41d754c1a42f043fd817d6e51736bbf8a3ebc76376f2025f8f81a4b6f84fbf66

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
11/04/2024, 08:49

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General

Target

2024-04-11_9da5efaef5755a4678e1767a0e0e45e7_cryptolocker.exe
Size

388KB
MD5

9da5efaef5755a4678e1767a0e0e45e7
SHA1

158f130a7b006858e6735bb3ad86483a265c2c18
SHA256

41d754c1a42f043fd817d6e51736bbf8a3ebc76376f2025f8f81a4b6f84fbf66
SHA512

7ab5db35f2f52592744dea89368adadffed604ab67d2a650f77fb9c762b38d1342c6fcccde654f6d261a7db202fedbd324063d10c0c3228973c2853957db95ea
SSDEEP

6144:nnOsaQgAOjvrZFODJjBz3j1jTqQy6v2GGnugOtihzXa:nnOflT/ZFIjBz3xjTxynGUOUhXa

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000a0000000231a5-12.dat	CryptoLocker_rule2

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-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	2024-04-11_9da5efaef5755a4678e1767a0e0e45e7_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2712	hasfj.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 4296 wrote to memory of 2712	4296	2024-04-11_9da5efaef5755a4678e1767a0e0e45e7_cryptolocker.exe	84
PID 4296 wrote to memory of 2712	4296	2024-04-11_9da5efaef5755a4678e1767a0e0e45e7_cryptolocker.exe	84
PID 4296 wrote to memory of 2712	4296	2024-04-11_9da5efaef5755a4678e1767a0e0e45e7_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-04-11_9da5efaef5755a4678e1767a0e0e45e7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-11_9da5efaef5755a4678e1767a0e0e45e7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4296
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2712

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\hasfj.exe

Filesize
388KB

MD5
b5882a7c289ca5119f5c5da1672ccb61

SHA1
68e05ba0c3d6e54abdcfcb31c2efd831236a53c9

SHA256
7f7b3779bf0552900b2619874bfef48df8fd7d83cde18a554a780d6170a4f876

SHA512
73ad971210dfca0a6514aac59902c5081b5adba9367612126621695d301588a5200655b68acd18a0685334741bb41da4fae50579d43b326f9e3fec15bdc80c07

Download Submit
memory/2712-17-0x0000000001F90000-0x0000000001F96000-memory.dmp

Filesize
24KB

Download
memory/2712-18-0x0000000001FC0000-0x0000000001FC6000-memory.dmp

Filesize
24KB

Download
memory/4296-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4296-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4296-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download