0c68996baa926fade42b74ece8a24b13b94beb26c6fc33102566dddc21b1467e

Analysis

max time kernel
149s
max time network
105s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
02-11-2024 06:14

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-11-02_a9062674973f1722c74906196f840343_cryptolocker.exe
Size

55KB
MD5

a9062674973f1722c74906196f840343
SHA1

a4b8e7437177626980e63a14ef1099c5ece0629a
SHA256

0c68996baa926fade42b74ece8a24b13b94beb26c6fc33102566dddc21b1467e
SHA512

19152e5ce0b2eba071f1ece153fcfc86eec169c6d55bb5521e6f4b18c8d6ef84ecc6727d20a6487d603ad13589388c0389fe5aeb74206e0586516c52cdf6ce44
SSDEEP

768:bco/2n1TCraU6GD1P2wZEjbhxnbcuyD7U9kXDn62tH/1/LpPFPp:b7/y28wZEjbnouy8G76iH/NLpz

Score

7^/10

discovery upx

Malware Config

Signatures

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:

2024-11-02_a9062674973f1722c74906196f840343_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	2024-11-02_a9062674973f1722c74906196f840343_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

rewok.exe

pid process

2640 rewok.exe

pid	process
2640	rewok.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral2/memory/3576-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
C:\Users\Admin\AppData\Local\Temp\rewok.exe	upx

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

2024-11-02_a9062674973f1722c74906196f840343_cryptolocker.exerewok.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-11-02_a9062674973f1722c74906196f840343_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rewok.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-11-02_a9062674973f1722c74906196f840343_cryptolocker.exe

description	pid	process	target process
PID 3576 wrote to memory of 2640	3576	2024-11-02_a9062674973f1722c74906196f840343_cryptolocker.exe	rewok.exe
PID 3576 wrote to memory of 2640	3576	2024-11-02_a9062674973f1722c74906196f840343_cryptolocker.exe	rewok.exe
PID 3576 wrote to memory of 2640	3576	2024-11-02_a9062674973f1722c74906196f840343_cryptolocker.exe	rewok.exe

C:\Users\Admin\AppData\Local\Temp\2024-11-02_a9062674973f1722c74906196f840343_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-02_a9062674973f1722c74906196f840343_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3576

C:\Users\Admin\AppData\Local\Temp\rewok.exe
"C:\Users\Admin\AppData\Local\Temp\rewok.exe"
2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:2640

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
55KB

MD5
ddfe6f8b6775e67d48a98b259f961999

SHA1
ad32eb10912b9f2bfc91c1d2bb6dc04a333d03a5

SHA256
56ff2e92db5bb9316b82503e1fac9a860c07a461ddd347e3bd2587db9127a54f

SHA512
94eedb1edae2c4637a204cdaba2487e2c1e9f4169d45659db46587984af77957449f6ebf27da3f4e45f7e4af34eb11ecb23c65476e34fa79c6c34ece4aef3165

Download Submit
memory/2640-26-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/3576-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/3576-1-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/3576-3-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3576-2-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download