452c9761b86bfa1c5b99d0525b8e4a4a7e2016b024d3d217ad559aaf8a026af6

Analysis

max time kernel
129s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
19-09-2024 05:22

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General

Target

2024-09-19_0b4662d7b4ebbc4db77bd6f87e1953b7_cryptolocker.exe
Size

69KB
MD5

0b4662d7b4ebbc4db77bd6f87e1953b7
SHA1

032726b42aefe9a8e6d6c5ee5f79a57de068dd95
SHA256

452c9761b86bfa1c5b99d0525b8e4a4a7e2016b024d3d217ad559aaf8a026af6
SHA512

35b9ad89d1adcb161633207d007ce8206bddfb90a5aac86c315dd5e10085ecff85120bb31fca0b484d10eb0bcfbb6e21a77c2b49e549e574e1ac7da671c7b00d
SSDEEP

1536:z6QFElP6n+gKmddpMOtEvwDpj9aYaFAeBu:z6a+CdOOtEvwDpjQw

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-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	2024-09-19_0b4662d7b4ebbc4db77bd6f87e1953b7_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3848	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1868-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0008000000023412-13.dat	upx
behavioral2/memory/1868-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/3848-26-0x0000000000500000-0x0000000000510000-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	2024-09-19_0b4662d7b4ebbc4db77bd6f87e1953b7_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 1868 wrote to memory of 3848	1868	2024-09-19_0b4662d7b4ebbc4db77bd6f87e1953b7_cryptolocker.exe	82
PID 1868 wrote to memory of 3848	1868	2024-09-19_0b4662d7b4ebbc4db77bd6f87e1953b7_cryptolocker.exe	82
PID 1868 wrote to memory of 3848	1868	2024-09-19_0b4662d7b4ebbc4db77bd6f87e1953b7_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-09-19_0b4662d7b4ebbc4db77bd6f87e1953b7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-19_0b4662d7b4ebbc4db77bd6f87e1953b7_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1868
- 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:3848

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\asih.exe

Filesize
69KB

MD5
ee629b864b0957afa5d8a3a6bd21103f

SHA1
c92bf800e15212fb0726ba2e65f50af83342d6cc

SHA256
1759a5bfec4a774cd1bc69431a278345f9e3c5b12373f5b4cdfda11dffe3e093

SHA512
6af64c5fcccdea8a97b75034caa7add3442de7e2035a61dda34686556d65a74b40c17f307e1d43f58e631083e893e4a209f10728c803f221e8ce0e7e6ccd9c81

Download Submit
memory/1868-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1868-1-0x00000000007F0000-0x00000000007F6000-memory.dmp

Filesize
24KB

Download
memory/1868-2-0x00000000007F0000-0x00000000007F6000-memory.dmp

Filesize
24KB

Download
memory/1868-3-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/1868-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3848-19-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download
memory/3848-25-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/3848-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download