87c90d4dc3d0897bb632926b47804e070181a645bea817ed823dba498665fee2

Analysis

max time kernel
154s
max time network
162s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
07-01-2024 12:13

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General

Target

2024-01-06_991663f006fd52ff7ed40b190f47f8cf_cryptolocker.exe
Size

32KB
MD5

991663f006fd52ff7ed40b190f47f8cf
SHA1

fb768c7e137ad1e454836a7fe52f2847b9667655
SHA256

87c90d4dc3d0897bb632926b47804e070181a645bea817ed823dba498665fee2
SHA512

d4cc95361de6b5ca067ea963f5bb7fd660f127edd952221e8e890dd72ba2e4fd43b53be3a3daa2500efa02dbd3ddc60e4560576b07d417e701d4d42a68195a63
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznHzl6AmflxB:b/yC4GyNM01GuQMNXw2PSjHWzB

Score

7^/10

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-1-5-21-3336304223-2978740688-3645194410-1000\Control Panel\International\Geo\Nation	2024-01-06_991663f006fd52ff7ed40b190f47f8cf_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5036	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 1416 wrote to memory of 5036	1416	2024-01-06_991663f006fd52ff7ed40b190f47f8cf_cryptolocker.exe	42
PID 1416 wrote to memory of 5036	1416	2024-01-06_991663f006fd52ff7ed40b190f47f8cf_cryptolocker.exe	42
PID 1416 wrote to memory of 5036	1416	2024-01-06_991663f006fd52ff7ed40b190f47f8cf_cryptolocker.exe	42

C:\Users\Admin\AppData\Local\Temp\2024-01-06_991663f006fd52ff7ed40b190f47f8cf_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-06_991663f006fd52ff7ed40b190f47f8cf_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1416
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  PID:5036

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

memory/1416-0-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/1416-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1416-1-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/5036-19-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download