35ad29873b334a16ad3bd730b512fd35cc5b6e10f78f44e31fc0150180907203

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
20/04/2024, 17:10

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General

Target

2024-04-20_f56ac8c74578e6389ad629fc3fefbed2_cryptolocker.exe
Size

83KB
MD5

f56ac8c74578e6389ad629fc3fefbed2
SHA1

5169b2a407caf3791dcdb1b6e7fd5bab3e86326d
SHA256

35ad29873b334a16ad3bd730b512fd35cc5b6e10f78f44e31fc0150180907203
SHA512

f7d37429f64ee11ac096c90c9ab390b23bb7b14ccdcdd707dc2c90ad29914d77f0dfad769b42e6a892649018d1876ba8ba9eaf824238bb51e854a61cb256460e
SSDEEP

1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfWafHNBQ:vCjsIOtEvwDpj5H9YvQd24

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e9b1-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e9b1-12.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-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	2024-04-20_f56ac8c74578e6389ad629fc3fefbed2_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
740	misid.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 4872 wrote to memory of 740	4872	2024-04-20_f56ac8c74578e6389ad629fc3fefbed2_cryptolocker.exe	88
PID 4872 wrote to memory of 740	4872	2024-04-20_f56ac8c74578e6389ad629fc3fefbed2_cryptolocker.exe	88
PID 4872 wrote to memory of 740	4872	2024-04-20_f56ac8c74578e6389ad629fc3fefbed2_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-04-20_f56ac8c74578e6389ad629fc3fefbed2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-20_f56ac8c74578e6389ad629fc3fefbed2_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4872
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:740

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\misid.exe

Filesize
84KB

MD5
e45b81f695926ad7de18c2e018c9b070

SHA1
a89704ab0c78913020ef927626e5d7213bf9a468

SHA256
5ce201a5e04ee04c1f96aef462e354b900246d3bca4497890663deacf75fc742

SHA512
edeb646759fffaf242423fc73aaa70fcbade358234b78fd5ad2a7a54d790d0edc2a47432bc1f50f0266f81e6c7ccb38fa444bdce42bfa35de0ee1490814ded9d

Download Submit
memory/740-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/740-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4872-0-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/4872-1-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/4872-2-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download