5bf28eb4450a8dd3f859296d5aeca2645380baa76420cf1b653f71f69d611df5

Analysis

max time kernel
142s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28-02-2024 04:59

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General

Target

2024-02-28_68d6f7bb55a5fb0e3243998c71f248e8_cryptolocker.exe
Size

63KB
MD5

68d6f7bb55a5fb0e3243998c71f248e8
SHA1

7948a764156e98bb3fdeec277aa940fe4089e64b
SHA256

5bf28eb4450a8dd3f859296d5aeca2645380baa76420cf1b653f71f69d611df5
SHA512

d359772e4669caf9eda108a298b9e7ae1eb8b761477bed47e04a580effc8121cb460665f0855c3e3b5874ed24c308344f1c05372789ec7fa6e5b54a89949e3a9
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x/9lfL+gniDScG/:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7m

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002325d-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002325d-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	2024-02-28_68d6f7bb55a5fb0e3243998c71f248e8_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
2188	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 3372 wrote to memory of 2188	3372	2024-02-28_68d6f7bb55a5fb0e3243998c71f248e8_cryptolocker.exe	96
PID 3372 wrote to memory of 2188	3372	2024-02-28_68d6f7bb55a5fb0e3243998c71f248e8_cryptolocker.exe	96
PID 3372 wrote to memory of 2188	3372	2024-02-28_68d6f7bb55a5fb0e3243998c71f248e8_cryptolocker.exe	96

C:\Users\Admin\AppData\Local\Temp\2024-02-28_68d6f7bb55a5fb0e3243998c71f248e8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_68d6f7bb55a5fb0e3243998c71f248e8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3372
- 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:2188

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=1392 --field-trial-handle=3060,i,1774866140584649235,8085848018931772189,262144 --variations-seed-version /prefetch:8
1⤵
PID:1568

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
63KB

MD5
f984d345a2228a37485259112dfe17d7

SHA1
390d5869c9aae8598f8c2919bcb46faaa1fdd17d

SHA256
aef8ad8c06c8577ee5a86549d628bcc8e23637839bbaf7152f65ada42a061d61

SHA512
ac2cd30298ecb409515409ab73f091e9d1c7b70a0fec7fed529165dd29dfaf6adde601a8b158ec3c7196f6b5fad27a27f39c91d9f1f9e168e642ecd1e88043ad

Download Submit
memory/2188-17-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/3372-0-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/3372-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/3372-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download