9b6ee6f26b635792651b7cbfe95eeb73aa11bff2b735f9aad7330100b1498d8d

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
12/03/2024, 07:34

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General

Target

2024-03-12_d8e30b06a48c76dd5a9f2cc0ddd7e0e9_cryptolocker.exe
Size

55KB
MD5

d8e30b06a48c76dd5a9f2cc0ddd7e0e9
SHA1

d59a4bc1468862527f2c8f52af462e6a71201c0d
SHA256

9b6ee6f26b635792651b7cbfe95eeb73aa11bff2b735f9aad7330100b1498d8d
SHA512

957b72a5897e9f0da98b9f63736141105e6b662094282e8c13decb20beb6dbf6bfbfdaed9fe2945a089d913c770e368d757da3c5d26fb37b0c6811d5eb0ea893
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/iVTab3GRuv3VylSV/CCjgd:79mqyNhQMOtEvwDpjBPY7xv3g8Od

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/4060-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000c000000023170-13.dat	CryptoLocker_rule2
behavioral2/memory/4060-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/4060-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000c000000023170-13.dat	CryptoLocker_set1
behavioral2/memory/4060-16-0x0000000000500000-0x000000000050F000-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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-03-12_d8e30b06a48c76dd5a9f2cc0ddd7e0e9_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3372	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 4060 wrote to memory of 3372	4060	2024-03-12_d8e30b06a48c76dd5a9f2cc0ddd7e0e9_cryptolocker.exe	85
PID 4060 wrote to memory of 3372	4060	2024-03-12_d8e30b06a48c76dd5a9f2cc0ddd7e0e9_cryptolocker.exe	85
PID 4060 wrote to memory of 3372	4060	2024-03-12_d8e30b06a48c76dd5a9f2cc0ddd7e0e9_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-03-12_d8e30b06a48c76dd5a9f2cc0ddd7e0e9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-12_d8e30b06a48c76dd5a9f2cc0ddd7e0e9_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4060
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3372

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
55KB

MD5
ab4cac470758457956e5e386e5da6a10

SHA1
9192cafe8dfc3b8616105001f986caeb3b3fe53b

SHA256
7a71ab762c4a831ef077ee57324830a0df3782f19417e1b1f2d923c6bf1677e1

SHA512
dcea301d3b9042666b264ffe96b8afb80ac843038184c3cde334614b57475cb151bcb5fe031188d9552f4c4e4ee3e794e1c50bf998d9194381a5f9ce06651faf

Download Submit
memory/3372-19-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/3372-21-0x0000000000570000-0x0000000000576000-memory.dmp

Filesize
24KB

Download
memory/4060-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4060-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4060-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4060-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/4060-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download