2b6f13acb1eebaccbcb0aabffd7c19b57e3f83ece21b6ac68d33f106fc9e6971

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
25/04/2024, 13:55

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General

Target

2024-04-25_959dd5f867caaa84ef8a725b6175cd58_cryptolocker.exe
Size

75KB
MD5

959dd5f867caaa84ef8a725b6175cd58
SHA1

54b520a3428445f1f526528668d11a946b5c05b0
SHA256

2b6f13acb1eebaccbcb0aabffd7c19b57e3f83ece21b6ac68d33f106fc9e6971
SHA512

ce7940253ed61136f7dafb5e4fd17f1183c7de9ea385e6dbf4c97a268391c4d852c1ddbf3c367c8532692b6eadf3f3d17029119d1ffb9a968ba5f3914b78d333
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1siMOSc:X6a+SOtEvwDpjBZYvQd2F

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e97c-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e97c-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-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation	2024-04-25_959dd5f867caaa84ef8a725b6175cd58_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4920	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 4816 wrote to memory of 4920	4816	2024-04-25_959dd5f867caaa84ef8a725b6175cd58_cryptolocker.exe	89
PID 4816 wrote to memory of 4920	4816	2024-04-25_959dd5f867caaa84ef8a725b6175cd58_cryptolocker.exe	89
PID 4816 wrote to memory of 4920	4816	2024-04-25_959dd5f867caaa84ef8a725b6175cd58_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-04-25_959dd5f867caaa84ef8a725b6175cd58_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-25_959dd5f867caaa84ef8a725b6175cd58_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4816
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4920

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
75KB

MD5
d8efa409dd236183370d1abdbcd9b264

SHA1
519b5407bdaac2fc781cd3f4dcd67b84873f7b9f

SHA256
437a91ce2595d1c491675482325fc0f15920ae7fdb54062207570d46b92af559

SHA512
13152032da77f069c88c205f1fa26a5f7d488009c1cc1087c06d8fa7819111c3186dafa837fd4310179cb021d45af8ff310e092a8a2eb2173435ab0637bfbfab

Download Submit
memory/4816-0-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4816-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4816-2-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/4920-17-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/4920-20-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download