5bfe96b4d92d43c7d3b01c460f8dff113222175f64aefae2e1463bdae7ba388e

Analysis

max time kernel
138s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18/02/2024, 20:23

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General

Target

2024-02-18_06a99a76f97a40e87ecf2317f2d33af5_cryptolocker.exe
Size

44KB
MD5

06a99a76f97a40e87ecf2317f2d33af5
SHA1

a23ac1391fda6984d592c5d839ff14c43ea027df
SHA256

5bfe96b4d92d43c7d3b01c460f8dff113222175f64aefae2e1463bdae7ba388e
SHA512

1bf97be23222a8f01ca2d15f1f35a10a921598987ed97eaf4fbdeec26dea66e67cc316cff54b71b8715f6c02b28eb5bccd6371e7569a3bf9b12159ac420e9993
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3KxU:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XV

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023137-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023137-12.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	2024-02-18_06a99a76f97a40e87ecf2317f2d33af5_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
2116	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 4528 wrote to memory of 2116	4528	2024-02-18_06a99a76f97a40e87ecf2317f2d33af5_cryptolocker.exe	84
PID 4528 wrote to memory of 2116	4528	2024-02-18_06a99a76f97a40e87ecf2317f2d33af5_cryptolocker.exe	84
PID 4528 wrote to memory of 2116	4528	2024-02-18_06a99a76f97a40e87ecf2317f2d33af5_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-18_06a99a76f97a40e87ecf2317f2d33af5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_06a99a76f97a40e87ecf2317f2d33af5_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4528
- 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:2116

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
44KB

MD5
77680241ef0b5cde44047daa2c40e31e

SHA1
be19c64335cdd4c36130c346477f426369f785e6

SHA256
f2f9f28eb1f148a90e39f5127efa89449e769787dc6d5417d10a29c2263668f6

SHA512
a0e523457f906ccdd389ea6ff3f1bd39bfa2b34e246abd70516ae983e15e04cdfdefc40e19ea7f4f53e473634fcffe693f2bd46c4e29e80d9c463cd09c9a04c3

Download Submit
memory/2116-25-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4528-0-0x0000000000450000-0x0000000000456000-memory.dmp

Filesize
24KB

Download
memory/4528-1-0x0000000000450000-0x0000000000456000-memory.dmp

Filesize
24KB

Download
memory/4528-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download