8fdb6ccafc3134a3b16a3cb294f8095c233385f67705a0f036993cf5498fa72f

Analysis

max time kernel
83s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
20/02/2024, 11:33

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General

Target

2024-02-20_5ad232ed38970f40032e835980a99210_cryptolocker.exe
Size

45KB
MD5

5ad232ed38970f40032e835980a99210
SHA1

c3d8c2f6acc380070302c565b6bed7f6ddbfff08
SHA256

8fdb6ccafc3134a3b16a3cb294f8095c233385f67705a0f036993cf5498fa72f
SHA512

566c938159fce5012f76b332c6e2099d08fe2db43ac9681bf1f25af219dc72348edcb605c4950f3e5281854d55e3232c60ce70a7879e34d4c0bca587f3b0bee2
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3KxD:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xm

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002310b-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002310b-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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-02-20_5ad232ed38970f40032e835980a99210_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
544	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 3380 wrote to memory of 544	3380	2024-02-20_5ad232ed38970f40032e835980a99210_cryptolocker.exe	82
PID 3380 wrote to memory of 544	3380	2024-02-20_5ad232ed38970f40032e835980a99210_cryptolocker.exe	82
PID 3380 wrote to memory of 544	3380	2024-02-20_5ad232ed38970f40032e835980a99210_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-02-20_5ad232ed38970f40032e835980a99210_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-20_5ad232ed38970f40032e835980a99210_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3380
- 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:544

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
494e5af9a74885eeb1a925e08c3ee540

SHA1
87f0926b580cf6b029893809bd6e54936af1a095

SHA256
9192f752c9bf6e6d3c48861a927a9280d72ca494198b00993a6d15b010454c46

SHA512
0d664b376c3d8ff2e2b49b3fb52fb37ee42fc1a47f0867110089d1fa5da3fb99eda4a781cc98004bb73cee8eb41eb94d5222eaf6d162153da81e656adde5a016

Download Submit
memory/544-17-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/3380-0-0x0000000002270000-0x0000000002276000-memory.dmp

Filesize
24KB

Download
memory/3380-1-0x0000000002270000-0x0000000002276000-memory.dmp

Filesize
24KB

Download
memory/3380-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download