d0434cf08c29edf378b366dc0c5a7d9f9055ae0ce5fb2ba2be7e9193b2a04067

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
12/02/2024, 15:40

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General

Target

2024-02-12_90df9eae19d3a0e10af3081bc6f41ba9_cryptolocker.exe
Size

69KB
MD5

90df9eae19d3a0e10af3081bc6f41ba9
SHA1

d07a6c7c08f0d6dba4d928ebba012717e0c880ae
SHA256

d0434cf08c29edf378b366dc0c5a7d9f9055ae0ce5fb2ba2be7e9193b2a04067
SHA512

572b2b0145ca28d111733c1a96402c99f6708b4bccecb62428040cc5bd60e544c358692f9c6f7d0f521e3a84cc5a9ae7a0cb15cd9cc44e962ba552418858e5d1
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKU40:DW60sllyWOtEvwDpjwF85d

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/3416-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000002320a-13.dat	CryptoLocker_rule2
behavioral2/memory/3416-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/3416-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000700000002320a-13.dat	CryptoLocker_set1
behavioral2/memory/3416-17-0x0000000000500000-0x000000000050B000-memory.dmp	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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-02-12_90df9eae19d3a0e10af3081bc6f41ba9_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4724	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 3416 wrote to memory of 4724	3416	2024-02-12_90df9eae19d3a0e10af3081bc6f41ba9_cryptolocker.exe	84
PID 3416 wrote to memory of 4724	3416	2024-02-12_90df9eae19d3a0e10af3081bc6f41ba9_cryptolocker.exe	84
PID 3416 wrote to memory of 4724	3416	2024-02-12_90df9eae19d3a0e10af3081bc6f41ba9_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-12_90df9eae19d3a0e10af3081bc6f41ba9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_90df9eae19d3a0e10af3081bc6f41ba9_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3416
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4724

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
69KB

MD5
2317de2aca9a8a517e65fdf55b2920cc

SHA1
d3f481bba67ea3492e0232acabb0108a124f803d

SHA256
bca28974677d5f89aa8fccdabf040d0251c0a9cc69c0752c0309ebd6e8129643

SHA512
63816f70ad2c547efb07bcb07bb03dcf2be432627967723362ab6204c6eb4369f295f5de3d9ae13a16d02448ed3c4c5bfcec495da427be8a9a6704149b673bc6

Download Submit
memory/3416-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3416-1-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/3416-2-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/3416-3-0x0000000000650000-0x0000000000656000-memory.dmp

Filesize
24KB

Download
memory/3416-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4724-19-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download