d2ad1908d041d0b2b09d2ffb68d98881f0aff30b9055c6670aa623587ba35224

Analysis

max time kernel
430s
max time network
434s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
25-09-2024 18:42

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

rk_free_setup_301.exe
Size

1.8MB
MD5

3935c389ed8451df43c021cbb8dcd740
SHA1

10810b87d883c4a006f4499d973610b95c14c2b6
SHA256

d2ad1908d041d0b2b09d2ffb68d98881f0aff30b9055c6670aa623587ba35224
SHA512

e4f23c3acc3bb68beedc42226ed94c6cf27cd8ea42a8ad51c290b25110ae7accee90f4ca4a80a4908d2da043ca55e0be517bdfb00bc59697bb7ddc8cdeb1ec05
SSDEEP

24576:8KUExvA9TdrqkCdrFfzsUtCDWGFvR/AifP03FfzsUPWZCs:8+QkdFboaGH/f0ZbPWZCs

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation	rk_free_setup_301.exe

Executes dropped EXE 1 IoCs

pid	Process
3616	rkfree_setup64.exe

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 1 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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rk_free_setup_301.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3616	rkfree_setup64.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3016 wrote to memory of 3616	3016	rk_free_setup_301.exe	82
PID 3016 wrote to memory of 3616	3016	rk_free_setup_301.exe	82

C:\Users\Admin\AppData\Local\Temp\rk_free_setup_301.exe
"C:\Users\Admin\AppData\Local\Temp\rk_free_setup_301.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3016
- C:\Users\Admin\AppData\Local\Temp\rkfree_setup\rkfree_setup64.exe
  "C:\Users\Admin\AppData\Local\Temp\rkfree_setup\rkfree_setup64.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:3616

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\rkfree_setup\rkfree_setup64.exe

Filesize
967KB

MD5
521f2a5c686f718e3ca2dca5f4af2b49

SHA1
0d26e7d1541dff2e922b18c3ed5556f9f05e85d5

SHA256
7444dc7f026376291df6bc0ba8a1ef4a97b22b7efa1ff446e8b7ee83814f0533

SHA512
44fc79ad4c8ffe2197aeb3ea28fcd15412f707108e8b8b576b35fe38f9e8626f23b3983a9713ea161a4397c25d0329d1b0113417706500ee565e029dd3b31bd7

Download Submit