4d65c8845b68da5fa654919cf8930bc0b85b6ef6cb82d0053b982945a0014ff8

Analysis

max time kernel
151s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
15/03/2024, 13:53

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General

Target

2024-03-15_99a6ddf994c0fecf64bd5345b5f3e98c_cryptolocker.exe
Size

49KB
MD5

99a6ddf994c0fecf64bd5345b5f3e98c
SHA1

70d0ae83b1cfa18e0d2f630183407733e9d7597e
SHA256

4d65c8845b68da5fa654919cf8930bc0b85b6ef6cb82d0053b982945a0014ff8
SHA512

0346da28856c8da95e43f8a06a35d678c392a135cf23fce661e09187313332066e9a5c094354fc9d19ea6f537934108a7392729b0153e2fb3439105d6e73a4ad
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaaEqbIu55id3AMWZT:X6QFElP6n+gJQMOtEvwDpjB0GIWiWLN

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000002271f-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000002271f-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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-03-15_99a6ddf994c0fecf64bd5345b5f3e98c_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2928	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 224 wrote to memory of 2928	224	2024-03-15_99a6ddf994c0fecf64bd5345b5f3e98c_cryptolocker.exe	99
PID 224 wrote to memory of 2928	224	2024-03-15_99a6ddf994c0fecf64bd5345b5f3e98c_cryptolocker.exe	99
PID 224 wrote to memory of 2928	224	2024-03-15_99a6ddf994c0fecf64bd5345b5f3e98c_cryptolocker.exe	99

C:\Users\Admin\AppData\Local\Temp\2024-03-15_99a6ddf994c0fecf64bd5345b5f3e98c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-15_99a6ddf994c0fecf64bd5345b5f3e98c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:224
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2928

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4136 --field-trial-handle=3192,i,2785050981002401924,4037047756083432660,262144 --variations-seed-version /prefetch:8
1⤵
PID:4016

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
49KB

MD5
332afb043bdb9c9c79dbad2424621f7c

SHA1
0be1193aabea778ebfbd72e2387017fb3a6198ed

SHA256
21ac4e1963f025796c44ddfaa8648bf78bbf7a981ff3a070d23d53cfb70e29e6

SHA512
8ebe5cfc41c6d27ea22c31aa279a6692830c6e6a2860f22a124bf85e88759d0fc479fd20eef7c375b45bbec5df76986e5071f9340768a861496c19bc0d58eceb

Download Submit
memory/224-0-0x0000000002320000-0x0000000002326000-memory.dmp

Filesize
24KB

Download
memory/224-1-0x0000000002320000-0x0000000002326000-memory.dmp

Filesize
24KB

Download
memory/224-2-0x00000000021A0000-0x00000000021A6000-memory.dmp

Filesize
24KB

Download
memory/2928-17-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2928-18-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download