725e6c42e96b4e79bd519d277e0e196e4015357abe90211efb0510adc6402032

Analysis

max time kernel
150s
max time network
151s
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, 11:58

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General

Target

2024-02-18_bc449736885ca23802fbfebec9cfd4ca_cryptolocker.exe
Size

69KB
MD5

bc449736885ca23802fbfebec9cfd4ca
SHA1

91227b65428867e908b9223b8c401f41025169d1
SHA256

725e6c42e96b4e79bd519d277e0e196e4015357abe90211efb0510adc6402032
SHA512

9cea6de6789407ddaa1cc70fb6a5033134b13cd0d949cf08ee2715a24de03e208be0f8d3e0311d40b78b24d1e90175821b322b18bd09f809a84ec30f8acd84b7
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUYB:DW60sllyWOtEvwDpjwF85O

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/64-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0009000000023129-13.dat	CryptoLocker_rule2
behavioral2/memory/64-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/64-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0009000000023129-13.dat	CryptoLocker_set1
behavioral2/memory/64-17-0x0000000000500000-0x000000000050B000-memory.dmp	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-1-5-21-2398549320-3657759451-817663969-1000\Control Panel\International\Geo\Nation	2024-02-18_bc449736885ca23802fbfebec9cfd4ca_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4064	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 64 wrote to memory of 4064	64	2024-02-18_bc449736885ca23802fbfebec9cfd4ca_cryptolocker.exe	86
PID 64 wrote to memory of 4064	64	2024-02-18_bc449736885ca23802fbfebec9cfd4ca_cryptolocker.exe	86
PID 64 wrote to memory of 4064	64	2024-02-18_bc449736885ca23802fbfebec9cfd4ca_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-02-18_bc449736885ca23802fbfebec9cfd4ca_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_bc449736885ca23802fbfebec9cfd4ca_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:64
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4064

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
69KB

MD5
8fac56d99e1cec2df668d0985dd90071

SHA1
9cc58cdfe5cb59c9fa85e8555dc90db40898396c

SHA256
6fe38b12a4a283f8b0f36ded97ff1ffc3fa755a73548f480e2b65686d44227fb

SHA512
8d4d2c366ebb5898709de18c9b253976eac5168804a36955f246e7196857ab65321cc855a095727defd90074897f13632444dea2b9013545c2c0095b2a2ceec0

Download Submit
memory/64-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/64-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/64-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/64-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/64-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download