9165e8d73ca0704efe1a9c80b817751009e8a021a7c3ee53e770709761e2f2b2

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
08/03/2024, 13:03

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General

Target

2024-03-08_0400d82d63e7474ce26b21fb2ec9d5ed_cryptolocker.exe
Size

122KB
MD5

0400d82d63e7474ce26b21fb2ec9d5ed
SHA1

03c3701b5340321ff17523579ffc2df954423687
SHA256

9165e8d73ca0704efe1a9c80b817751009e8a021a7c3ee53e770709761e2f2b2
SHA512

435f0c4fa708f9d0d39cda28c72598014e347c40017f8b6c3935ed96086b4e231332bf39de996a86f05300e82eaac2cf1c09d7f012d34adf44f1274c5707fa9f
SSDEEP

1536:u6QFElP6n+gWMOtEvwDpjJGYQbN/PKwMg6:u6a++OtEvwDpj6z2

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000231fc-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000231fc-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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-03-08_0400d82d63e7474ce26b21fb2ec9d5ed_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5008	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 4092 wrote to memory of 5008	4092	2024-03-08_0400d82d63e7474ce26b21fb2ec9d5ed_cryptolocker.exe	86
PID 4092 wrote to memory of 5008	4092	2024-03-08_0400d82d63e7474ce26b21fb2ec9d5ed_cryptolocker.exe	86
PID 4092 wrote to memory of 5008	4092	2024-03-08_0400d82d63e7474ce26b21fb2ec9d5ed_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-03-08_0400d82d63e7474ce26b21fb2ec9d5ed_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-08_0400d82d63e7474ce26b21fb2ec9d5ed_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4092
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:5008

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
122KB

MD5
d6ea18012f79962e7ad848e68418b95c

SHA1
c251da5422c71b0f2190500a51f9293bd16cd7f7

SHA256
c651d77c514e0f7aa96d49a472a7108cdb60aa3f217576ea8e8ffbe3b0077c9d

SHA512
5f52755bcd7a12cd4ba62d72f6e3b9131ad88c6650edc3c1934de21432c8f8bb0eadbeff004b7e8f229164f40125f87433cc82794fe80b5d5f0d76d5bf597bda

Download Submit
memory/4092-0-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/4092-1-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/4092-2-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/5008-17-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/5008-21-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download