11e640d2964de9429f45e2d9e0df6bb542af42eed8c91b97e8e57c6ecc48c34b

Analysis

max time kernel
92s
max time network
116s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
24/02/2024, 07:45

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General

Target

2024-02-24_ea5df75e26e4009ac2dea79df15e60e3_cryptolocker.exe
Size

63KB
MD5

ea5df75e26e4009ac2dea79df15e60e3
SHA1

e5ed3557f6990f4a410c5f0c9a5927c57f11770a
SHA256

11e640d2964de9429f45e2d9e0df6bb542af42eed8c91b97e8e57c6ecc48c34b
SHA512

76a5dd551b97afb3e79041b6c901768572c56c17210a48b12be2f2f41a6368ec9f774d85d5711ce2d64079ee97b68fbfe5d6ae574ae346b802593483043b53af
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x/9lfL+gniDSZp3:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7S

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001fc40-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001fc40-12.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-1-5-21-3316742141-2240921845-2885234760-1000\Control Panel\International\Geo\Nation	2024-02-24_ea5df75e26e4009ac2dea79df15e60e3_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3316742141-2240921845-2885234760-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
3312	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 1564 wrote to memory of 3312	1564	2024-02-24_ea5df75e26e4009ac2dea79df15e60e3_cryptolocker.exe	88
PID 1564 wrote to memory of 3312	1564	2024-02-24_ea5df75e26e4009ac2dea79df15e60e3_cryptolocker.exe	88
PID 1564 wrote to memory of 3312	1564	2024-02-24_ea5df75e26e4009ac2dea79df15e60e3_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-02-24_ea5df75e26e4009ac2dea79df15e60e3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-24_ea5df75e26e4009ac2dea79df15e60e3_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1564
- 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:3312

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
63KB

MD5
4bcb8b9095ccda0c990f158ba68e96d4

SHA1
249e400a78625a57f5454b8b0f187fd3d16ec80b

SHA256
f2e60162cb5d181b96fe0ee57a6d830087bbba3254a88eeed72ef405e2cfc1ae

SHA512
170d96bfef2f607de47d3749e5e7246753ed5b61e81e35303cff67f1e85c9d3d0d87ee6775bcc5f5b31bb36285638400fc3ae6cb31460c44f61e52b13b04ac5d

Download Submit
memory/1564-0-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/1564-1-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/1564-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3312-25-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download