c027e457e94d94dc81156e7658ec06c11f1c19ba61de2292f7c13ca01f361e96

Analysis

max time kernel
142s
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
22/04/2024, 12:32

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General

Target

2024-04-22_201825187b95b4ea11ed0f4a45efff3e_cryptolocker.exe
Size

63KB
MD5

201825187b95b4ea11ed0f4a45efff3e
SHA1

5d98f236a0754b7fe26fe76373dac41b5e1e10da
SHA256

c027e457e94d94dc81156e7658ec06c11f1c19ba61de2292f7c13ca01f361e96
SHA512

0de141240c31b92f65066ccc6d7a9bcdf65bb1cdaf705beeb847da7d68d61b5e1823f96baf28d31117075fbcb0df1b91ff6b55947e65b2add3dc601277e769d2
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293Ci9:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7P

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023255-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023255-12.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	2024-04-22_201825187b95b4ea11ed0f4a45efff3e_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
312	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 4900 wrote to memory of 312	4900	2024-04-22_201825187b95b4ea11ed0f4a45efff3e_cryptolocker.exe	90
PID 4900 wrote to memory of 312	4900	2024-04-22_201825187b95b4ea11ed0f4a45efff3e_cryptolocker.exe	90
PID 4900 wrote to memory of 312	4900	2024-04-22_201825187b95b4ea11ed0f4a45efff3e_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-04-22_201825187b95b4ea11ed0f4a45efff3e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-22_201825187b95b4ea11ed0f4a45efff3e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4900
- 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:312

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=1312 --field-trial-handle=2284,i,9807419199535700662,2319175108930815708,262144 --variations-seed-version /prefetch:8
1⤵
PID:3620

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
64KB

MD5
de0fde19e700f143273416a6690baf95

SHA1
478e819556ab290ded3e349eaaa1198ffba1ad54

SHA256
d9a963f65f936631e2114c1b070f36c5f4610f4a97da45ffcfc4080e842705fc

SHA512
fd168349b246f0cd7911f9af0583b4d81451bab5693f46e837bc9cdadbb091630eb858919a5e3f9619766f51c0ad3735310c427b74567c76567158018f156f4e

Download Submit
memory/312-23-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/4900-0-0x0000000002200000-0x0000000002206000-memory.dmp

Filesize
24KB

Download
memory/4900-1-0x0000000002200000-0x0000000002206000-memory.dmp

Filesize
24KB

Download
memory/4900-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download