3ca51097ad34532c16b12f3866cc889b4936108ff04287d6f22f918e49d1636b

Analysis

max time kernel
151s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
25/03/2024, 11:49

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General

Target

2024-03-25_c1a97979e2e8fdfd5c6f703a853bcc15_cryptolocker.exe
Size

45KB
MD5

c1a97979e2e8fdfd5c6f703a853bcc15
SHA1

b1701d9724d50b4f10532bad70cc0f9f992b5493
SHA256

3ca51097ad34532c16b12f3866cc889b4936108ff04287d6f22f918e49d1636b
SHA512

da7708bbb9010e3e68be647c7987f760a7712b938a285e772632a101792f112f620286ab3dbab99fdf47130b1ac429b7f50a620985d466998507ba999ee266a4
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3Kxr:o1KhxqwtdgI2MyzNORQtOflIwoHNV2X+

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023261-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023261-12.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	2024-03-25_c1a97979e2e8fdfd5c6f703a853bcc15_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
4628	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 1104 wrote to memory of 4628	1104	2024-03-25_c1a97979e2e8fdfd5c6f703a853bcc15_cryptolocker.exe	100
PID 1104 wrote to memory of 4628	1104	2024-03-25_c1a97979e2e8fdfd5c6f703a853bcc15_cryptolocker.exe	100
PID 1104 wrote to memory of 4628	1104	2024-03-25_c1a97979e2e8fdfd5c6f703a853bcc15_cryptolocker.exe	100

C:\Users\Admin\AppData\Local\Temp\2024-03-25_c1a97979e2e8fdfd5c6f703a853bcc15_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-25_c1a97979e2e8fdfd5c6f703a853bcc15_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1104
- 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:4628

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=4104 --field-trial-handle=2280,i,11703952675008463361,17436195144517971517,262144 --variations-seed-version /prefetch:8
1⤵
PID:2416

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
45KB

MD5
ee46e26394fc3807759af248f23fe275

SHA1
aff732ed1079ceeb2a2470851afbc25bcc607112

SHA256
3c99ccfbd9adcb4f19749fb6d2731736b31d4194218457ba90d9391984a04149

SHA512
5e7bf68320720f3368cf71c7d4a1cc1a713d1722e3ad1f58b98f5685c0e77ef35b169bdf15c98fb8b2e5d287f95448fa9923cc91bf1829b7b56ee02867b3cc65

Download Submit
memory/1104-0-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/1104-1-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/1104-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4628-24-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download