8e9f609533168ab1d8b89346a5b85bbda39cc45891e383acd6195cf75fe4f522

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
29-05-2024 04:27

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General

Target

2024-05-29_4add7f7ac08a1344df4a5eb31c7b9f32_cryptolocker.exe
Size

56KB
MD5

4add7f7ac08a1344df4a5eb31c7b9f32
SHA1

0d750b3f2559ce54348118550e42542899686984
SHA256

8e9f609533168ab1d8b89346a5b85bbda39cc45891e383acd6195cf75fe4f522
SHA512

f42d422a5e2fde8b32ad353dd00fdccbc09f9886e9bc000654f03dc346c783f0ba4c0c2a32e0d5e62bc97714ecc8b7e38f005531646b75c2e06e332cfb066e91
SSDEEP

768:bIDOw9UiaCHfjnE0Sfa7ilR0p9u6p4ICNBCXK9XbTb8pu3+:bIDOw9a0DwitDZzcTLO

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000a0000000233c2-12.dat	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-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	2024-05-29_4add7f7ac08a1344df4a5eb31c7b9f32_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4072	lossy.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 2744 wrote to memory of 4072	2744	2024-05-29_4add7f7ac08a1344df4a5eb31c7b9f32_cryptolocker.exe	83
PID 2744 wrote to memory of 4072	2744	2024-05-29_4add7f7ac08a1344df4a5eb31c7b9f32_cryptolocker.exe	83
PID 2744 wrote to memory of 4072	2744	2024-05-29_4add7f7ac08a1344df4a5eb31c7b9f32_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-29_4add7f7ac08a1344df4a5eb31c7b9f32_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-29_4add7f7ac08a1344df4a5eb31c7b9f32_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2744
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:4072

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\lossy.exe

Filesize
56KB

MD5
d8fc31abf04d6a820aebcde67e1c1ee9

SHA1
d2122250d24b2d37941132a99ad72fd12885a579

SHA256
3085f1f22746513c5cb6b713b49ba31b2a94924bb7cf72e8a64dbccc7fd7df7c

SHA512
0f8fda41892a941f1edab54fbc9c69f462bac014695fd151c4362971dc18c9bf0b384b0d599b520517a3090e3fdef0231130aecbac40aba13aaecac3da9476ed

Download Submit
memory/2744-0-0x0000000001FC0000-0x0000000001FC6000-memory.dmp

Filesize
24KB

Download
memory/2744-1-0x0000000001FE0000-0x0000000001FE6000-memory.dmp

Filesize
24KB

Download
memory/2744-8-0x0000000001FC0000-0x0000000001FC6000-memory.dmp

Filesize
24KB

Download
memory/4072-17-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/4072-23-0x0000000001F50000-0x0000000001F56000-memory.dmp

Filesize
24KB

Download