a8430b8814df54ad76b968bdac3241b6d79526c7fa4bea28292398c8fece1876

Analysis

max time kernel
83s
max time network
152s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
14/10/2026, 02:21

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General

Target
jaffacakes118_HEUR.Trojan.Win32.Generic.exe
Size 31KB
Sample261014-cs5j9axtby
SHA256 a8430b8814df54ad76b968bdac3241b6d79526c7fa4bea28292398c8fece1876
MD5 41be1ba7bb0504abfd59cffb8dd139e7
SHA1 c7d60b2c6625633d932abbd54b8f7acfd7473763
SHA512 bbda3feb6eedee605f38813300f6b6643bfb4046360a0f0d7b7099809f4e68efde6f22024f9d740e3535f9493c2b381e9a41a58f0db887d0804aa9516a005c40
SSDEEP 768:0xvrR16lyByqFNHg0xpjzUCOwydxVRpsRjGBYPVz3:2DR1Jyq3LjgTvpsRyBG
TLSH
T1AEE2BE0E6370C438EC7138B74589F7AC96995A2DB541AE6FDB53EF304B307E01674989
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

bootkit defense_evasion discovery persistence

Malware Config

Signatures

Executes dropped EXE 3 IoCs

pid	Process
1120	wuaucldt.exe
4092	wuaucldt.exe
1516	wuaucldt.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-560646293-820748483-2532804640-1000\Software\Microsoft\Windows\CurrentVersion\Run\wuaucldt = "c:\\users\\admin\\wuaucldt.exe"	wuaucldt.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\wuaucldt = "c:\\windows\\system32\\wuaucldt.exe"	wuaucldt.exe

Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
defense_evasion

File Deletion
T1070.004

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	svchost.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	\??\c:\windows\SysWOW64\wuaucldt.exe	wuaucldt.exe
File created	\??\c:\windows\SysWOW64\wuaucldt.exe	jaffacakes118_HEUR.Trojan.Win32.Generic.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4092 set thread context of 2460	4092	wuaucldt.exe	91

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.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jaffacakes118_HEUR.Trojan.Win32.Generic.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wuaucldt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wuaucldt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1260 wrote to memory of 1120	1260	jaffacakes118_HEUR.Trojan.Win32.Generic.exe	89
PID 1120 wrote to memory of 4092	1120	wuaucldt.exe	90
PID 4092 wrote to memory of 2460	4092	wuaucldt.exe	91
PID 4092 wrote to memory of 2460	4092	wuaucldt.exe	91
PID 1260 wrote to memory of 6080	1260	jaffacakes118_HEUR.Trojan.Win32.Generic.exe	95
PID 1120 wrote to memory of 5932	1120	wuaucldt.exe	97

C:\Users\Admin\AppData\Local\Temp\jaffacakes118_HEUR.Trojan.Win32.Generic.exe
"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_HEUR.Trojan.Win32.Generic.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1260
- \??\c:\windows\SysWOW64\wuaucldt.exe
  c:\windows\system32\wuaucldt.exe
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1120
- - \??\c:\users\admin\wuaucldt.exe
    c:\users\admin\wuaucldt.exe
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4092
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\system32\svchost.exe
      4⤵
      Writes to the Master Boot Record (MBR)
      System Location Discovery: System Language Discovery
      PID:2460
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del c:\windows\syswow64\wuaucldt.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:5932
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c del c:\users\admin\appdata\local\temp\JAFFAC~1.EXE
  2⤵
  - System Location Discovery: System Language Discovery
  PID:6080

\??\c:\users\admin\wuaucldt.exe
c:\users\admin\wuaucldt.exe
1⤵
- Executes dropped EXE
PID:1516

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

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Indicator Removal

T1070

File Deletion

T1070.004

Modify Registry

T1112

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

wuaucldt.exe

Path C:\Windows\SysWOW64\wuaucldt.exe
Size 31KB
SHA256 a8430b8814df54ad76b968bdac3241b6d79526c7fa4bea28292398c8fece1876
MD5 41be1ba7bb0504abfd59cffb8dd139e7
SHA1 c7d60b2c6625633d932abbd54b8f7acfd7473763
SHA512 bbda3feb6eedee605f38813300f6b6643bfb4046360a0f0d7b7099809f4e68efde6f22024f9d740e3535f9493c2b381e9a41a58f0db887d0804aa9516a005c40
SSDEEP 768:0xvrR16lyByqFNHg0xpjzUCOwydxVRpsRjGBYPVz3:2DR1Jyq3LjgTvpsRyBG
TLSH
T1AEE2BE0E6370C438EC7138B74589F7AC96995A2DB541AE6FDB53EF304B307E01674989
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1120-11-0x0000000070000000-0x000000007000B000-memory.dmp

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memory/1260-1-0x0000000009000000-0x0000000009009000-memory.dmp

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memory/1260-5-0x0000000070000000-0x000000007000B000-memory.dmp

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memory/1260-4-0x0000000009000000-0x0000000009009000-memory.dmp

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memory/1260-70-0x0000000000400000-0x0000000000412000-memory.dmp

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memory/1260-0-0x0000000000400000-0x0000000000412000-memory.dmp

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memory/1516-64-0x0000000070000000-0x000000007000B000-memory.dmp

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memory/1516-65-0x0000000000400000-0x0000000000412000-memory.dmp

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memory/2460-23-0x0000000000570000-0x0000000000579000-memory.dmp

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memory/2460-25-0x0000000000570000-0x0000000000579000-memory.dmp

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memory/2460-28-0x0000000000570000-0x0000000000579000-memory.dmp

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memory/2460-29-0x0000000000570000-0x0000000000579000-memory.dmp

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memory/2460-24-0x0000000000570000-0x0000000000579000-memory.dmp

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memory/2460-22-0x0000000000570000-0x0000000000579000-memory.dmp

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memory/4092-21-0x0000000070000000-0x000000007000B000-memory.dmp

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memory/4092-1331-0x0000000000400000-0x0000000000412000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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