fbeeb9207d2fbaeff8591c3d4ecf61b701c2c61028a3663b3744ee4afbf63be5

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
17-02-2024 21:54

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General

Target

2024-02-17_b3cde6cbbbba7adfa85056eef8d1bd37_cryptolocker.exe
Size

54KB
MD5

b3cde6cbbbba7adfa85056eef8d1bd37
SHA1

cc6264b09c3d770498dfeeeac6cbbe261d5aa087
SHA256

fbeeb9207d2fbaeff8591c3d4ecf61b701c2c61028a3663b3744ee4afbf63be5
SHA512

e95a587b036cfda30fd267ad31e6ff2e54ce6b6f6a36a66016d6afe7545d036a248aa4731f0c247858682c688e6ba2de264adb1a069ed0cc1340099714546c79
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vaTiSfQaV2LJm:X6QFElP6n+gJBMOtEvwDpjBtE1yILJm

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023222-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023222-12.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-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation	2024-02-17_b3cde6cbbbba7adfa85056eef8d1bd37_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1928	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 5196 wrote to memory of 1928	5196	2024-02-17_b3cde6cbbbba7adfa85056eef8d1bd37_cryptolocker.exe	85
PID 5196 wrote to memory of 1928	5196	2024-02-17_b3cde6cbbbba7adfa85056eef8d1bd37_cryptolocker.exe	85
PID 5196 wrote to memory of 1928	5196	2024-02-17_b3cde6cbbbba7adfa85056eef8d1bd37_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-17_b3cde6cbbbba7adfa85056eef8d1bd37_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-17_b3cde6cbbbba7adfa85056eef8d1bd37_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5196
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1928

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
54KB

MD5
eb4b4de3449155a573594e5697945e2c

SHA1
0a2019ad559322d47afc1be21ac7a2f9e72318be

SHA256
a9353765008e35ba0e40f87722f7c01588ec32f28f56ab713e098067b99a1b9c

SHA512
7eb42b30716b64cc7f5c7b75db8b532feb489e249df4e3936d2a1a664589f58ff623bed9267c09ebe6d91a625717421b6da43d96e9808bd85b62145f82298a3d

Download Submit
memory/1928-19-0x0000000001F60000-0x0000000001F66000-memory.dmp

Filesize
24KB

Download
memory/1928-17-0x0000000001F80000-0x0000000001F86000-memory.dmp

Filesize
24KB

Download
memory/5196-0-0x00000000007F0000-0x00000000007F6000-memory.dmp

Filesize
24KB

Download
memory/5196-1-0x00000000007F0000-0x00000000007F6000-memory.dmp

Filesize
24KB

Download
memory/5196-2-0x0000000000810000-0x0000000000816000-memory.dmp

Filesize
24KB

Download