67955d3560870c43374af8554e3e351277f4d3a36b0519245b0152af846d4a13

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
12-02-2024 20:23

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-02-12_17ca42b9bf0c813fe847925782b48614_cryptolocker.exe
Size

47KB
MD5

17ca42b9bf0c813fe847925782b48614
SHA1

e9bc516d7b27f7f04c063b1c2edddab43b4d8205
SHA256

67955d3560870c43374af8554e3e351277f4d3a36b0519245b0152af846d4a13
SHA512

04c0a82f14e01d3ec2b7fc9acc270a2afebc35a6523033519ed46ccb36298b1b2953b9f154b1fa62f94af4987a16f07580809e6d9175be694efea15ab410c6ab
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLaHaMMm2X30E3aUn:V6QFElP6n+gMQMOtEvwDpjyaHaXmM

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

Processes:

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

Processes:

2024-02-12_17ca42b9bf0c813fe847925782b48614_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-635608581-3370340891-292606865-1000\Control Panel\International\Geo\Nation	2024-02-12_17ca42b9bf0c813fe847925782b48614_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

4216 asih.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4216	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-02-12_17ca42b9bf0c813fe847925782b48614_cryptolocker.exe

description	pid	process	target process
PID 4480 wrote to memory of 4216	4480	2024-02-12_17ca42b9bf0c813fe847925782b48614_cryptolocker.exe	asih.exe
PID 4480 wrote to memory of 4216	4480	2024-02-12_17ca42b9bf0c813fe847925782b48614_cryptolocker.exe	asih.exe
PID 4480 wrote to memory of 4216	4480	2024-02-12_17ca42b9bf0c813fe847925782b48614_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-02-12_17ca42b9bf0c813fe847925782b48614_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_17ca42b9bf0c813fe847925782b48614_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4480

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:4216

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

Loading Replay Monitor...

Downloads

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

Filesize
47KB

MD5
5914bf7d79886ec083b2b5b6387dc529

SHA1
f4c868b9276de3c35565dbf57ad2084da02cf57d

SHA256
a54786d783a7b88591eb9d1ba7e5b95e35364a8ef4e218f9102df10b85585c74

SHA512
c987cc41b66a3b4998dc1479994a5c5dde23bb54b933a02611e6eb851d99e476d94f714d4465cab3015ec03ae2d411a1610b5e0a28bd980b3fa029166ca51c57

Download Submit
memory/4216-17-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/4216-23-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/4480-0-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/4480-1-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/4480-2-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download