11feda943a94b282ac17c6baad22d80a71e8018909ad267e6b7970d035d995dd

max time kernel
149s
max time network
103s
platform
windows11-21h2_x64
resource
win11-20251231-en
resource tags

arch:x64arch:x86image:win11-20251231-enlocale:en-usos:windows11-21h2-x64system
submitted
10/01/2026, 15:59

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General

Target
eupdate.exe
Size 87KB
Sample260110-te14caev5f
SHA256 5d81fc6ab3e6c7bd353ee53297478fc10abfc7f851359f81a65dea74c70156ff
MD5 ccfaeed043685c189ef498c3c6f675e7
SHA1 6973b66e83db7f6d9ba957a6f9cca60a4983f0e8
SHA512 ab8f2d33ec8300d87423f53243f45b720e27d59ab7839d7dcb9d37572c1f4e34536221bfda25dee939218475f44915cac2cf4e9270881af15f53d916bd9dc204
SSDEEP 1536:ZzfLlsKsEJQgrsOCvojaWr2mACx9lRMgzIY/M0t4T5y5cum:Z7wngrsOCvov2mACDP/IY00eVyc
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

adware discovery persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 4 IoCs

pid	Process
3544	984361CFC60B2138104604.exe
908	984361CFC60B2138104604.exe
3932	984361CFC60B2138104604.exe
5392	984361CFC60B2138104604.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

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-1-5-21-3050491965-2933534114-1688612772-1000\Software\Microsoft\Windows\CurrentVersion\Run\ = "C:\\Users\\Admin\\AppData\\Roaming\\984361CFC60B2138104604\\984361CFC60B2138104604.exe"	eupdate.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral10/memory/2328-4-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral10/memory/2328-3-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral10/memory/2328-2-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral10/memory/2328-6-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral10/memory/2328-13-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral10/memory/908-22-0x0000000000400000-0x000000000040F000-memory.dmp	upx

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	984361CFC60B2138104604.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	984361CFC60B2138104604.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	984361CFC60B2138104604.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	984361CFC60B2138104604.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	eupdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	eupdate.exe

Modifies Internet Explorer Protected Mode 1 TTPs 2 IoCs

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3050491965-2933534114-1688612772-1000\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\2500 = "3"	984361CFC60B2138104604.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3050491965-2933534114-1688612772-1000\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\2500 = "3"	984361CFC60B2138104604.exe

Modifies Internet Explorer Protected Mode Banner 1 TTPs 2 IoCs

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3050491965-2933534114-1688612772-1000\Software\Microsoft\Internet Explorer\Main\NoProtectedModeBanner = "1"	984361CFC60B2138104604.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3050491965-2933534114-1688612772-1000\Software\Microsoft\Internet Explorer\Main\NoProtectedModeBanner = "1"	984361CFC60B2138104604.exe

Modifies Internet Explorer settings 1 TTPs 2 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3050491965-2933534114-1688612772-1000\Software\Microsoft\Internet Explorer\Main\TabProcGrowth = "0"	984361CFC60B2138104604.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3050491965-2933534114-1688612772-1000\Software\Microsoft\Internet Explorer\Main\TabProcGrowth = "0"	984361CFC60B2138104604.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4956	eupdate.exe
Token: SeDebugPrivilege	3544	984361CFC60B2138104604.exe
Token: SeDebugPrivilege	3932	984361CFC60B2138104604.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 4956 wrote to memory of 2328	4956	eupdate.exe	77
PID 4956 wrote to memory of 2328	4956	eupdate.exe	77
PID 4956 wrote to memory of 2328	4956	eupdate.exe	77
PID 4956 wrote to memory of 2328	4956	eupdate.exe	77
PID 2328 wrote to memory of 3544	2328	eupdate.exe	78
PID 3544 wrote to memory of 908	3544	984361CFC60B2138104604.exe	80
PID 3544 wrote to memory of 908	3544	984361CFC60B2138104604.exe	80
PID 3544 wrote to memory of 908	3544	984361CFC60B2138104604.exe	80
PID 3544 wrote to memory of 908	3544	984361CFC60B2138104604.exe	80
PID 3932 wrote to memory of 5392	3932	984361CFC60B2138104604.exe	82
PID 3932 wrote to memory of 5392	3932	984361CFC60B2138104604.exe	82
PID 3932 wrote to memory of 5392	3932	984361CFC60B2138104604.exe	82
PID 3932 wrote to memory of 5392	3932	984361CFC60B2138104604.exe	82

