0908499707525eab76c17506eb7905e91a1fda4c1ef02c3d603a85135e9dc5d8

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
04/10/2024, 03:48

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General

Target

2024-10-04_d081578630a79b435f2ced4e829f6af1_cryptolocker.exe
Size

38KB
MD5

d081578630a79b435f2ced4e829f6af1
SHA1

7cc49fa41d00f294a5fd59464d3e76e712ec49f9
SHA256

0908499707525eab76c17506eb7905e91a1fda4c1ef02c3d603a85135e9dc5d8
SHA512

e4826fd1a200a0b9516cff220dee693f8907bbc218bf32b92f6ae89f4c37f14afd8ce1b5130b9c2f5648f4c7de4b7e0eec0b4063dd867225b5f0b930e38d72ca
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITe:qDdFJy3QMOtEvwDpjjWMl7Te

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-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	2024-10-04_d081578630a79b435f2ced4e829f6af1_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5112	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1704-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x00090000000233c7-13.dat	upx
behavioral2/memory/1704-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/5112-27-0x0000000000500000-0x0000000000510000-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	2024-10-04_d081578630a79b435f2ced4e829f6af1_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 1704 wrote to memory of 5112	1704	2024-10-04_d081578630a79b435f2ced4e829f6af1_cryptolocker.exe	82
PID 1704 wrote to memory of 5112	1704	2024-10-04_d081578630a79b435f2ced4e829f6af1_cryptolocker.exe	82
PID 1704 wrote to memory of 5112	1704	2024-10-04_d081578630a79b435f2ced4e829f6af1_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-10-04_d081578630a79b435f2ced4e829f6af1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-04_d081578630a79b435f2ced4e829f6af1_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1704
- 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:5112

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
39KB

MD5
1796c4a2ea0556fda666dcd4ccc4b059

SHA1
48d7475e4607608de3b849f36f43da3dfd0c3d41

SHA256
7cf3b78582d8ec25c5754725494558a1b256dcd6461627a9241c1d6ef5976cff

SHA512
167f037f558ec243f25faadd4c5823ed1c4dfdb575d19108dcd3966421cec5806cd7d9f0e98971f9486f0feee066d8e38a8cca89e7460565d110b5e24ffa86c5

Download Submit
memory/1704-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1704-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/1704-2-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/1704-3-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/1704-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/5112-26-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/5112-20-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/5112-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download