aa84331720c4e011dc9264f1ad450b7206c2221f778305a4140d38517a99156d

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
17-05-2024 03:41

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General

Target

2024-05-17_9c10d97613308234588b7367e80d2a18_cryptolocker.exe
Size

33KB
MD5

9c10d97613308234588b7367e80d2a18
SHA1

197a05ba1dd2024a18d756730af82c3e109ec3fb
SHA256

aa84331720c4e011dc9264f1ad450b7206c2221f778305a4140d38517a99156d
SHA512

d775f171e02b1ba412531a8daf520df7d9a714b0ef6a6cad210be61fb9da843b575a269d704bd2969c1afba08efa30e4a3c1dbffe16244f335b858d61656a1d4
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznStEkcsgW:b/yC4GyNM01GuQMNXw2PSjSKkcJW

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000a00000002328e-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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-17_9c10d97613308234588b7367e80d2a18_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4396	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 1792 wrote to memory of 4396	1792	2024-05-17_9c10d97613308234588b7367e80d2a18_cryptolocker.exe	83
PID 1792 wrote to memory of 4396	1792	2024-05-17_9c10d97613308234588b7367e80d2a18_cryptolocker.exe	83
PID 1792 wrote to memory of 4396	1792	2024-05-17_9c10d97613308234588b7367e80d2a18_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-17_9c10d97613308234588b7367e80d2a18_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-17_9c10d97613308234588b7367e80d2a18_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1792
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  PID:4396

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
4449b52c90fcf2a0510a9e72315dcabf

SHA1
0f0370f4ca8e09d284e84491ac319d2b69b79d9d

SHA256
894bdb55228f8ae687f2deaf130c4eaf3497346572afcaf888ffe8ea5fa1a8de

SHA512
80ad16626d2c3d0984adafa7241042ba0218c4bdc535565c00b16ad6676f39582e519de2079745c36792db8cbad0a5b4f72e5bef62d17a4ac3fc0b77a43e024c

Download Submit
memory/1792-0-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/1792-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1792-8-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/4396-25-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download