4b854df572a030255b7c6e974a5e9a4c72be04dab0c28fb91f595725672db335

Analysis

max time kernel
148s
max time network
144s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
09/10/2026, 19:43

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
jaffacakes118_Trojan-Dropper.Win32.Siboco.b.exe
Size 60KB
Sample261009-ye94gaea95
SHA256 4b854df572a030255b7c6e974a5e9a4c72be04dab0c28fb91f595725672db335
MD5 80fbc8cddd3f8b037d29c75fdac2e0f7
SHA1 93d6aae4775b8a381e66f007b3af1d976cfb192a
SHA512 9f6036d2a7d7a799733c98fb77c8fc5de65d923b688b74eee9973dd31b896fca7dd054471cb025d47f632663261999e3e4777d9357477fa392b8018a7cb09fc2
SSDEEP 1536:/ngMsgLV/BevW5bd4Derx+CSGsNTI0uV/:/gMZpJO0RlYCGti
TLSH
T1D353F1235D325723EC0D2FF31D5FEA238FA521553310A2D72D8923A2A568BE967C0946
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

discovery persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4696	msmc.exe

Loads dropped DLL 1 IoCs

pid	Process
4696	msmc.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2304238888-3968896904-642854331-1000\Software\Microsoft\Windows\CurrentVersion\Run\msmc = "C:\\Windows\\system32\\msmc.exe"	jaffacakes118_Trojan-Dropper.Win32.Siboco.b.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\msmc.exe	jaffacakes118_Trojan-Dropper.Win32.Siboco.b.exe
File opened for modification	C:\Windows\SysWOW64\cfg.dat	jaffacakes118_Trojan-Dropper.Win32.Siboco.b.exe

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.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	jaffacakes118_Trojan-Dropper.Win32.Siboco.b.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	jaffacakes118_Trojan-Dropper.Win32.Siboco.b.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.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jaffacakes118_Trojan-Dropper.Win32.Siboco.b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msmc.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4696	msmc.exe
4696	msmc.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4696	msmc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4696	msmc.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 2552 wrote to memory of 4696	2552	jaffacakes118_Trojan-Dropper.Win32.Siboco.b.exe	89

C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan-Dropper.Win32.Siboco.b.exe
"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan-Dropper.Win32.Siboco.b.exe"
1⤵
- Adds Run key to start application
- Drops file in System32 directory
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2552
- C:\Windows\SysWOW64\msmc.exe
  "C:\Windows\system32\msmc.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SetWindowsHookEx
  PID:4696

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

~6966778368.tmp

Path C:\Users\Admin\AppData\Local\Temp\~6966778368.tmp
Size 3KB
SHA256 41e53ae00b206e74aaf00d3793f6869b5178cd1ecfb660c464847630315cb244
MD5 544bd9c5aa10ceda9444b71dcc543a35
SHA1 61de2826b2b88ab341a2c21d8afd86c508607d56
SHA512 ea0befe7695fd3090abef491c38e64aaa59682ac678543238de46eb1b7f5a44ad64a1a1d4de4b64f381e5075ea7aeaebccd5ac7bbf2c9198b75782fd09b57f93
TLSH
T195715F339BC8A6B3D084073320E711DB29F2422C53E180DF19A76936A589AD78D3EB20
MD5 SHA1 SHA512 TLSH

Submit Download

msmc.exe

Path C:\Windows\SysWOW64\msmc.exe
Size 46KB
SHA256 3de43b939331cef9a68bf5115988fd86a4425a71e567877bd1ce9ffccb48cc2d
MD5 1e3caa90f998277a7e659b35478e0176
SHA1 8d1d13c67afe79bcc6b3c3a474d4f34d7090e958
SHA512 0d0a0092b19df506a7dea5a7473d8f859a8570267af8c0bb9804acfc82c71e7fee30f9887127bfee098beb37809f8f4fbfcfda7c4fd2512f8eca927373e7edf6
SSDEEP 768:niMjgwZL4pmKPk2yev/u5bd4i20Hexu9x+eFSUdo4ORXTOlAq0HOVew36V:iMsgLV/BevW5bd4Derx+CSGsNTI0uV/
TLSH
T1DC23F1725D766703EC0D2FF32D5EEE238BA61245731061972D8C23A3A568BF867C584B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/4696-5-0x0000000000400000-0x0000000000414000-memory.dmp

Download

memory/4696-11-0x0000000000400000-0x0000000000414000-memory.dmp

Download