a5427a1b4cefc1390bc530468b98774d40f9c41926cc3f472260bc95a4d486bb

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
11/05/2024, 11:21

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General

Target

2024-05-11_2c56390dd44d81c80a345a0b1c304296_cryptolocker.exe
Size

51KB
MD5

2c56390dd44d81c80a345a0b1c304296
SHA1

708f827097bfc2d159236f15abb89cb368006593
SHA256

a5427a1b4cefc1390bc530468b98774d40f9c41926cc3f472260bc95a4d486bb
SHA512

b6c53804b0f2c5ffcf871aa3deb3b6fc7f1b5e9baf15f8c6b422aecff835fa5120ff881210e96ee2d76b966a09b3816050625455f4600ea480b3fa9a5d184564
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaaEqbIu55id3AMWZYM:X6QFElP6n+gJQMOtEvwDpjB0GIWiWLiM

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023305-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023305-12.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-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	2024-05-11_2c56390dd44d81c80a345a0b1c304296_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1536	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 2112 wrote to memory of 1536	2112	2024-05-11_2c56390dd44d81c80a345a0b1c304296_cryptolocker.exe	83
PID 2112 wrote to memory of 1536	2112	2024-05-11_2c56390dd44d81c80a345a0b1c304296_cryptolocker.exe	83
PID 2112 wrote to memory of 1536	2112	2024-05-11_2c56390dd44d81c80a345a0b1c304296_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-11_2c56390dd44d81c80a345a0b1c304296_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-11_2c56390dd44d81c80a345a0b1c304296_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2112
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1536

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
51KB

MD5
075006a72a9f2bbba42182243cde17af

SHA1
62af6c88834c53cd214efca5a3f9ffb03a67d44c

SHA256
b2274be1e72e05b4c153bbbcd0b91cf585ff585725a9aaf20e60a06b5c91b4ec

SHA512
1d58010dd74baa5d36d27faa957406d8c5588593c48cf1807a7fcbd80fecb64c3ae2dc0efc3dfc4a2801ef409a43b99765ebc5ccd7c284478a793072c4bc0ec4

Download Submit
memory/1536-17-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/1536-23-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2112-0-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/2112-1-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/2112-2-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download