915e8ca1bf7bc79911b403e6cfec3f3378caf2b0a8d953fd608567b121c19ee6

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
19/09/2024, 03:27

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General

Target

2024-09-19_4255da7f6ff2825d78e1ae6507773a6b_cryptolocker.exe
Size

92KB
MD5

4255da7f6ff2825d78e1ae6507773a6b
SHA1

b5e3ae73b9cdf2d85a784d87c4550df5023bfce5
SHA256

915e8ca1bf7bc79911b403e6cfec3f3378caf2b0a8d953fd608567b121c19ee6
SHA512

33580bb9b892d141ded441eb0e3122eef36d85f70539a7a07816a8cab3f28341631377e31983ca32729bc7aa3cf388c8f4987e9693d142786ca6f3b13af6bf1c
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwMgdd22:AnBdOOtEvwDpj6z62

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-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	2024-09-19_4255da7f6ff2825d78e1ae6507773a6b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3040	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2320-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x00090000000234b1-13.dat	upx
behavioral2/memory/2320-18-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/3040-27-0x0000000000500000-0x000000000050F000-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	2024-09-19_4255da7f6ff2825d78e1ae6507773a6b_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 2320 wrote to memory of 3040	2320	2024-09-19_4255da7f6ff2825d78e1ae6507773a6b_cryptolocker.exe	82
PID 2320 wrote to memory of 3040	2320	2024-09-19_4255da7f6ff2825d78e1ae6507773a6b_cryptolocker.exe	82
PID 2320 wrote to memory of 3040	2320	2024-09-19_4255da7f6ff2825d78e1ae6507773a6b_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-09-19_4255da7f6ff2825d78e1ae6507773a6b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-19_4255da7f6ff2825d78e1ae6507773a6b_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2320
- 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:3040

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
92KB

MD5
cb8d774ffae2c4744c8dab72839acf46

SHA1
7c6b14b0886bb0dab41e86e769d1957858fcb576

SHA256
359b68f68de18d97d7d596fd51b5622c7c93ad5dd732154b578e1d52d48d37a7

SHA512
103cc0c37ff9171477530d79d59c6b73e2b9a473853a5da7bb95feb00bc1043b79e20223fc075ce2b36703abbe3daa9fb425d505ddeea265088a35e0ecb2748e

Download Submit
memory/2320-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2320-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2320-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2320-3-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/2320-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3040-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3040-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3040-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download