8774b37fc88708def4b46d3c76270b0ccb7b1b24361608bd67755664196f2e90

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
10/04/2024, 02:42

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General

Target

2024-04-10_66a1681880b53e40fa2a9ddbd1f12ed3_cryptolocker.exe
Size

129KB
MD5

66a1681880b53e40fa2a9ddbd1f12ed3
SHA1

fc8ef04847649aa31ada9dc3fdc1f62b6abb6530
SHA256

8774b37fc88708def4b46d3c76270b0ccb7b1b24361608bd67755664196f2e90
SHA512

d487510b073ec30c1212a5fbc5a36accc001beb8ceb292c1414c7013f5241c2890b600ef9a2299fd639a09be3fc6b38b051f96bae0dcfdf7987573505db93463
SSDEEP

1536:u6QFElP6n+gWMOtEvwDpjJGYQbN/PKwNgpwb2CH:u6a++OtEvwDpj6zD

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023131-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023131-12.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-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	2024-04-10_66a1681880b53e40fa2a9ddbd1f12ed3_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4668	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 3252 wrote to memory of 4668	3252	2024-04-10_66a1681880b53e40fa2a9ddbd1f12ed3_cryptolocker.exe	88
PID 3252 wrote to memory of 4668	3252	2024-04-10_66a1681880b53e40fa2a9ddbd1f12ed3_cryptolocker.exe	88
PID 3252 wrote to memory of 4668	3252	2024-04-10_66a1681880b53e40fa2a9ddbd1f12ed3_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-04-10_66a1681880b53e40fa2a9ddbd1f12ed3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-10_66a1681880b53e40fa2a9ddbd1f12ed3_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3252
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4668

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
129KB

MD5
2c43a9e304a0db8c7777547857498327

SHA1
598cdf99b0dc9d894724e7b33c762a38249abba0

SHA256
31c44fe3cc8e1773eecba57e6ab1fb17aea86d533aac43cb65be750c901061a6

SHA512
701d763f34ccde8776deb912651d62ef73216dc4fb870b0b74810d222e3e6acfae54c8364e541cd115ebfbfc72f40fffdf1c41dce2772d3ce027f5e3faa038e1

Download Submit
memory/3252-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3252-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3252-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4668-17-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4668-23-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download