3775a3bf04051915baa8bde00d33704c2d0e086e61b81368b2eb676720ff2d1f

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
19/09/2026, 09:23

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General

Target
jaffacakes118__895d5751fd254d86420640392608e10d.exe
Size 20KB
Sample260919-lcwrvaan21
SHA256 3775a3bf04051915baa8bde00d33704c2d0e086e61b81368b2eb676720ff2d1f
MD5 895d5751fd254d86420640392608e10d
SHA1 e53be72ddabcbd1a0a5025a101a58c2465b17a3f
SHA512 8f09c87ec1e444fc7bdd0923da45118b76cea06d909db311d8df7ca166b9d71b274c8a758c53f3a0ff307e2c7dc8a04b8b7d0ff935290465fdf7a4a8bb422f79
SSDEEP 384:rfpLJdFFsOv05haGDiO3Rgk2MfvCmDSu+nO6+F/:rRLJe1aGD/3Sk2W65bK
TLSH
T11292C0472B1F2991C30BD83005A7C96631AC1EA44F670EC1BEE8F267DC7F5A6D56980E
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

discovery persistence upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
5672	winupd.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-1-5-21-4154726816-2055034831-2297277433-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupd.exe = "C:\\Windows\\system32\\winupd.exe"	winupd.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4154726816-2055034831-2297277433-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupd.exe = "C:\\Windows\\system32\\winupd.exe"	jaffacakes118__895d5751fd254d86420640392608e10d.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\winupd.exe	jaffacakes118__895d5751fd254d86420640392608e10d.exe
File created	C:\Windows\SysWOW64\winupd.exe	jaffacakes118__895d5751fd254d86420640392608e10d.exe
File opened for modification	C:\Windows\SysWOW64\winupd.exe	winupd.exe
File created	C:\Windows\SysWOW64\winupd.exe	winupd.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/3584-0-0x0000000000400000-0x0000000000410000-memory.dmp	upx
behavioral2/files/0x0005000000016b3c-1.dat	upx
behavioral2/memory/3584-2-0x0000000000400000-0x0000000000410000-memory.dmp	upx
behavioral2/memory/5672-4-0x0000000000400000-0x0000000000410000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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__895d5751fd254d86420640392608e10d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupd.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3584	jaffacakes118__895d5751fd254d86420640392608e10d.exe
Token: SeDebugPrivilege	5672	winupd.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 3584 wrote to memory of 5672	3584	jaffacakes118__895d5751fd254d86420640392608e10d.exe	90

C:\Users\Admin\AppData\Local\Temp\jaffacakes118__895d5751fd254d86420640392608e10d.exe
"C:\Users\Admin\AppData\Local\Temp\jaffacakes118__895d5751fd254d86420640392608e10d.exe"
1⤵
- Adds Run key to start application
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3584
- C:\Windows\SysWOW64\winupd.exe
  "C:\Windows\system32\winupd.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:5672

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k GPSvcGroup
1⤵
PID:4888

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 Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

winupd.exe

Path C:\Windows\SysWOW64\winupd.exe
Size 20KB
SHA256 3775a3bf04051915baa8bde00d33704c2d0e086e61b81368b2eb676720ff2d1f
MD5 895d5751fd254d86420640392608e10d
SHA1 e53be72ddabcbd1a0a5025a101a58c2465b17a3f
SHA512 8f09c87ec1e444fc7bdd0923da45118b76cea06d909db311d8df7ca166b9d71b274c8a758c53f3a0ff307e2c7dc8a04b8b7d0ff935290465fdf7a4a8bb422f79
SSDEEP 384:rfpLJdFFsOv05haGDiO3Rgk2MfvCmDSu+nO6+F/:rRLJe1aGD/3Sk2W65bK
TLSH
T11292C0472B1F2991C30BD83005A7C96631AC1EA44F670EC1BEE8F267DC7F5A6D56980E
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3584-0-0x0000000000400000-0x0000000000410000-memory.dmp

Download

memory/3584-2-0x0000000000400000-0x0000000000410000-memory.dmp

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memory/5672-4-0x0000000000400000-0x0000000000410000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads