efc585005167abe6a76392600dfa5af604fde1b2b6be913ccf413decdabb27a1

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
16/04/2024, 11:39

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General

Target

2024-04-16_f89161e4356c537873a5f9ad235fdebd_cryptolocker.exe
Size

163KB
MD5

f89161e4356c537873a5f9ad235fdebd
SHA1

625f211e32fa8f67f139aa1488cf3066da4509c2
SHA256

efc585005167abe6a76392600dfa5af604fde1b2b6be913ccf413decdabb27a1
SHA512

ddfcf194dfd86b56d1d22c2fb023afce4364bf71981d494978fbe72bd10dd79c4fce55b8f046a09cab0219e32df9e9140860acad5ad06d1341a02a2d31c96316
SSDEEP

1536:u6QFElP6n+gWMOtEvwDpjJGYQbN/PKwNgp699GNtL1eIEMJ:u6a++OtEvwDpj6zq

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x001c00000001e97e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x001c00000001e97e-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-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	2024-04-16_f89161e4356c537873a5f9ad235fdebd_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
752	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 2240 wrote to memory of 752	2240	2024-04-16_f89161e4356c537873a5f9ad235fdebd_cryptolocker.exe	86
PID 2240 wrote to memory of 752	2240	2024-04-16_f89161e4356c537873a5f9ad235fdebd_cryptolocker.exe	86
PID 2240 wrote to memory of 752	2240	2024-04-16_f89161e4356c537873a5f9ad235fdebd_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-04-16_f89161e4356c537873a5f9ad235fdebd_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-16_f89161e4356c537873a5f9ad235fdebd_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2240
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:752

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
163KB

MD5
bc3524f1d273b725e2605d943c2ed5cb

SHA1
2f1b8fd0f8585a855eca3480cbba94f34c35e970

SHA256
829d2e22ca3060f43df83da2ab951e15d58cad49e92688c16ae03fc763eff287

SHA512
1f0f7cfa935995660736ea6bd0ac4dfe53abbfd2fbeb5a7db89a5226d1f4fd674a6fd71fcbc80014773d03132cf1e0b8d536d0bc5e3c1f9914d45f672abd17a2

Download Submit
memory/752-17-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/752-19-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/2240-0-0x0000000000690000-0x0000000000696000-memory.dmp

Filesize
24KB

Download
memory/2240-1-0x0000000000690000-0x0000000000696000-memory.dmp

Filesize
24KB

Download
memory/2240-2-0x0000000000840000-0x0000000000846000-memory.dmp

Filesize
24KB

Download