c559291d004110ee47376601362a934e61892dc3d64147dcae11161323944737

Analysis

max time kernel
143s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
21-02-2024 15:26

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General

Target

2024-02-21_34bfdb72357d118c1b43c1a72d8a7c87_cryptolocker.exe
Size

82KB
MD5

34bfdb72357d118c1b43c1a72d8a7c87
SHA1

ef57714b130de255b34dd0c8b2329685268d1b2c
SHA256

c559291d004110ee47376601362a934e61892dc3d64147dcae11161323944737
SHA512

f72a128b27e77d03ea095f2e896b6cb0f25559de98192975b892f61093574080bd4e0b8fa66bb04c61c2307a8f9afe4a0dd644d08664035af254ed65e5eee070
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLa5VccPtNw5CS95yFPnM:V6QFElP6n+gMQMOtEvwDpjyaLccVNlW

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002310b-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002310b-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-1-5-21-3844919115-497234255-166257750-1000\Control Panel\International\Geo\Nation	2024-02-21_34bfdb72357d118c1b43c1a72d8a7c87_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2228	asih.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 4932 wrote to memory of 2228	4932	2024-02-21_34bfdb72357d118c1b43c1a72d8a7c87_cryptolocker.exe	80
PID 4932 wrote to memory of 2228	4932	2024-02-21_34bfdb72357d118c1b43c1a72d8a7c87_cryptolocker.exe	80
PID 4932 wrote to memory of 2228	4932	2024-02-21_34bfdb72357d118c1b43c1a72d8a7c87_cryptolocker.exe	80

C:\Users\Admin\AppData\Local\Temp\2024-02-21_34bfdb72357d118c1b43c1a72d8a7c87_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-21_34bfdb72357d118c1b43c1a72d8a7c87_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4932
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2228

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\asih.exe

Filesize
82KB

MD5
8f24b38a54d440d82f7ac843e6d4416a

SHA1
7c7336ede900d6f807d24a24eb7fbeae588f1bdc

SHA256
32cf1d6ad9922de1bbd615784446a5a9ed2d47f79076d7ed0230cdcd8bf9371e

SHA512
5398761fdd3dad34debdd636879c236f8a6b5be8f83b5960f456e9732e8eb875c96c76eb258766f1ae4535406d1f40954bfdae53164bca2fda29daeaf39a9976

Download Submit
memory/2228-17-0x0000000000650000-0x0000000000656000-memory.dmp

Filesize
24KB

Download
memory/2228-18-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/4932-0-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/4932-1-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/4932-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download