0828f5c4a372d0f130de4960b053a9b8388f5980c3122512ec2dc0b0f5b6ceba

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
23/01/2024, 12:37

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General

Target

2024-01-23_cc27e2b38d907238ba3edd931b080ec8_cryptolocker.exe
Size

98KB
MD5

cc27e2b38d907238ba3edd931b080ec8
SHA1

58384af067f389cecfe873379b0c792ef05867ca
SHA256

0828f5c4a372d0f130de4960b053a9b8388f5980c3122512ec2dc0b0f5b6ceba
SHA512

f7f2e9bf72d973f8afa21b970179f1686e3dea83b92e8d99417187ecd7a455f9600c79b6533f73de0c26a058c5c447d58d6fe7d420a92b48b11d09a9c51e184f
SSDEEP

1536:26QFElP6n+gBQMOtEvwDpjQGYQbN/PKwNCWw6f+:26a+2OtEvwDpjtzw

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002325a-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002325a-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	2024-01-23_cc27e2b38d907238ba3edd931b080ec8_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2672	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 1496 wrote to memory of 2672	1496	2024-01-23_cc27e2b38d907238ba3edd931b080ec8_cryptolocker.exe	88
PID 1496 wrote to memory of 2672	1496	2024-01-23_cc27e2b38d907238ba3edd931b080ec8_cryptolocker.exe	88
PID 1496 wrote to memory of 2672	1496	2024-01-23_cc27e2b38d907238ba3edd931b080ec8_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-01-23_cc27e2b38d907238ba3edd931b080ec8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-23_cc27e2b38d907238ba3edd931b080ec8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1496
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2672

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
98KB

MD5
268c7a41eda449dabd605be83cd0ecc6

SHA1
8faadf624bf7422f00da3c94ceade0e8b6ab951a

SHA256
68e72254fdf20460166aa75aca48c629c2fa2b4b904e53dd668ac3e04fc50c83

SHA512
5186ecea5f30a6feb782510b4bb6e2232d8b8ea4a67a8b6b0f7af4066940f5176f1bb493465b76acc5c3aab4e4d4d570e95481830f81adb4b857e67df847ed37

Download Submit
memory/1496-0-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/1496-1-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/1496-2-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/2672-18-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2672-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download