c1a14f34a1203fa840f0aedb97b73da7a2bdaa7a57bdf070868c23e66d025931

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
27/03/2024, 03:42

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General

Target

2024-03-27_5147cee8ed5c9ddf26b53b3ea1ab959d_cryptolocker.exe
Size

74KB
MD5

5147cee8ed5c9ddf26b53b3ea1ab959d
SHA1

31f57e2c98f87ed90fbb17ef96e64e6ccafe98d4
SHA256

c1a14f34a1203fa840f0aedb97b73da7a2bdaa7a57bdf070868c23e66d025931
SHA512

aa0b95913dec6b32db3f6e239f0eff5a06cdefa9edbe5d2b232e033073b6b6c30e8968fff9b63b267e3d94197f4949d16234c7b4012321eae2b9291f98e4334c
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1s5:X6a+SOtEvwDpjBZYvQd22

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e9a0-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e9a0-12.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-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	2024-03-27_5147cee8ed5c9ddf26b53b3ea1ab959d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3108	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 1952 wrote to memory of 3108	1952	2024-03-27_5147cee8ed5c9ddf26b53b3ea1ab959d_cryptolocker.exe	90
PID 1952 wrote to memory of 3108	1952	2024-03-27_5147cee8ed5c9ddf26b53b3ea1ab959d_cryptolocker.exe	90
PID 1952 wrote to memory of 3108	1952	2024-03-27_5147cee8ed5c9ddf26b53b3ea1ab959d_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-03-27_5147cee8ed5c9ddf26b53b3ea1ab959d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-27_5147cee8ed5c9ddf26b53b3ea1ab959d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1952
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3108

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
74KB

MD5
b180941f83bd705b9dfced65cdf6cf20

SHA1
4abe443ff1d745486affe816fcb698c2c05f6b0d

SHA256
a0fb117d3276c073f8e74830a78315acf4bb61ff094e9b4cee4d7bf1d87f68c5

SHA512
fce60f6a37c702b0bba085c276859b641a23ebf67670a1b216052a29cbc3a6a62dda395cb2f5cfa558ad734e2ec66b07376c8f0a34673a046dc39c191f414b85

Download Submit
memory/1952-0-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/1952-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/1952-2-0x0000000000640000-0x0000000000646000-memory.dmp

Filesize
24KB

Download
memory/3108-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3108-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download