Analysis
- max time kernel
148s - max time network
142s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
12/10/2026, 19:27
General
- Target jaffacakes118_Trojan-Downloader.Win32.CodecPack.sjt.exe
- Size 431KB
- Sample261012-x53lmses41
- SHA256 f800481349d3412e957fee86090c002da5335a8488b74fe7b10cdf54d1cd83a9
Malware Config
Signatures
- UPX packed file 2 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Drops file in Windows directory 2 IoCs
- Direct Volume Access: Opens a physical disk for reading 1 TTPs 1 IoCs
Opens a raw handle to a physical disk, which bypasses file system access controls and is used for disk inspection, anti-VM checks and privilege checks.
- Program crash 1 IoCs
- 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 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Modifies Internet Explorer settings 1 TTPs 1 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious use of SetWindowsHookEx 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan-Downloader.Win32.CodecPack.sjt.exe"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan-Downloader.Win32.CodecPack.sjt.exe"1⤵
- Drops file in Windows directory
- Direct Volume Access: Opens a physical disk for reading
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3316 -s 11722⤵
- Program crash
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 3316 -ip 33161⤵
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
memory/3316-0-0x0000000000400000-0x000000000046D000-memory.dmp
memory/3316-1-0x0000000000459000-0x000000000045A000-memory.dmp
memory/3316-2-0x0000000000730000-0x0000000000731000-memory.dmp
memory/3316-3-0x0000000000400000-0x000000000046D000-memory.dmp
memory/3316-6-0x0000000000400000-0x0000000000437000-memory.dmp
memory/3316-5354-0x0000000000400000-0x000000000046D000-memory.dmp
memory/3316-7575-0x0000000000400000-0x000000000046D000-memory.dmp
memory/3316-87232-0x0000000000400000-0x0000000000437000-memory.dmp
memory/3316-87236-0x0000000000400000-0x0000000000437000-memory.dmp