a8e47e51f8d88910a3a5338d170f13f2ce8786e368e3c6ae98ef16818b50d074

Analysis

max time kernel
141s
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
23-05-2024 00:45

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-23_770614f32fe6318c25fffb6ab0e18bca_cryptolocker.exe
Size

65KB
MD5

770614f32fe6318c25fffb6ab0e18bca
SHA1

c436fcc5b57c45c1a54ba7290faeefc96c78f9b7
SHA256

a8e47e51f8d88910a3a5338d170f13f2ce8786e368e3c6ae98ef16818b50d074
SHA512

965f8aaee9d38efb2cb6600017224558f6ad35675ff140cb3b1ec7acb7354806d152a082d5979491caced548dc5a4ce3082783d08d34d69a7c3e60af9fc46f77
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF299Np:aq7tdgI2MyzNORQtOflIwoHNV2XBFV77

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\hurok.exe	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\hurok.exe	CryptoLocker_set1

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

2024-05-23_770614f32fe6318c25fffb6ab0e18bca_cryptolocker.exehurok.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-05-23_770614f32fe6318c25fffb6ab0e18bca_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

Processes:

hurok.exe

pid process

5036 hurok.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
5036	hurok.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-23_770614f32fe6318c25fffb6ab0e18bca_cryptolocker.exe

description	pid	process	target process
PID 5112 wrote to memory of 5036	5112	2024-05-23_770614f32fe6318c25fffb6ab0e18bca_cryptolocker.exe	hurok.exe
PID 5112 wrote to memory of 5036	5112	2024-05-23_770614f32fe6318c25fffb6ab0e18bca_cryptolocker.exe	hurok.exe
PID 5112 wrote to memory of 5036	5112	2024-05-23_770614f32fe6318c25fffb6ab0e18bca_cryptolocker.exe	hurok.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_770614f32fe6318c25fffb6ab0e18bca_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_770614f32fe6318c25fffb6ab0e18bca_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5112

C:\Users\Admin\AppData\Local\Temp\hurok.exe
"C:\Users\Admin\AppData\Local\Temp\hurok.exe"
2⤵
- Checks computer location settings
- Executes dropped EXE
PID:5036

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=3488 --field-trial-handle=3088,i,14310325015283915034,7660943942870463106,262144 --variations-seed-version /prefetch:8
1⤵
PID:492

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

Loading Replay Monitor...

Downloads

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

Filesize
66KB

MD5
cc86e734cbfe60783fe82b6a06329668

SHA1
67a1457861ce79b924984cfe2e5fbb68b5b3059d

SHA256
356ba52ae4c60dd61577ca771310c8dca36898a50113608aa9ec82f6b10b42cb

SHA512
2856fc49b526eea86ca118727e50a2f9b4559c3dd976aad34deeae71485d9a942fb722458e7d4f6277b35f7ab0bb074a1aa1421af568d2100218fe6ae070ec4e

Download Submit
memory/5036-18-0x0000000002140000-0x0000000002146000-memory.dmp

Filesize
24KB

Download
memory/5112-0-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/5112-1-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/5112-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/5112-26-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download