f106d5febfec881ff3512fcf96bc7eadf57f6287bf24d2d41f80766e1ffeaa32

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
18/02/2024, 11:26

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General

Target

2024-02-18_131927f2ccb7f6f44a85816a62173d5f_cryptolocker.exe
Size

45KB
MD5

131927f2ccb7f6f44a85816a62173d5f
SHA1

d4d76bafe63ebce4fc590c5fff12af5a2f6b3d0d
SHA256

f106d5febfec881ff3512fcf96bc7eadf57f6287bf24d2d41f80766e1ffeaa32
SHA512

910bc60a5e0ddf2ed22a2c4e065ea89d2636fb5365e9ac178b875bf34af835e42b810809c1a2ed2352a58af3d715f8188b2d0d370cbc8d40cb5e4950dd1a8096
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLaHaMMm2X3rWYU:V6QFElP6n+gMQMOtEvwDpjyaHaXkYU

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002322f-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002322f-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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-02-18_131927f2ccb7f6f44a85816a62173d5f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1952	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 3916 wrote to memory of 1952	3916	2024-02-18_131927f2ccb7f6f44a85816a62173d5f_cryptolocker.exe	83
PID 3916 wrote to memory of 1952	3916	2024-02-18_131927f2ccb7f6f44a85816a62173d5f_cryptolocker.exe	83
PID 3916 wrote to memory of 1952	3916	2024-02-18_131927f2ccb7f6f44a85816a62173d5f_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-02-18_131927f2ccb7f6f44a85816a62173d5f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_131927f2ccb7f6f44a85816a62173d5f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3916
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1952

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
45KB

MD5
cf0777070d32989f35c788fce37e289a

SHA1
c5c5cfec2579b33d7295c51488da62accb935aa0

SHA256
258e20bf6561059442da694644c8cc6f23f0c262313b8cb9689fe5a74e681ed8

SHA512
04ef9303776901b50a9ee94dd0414ad9d656bb63b0215d41943b37c8f6cc492558ee936f6af779ad48f054b83b6c6e83118017330f45ecda69292ddf3c400ac5

Download Submit
memory/1952-17-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/1952-23-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/3916-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3916-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3916-2-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download