19ccba4faec92b1a0c9333aebad7afe1e0908ce29d1eecd557e132a5e85b1dc4

Analysis

max time kernel
148s
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
16/03/2024, 04:50

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General

Target

2024-03-16_e7463a0e65e5dd8c5d6fef4242e8d6e6_cryptolocker.exe
Size

43KB
MD5

e7463a0e65e5dd8c5d6fef4242e8d6e6
SHA1

7669e9582caa3461a9bbd94a02bb73a05eb0bf88
SHA256

19ccba4faec92b1a0c9333aebad7afe1e0908ce29d1eecd557e132a5e85b1dc4
SHA512

13bf8507c8dc388d4ff97caea780433988876ed99c1753fc79b37b5ceb31a91d48e573fbd1630604377003d64939b5d64fedff9e8289fc24bf61fae340699a48
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3Kx+:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xj

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023245-13.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023245-13.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	2024-03-16_e7463a0e65e5dd8c5d6fef4242e8d6e6_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
3620	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 4740 wrote to memory of 3620	4740	2024-03-16_e7463a0e65e5dd8c5d6fef4242e8d6e6_cryptolocker.exe	100
PID 4740 wrote to memory of 3620	4740	2024-03-16_e7463a0e65e5dd8c5d6fef4242e8d6e6_cryptolocker.exe	100
PID 4740 wrote to memory of 3620	4740	2024-03-16_e7463a0e65e5dd8c5d6fef4242e8d6e6_cryptolocker.exe	100

C:\Users\Admin\AppData\Local\Temp\2024-03-16_e7463a0e65e5dd8c5d6fef4242e8d6e6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-16_e7463a0e65e5dd8c5d6fef4242e8d6e6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4740
- 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:3620

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=3536 --field-trial-handle=2304,i,6987730730348465820,3913273227385401271,262144 --variations-seed-version /prefetch:8
1⤵
PID:660

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
43KB

MD5
495ae814484d8d9efa2e73a2f4f95e8d

SHA1
3246c9724531c066bb9bbb3042edcf8d880a9e66

SHA256
1d22c5f9d35a2911ff528672f90fc891795b9a0ae13ca5eb15f00b403d8d5a67

SHA512
eb61b9545539b4c540ae1a13135bcca1902958a78c5f52f3803d2adefeb31cb9538b644d4ae73b7c655152f15ece0d1105528388c8d443e5218a829916dd9f8e

Download Submit
memory/3620-20-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/4740-0-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/4740-1-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/4740-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download