f27afb02d3dd2bd2fc532f4e2544ac71300ed88721420ffb5a6a92189b2ee65a

Analysis

max time kernel
142s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
22/02/2024, 22:44

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General

Target

2024-02-22_f1aa3aaaa9695ce1e2383a180c66b420_cryptolocker.exe
Size

38KB
MD5

f1aa3aaaa9695ce1e2383a180c66b420
SHA1

71c77e50438564b2b2fe446ea061dfe95d19ffd6
SHA256

f27afb02d3dd2bd2fc532f4e2544ac71300ed88721420ffb5a6a92189b2ee65a
SHA512

0c98add549ede317c5e0f88d9eae3cdd07037110234b1c477f4474785dee15c21183dd2e7bfb0403030fe6f3e614e62534f8d3b107b1617111d6f4a5eefbb242
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HK/wSK:X6QFElP6n+gJQMOtEvwDpjBsYK/K

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002312a-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002312a-12.dat	CryptoLocker_set1

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3844919115-497234255-166257750-1000\Control Panel\International\Geo\Nation	2024-02-22_f1aa3aaaa9695ce1e2383a180c66b420_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
320	asih.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2104 wrote to memory of 320	2104	2024-02-22_f1aa3aaaa9695ce1e2383a180c66b420_cryptolocker.exe	86
PID 2104 wrote to memory of 320	2104	2024-02-22_f1aa3aaaa9695ce1e2383a180c66b420_cryptolocker.exe	86
PID 2104 wrote to memory of 320	2104	2024-02-22_f1aa3aaaa9695ce1e2383a180c66b420_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-02-22_f1aa3aaaa9695ce1e2383a180c66b420_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-22_f1aa3aaaa9695ce1e2383a180c66b420_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2104
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:320

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
38KB

MD5
3044a7d6448ad454d1d780c28d7152e8

SHA1
446999eb9b10078b6d38092a160a62290f302125

SHA256
5e17ac131b51ec78dd51458bfc00284fc0f67d70362017546890facf10a06350

SHA512
494b8d88d93eb55e5f9936ef07dfcd0c091da77beac32f016ff5e28bcc1b60a3bcc835077c91460928b28756d692b0ffc9ce34ab9f986e9c7e60ec3b61b8cfd2

Download Submit
memory/320-17-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/320-18-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2104-0-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/2104-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/2104-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download