34c8bb519aa551ad6e4ce65ca8ce52a0e63c3257486d66c1d464fcfb6ea24be6

Analysis

max time kernel
144s
max time network
159s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
20/04/2024, 11:25

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General

Target

2024-04-20_722ef3939a0262c9b3b1b933d536c086_cryptolocker.exe
Size

63KB
MD5

722ef3939a0262c9b3b1b933d536c086
SHA1

d725dd80dc24b63401eb1ed39e2c029d26b90e0a
SHA256

34c8bb519aa551ad6e4ce65ca8ce52a0e63c3257486d66c1d464fcfb6ea24be6
SHA512

0b2f0e8946b8aa0f3c1663462f15c501febcf522bd30a8f1489f15fcf873c795d0a3c2efa70865641f3ca69a0a9aabcaba4776a59ca7db356d23998357b6a6ec
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF29984Z:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7V

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002325a-14.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002325a-14.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	2024-04-20_722ef3939a0262c9b3b1b933d536c086_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
5000	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 1304 wrote to memory of 5000	1304	2024-04-20_722ef3939a0262c9b3b1b933d536c086_cryptolocker.exe	92
PID 1304 wrote to memory of 5000	1304	2024-04-20_722ef3939a0262c9b3b1b933d536c086_cryptolocker.exe	92
PID 1304 wrote to memory of 5000	1304	2024-04-20_722ef3939a0262c9b3b1b933d536c086_cryptolocker.exe	92

C:\Users\Admin\AppData\Local\Temp\2024-04-20_722ef3939a0262c9b3b1b933d536c086_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-20_722ef3939a0262c9b3b1b933d536c086_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1304
- 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:5000

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=4036 --field-trial-handle=2676,i,447940133669489189,1353734109898858672,262144 --variations-seed-version /prefetch:8
1⤵
PID:3324

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
187833a698ad252ed3b1f513cdb0fa90

SHA1
a7e3a390c65922ce5da221ef6a0c6f7131e3cc1d

SHA256
1252339e9f74ba98a87a2debb8eb4c09ca730e14f55a54beeb429b33b0be7cb1

SHA512
a761c13318b994223e7d6e2012b9ab8cbba9be5eaca39d88aaa4e6a270d8ff7e4f32e33a66d791c9a0e12e60b51ca00aabb5facb49ae089f761387ddd4829bf2

Download Submit
memory/1304-0-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/1304-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/1304-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/5000-19-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download