63241a0733aa41c7804fdad349240d4eb07cd402e8ed0f9fb35ae596671a68cc

Analysis

max time kernel
150s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
28/09/2024, 04:56

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General

Target

2024-09-28_fd6c8395f522d4bf16080df0c95d5514_cryptolocker.exe
Size

37KB
MD5

fd6c8395f522d4bf16080df0c95d5514
SHA1

c00cf5612f74d6fe17b3a74e9ae0b8399004ead3
SHA256

63241a0733aa41c7804fdad349240d4eb07cd402e8ed0f9fb35ae596671a68cc
SHA512

d23b9d7cd1c6216c4a7a89cfb68a7e113980d859aaae74521859821c02613e23876c97c12177cbcbf577a1b51e2e304837ee58080968419c7cc87cef09555a11
SSDEEP

768:b/yC4GyNM01GuQMNXw2PSjHPbSuYlU7hl:b/pYayGig5HjS3ull

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-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	2024-09-28_fd6c8395f522d4bf16080df0c95d5514_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4908	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	2024-09-28_fd6c8395f522d4bf16080df0c95d5514_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 2736 wrote to memory of 4908	2736	2024-09-28_fd6c8395f522d4bf16080df0c95d5514_cryptolocker.exe	82
PID 2736 wrote to memory of 4908	2736	2024-09-28_fd6c8395f522d4bf16080df0c95d5514_cryptolocker.exe	82
PID 2736 wrote to memory of 4908	2736	2024-09-28_fd6c8395f522d4bf16080df0c95d5514_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-09-28_fd6c8395f522d4bf16080df0c95d5514_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-28_fd6c8395f522d4bf16080df0c95d5514_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2736
- 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:4908

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
37KB

MD5
5ceb4dcc0e96bbf5885e315b07131172

SHA1
a3dba6ffca77c63ffa78442572bdacb963a55d10

SHA256
f6bc2d6017fad7e630cef53c917b94157fc306399fab63447d37968c46ce09d1

SHA512
39babb4a772c4b346f4c42b39e44d57a12cb88fe7d3506c003880e297b36c7a72a501511816fa2d2ff1d4c33d623ca5f86686bdcc410681e2e11fcaedaf1e900

Download Submit
memory/2736-0-0x0000000002340000-0x0000000002346000-memory.dmp

Filesize
24KB

Download
memory/2736-1-0x0000000002340000-0x0000000002346000-memory.dmp

Filesize
24KB

Download
memory/2736-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4908-19-0x0000000001F80000-0x0000000001F86000-memory.dmp

Filesize
24KB

Download