2761452e4d14bb933196dcc7f63d05f25811a626d5791e3ef71d22f81cb06cc2

Analysis

max time kernel
151s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
24/02/2024, 06:45

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General

Target

2024-02-24_f23386eabcf56f9384976a5ad435fe04_cryptolocker.exe
Size

386KB
MD5

f23386eabcf56f9384976a5ad435fe04
SHA1

477b294c974544a96c2606e19924f2f8a1236e15
SHA256

2761452e4d14bb933196dcc7f63d05f25811a626d5791e3ef71d22f81cb06cc2
SHA512

2430fdcad2eca884d94c840ebc788845e79354efd11949d4237a162929a7c5fcfd2e9d18578a6d40b868ad92fb5d1a354fb9748a457e395dfa2c9d4f7c5374c4
SSDEEP

6144:nnOsaQgAOjvrZFODJjBz3j1jTqQy6v2GGnugOtihzXx:nnOflT/ZFIjBz3xjTxynGUOUhXx

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001ef19-12.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-1-5-21-2828415587-3732861812-1919322417-1000\Control Panel\International\Geo\Nation	2024-02-24_f23386eabcf56f9384976a5ad435fe04_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1940	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 2448 wrote to memory of 1940	2448	2024-02-24_f23386eabcf56f9384976a5ad435fe04_cryptolocker.exe	92
PID 2448 wrote to memory of 1940	2448	2024-02-24_f23386eabcf56f9384976a5ad435fe04_cryptolocker.exe	92
PID 2448 wrote to memory of 1940	2448	2024-02-24_f23386eabcf56f9384976a5ad435fe04_cryptolocker.exe	92

C:\Users\Admin\AppData\Local\Temp\2024-02-24_f23386eabcf56f9384976a5ad435fe04_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-24_f23386eabcf56f9384976a5ad435fe04_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2448
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1940

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
386KB

MD5
b4d21f7e44bf5d53e658712dbeee5293

SHA1
bfc645c2d68675aaa2379c92bf66ac471407b443

SHA256
c24ee63cda1e1b9252abe4601c08c20c5ea8b2cb18779763a7ae59711a2364a1

SHA512
673b674507fc2979f52f1014660fa31304c675171349819c393bae9b533e63992949fefc92d9120d96472251de247da75e9d42550486cd6a57cc58897d8ed98e

Download Submit
memory/1940-17-0x0000000002ED0000-0x0000000002ED6000-memory.dmp

Filesize
24KB

Download
memory/1940-18-0x00000000020A0000-0x00000000020A6000-memory.dmp

Filesize
24KB

Download
memory/2448-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2448-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2448-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download