e0e1f6709ef015ef80f0e1bef8c84e725c6220d0c91940386e82399b2dd58a16

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
10/05/2024, 01:16

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General

Target

2024-05-10_b2b681a0e8fc75c7688535e7cb0350d5_cryptolocker.exe
Size

40KB
MD5

b2b681a0e8fc75c7688535e7cb0350d5
SHA1

596be828ae84fed065c1d493fc07317d4e193f91
SHA256

e0e1f6709ef015ef80f0e1bef8c84e725c6220d0c91940386e82399b2dd58a16
SHA512

f1f85b862a95ef9109bcf0d29563d49aa0c01b667e6dd0d02266ba0fffc277711730153ac3f4ae9a3c4a39303dc6330742113891b80e49b8d7c654993768b75a
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLam5axRVZoW:V6QFElP6n+gMQMOtEvwDpjyaYaLt

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002327d-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002327d-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-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	2024-05-10_b2b681a0e8fc75c7688535e7cb0350d5_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2516	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 1772 wrote to memory of 2516	1772	2024-05-10_b2b681a0e8fc75c7688535e7cb0350d5_cryptolocker.exe	82
PID 1772 wrote to memory of 2516	1772	2024-05-10_b2b681a0e8fc75c7688535e7cb0350d5_cryptolocker.exe	82
PID 1772 wrote to memory of 2516	1772	2024-05-10_b2b681a0e8fc75c7688535e7cb0350d5_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-10_b2b681a0e8fc75c7688535e7cb0350d5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-10_b2b681a0e8fc75c7688535e7cb0350d5_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1772
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2516

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
40KB

MD5
2ae1c4094a6af78086bc89e92c92cb8c

SHA1
53b637defba4485605e8014223f7d2cee692871c

SHA256
301ee263e74ece5c91844fd10d0529b1debfae84d086f700e37514f7bfc32099

SHA512
b4ddc09d9d7a0d613f35974a2f8c2741883e02c161e08c49da4da9bf8ac436c0db254fc68fbc443b79be2460f57019caea65126b498839ff30a910b3a74767bd

Download Submit
memory/1772-0-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/1772-1-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/1772-8-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/2516-23-0x0000000000530000-0x0000000000536000-memory.dmp

Filesize
24KB

Download
memory/2516-17-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download