be3fb3ba42ddb93face7977a6e01c293dfad8a74c33d77209405d3baeb3b9b9e

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
03/05/2024, 02:55

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General

Target

be3fb3ba42ddb93face7977a6e01c293dfad8a74c33d77209405d3baeb3b9b9e.exe
Size

33KB
MD5

aacf0abc2f81e9b9365aec61cadc44ac
SHA1

962aed1c7634b0c773d54c5e5dae8c615529a9e2
SHA256

be3fb3ba42ddb93face7977a6e01c293dfad8a74c33d77209405d3baeb3b9b9e
SHA512

34db510a3f5ca12356b23b25fc06f8a0e48b468afa2b512888d533ba7eebb72684a368191e8bebcda61ac1c165183a4a082dafd6c6d07149310d7a77b3660b1c
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznStEkcsgRI:b/yC4GyNM01GuQMNXw2PSjSKkcJRI

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000002342c-12.dat	CryptoLocker_rule2

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-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	be3fb3ba42ddb93face7977a6e01c293dfad8a74c33d77209405d3baeb3b9b9e.exe

Executes dropped EXE 1 IoCs

pid	Process
424	retln.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2692 wrote to memory of 424	2692	be3fb3ba42ddb93face7977a6e01c293dfad8a74c33d77209405d3baeb3b9b9e.exe	83
PID 2692 wrote to memory of 424	2692	be3fb3ba42ddb93face7977a6e01c293dfad8a74c33d77209405d3baeb3b9b9e.exe	83
PID 2692 wrote to memory of 424	2692	be3fb3ba42ddb93face7977a6e01c293dfad8a74c33d77209405d3baeb3b9b9e.exe	83

C:\Users\Admin\AppData\Local\Temp\be3fb3ba42ddb93face7977a6e01c293dfad8a74c33d77209405d3baeb3b9b9e.exe
"C:\Users\Admin\AppData\Local\Temp\be3fb3ba42ddb93face7977a6e01c293dfad8a74c33d77209405d3baeb3b9b9e.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2692
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  PID:424

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
33KB

MD5
bf010bc8e42343d4148ed0f40e2a00f8

SHA1
2f5894ae9b7e11578b29ca843243bfdf2e9a9441

SHA256
55ef71bd6fa9eefde83b1a696f1ee318bcf6aeffb8aa83a2d2b5440823985aa8

SHA512
e693c6bdc29461c8a5938b72a74fa95dc7ddcd06a478816ca3354da4d1d45429a10dda6ac346f1d50d7636fd7ce69b9e72d93c1141753e936805c6fc9e4a8e71

Download Submit
memory/2692-0-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/2692-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2692-8-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download