b4f475da26023a8299fb3d635cfc303ca3f800745aa16e355ec53fbed7dd7a79

Analysis

max time kernel
148s
max time network
126s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
23/08/2026, 01:28

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General

Target
2026-08-22_bc92a16c1e24d9583ddd213b6b67e9cd_cryptolocker_elex.exe
Size 87KB
Sample260823-bvmxjsha29
SHA256 b4f475da26023a8299fb3d635cfc303ca3f800745aa16e355ec53fbed7dd7a79
MD5 bc92a16c1e24d9583ddd213b6b67e9cd
SHA1 eb7880176fcfbe2defa009228dc32e4a49b0ba1c
SHA512 078b90b97023cbd95092ade97885182422be804362fea3427c8f70b72ad35e8d03f53df9dd766b7050849d5d93e392fedf482e42e59b53b8f96038835f2e1803
SSDEEP 1536:Z6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwMgZ:Z6a+pOtEvwDpjtz1
TLSH
T1C593D8356EC50973D57386B1C9FB82B7A422BC663631498F54C9FB014D33786E961D0E
MD5 SHA1 SHA512 SSDEEP TLSH

Score

9^/10

defense_evasion discovery spyware trojan

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000a00000001b85c-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000a00000001b85c-12.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
3936	asih.exe

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	asih.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-22_bc92a16c1e24d9583ddd213b6b67e9cd_cryptolocker_elex.exe

Modifies system certificate store 2 TTPs 2 IoCs

defense_evasion spyware trojan

Install Root Certificate

T1553.004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\BDB1B93CD5978D45C6261455F8DB95C75AD153AF	asih.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\BDB1B93CD5978D45C6261455F8DB95C75AD153AF\Blob = 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	asih.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 2716 wrote to memory of 3936	2716	2026-08-22_bc92a16c1e24d9583ddd213b6b67e9cd_cryptolocker_elex.exe	89

C:\Users\Admin\AppData\Local\Temp\2026-08-22_bc92a16c1e24d9583ddd213b6b67e9cd_cryptolocker_elex.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-22_bc92a16c1e24d9583ddd213b6b67e9cd_cryptolocker_elex.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2716
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Modifies system certificate store
  PID:3936

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Subvert Trust Controls

T1553

Install Root Certificate

T1553.004

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

asih.exe

Path C:\Users\Admin\AppData\Local\Temp\asih.exe
Size 87KB
SHA256 551ffabc62700ff41ac0a9d0e9dece3d454d619b77f471583d59ce37a57be3b6
MD5 1f34788b7d4b5f07a5f4b49d9554f305
SHA1 a18ace0fea80a729ce77f142ad510503f8718afb
SHA512 bc14766c6d7a5eb85e0679bff265f76c51a9e060b37f2a9a428a57e6caf97678079ee54520578044a2a6f45a7d24ecc574c426106b3086e90ad9f4f6a75bd426
SSDEEP 1536:Z6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwMgH:Z6a+pOtEvwDpjtzr
TLSH
T1C193D8356EC50973D6B386B1C9FB82B7A822BC663631498F54C9FB014D33786E961D0E
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2716-0-0x0000000002240000-0x0000000002246000-memory.dmp

Download

memory/2716-1-0x0000000002240000-0x0000000002246000-memory.dmp

Download

memory/2716-2-0x0000000002260000-0x0000000002266000-memory.dmp

Download

memory/3936-18-0x0000000000840000-0x0000000000846000-memory.dmp

Download

memory/3936-24-0x0000000000820000-0x0000000000826000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads