Analysis
- max time kernel
67s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
06/10/2026, 16:01
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe
Resource
win10v2004-20260911-en
windows10-2004-x64
10 signatures
150 seconds
Behavioral task
behavioral2
Sample
jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe
Resource
win11ltsc2024-20260911-en
windows11-ltsc_2024-x64
10 signatures
150 seconds
General
- Target jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe
- Size 68KB
- Sample261006-tf6p8aav91
- SHA256 cde2f394800822ae9d88426c0b6de9747062971885b22a2bb55b8c4fc36496c9
- MD5 43ddb86a7b3271fc000fa5c035b2e37c
- SHA1 1e2827fdf027fc6efd7fa7df69587ceede9e3980
- SHA512 6f7a67402664485af3600fc024d5a197a139c39cd1ad27db79762f71c0cc4ef095726c3b312abda979cdc4bbc2629ec123fd15bedb68231eff3e468d246ea08d
- SSDEEP 384:z8bHl4m6DCizdwW3st4pD29zs604vOH89R8HDsSt/bHl:Sl45DFRwXt6D2mLwOqqjLtTl
- TLSH T1F4632C13FA6CC167E159C3F22934974A680A7D3085B2ED0E75965F19CAB22D349F0B1F
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
7/10
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 5800 STKB.exe - Adds Run key to start application 2 TTPs 4 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\RavTimeXP = "C:\\Windows\\system32\\wbem\\ISAPAP.exe" STKB.exe Set value (str) \REGISTRY\USER\S-1-5-21-650287814-2715975232-1279715623-1000\Software\Microsoft\Windows\CurrentVersion\Run\STKB = "C:\\Windows\\system\\STKB.exe" STKB.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\RavTimeXP = "C:\\Windows\\system32\\wbem\\ISAPAP.exe" jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe Set value (str) \REGISTRY\USER\S-1-5-21-650287814-2715975232-1279715623-1000\Software\Microsoft\Windows\CurrentVersion\Run\STKB = "C:\\Windows\\system\\STKB.exe" jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe - Enumerates connected drives 3 TTPs 42 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\V: STKB.exe File opened (read-only) \??\W: STKB.exe File opened (read-only) \??\M: jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe File opened (read-only) \??\N: jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe File opened (read-only) \??\H: STKB.exe File opened (read-only) \??\I: STKB.exe File opened (read-only) \??\M: STKB.exe File opened (read-only) \??\X: STKB.exe File opened (read-only) \??\Z: STKB.exe File opened (read-only) \??\V: jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe File opened (read-only) \??\Z: jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe File opened (read-only) \??\O: STKB.exe File opened (read-only) \??\Y: STKB.exe File opened (read-only) \??\G: jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe File opened (read-only) \??\T: jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe File opened (read-only) \??\U: jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe File opened (read-only) \??\J: STKB.exe File opened (read-only) \??\P: STKB.exe File opened (read-only) \??\U: STKB.exe File opened (read-only) \??\K: jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe File opened (read-only) \??\P: jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe File opened (read-only) \??\D: STKB.exe File opened (read-only) \??\G: STKB.exe File opened (read-only) \??\O: jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe File opened (read-only) \??\X: jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe File opened (read-only) \??\N: STKB.exe File opened (read-only) \??\S: STKB.exe File opened (read-only) \??\H: jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe File opened (read-only) \??\R: jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe File opened (read-only) \??\W: jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe File opened (read-only) \??\Y: jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe File opened (read-only) \??\L: STKB.exe File opened (read-only) \??\Q: STKB.exe File opened (read-only) \??\R: STKB.exe File opened (read-only) \??\D: jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe File opened (read-only) \??\I: jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe File opened (read-only) \??\Q: jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe File opened (read-only) \??\J: jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe File opened (read-only) \??\L: jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe File opened (read-only) \??\S: jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe File opened (read-only) \??\K: STKB.exe File opened (read-only) \??\T: STKB.exe - Drops autorun.inf file 1 TTPs 12 IoCs
Malware can abuse Windows Autorun to spread further via attached volumes.
