44c088bc15abcec776325ceea9bdfc1645d0dd1dee65fd32f76ab1cd9b8817ac

Analysis

max time kernel
148s
max time network
150s
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 01:07

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General

Target

2024-09-06_fa6bb2abcfed6d1f53679c164a0e0363_cryptolocker.exe
Size

38KB
MD5

fa6bb2abcfed6d1f53679c164a0e0363
SHA1

c3e1760bb4df5e18acde5e0b610f66b699b7771e
SHA256

44c088bc15abcec776325ceea9bdfc1645d0dd1dee65fd32f76ab1cd9b8817ac
SHA512

81c29a840a49e8e2013571fa2f64f3d5fa1fbf93072c99cc1b29b2e6e03643d41ddf7d238f6c6a7fcd7c972acb4b307d232c23027af9a20eebc3fa16a2da9cb0
SSDEEP

768:qUmnjFom/kLyMro2GtOOtEvwDpjeMLam5axK3hI:qUmnpomddpMOtEvwDpjjaYaQhI

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-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation	2024-09-06_fa6bb2abcfed6d1f53679c164a0e0363_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1760	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2876-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x000800000002346c-13.dat	upx
behavioral2/memory/2876-18-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/1760-27-0x0000000000500000-0x000000000050F000-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_fa6bb2abcfed6d1f53679c164a0e0363_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2876 wrote to memory of 1760	2876	2024-09-06_fa6bb2abcfed6d1f53679c164a0e0363_cryptolocker.exe	85
PID 2876 wrote to memory of 1760	2876	2024-09-06_fa6bb2abcfed6d1f53679c164a0e0363_cryptolocker.exe	85
PID 2876 wrote to memory of 1760	2876	2024-09-06_fa6bb2abcfed6d1f53679c164a0e0363_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-09-06_fa6bb2abcfed6d1f53679c164a0e0363_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-06_fa6bb2abcfed6d1f53679c164a0e0363_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2876
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1760

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\asih.exe

Filesize
38KB

MD5
70b076e34622d59e84efa0cbe46acbfa

SHA1
f6f07b1c8f3c9dfea94b47219d09290063397bf0

SHA256
c9602743225b4fe96d472efe2b59ebebdeb15c16a719137daa03876d3fcdd76d

SHA512
6215055e689fec10b705972b39a8175f791af3ac372254fa461ab50710934c7486844a1f03395538c255014f81c5390263325a1527e52f2b1ad133f7e96f59c0

Download Submit
memory/1760-21-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/1760-20-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/1760-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2876-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2876-1-0x0000000000800000-0x0000000000806000-memory.dmp

Filesize
24KB

Download
memory/2876-2-0x0000000000800000-0x0000000000806000-memory.dmp

Filesize
24KB

Download
memory/2876-3-0x0000000002240000-0x0000000002246000-memory.dmp

Filesize
24KB

Download
memory/2876-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download