85eea9832d2a51ca7f61281a314513f02c480b2899e2d5175423f406194c1966

Analysis

max time kernel
150s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
26-04-2024 04:40

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General

Target

2024-04-26_53beed9d784873523149925133309086_cryptolocker.exe
Size

64KB
MD5

53beed9d784873523149925133309086
SHA1

de92aaa68cf1e8cb9c5ec7b100a46a0a2f647c1e
SHA256

85eea9832d2a51ca7f61281a314513f02c480b2899e2d5175423f406194c1966
SHA512

4657a0df3a0d2ead7137e428cc370438b06fd022c43c1b7ff7e5358329c08a95e6b4410f419d2bc6ef227a202b0fc06352fa191e2581503e67f2b05b6fbd284d
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x/9lfL+gniDScGo:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7l

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e97c-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e97c-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-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation	hurok.exe
Key value queried	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation	2024-04-26_53beed9d784873523149925133309086_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4764	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 3440 wrote to memory of 4764	3440	2024-04-26_53beed9d784873523149925133309086_cryptolocker.exe	87
PID 3440 wrote to memory of 4764	3440	2024-04-26_53beed9d784873523149925133309086_cryptolocker.exe	87
PID 3440 wrote to memory of 4764	3440	2024-04-26_53beed9d784873523149925133309086_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-04-26_53beed9d784873523149925133309086_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-26_53beed9d784873523149925133309086_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3440
- 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:4764

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
64KB

MD5
f4985172cdd6daea2f280fc4a8f82e53

SHA1
f4815febf0da9b924fb4a6754ad6bbff16715478

SHA256
d3e3bf18e833edd0120fcc526e338845ec633b9f5a1cd0b822b8de26fb7063e3

SHA512
79486a7723e582cd2c6adc6bc9272571792e8118d611c61a6ad786ff74d279f7e418a9f6fc668291597780399327da43876379aebcac1619079b50aeb4cb12ae

Download Submit
memory/3440-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3440-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3440-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4764-20-0x0000000001F40000-0x0000000001F46000-memory.dmp

Filesize
24KB

Download