f59997f15a9b2269cf53d5422f9fb250cd411926b545792434fb17e2b6af53cb

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
20/02/2024, 15:25

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General

Target

2024-02-20_3d3e18cee4b1ab98fa380e259dd0b626_cryptolocker.exe
Size

48KB
MD5

3d3e18cee4b1ab98fa380e259dd0b626
SHA1

35be4dc1e746a5303ad6265ab9d5138c81a5ac00
SHA256

f59997f15a9b2269cf53d5422f9fb250cd411926b545792434fb17e2b6af53cb
SHA512

f9130ba579fed0a688a3ab16c2563e11c926e507eaa36943bdedf4e528c4e6f11716f803bc067e8e64d163b003efe1e069a46d8faf4fce777593803d3ba826dc
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjeJQ7pojakzo:V6a+pOtEvwDpj5

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023156-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023156-12.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-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	2024-02-20_3d3e18cee4b1ab98fa380e259dd0b626_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3880	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 2748 wrote to memory of 3880	2748	2024-02-20_3d3e18cee4b1ab98fa380e259dd0b626_cryptolocker.exe	84
PID 2748 wrote to memory of 3880	2748	2024-02-20_3d3e18cee4b1ab98fa380e259dd0b626_cryptolocker.exe	84
PID 2748 wrote to memory of 3880	2748	2024-02-20_3d3e18cee4b1ab98fa380e259dd0b626_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-20_3d3e18cee4b1ab98fa380e259dd0b626_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-20_3d3e18cee4b1ab98fa380e259dd0b626_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2748
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3880

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
48KB

MD5
a17c7e74b83af4936a9e5437c2436b0a

SHA1
8d4066e46f59ae127edd3d46797f0b37d02a5edf

SHA256
0e1c4a90792fce67f8b49a9830fac626fa0ac7ce7b32551acc44bc8b94db618a

SHA512
f8f28fda4906a9bd3a1429db059d795442ce4d1c84147994a4fd84f590aed7d86b5e588d2c1bfb6bfd1867ca218dcab42da9dba2825ac672d2abab064ac3dbc2

Download Submit
memory/2748-0-0x0000000002280000-0x0000000002286000-memory.dmp

Filesize
24KB

Download
memory/2748-1-0x0000000002280000-0x0000000002286000-memory.dmp

Filesize
24KB

Download
memory/2748-2-0x00000000021A0000-0x00000000021A6000-memory.dmp

Filesize
24KB

Download
memory/3880-17-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/3880-23-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download