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Port
587
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Username
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Password
greenday1104
Signatures
- Family: Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- Family: HawkEye
HawkEye is a malware kit that has seen continuous development since at least 2013.
- Detected Nirsoft tools 9 IoCs
Free utilities often used by attackers which can steal passwords, product keys, etc.
- NirSoft MailPassView 6 IoCs
Password recovery tool for various email clients
- NirSoft WebBrowserPassView 6 IoCs
Password recovery tool for various web browsers
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Deletes itself 1 TTPs 1 IoCs
- Executes dropped EXE 2 IoCs
- Uses the VBS compiler for execution 1 TTPs
- Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
- Looks up external IP address via web service 1 TTPs 1 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).
- Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
- System Location Discovery: System Language Discovery 1 TTPs 6 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 3 IoCs
- Suspicious use of WriteProcessMemory 15 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan.Win32.VBKryjetor.baty.exe"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan.Win32.VBKryjetor.baty.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan.Win32.VBKryjetor.baty.exeC:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan.Win32.VBKryjetor.baty.exe"2⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\Windows Update.exe"C:\Users\Admin\AppData\Roaming\Windows Update.exe"3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\Windows Update.exeC:\Users\Admin\AppData\Roaming\Windows Update.exe"4⤵
- Deletes itself
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exeC:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holdermail.txt"5⤵
- Accesses Microsoft Outlook accounts
- System Location Discovery: System Language Discovery
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exeC:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holderwb.txt"5⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
SysInfo.txt
holderwb.txt
Windows Update.exe
memory/2312-19-0x0000000076970000-0x0000000076A60000-memory.dmp
memory/2312-40-0x0000000076970000-0x0000000076A60000-memory.dmp
memory/2312-24-0x0000000076970000-0x0000000076A60000-memory.dmp
memory/2312-23-0x0000000076970000-0x0000000076A60000-memory.dmp
memory/2312-22-0x0000000076970000-0x0000000076A60000-memory.dmp
memory/2312-21-0x0000000076970000-0x0000000076A60000-memory.dmp
memory/2312-20-0x0000000076970000-0x0000000076A60000-memory.dmp
memory/2312-5-0x0000000000400000-0x0000000000477000-memory.dmp
memory/2312-18-0x0000000076970000-0x0000000076A60000-memory.dmp
memory/2312-17-0x0000000076990000-0x0000000076991000-memory.dmp
memory/2312-39-0x0000000000400000-0x0000000000477000-memory.dmp
memory/2312-8-0x0000000006A70000-0x0000000006B00000-memory.dmp
memory/2992-45-0x0000000076970000-0x0000000076A60000-memory.dmp
memory/2992-48-0x0000000006B50000-0x0000000006BE0000-memory.dmp
memory/2992-63-0x0000000076970000-0x0000000076A60000-memory.dmp
memory/4624-2-0x0000000002290000-0x0000000002296000-memory.dmp
memory/4808-70-0x0000000000460000-0x0000000000529000-memory.dmp
memory/4808-71-0x0000000000400000-0x0000000000458000-memory.dmp
memory/4808-65-0x0000000000400000-0x0000000000458000-memory.dmp
memory/4808-64-0x0000000000400000-0x0000000000458000-memory.dmp
memory/4960-62-0x0000000000400000-0x000000000041B000-memory.dmp
memory/4960-60-0x0000000000400000-0x000000000041B000-memory.dmp
memory/4960-61-0x0000000000400000-0x000000000041B000-memory.dmp
memory/5276-44-0x0000000076970000-0x0000000076A60000-memory.dmp
memory/5276-42-0x0000000076970000-0x0000000076A60000-memory.dmp