c3143151735895a64cd447df40b57428c3e7730ea966ec2256224b8b05dd1b79

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
06/09/2024, 22:24

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General

Target

2024-09-06_c70e9644fd8c532d4a0307571d4ae3ae_cryptolocker.exe
Size

45KB
MD5

c70e9644fd8c532d4a0307571d4ae3ae
SHA1

144387256de700459137760337763d2f398b561a
SHA256

c3143151735895a64cd447df40b57428c3e7730ea966ec2256224b8b05dd1b79
SHA512

eab275a7c42b02aa1ef64d31fc563a17abd257f0eec22486235d55deba0222460a1bac6dfcf55a8ca464b8e0a1c09d2b3149ea43d6083dca419ac853164c8c1b
SSDEEP

768:bODOw9UiamWUB2preAr+OfjH/0STX73OBqG:bODOw9acifH+YG

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-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	2024-09-06_c70e9644fd8c532d4a0307571d4ae3ae_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4512	lossy.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4728-0-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/files/0x0009000000023426-13.dat	upx
behavioral2/memory/4728-17-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/memory/4512-26-0x0000000008000000-0x000000000800F000-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	2024-09-06_c70e9644fd8c532d4a0307571d4ae3ae_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 4728 wrote to memory of 4512	4728	2024-09-06_c70e9644fd8c532d4a0307571d4ae3ae_cryptolocker.exe	84
PID 4728 wrote to memory of 4512	4728	2024-09-06_c70e9644fd8c532d4a0307571d4ae3ae_cryptolocker.exe	84
PID 4728 wrote to memory of 4512	4728	2024-09-06_c70e9644fd8c532d4a0307571d4ae3ae_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-09-06_c70e9644fd8c532d4a0307571d4ae3ae_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-06_c70e9644fd8c532d4a0307571d4ae3ae_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4728
- 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:4512

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
45KB

MD5
a9c540bacc38be7f1d3f110ff9da84c9

SHA1
8b24b8d026a55aa38e759524273261ec2266a96c

SHA256
65e9d2288338fd7608cdfe4a1eb62347404effb6c0dbef4b25b559819541bd29

SHA512
19f2e513edfcff4e55f56165ba203cc1a57d2a0c81c1b17926f26b64fd4cfafb6564b0bcd9bb3ec4645acdb3467b3cca6d24f0f9a5c0dc3145ec6f49876e3a4a

Download Submit
memory/4512-19-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/4512-20-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/4512-26-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/4728-0-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/4728-1-0x0000000002140000-0x0000000002146000-memory.dmp

Filesize
24KB

Download
memory/4728-2-0x0000000002140000-0x0000000002146000-memory.dmp

Filesize
24KB

Download
memory/4728-3-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/4728-17-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download