0966d1d90f52a1f45cb942233720bfa1850fc4bcf0957dd102cf2ab27e1137e9

Analysis

max time kernel
143s
max time network
150s
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 09:25

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General

Target

2024-02-28_15a43bba0f3056953f6878cfd1c99218_cryptolocker.exe
Size

43KB
MD5

15a43bba0f3056953f6878cfd1c99218
SHA1

29c29a060feacb949232ff11889360a602048fd9
SHA256

0966d1d90f52a1f45cb942233720bfa1850fc4bcf0957dd102cf2ab27e1137e9
SHA512

10e27c40a35c2dbcacc0f8721b6404f7be3a490a65b03c6e4e87b64974104a5769fa475c491f671358f6b554e42bc645b367acbdce947f991b54da7b40566bc5
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3Kxx:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xo

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002325b-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002325b-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_15a43bba0f3056953f6878cfd1c99218_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
4224	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 3328 wrote to memory of 4224	3328	2024-02-28_15a43bba0f3056953f6878cfd1c99218_cryptolocker.exe	98
PID 3328 wrote to memory of 4224	3328	2024-02-28_15a43bba0f3056953f6878cfd1c99218_cryptolocker.exe	98
PID 3328 wrote to memory of 4224	3328	2024-02-28_15a43bba0f3056953f6878cfd1c99218_cryptolocker.exe	98

C:\Users\Admin\AppData\Local\Temp\2024-02-28_15a43bba0f3056953f6878cfd1c99218_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_15a43bba0f3056953f6878cfd1c99218_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3328
- 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:4224

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=2824 --field-trial-handle=2236,i,5367110156796017614,12594004256180761011,262144 --variations-seed-version /prefetch:8
1⤵
PID:3576

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
2ed19960718c0d5577bbfdfbb7d9e5df

SHA1
ab9c38f5b197d4a187d20e97c1a3016fcf242e3e

SHA256
cd38b71db4b6857dfb1478bcf54805c23b49822ea5417eb7c338016b0adae061

SHA512
34529253a0e26511c6921fd42ba315f999bbdf513d3bd4a19b4e83a35f62ad14bea79bb207c712641bf1e14947ae717e552d90851700a343e0a2e57a4e60bdec

Download Submit
memory/3328-0-0x0000000000760000-0x0000000000766000-memory.dmp

Filesize
24KB

Download
memory/3328-1-0x0000000000760000-0x0000000000766000-memory.dmp

Filesize
24KB

Download
memory/3328-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4224-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download