C:\Users\Admin\AppData\Local\Temp\eupdate.exe
"C:\Users\Admin\AppData\Local\Temp\eupdate.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4956
- C:\Users\Admin\AppData\Local\Temp\eupdate.exe
  "eupdate.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2328
- - C:\Users\Admin\AppData\Roaming\984361CFC60B2138104604\984361CFC60B2138104604.exe
    "C:\Users\Admin\AppData\Roaming\984361CFC60B2138104604\984361CFC60B2138104604.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3544
  - - C:\Users\Admin\AppData\Roaming\984361CFC60B2138104604\984361CFC60B2138104604.exe
      "984361CFC60B2138104604.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Modifies Internet Explorer Protected Mode
      Modifies Internet Explorer Protected Mode Banner
      Modifies Internet Explorer settings
      PID:908

C:\Users\Admin\AppData\Roaming\984361CFC60B2138104604\984361CFC60B2138104604.exe
C:\Users\Admin\AppData\Roaming\984361CFC60B2138104604\984361CFC60B2138104604.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3932
- C:\Users\Admin\AppData\Roaming\984361CFC60B2138104604\984361CFC60B2138104604.exe
  "984361CFC60B2138104604.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Modifies Internet Explorer Protected Mode
  - Modifies Internet Explorer Protected Mode Banner
  - Modifies Internet Explorer settings
  PID:5392

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

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

984361CFC60B2138104604.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\984361CFC60B2138104604.exe.log
Size 223B
SHA256 712b587551e9c17a033bb9293b4509288f5b7f955ddab1b87233e58a209d7558
MD5 e23f0ae3739110ece6cc291f7db3258f
SHA1 ccdc111a647ea78b7723a4045537587441851eb0
SHA512 f8e7fb7671d5f6fb70a8d67b0c783372c6d56d6fab9814e89492f9d9eafb327678b3d35d88a061824d508ee4fdcec523da6c5f6de215f4e8a9c6fde34ffed0ff
TLSH
T1CCD0A9B43766D0C408212B481E06BB9A11AF032B6268EE081955028AE92A6236B11AE6
MD5 SHA1 SHA512 TLSH

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984361CFC60B2138104604.exe

Path C:\Users\Admin\AppData\Roaming\984361CFC60B2138104604\984361CFC60B2138104604.exe
Size 87KB
SHA256 5d81fc6ab3e6c7bd353ee53297478fc10abfc7f851359f81a65dea74c70156ff
MD5 ccfaeed043685c189ef498c3c6f675e7
SHA1 6973b66e83db7f6d9ba957a6f9cca60a4983f0e8
SHA512 ab8f2d33ec8300d87423f53243f45b720e27d59ab7839d7dcb9d37572c1f4e34536221bfda25dee939218475f44915cac2cf4e9270881af15f53d916bd9dc204
SSDEEP 1536:ZzfLlsKsEJQgrsOCvojaWr2mACx9lRMgzIY/M0t4T5y5cum:Z7wngrsOCvov2mACDP/IY00eVyc
TLSH
T162935C0237874B52C44C157A40EB052467F5EBC72A73E78B3DD86299AF433F3AA45B89
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

prefs.js

Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\unlhmati.default-release\prefs.js
Size 7KB
SHA256 50a52b88a18d527c56a4d2cdc359b589a1620e15d9f6f9d396c208f115a80862
MD5 5f7e9193c7747cd6690aa2bacbccd2eb
SHA1 b8be36aea719e10d38de1b1ae68a0e0917664110
SHA512 e90276a640207e7a0020dbea3c99bd864fe9b917a6875808c664134eb0d22a169a811e6567225a75a430775da28ec949d2666a57983f31818614243ad6d6a581
SSDEEP 96:xHeUTUzmqGqsfbKHnR1zSvSSlydv9jGnkHSBw88H8L4cnAVfhUkyBaH:MjxRsfbQR+SS0SBw88ZxqPo
TLSH
T1DFE1107891488B7F78B677ACAC6849316AB2413BBBBF68D640B554C4014CF3442F96EB
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/908-22-0x0000000000400000-0x000000000040F000-memory.dmp

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memory/2328-3-0x0000000000400000-0x000000000040F000-memory.dmp

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memory/2328-6-0x0000000000400000-0x000000000040F000-memory.dmp

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memory/2328-2-0x0000000000400000-0x000000000040F000-memory.dmp

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memory/2328-13-0x0000000000400000-0x000000000040F000-memory.dmp

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memory/2328-4-0x0000000000400000-0x000000000040F000-memory.dmp

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memory/3544-14-0x0000000075431000-0x0000000075432000-memory.dmp

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memory/3544-15-0x0000000075430000-0x00000000759E1000-memory.dmp

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memory/3544-23-0x0000000075430000-0x00000000759E1000-memory.dmp

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memory/4956-12-0x0000000075430000-0x00000000759E1000-memory.dmp

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memory/4956-0-0x0000000075431000-0x0000000075432000-memory.dmp

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memory/4956-1-0x0000000075430000-0x00000000759E1000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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