eee98ca3e56521e8ca73fd0fa633fcf4b93175b2668e571b3beb928de4f011a3

Analysis

max time kernel
150s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240319-en
resource tags

arch:x64arch:x86image:win10v2004-20240319-enlocale:en-usos:windows10-2004-x64system
submitted
27/03/2024, 20:23

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General

Target

2024-03-27_0375fb44b3a04116378f814c22291221_cryptolocker.exe
Size

33KB
MD5

0375fb44b3a04116378f814c22291221
SHA1

41aa24e79c46883683aa705671bd3998c372da28
SHA256

eee98ca3e56521e8ca73fd0fa633fcf4b93175b2668e571b3beb928de4f011a3
SHA512

2c701bb5135884fce58a8c812f9589e96a084b83823f6b4062415d89b80076286454bc16be75efe4b67efcea6d4e4bfe627e3731ab32adb682a51785fd7aee3c
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGp/YIm7wm39bj:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xy

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023351-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023351-12.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-1-5-21-817259280-2658881748-983986378-1000\Control Panel\International\Geo\Nation	2024-03-27_0375fb44b3a04116378f814c22291221_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-817259280-2658881748-983986378-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
2984	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 4124 wrote to memory of 2984	4124	2024-03-27_0375fb44b3a04116378f814c22291221_cryptolocker.exe	96
PID 4124 wrote to memory of 2984	4124	2024-03-27_0375fb44b3a04116378f814c22291221_cryptolocker.exe	96
PID 4124 wrote to memory of 2984	4124	2024-03-27_0375fb44b3a04116378f814c22291221_cryptolocker.exe	96

C:\Users\Admin\AppData\Local\Temp\2024-03-27_0375fb44b3a04116378f814c22291221_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-27_0375fb44b3a04116378f814c22291221_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4124
- 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:2984

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=3376 --field-trial-handle=2148,i,1752153415760610784,11376271161549019716,262144 --variations-seed-version /prefetch:8
1⤵
PID:2940

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\hurok.exe

Filesize
34KB

MD5
a31db5e2d741ae264f8cfbf2ac85cdd9

SHA1
75c5a5ff89e0b8ae6f94c3f68b725fd6fc093def

SHA256
9dc3d0d3267fdb7286624363c956277ac5a6df68b45d3cb3aac7b50e524929f3

SHA512
85d06169b98ba3e144d9c3430423e2d01a6d7388c5076f5dc6615104268b2d18e4f54ad9322c7fc79fb41bab99484507c9defd955a088e69a397ce5f404d055b

Download Submit
memory/2984-20-0x0000000000550000-0x0000000000556000-memory.dmp

Filesize
24KB

Download
memory/4124-0-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4124-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4124-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download