65499573707cc31b51b9da2d7e6ffffc414dcbfe47a1dfc5dcdca8af8b43379f

Analysis

max time kernel
12s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
02-11-2024 06:20

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General

Target

2024-11-02_ba165cf4e4ae56fadf888d74c974a357_cryptolocker.exe
Size

34KB
MD5

ba165cf4e4ae56fadf888d74c974a357
SHA1

495d9b8c2cc9dec853a8ed42c94c032fb948524c
SHA256

65499573707cc31b51b9da2d7e6ffffc414dcbfe47a1dfc5dcdca8af8b43379f
SHA512

cbab8379ddb95d1bda037f2c5c447c00ebd914a873d904991d62f37d90489b0a57d80d640b307158eda129ef8867eb5190446f058f697a8bfeee8bdc28c50c8f
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznStEEr9VE/cop:b/yC4GyNM01GuQMNXw2PSjSKEBVE/cK

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

retln.exe

pid process

2380 retln.exe
Loads dropped DLL 1 IoCs

Processes:

2024-11-02_ba165cf4e4ae56fadf888d74c974a357_cryptolocker.exe

pid process

2204 2024-11-02_ba165cf4e4ae56fadf888d74c974a357_cryptolocker.exe
Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046

pid	process
2380	retln.exe

pid	process
2204	2024-11-02_ba165cf4e4ae56fadf888d74c974a357_cryptolocker.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_ba165cf4e4ae56fadf888d74c974a357_cryptolocker.exeretln.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-11-02_ba165cf4e4ae56fadf888d74c974a357_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	retln.exe

Suspicious use of UnmapMainImage 2 IoCs

Processes:

2024-11-02_ba165cf4e4ae56fadf888d74c974a357_cryptolocker.exeretln.exe

pid process

2204 2024-11-02_ba165cf4e4ae56fadf888d74c974a357_cryptolocker.exe
2380 retln.exe

pid	process
2204	2024-11-02_ba165cf4e4ae56fadf888d74c974a357_cryptolocker.exe
2380	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-11-02_ba165cf4e4ae56fadf888d74c974a357_cryptolocker.exe

description	pid	process	target process
PID 2204 wrote to memory of 2380	2204	2024-11-02_ba165cf4e4ae56fadf888d74c974a357_cryptolocker.exe	retln.exe
PID 2204 wrote to memory of 2380	2204	2024-11-02_ba165cf4e4ae56fadf888d74c974a357_cryptolocker.exe	retln.exe
PID 2204 wrote to memory of 2380	2204	2024-11-02_ba165cf4e4ae56fadf888d74c974a357_cryptolocker.exe	retln.exe
PID 2204 wrote to memory of 2380	2204	2024-11-02_ba165cf4e4ae56fadf888d74c974a357_cryptolocker.exe	retln.exe

C:\Users\Admin\AppData\Local\Temp\2024-11-02_ba165cf4e4ae56fadf888d74c974a357_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-02_ba165cf4e4ae56fadf888d74c974a357_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2204

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
- Suspicious use of UnmapMainImage
PID:2380

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\retln.exe

Filesize
34KB

MD5
5026d24a3e74191cd0824aadd744ad25

SHA1
aea8ed9e68178f3cf2993e579021752a6f358aa2

SHA256
0ff1d4fea6d7db6bb06e57b232b8d49b0825f45d9971e69e802ced14498158c1

SHA512
af71b894477acdaefe3514f45970a0c5133e81580dbc9ac8797a9053f1833cc36de6de4cca9c3aaf2345b6204dc8b1c8bf3b7f1d9f630e09701f55004c69d2ae

Download Submit
memory/2204-0-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download
memory/2204-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2204-9-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download
memory/2380-23-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download