f7b7caa3f3a34505f9c8fc967b29a3bf0bc14258c601abec0685cd1604045145

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
18-10-2024 00:25

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General

Target

2024-10-18_0f53ca8fbae0d5db821be88dd05009f0_cryptolocker.exe
Size

30KB
MD5

0f53ca8fbae0d5db821be88dd05009f0
SHA1

95ec9636b5e9376b88ef670c6d39ca2f3a5f4e4a
SHA256

f7b7caa3f3a34505f9c8fc967b29a3bf0bc14258c601abec0685cd1604045145
SHA512

e856fe930251f054a806d4fdf399564f7d62012781830fb71b48d51f565572869bfdf739ba4e89076f4e047a57180390f77ba0dd572ace34ba215faa2b200124
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznC9:b/yC4GyNM01GuQMNXw2PSjk

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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	2024-10-18_0f53ca8fbae0d5db821be88dd05009f0_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1304	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	2024-10-18_0f53ca8fbae0d5db821be88dd05009f0_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 1984 wrote to memory of 1304	1984	2024-10-18_0f53ca8fbae0d5db821be88dd05009f0_cryptolocker.exe	85
PID 1984 wrote to memory of 1304	1984	2024-10-18_0f53ca8fbae0d5db821be88dd05009f0_cryptolocker.exe	85
PID 1984 wrote to memory of 1304	1984	2024-10-18_0f53ca8fbae0d5db821be88dd05009f0_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-10-18_0f53ca8fbae0d5db821be88dd05009f0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-18_0f53ca8fbae0d5db821be88dd05009f0_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1984
- 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:1304

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

Replay Monitor

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Downloads

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

Filesize
30KB

MD5
913e5492843409f3c4fe6cf1f3cf978d

SHA1
14d4d6227eb90fe59d05c46101eabcc0fd737e45

SHA256
9dc0728ca083a411e9e349539263f787e7ef645c9658f6abbfd2b04f479f54c5

SHA512
f860b53f76d920eeb1e413e842f1664290230f9122fd146727821b8bf307bf31c9992dc1e289f5648fbee0b667c0509524798621f7e25d69f4850b47385beb29

Download Submit
memory/1304-25-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

Filesize
24KB

Download
memory/1984-0-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/1984-1-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/1984-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download