description ioc Process File opened for modification \??\f:\Autorun.inf jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe File created \??\c:\Autorun.inf STKB.exe File created \??\e:\Autorun.inf STKB.exe File created \??\f:\Autorun.inf STKB.exe File created \??\c:\Autorun.inf jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe File opened for modification \??\c:\Autorun.inf jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe File created \??\e:\Autorun.inf jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe File opened for modification \??\e:\Autorun.inf jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe File opened for modification \??\c:\Autorun.inf STKB.exe File opened for modification \??\e:\Autorun.inf STKB.exe File opened for modification \??\f:\Autorun.inf STKB.exe File created \??\f:\Autorun.inf jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe - Drops file in System32 directory 9 IoCs
description ioc Process File created C:\Windows\SysWOW64\CONFIG.exe jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe File created C:\Windows\SysWOW64\wbem\ISAPAP.exe jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe File opened for modification C:\Windows\SysWOW64\CONFIG.exe jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe File opened for modification C:\Windows\SysWOW64\wbem\ISAPAP.exe jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe File created C:\Windows\SysWOW64\CONFIG.exe STKB.exe File opened for modification C:\Windows\SysWOW64\wbem\ISAPAP.exe STKB.exe File opened for modification C:\Windows\SysWOW64\CONFIG.exe STKB.exe File opened for modification C:\Windows\SysWOW64\IMAG.JPEG STKB.exe File opened for modification C:\Windows\SysWOW64\IMAG.JPEG jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe - Drops file in Windows directory 6 IoCs
description ioc Process File created C:\Windows\system\STKB.exe jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe File opened for modification C:\Windows\User.exe jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe File opened for modification C:\Windows\system\STKB.exe jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe File opened for modification C:\Windows\User.exe STKB.exe File opened for modification C:\Windows\system\STKB.exe STKB.exe File created C:\Windows\User.exe jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe - System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language STKB.exe -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-650287814-2715975232-1279715623-1000\Software\Microsoft\Internet Explorer\Main jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe Key created \REGISTRY\USER\S-1-5-21-650287814-2715975232-1279715623-1000\Software\Microsoft\Internet Explorer\Main STKB.exe - Modifies Internet Explorer start page 1 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-650287814-2715975232-1279715623-1000\Software\Microsoft\Internet Explorer\Main\Start Page = "http://www.sajjadjoon72.mihanblog.com" jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe Set value (str) \REGISTRY\USER\S-1-5-21-650287814-2715975232-1279715623-1000\Software\Microsoft\Internet Explorer\Main\Start Page = "http://www.sajjadjoon72.mihanblog.com" STKB.exe - Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 3796 jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe 5800 STKB.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan-Dropper.Win32.Agent.jzxt.exe"1⤵
- Adds Run key to start application
- Enumerates connected drives
- Drops autorun.inf file
- Drops file in System32 directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Modifies Internet Explorer start page
- Suspicious use of SetWindowsHookEx
PID:3796
-
C:\Windows\system\STKB.exeC:\Windows\system\STKB.exe1⤵
- Executes dropped EXE
- Adds Run key to start application
- Enumerates connected drives
- Drops autorun.inf file
- Drops file in System32 directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Modifies Internet Explorer start page
- Suspicious use of SetWindowsHookEx
PID:5800
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\System\STKB.exe
- Size 68KB
- SHA256 cde2f394800822ae9d88426c0b6de9747062971885b22a2bb55b8c4fc36496c9
- MD5 43ddb86a7b3271fc000fa5c035b2e37c
- SHA1 1e2827fdf027fc6efd7fa7df69587ceede9e3980
- SHA512 6f7a67402664485af3600fc024d5a197a139c39cd1ad27db79762f71c0cc4ef095726c3b312abda979cdc4bbc2629ec123fd15bedb68231eff3e468d246ea08d
- SSDEEP 384:z8bHl4m6DCizdwW3st4pD29zs604vOH89R8HDsSt/bHl:Sl45DFRwXt6D2mLwOqqjLtTl
- TLSH T1F4632C13FA6CC167E159C3F22934974A680A7D3085B2ED0E75965F19CAB22D349F0B1F
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path F:\Autorun.inf
- Size 138B
- SHA256 01b910c1e5c312235e2eab66d89fa53a981ae2bd9d52f7612a232b7d1ce35baf
- MD5 791b2265200269af0639198aeed2837f
- SHA1 5c80c83aed0ceaf786d33171156edb85f117a164
- SHA512 df84ccdc713b1a46953b3a79bb2c5374dfe1e4d814e31e10422484ca68d26937ed416c944fc82935920388eba8a6e47ce46760897c3b5ab2361f1cf7d700bdf2
- TLSH T13EC002DBE6AE108F1B0D2402D28645D27D9792F453E911DA86ACAC84E891124C7E4197
- MD5 SHA1 SHA512 TLSH