b0719e7fa41b03f304a46a6de605aab92a745f8ad4baa233b7f507d1ed97c4c4

Analysis

max time kernel
150s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
09-09-2024 01:55

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General

Target

2024-09-09_d1321fdf8304f71635101cfb26677ad8_cryptolocker.exe
Size

52KB
MD5

d1321fdf8304f71635101cfb26677ad8
SHA1

495a3ef55f9d4a02583341811741c9a80f82737f
SHA256

b0719e7fa41b03f304a46a6de605aab92a745f8ad4baa233b7f507d1ed97c4c4
SHA512

e24fc304f64529857de8f6d36ad4e9b398f6cc45696fa377c60841b6d30e9af2c1a213d4bd78e64bcf878cefb25b91cd15a2cb7a532cbad5214b9347fb973ca4
SSDEEP

768:bODOw9UiamWUB2preAr+OfjH/0S16avdrQFiLjJvtXB:bODOw9acifAoc+vXB

Score

7^/10

discovery upx

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-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	2024-09-09_d1321fdf8304f71635101cfb26677ad8_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4640	lossy.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/1852-0-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/files/0x00090000000233d9-13.dat	upx
behavioral2/memory/1852-17-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/memory/4640-26-0x0000000008000000-0x000000000800F000-memory.dmp	upx

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	2024-09-09_d1321fdf8304f71635101cfb26677ad8_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	lossy.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1852 wrote to memory of 4640	1852	2024-09-09_d1321fdf8304f71635101cfb26677ad8_cryptolocker.exe	83
PID 1852 wrote to memory of 4640	1852	2024-09-09_d1321fdf8304f71635101cfb26677ad8_cryptolocker.exe	83
PID 1852 wrote to memory of 4640	1852	2024-09-09_d1321fdf8304f71635101cfb26677ad8_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-09-09_d1321fdf8304f71635101cfb26677ad8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-09_d1321fdf8304f71635101cfb26677ad8_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1852
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4640

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\lossy.exe

Filesize
52KB

MD5
1fb32c9ab879d4a7b624b47f3aababc0

SHA1
a8a77c291eff34eee3265348f2d03978b2fd0421

SHA256
91cf6a16f391958162c816250ff240c9be8bf74caf00453538fd8a0b4ff75fb9

SHA512
f3d2466ea87eb395ec6e3108ae2968395696b7bdad816287b12d8744ef3e7ea6b3ed6f5e7aa4819e4a4228184d628aafbf3e4a0c9ff29c64cfe96baa3c91a8d3

Download Submit
memory/1852-0-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/1852-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/1852-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/1852-3-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/1852-17-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/4640-19-0x0000000001F40000-0x0000000001F46000-memory.dmp

Filesize
24KB

Download
memory/4640-20-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/4640-26-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download