b76f4569cb1a0d78d853ea99ee4e6a2113f861033f2d17bc8566126bdc2b515d

Analysis

max time kernel
150s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
30-05-2024 19:27

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General

Target

2024-05-30_92dd7156244a3027e8cdae993f788f2b_cryptolocker.exe
Size

31KB
MD5

92dd7156244a3027e8cdae993f788f2b
SHA1

678cc242b9fa9468abef99dc969894fb8dfcfd27
SHA256

b76f4569cb1a0d78d853ea99ee4e6a2113f861033f2d17bc8566126bdc2b515d
SHA512

eecaf5154fca945feaf6b9444f136d7eb3591fbc485d4add48e0751b0299cf7dcfb687dc24d37293779fe9e94a3e2f9eeee20e4132d2385c3bbd44296d87143b
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zznum+U8Ss87vhi6:b/yC4GyNM01GuQMNXum+NSni6

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000233c4-12.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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	2024-05-30_92dd7156244a3027e8cdae993f788f2b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1472	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 1020 wrote to memory of 1472	1020	2024-05-30_92dd7156244a3027e8cdae993f788f2b_cryptolocker.exe	82
PID 1020 wrote to memory of 1472	1020	2024-05-30_92dd7156244a3027e8cdae993f788f2b_cryptolocker.exe	82
PID 1020 wrote to memory of 1472	1020	2024-05-30_92dd7156244a3027e8cdae993f788f2b_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-30_92dd7156244a3027e8cdae993f788f2b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-30_92dd7156244a3027e8cdae993f788f2b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1020
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  PID:1472

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
31KB

MD5
d2605b8c353aa5bb2b9503437b231dd8

SHA1
ff719305bce33d29288cee870eaec89dada02d25

SHA256
d4b594bb7137fd9d807ee19f7f3db8d3021264bf4d3f8b4c051b0b6aa1408064

SHA512
4966447e57df814d230798462f248a9718eacde2f6b37ced8395121fef5427ba1aece4f183968ae442c3627b1374f8f7131ad65eed08600af636538cf87e2c00

Download Submit
memory/1020-0-0x0000000002150000-0x0000000002156000-memory.dmp

Filesize
24KB

Download
memory/1020-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1020-8-0x0000000002150000-0x0000000002156000-memory.dmp

Filesize
24KB

Download
memory/1472-25-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download