e208b0ba54f6e6d77011721ce31f9a619a20c970048525d05a93ae4a8524402c

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
14/06/2024, 09:44

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General

Target

2024-06-14_6992c1e9dc6ec2a7604b6dbf633b0c4b_cryptolocker.exe
Size

71KB
MD5

6992c1e9dc6ec2a7604b6dbf633b0c4b
SHA1

3e0c6abd1d5bb0b6e018c56f7f10d35617ac7720
SHA256

e208b0ba54f6e6d77011721ce31f9a619a20c970048525d05a93ae4a8524402c
SHA512

0cf3e048e34004fb1ff8be65143ae579e64d51088c0c354e5cf2aa3c36b8affeb8eae527630fbe50a2ee2c149b1fe73c84b9df5753073b815aa83f2d9e03b9f3
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUNZO/:DW60sllyWOtEvwDpjwF85Y

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/1384-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000022f51-13.dat	CryptoLocker_rule2
behavioral2/memory/1384-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/1384-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0008000000022f51-13.dat	CryptoLocker_set1
behavioral2/memory/1384-16-0x0000000000500000-0x000000000050B000-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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-06-14_6992c1e9dc6ec2a7604b6dbf633b0c4b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4244	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 1384 wrote to memory of 4244	1384	2024-06-14_6992c1e9dc6ec2a7604b6dbf633b0c4b_cryptolocker.exe	82
PID 1384 wrote to memory of 4244	1384	2024-06-14_6992c1e9dc6ec2a7604b6dbf633b0c4b_cryptolocker.exe	82
PID 1384 wrote to memory of 4244	1384	2024-06-14_6992c1e9dc6ec2a7604b6dbf633b0c4b_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-14_6992c1e9dc6ec2a7604b6dbf633b0c4b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-14_6992c1e9dc6ec2a7604b6dbf633b0c4b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1384
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4244

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
72KB

MD5
1e43cfa251c7e21a496c213faef78a97

SHA1
c9e27d7c0a0f567167dec9387392617e8e1017cb

SHA256
f495b550e8ae7b3a63fd6841b7de4bdc02354dc25221623b35b6d1edbaa965f4

SHA512
d1f85c8e1d41ac324d05ddabb490529071cbf2a128c3e47055c8b084293327b004bc3407fb7576fa22e5ab7725ff493848ad304ab2c1276df488d5e0acef17c7

Download Submit
memory/1384-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1384-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1384-2-0x0000000000850000-0x0000000000856000-memory.dmp

Filesize
24KB

Download
memory/1384-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1384-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4244-19-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/4244-25-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download