5c6b7e8ca85cfcb72a87e10581947793ce90d63fbcb6fb0bf5296bc0921af41d

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240220-en
resource tags

arch:x64arch:x86image:win10v2004-20240220-enlocale:en-usos:windows10-2004-x64system
submitted
20/02/2024, 12:40

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General

Target

2024-02-20_a851d7322cb5c8e0ce708b889b25a9f5_cryptolocker.exe
Size

98KB
MD5

a851d7322cb5c8e0ce708b889b25a9f5
SHA1

c26652b2f784c3ad54948ac3939f6e6b256cf5b2
SHA256

5c6b7e8ca85cfcb72a87e10581947793ce90d63fbcb6fb0bf5296bc0921af41d
SHA512

7f228fbafb20b9468329c7a6866f4d969496ce5ecffd1adbe2f0e3b8140cef8d0b68cfa0e26524513c31b0f9fe07ac0a1734b67f5b588e8dcf08fe79e92782ee
SSDEEP

1536:26QFElP6n+gBQMOtEvwDpjQGYQbN/PKwNCJ3:26a+2OtEvwDpjtzu

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0004000000022733-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0004000000022733-12.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-1-5-21-4023562663-3911442808-1494947993-1000\Control Panel\International\Geo\Nation	2024-02-20_a851d7322cb5c8e0ce708b889b25a9f5_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3324	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 3200 wrote to memory of 3324	3200	2024-02-20_a851d7322cb5c8e0ce708b889b25a9f5_cryptolocker.exe	88
PID 3200 wrote to memory of 3324	3200	2024-02-20_a851d7322cb5c8e0ce708b889b25a9f5_cryptolocker.exe	88
PID 3200 wrote to memory of 3324	3200	2024-02-20_a851d7322cb5c8e0ce708b889b25a9f5_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-02-20_a851d7322cb5c8e0ce708b889b25a9f5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-20_a851d7322cb5c8e0ce708b889b25a9f5_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3200
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3324

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
98KB

MD5
81124bc33565594f95e66df0ae3ea790

SHA1
6c03a60748aee6d6552a26ab2cc505e8b72aecaf

SHA256
6e5fd386f9271915e9dd6eb22bd509b6bd3842ff0293a898d88107babe47b77a

SHA512
5b5d5ad12e72188afc0bddfba87b17a1c9df413812b14ace8cd9d5598387db1a683d538c805a8e38a8090e0dc33f4fd84a25d36d0982149d3f16fa5af719e0fd

Download Submit
memory/3200-0-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/3200-1-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/3200-2-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/3324-18-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3324-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download