f6c021913201342fbeb88ae6242494541392995734dca641bc6bf0ba47872801

Analysis

max time kernel
149s
max time network
152s
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 06:27

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General

Target

2024-11-02_bfb51dc5702b9e40678b0a7e920ba22e_cryptolocker.exe
Size

36KB
MD5

bfb51dc5702b9e40678b0a7e920ba22e
SHA1

7e133820cdae50162710f41c807d08ac5ab02d2a
SHA256

f6c021913201342fbeb88ae6242494541392995734dca641bc6bf0ba47872801
SHA512

7f0e33ad810a28733d2aa39a34632483c048abec01ca8a90061ba88006470751c1c185c4660720e79a600697366e47b8d99ff2166d0dc51a3fd46029ad5b61d8
SSDEEP

768:b7o/2n1TCraU6GD1a4Xt9bRU6zA6oTy4l:bc/y2lLRU6zA6cx

Score

7^/10

discovery

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_bfb51dc5702b9e40678b0a7e920ba22e_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	2024-11-02_bfb51dc5702b9e40678b0a7e920ba22e_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

rewok.exe

pid process

1080 rewok.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1080	rewok.exe

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_bfb51dc5702b9e40678b0a7e920ba22e_cryptolocker.exerewok.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-11-02_bfb51dc5702b9e40678b0a7e920ba22e_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rewok.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-11-02_bfb51dc5702b9e40678b0a7e920ba22e_cryptolocker.exe

description	pid	process	target process
PID 2880 wrote to memory of 1080	2880	2024-11-02_bfb51dc5702b9e40678b0a7e920ba22e_cryptolocker.exe	rewok.exe
PID 2880 wrote to memory of 1080	2880	2024-11-02_bfb51dc5702b9e40678b0a7e920ba22e_cryptolocker.exe	rewok.exe
PID 2880 wrote to memory of 1080	2880	2024-11-02_bfb51dc5702b9e40678b0a7e920ba22e_cryptolocker.exe	rewok.exe

C:\Users\Admin\AppData\Local\Temp\2024-11-02_bfb51dc5702b9e40678b0a7e920ba22e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-02_bfb51dc5702b9e40678b0a7e920ba22e_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2880

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:1080

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

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Downloads

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

Filesize
36KB

MD5
2eb986911f69594d31863fe0b40c9f7d

SHA1
28c294f21c531f7f4c278227450a859eb005bd50

SHA256
df4513e54d2a049fea9ed475d294a05e745383e95e96497de1878d9a1bb0b89c

SHA512
73f534c061d5ade15318e712b52e147fe0c1c9ab6ab7cc7c2dd2c1457a97c2f25ba9faa72f27d1785aaf938cd9533e51d7e48d028ff138d85d24eef65880aa0c

Download Submit
memory/1080-25-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download
memory/2880-0-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/2880-1-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/2880-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download