d6377223aa7f06167d3fb9ff3e85e415ed4bb065f601b5daed279ed27ba7863a

Analysis

max time kernel
148s
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
25-05-2024 04:32

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General

Target

2024-05-25_81bebe3f264f19dc251ddfc287aadb2e_cryptolocker.exe
Size

76KB
MD5

81bebe3f264f19dc251ddfc287aadb2e
SHA1

0a985e24751c36181375d0643322f25647618933
SHA256

d6377223aa7f06167d3fb9ff3e85e415ed4bb065f601b5daed279ed27ba7863a
SHA512

fe00a2b4a0df63e38e14af485facbf0176d2f1937abaeb681915ac55de940fa523ff2f82dbf34832fc0fb4a6c347704673a59edc0d20e644fb1f2c0438446af6
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1rHsoLkc:X6a+SOtEvwDpjBZYvQd2r

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000022f51-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000022f51-12.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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-05-25_81bebe3f264f19dc251ddfc287aadb2e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2740	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 2776 wrote to memory of 2740	2776	2024-05-25_81bebe3f264f19dc251ddfc287aadb2e_cryptolocker.exe	83
PID 2776 wrote to memory of 2740	2776	2024-05-25_81bebe3f264f19dc251ddfc287aadb2e_cryptolocker.exe	83
PID 2776 wrote to memory of 2740	2776	2024-05-25_81bebe3f264f19dc251ddfc287aadb2e_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-25_81bebe3f264f19dc251ddfc287aadb2e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-25_81bebe3f264f19dc251ddfc287aadb2e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2776
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2740

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
76KB

MD5
089935fa749d12f8f0bb77c92cb6e76e

SHA1
2717f6fc70d056f5023b08f80629999b86cb3117

SHA256
9371d2a635fc4bfd6c5c0537b39096df37d4c5c7c75f65b5062b823c264d2bf0

SHA512
4e5ec41078c5bb5171413ee39586429e739977c7b07e9fe89ff105291abcc386b4ee9d6ebd9dbf4f7621c41f4b6c8c2ed930e46b7afed346973e3de597c9c8d3

Download Submit
memory/2740-17-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/2740-23-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/2776-0-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/2776-1-0x0000000000650000-0x0000000000656000-memory.dmp

Filesize
24KB

Download
memory/2776-8-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download