9500dce835dca518f0d5abffce9618c7e549ab38d9d12b7cdfecb3fc43a95236

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
12-02-2024 17:44

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General

Target

2024-02-12_983070050305f2904e6b4a4da232ab75_cryptolocker.exe
Size

32KB
MD5

983070050305f2904e6b4a4da232ab75
SHA1

e9a32b2dcde5029be46d1c2fcc8548630b7cb84f
SHA256

9500dce835dca518f0d5abffce9618c7e549ab38d9d12b7cdfecb3fc43a95236
SHA512

1581b8ead8d114a7052d6894624a821c4fb4a4cb6afe652e5fc05bf43ed3b775764c5bffb38421518046452e257910b253e4d594cb28f75a13fa340aada13a7c
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/B1RwFtl:b7o/2n1TCraU6GD1a4Xt9bRw9

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\rewok.exe	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

Processes:

2024-02-12_983070050305f2904e6b4a4da232ab75_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-02-12_983070050305f2904e6b4a4da232ab75_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

rewok.exe

pid process

1548 rewok.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1548	rewok.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-02-12_983070050305f2904e6b4a4da232ab75_cryptolocker.exe

description	pid	process	target process
PID 4276 wrote to memory of 1548	4276	2024-02-12_983070050305f2904e6b4a4da232ab75_cryptolocker.exe	rewok.exe
PID 4276 wrote to memory of 1548	4276	2024-02-12_983070050305f2904e6b4a4da232ab75_cryptolocker.exe	rewok.exe
PID 4276 wrote to memory of 1548	4276	2024-02-12_983070050305f2904e6b4a4da232ab75_cryptolocker.exe	rewok.exe

C:\Users\Admin\AppData\Local\Temp\2024-02-12_983070050305f2904e6b4a4da232ab75_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_983070050305f2904e6b4a4da232ab75_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4276

C:\Users\Admin\AppData\Local\Temp\rewok.exe
"C:\Users\Admin\AppData\Local\Temp\rewok.exe"
2⤵
- Executes dropped EXE
PID:1548

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\rewok.exe

Filesize
32KB

MD5
b3dd6f7aac7c05a0bf1845099607d01c

SHA1
1ab42701aa4e5fce891608170a63157a1182fff3

SHA256
c9bacb05548a53d0c594b2eeb1767346fe23f9cff8541d5025260b5ad73fa2e3

SHA512
e1b5cfc49b393a37045d1d3162fdd0aae6d858fc1872163c29dac0ec93f62e0e1efb64e5e2babba72cc4831df4c7d90a7fa738645c2b1b73cc89edef9264141d

Download Submit
memory/1548-19-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download
memory/4276-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/4276-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/4276-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download