82f8610672240cd354fea695bac11e3099945f84b78339764c0959b92a3c519a

Analysis

max time kernel
138s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
15/04/2024, 10:17

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-04-15_dcc5a3ed41b5b7a9b1c865e8d08d3355_cryptolocker.exe
Size

63KB
MD5

dcc5a3ed41b5b7a9b1c865e8d08d3355
SHA1

adf735561923fb3abc30f5b8531ed16a48b56a73
SHA256

82f8610672240cd354fea695bac11e3099945f84b78339764c0959b92a3c519a
SHA512

d61c8a3844ee5bb68360d192e62c48a02e943292849e9959f3e6eceaae80e9c036b34b411d85f65ac078ba52151ca0614277a29adad3cf30a5bc530c6b9943da
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF2998:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7k

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000002324b-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000002324b-12.dat	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-04-15_dcc5a3ed41b5b7a9b1c865e8d08d3355_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

pid	Process
4128	hurok.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 3152 wrote to memory of 4128	3152	2024-04-15_dcc5a3ed41b5b7a9b1c865e8d08d3355_cryptolocker.exe	92
PID 3152 wrote to memory of 4128	3152	2024-04-15_dcc5a3ed41b5b7a9b1c865e8d08d3355_cryptolocker.exe	92
PID 3152 wrote to memory of 4128	3152	2024-04-15_dcc5a3ed41b5b7a9b1c865e8d08d3355_cryptolocker.exe	92

C:\Users\Admin\AppData\Local\Temp\2024-04-15_dcc5a3ed41b5b7a9b1c865e8d08d3355_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-15_dcc5a3ed41b5b7a9b1c865e8d08d3355_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3152
- 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:4128

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=3180 --field-trial-handle=2276,i,11674642242468042059,14711253743544118298,262144 --variations-seed-version /prefetch:8
1⤵
PID:1260

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
64KB

MD5
e3579dc5408d7288d38514b4c8b100de

SHA1
669bd149f7a6cced8bb48a8cf206240e03e9e9b0

SHA256
a8a9dcd99c2ebbe04103a11476a8e6db99ee201ad4759c901d9d9d60c79250be

SHA512
f6759914957cbb3e44548aa072c718c4757ef6e566a7165f8ec1d148ea20aa1867d11c438b9d7da417fd360013d02d24e48aabd0b40c30d4a81b1f1287db4340

Download Submit
memory/3152-0-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/3152-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/3152-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4128-17-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download