cdbb7d0cfd838abbb36d2240e302719d09ec2ca430e4ebdb36aac6fc68e15e37

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
03/05/2024, 14:01

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General

Target

2024-05-03_1eaa7404dc6c4fcee790cc4558080005_cryptolocker.exe
Size

31KB
MD5

1eaa7404dc6c4fcee790cc4558080005
SHA1

4903fbb3cb8cbba9e4ee348c201a861f04c4cc9c
SHA256

cdbb7d0cfd838abbb36d2240e302719d09ec2ca430e4ebdb36aac6fc68e15e37
SHA512

fc02e0ee0a5abe7f90806463bf575801de9b923355d4708db315a82d364510ecd36dccb0f05a3dfb485f4d2de165e7b03c374f65c66f63759c0b1ea3b629c6e3
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTG7E:bG74zYcgT/Ekd0ryfjJ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4180-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000c000000023b5b-13.dat	CryptoLocker_rule2
behavioral2/memory/4180-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2760-18-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2760-27-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

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-1-5-21-17203666-93769886-2545153620-1000\Control Panel\International\Geo\Nation	2024-05-03_1eaa7404dc6c4fcee790cc4558080005_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2760	hasfj.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 4180 wrote to memory of 2760	4180	2024-05-03_1eaa7404dc6c4fcee790cc4558080005_cryptolocker.exe	84
PID 4180 wrote to memory of 2760	4180	2024-05-03_1eaa7404dc6c4fcee790cc4558080005_cryptolocker.exe	84
PID 4180 wrote to memory of 2760	4180	2024-05-03_1eaa7404dc6c4fcee790cc4558080005_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-05-03_1eaa7404dc6c4fcee790cc4558080005_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-03_1eaa7404dc6c4fcee790cc4558080005_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4180
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2760

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\hasfj.exe

Filesize
32KB

MD5
8c1fcda80ec7d70211883d4cd6ba303e

SHA1
7a8640e4e2ed9ac7a8270bf4fac63bef8081af77

SHA256
bed2c192f3fb2d6f10c14f739e91a5e1deded3e210a95c087562401dec2071bd

SHA512
e13c81396637f97d4d128770bc2a7a349d5bd784cf991394f44c00da2a01dfe4fb98e2757f44a4bab7ba28b9cb285fdbb25ff12d9a15a95a62ee2430fd2fc415

Download Submit
memory/2760-18-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2760-20-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/2760-26-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/2760-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4180-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4180-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4180-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4180-9-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4180-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download