4abd3cd8adba74f2452a767d30b33f84e5caf144d86b1df972d640668f37993a

Analysis

max time kernel
136s
max time network
134s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
04/06/2024, 21:53

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General

Target

2024-06-04_fcfaf6743126f37a04d25ca4b2f8d16c_cryptolocker.exe
Size

39KB
MD5

fcfaf6743126f37a04d25ca4b2f8d16c
SHA1

d1941a165fd1f59c1ed8d99cd8387ac8fa91e1bc
SHA256

4abd3cd8adba74f2452a767d30b33f84e5caf144d86b1df972d640668f37993a
SHA512

e79e7c19f22619c1728678993b326aff9a236e24af126c5fa663e5c2d4e0495e647d604a304e05f9fe008f2598229558b4d8ccef7e9996596da8887ade301d7d
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGp/YIm7wm0WZy6:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xw

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000235d8-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000235d8-12.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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	2024-06-04_fcfaf6743126f37a04d25ca4b2f8d16c_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
516	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 4672 wrote to memory of 516	4672	2024-06-04_fcfaf6743126f37a04d25ca4b2f8d16c_cryptolocker.exe	90
PID 4672 wrote to memory of 516	4672	2024-06-04_fcfaf6743126f37a04d25ca4b2f8d16c_cryptolocker.exe	90
PID 4672 wrote to memory of 516	4672	2024-06-04_fcfaf6743126f37a04d25ca4b2f8d16c_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-06-04_fcfaf6743126f37a04d25ca4b2f8d16c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-04_fcfaf6743126f37a04d25ca4b2f8d16c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4672
- 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:516

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 --field-trial-handle=4552,i,14486271492189381216,15799931579469722648,262144 --variations-seed-version --mojo-platform-channel-handle=3284 /prefetch:8
1⤵
PID:1476

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
39KB

MD5
c216f00d44095e019b6d8a63c2d6ce53

SHA1
3a5745f6fae9a9b4eecca98b3a810db619b0ea08

SHA256
29a39a18602e5eac97a8dfb1c9ba76256c3e35f2709971cd46dae0b51c9d314c

SHA512
dfef0c7cc411c39b1cd01dcb1b9a24e43b37fd1b9a546bfa06bb6b1ed057947e298d80de799f13650fc9b6168347a73be7d19a0402a2d217370afe63b6331927

Download Submit
memory/516-25-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/4672-0-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/4672-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4672-1-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download