dbaa51be35c8b96d64996ff284c2ce2491909e888982f621bb0cb9d465e08e8e

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
27/04/2024, 08:42

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General

Target

2024-04-27_641dbed814788b638a80c3559adea02b_cryptolocker.exe
Size

50KB
MD5

641dbed814788b638a80c3559adea02b
SHA1

0834786a404126912fe672bea51ed9e1fba50599
SHA256

dbaa51be35c8b96d64996ff284c2ce2491909e888982f621bb0cb9d465e08e8e
SHA512

681180c1422c0c7fe316ff5a05a67a5f29167d5b9aaaa1276ef882ff2a8841d03681e255e8018aa871c561684b33fd4624b58fdc4be88d0c2748add3ffdb2c3f
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIx:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7e

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023b51-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023b51-12.dat	CryptoLocker_set1

Checks computer location settings 2 TTPs 1 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-1-5-21-17203666-93769886-2545153620-1000\Control Panel\International\Geo\Nation	2024-04-27_641dbed814788b638a80c3559adea02b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3536	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 4264 wrote to memory of 3536	4264	2024-04-27_641dbed814788b638a80c3559adea02b_cryptolocker.exe	83
PID 4264 wrote to memory of 3536	4264	2024-04-27_641dbed814788b638a80c3559adea02b_cryptolocker.exe	83
PID 4264 wrote to memory of 3536	4264	2024-04-27_641dbed814788b638a80c3559adea02b_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-04-27_641dbed814788b638a80c3559adea02b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-27_641dbed814788b638a80c3559adea02b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4264
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Executes dropped EXE
  PID:3536

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
51KB

MD5
8c803322229190ae397ea1a565a8ff9e

SHA1
e7bf33346ca2c899d49772113974957ea37ba117

SHA256
12511e75dbb6d1448198d2cd68f30acf71e9a96c3a427941ab7be8d3f68b4aab

SHA512
5592ec85afc812ab918a3c7bf4c3cc09fef092e07c776c902fdd217a19cab08990a9979b1ebfd069471dbb293f173e315c6e2a9d8fa478f1428f2f828679173b

Download Submit
memory/3536-25-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/4264-0-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/4264-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4264-7-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download