c98f27683cad1b519f4845cc68b57254c2251fac14ee726a6a98c3c571a88b19

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
05-09-2024 12:11

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General

Target

2024-09-05_941fbe3c0d14a06b76efb7c2dc4bf74e_cryptolocker.exe
Size

45KB
MD5

941fbe3c0d14a06b76efb7c2dc4bf74e
SHA1

2c788fcdf3882386ab40e863edbd91055a8a20e2
SHA256

c98f27683cad1b519f4845cc68b57254c2251fac14ee726a6a98c3c571a88b19
SHA512

07b09628fdd5fa8c1bf820cf3b1a633926f4415e4f7df3b58f1aa1b99c28490c6229999a49d5b6c5763189b7c89b51fcda3db3005fc6fb9b67077bfbbe368ab7
SSDEEP

768:b/yC4GyNM01GuQMNXw2PSjHPbSuYlW8PAwwr3:b/pYayGig5HjS3NPAdr3

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-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	2024-09-05_941fbe3c0d14a06b76efb7c2dc4bf74e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4120	retln.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 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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-05_941fbe3c0d14a06b76efb7c2dc4bf74e_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	retln.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3660 wrote to memory of 4120	3660	2024-09-05_941fbe3c0d14a06b76efb7c2dc4bf74e_cryptolocker.exe	86
PID 3660 wrote to memory of 4120	3660	2024-09-05_941fbe3c0d14a06b76efb7c2dc4bf74e_cryptolocker.exe	86
PID 3660 wrote to memory of 4120	3660	2024-09-05_941fbe3c0d14a06b76efb7c2dc4bf74e_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-09-05_941fbe3c0d14a06b76efb7c2dc4bf74e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-05_941fbe3c0d14a06b76efb7c2dc4bf74e_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3660
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4120

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\retln.exe

Filesize
45KB

MD5
9efd91b036b1a5cf26db92f9b7675a0b

SHA1
4d643facd6cb39d4ac5d7c6b4bc260be985600c4

SHA256
08dfc5af07e6b992c816167723669a1d742ad8242385a9505a13f54ee06c6cec

SHA512
c144c35a9c4a4630898aedecec6dcbf57dba7bb0bd6cc2f3e9e987c5442dd64158d5df95e7803d7c95b26b5e99f3276fe549b61cddcdd821366ee52ba481c1c5

Download Submit
memory/3660-0-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/3660-1-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/3660-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4120-25-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download