43079b2c8841459cd50b363fe27a71c8f5a7e8ae583bc5a33d2429c35ada0c47

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
25/09/2024, 04:33

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General

Target

2024-09-25_8d9505dbf345b6c1b8e3002020e245a4_cryptolocker.exe
Size

39KB
MD5

8d9505dbf345b6c1b8e3002020e245a4
SHA1

6f17ee4c6fc11492bc04880252b1a09fe6906122
SHA256

43079b2c8841459cd50b363fe27a71c8f5a7e8ae583bc5a33d2429c35ada0c47
SHA512

6c86fd9ed5ff6eb6620520cad598830aa3df5c4d8f1e2ef243cdcd66325e1f42028a6ad9f36dda91b95fd7bac795c36ca67040a476576c4532e289838527eefc
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkIT+n:qDdFJy3QMOtEvwDpjjWMl7T+n

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	2024-09-25_8d9505dbf345b6c1b8e3002020e245a4_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1240	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1856-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x00090000000233eb-13.dat	upx
behavioral2/memory/1856-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1240-26-0x0000000000500000-0x0000000000510000-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	2024-09-25_8d9505dbf345b6c1b8e3002020e245a4_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 1856 wrote to memory of 1240	1856	2024-09-25_8d9505dbf345b6c1b8e3002020e245a4_cryptolocker.exe	82
PID 1856 wrote to memory of 1240	1856	2024-09-25_8d9505dbf345b6c1b8e3002020e245a4_cryptolocker.exe	82
PID 1856 wrote to memory of 1240	1856	2024-09-25_8d9505dbf345b6c1b8e3002020e245a4_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-09-25_8d9505dbf345b6c1b8e3002020e245a4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-25_8d9505dbf345b6c1b8e3002020e245a4_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1856
- 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:1240

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
39KB

MD5
d99e4721b29446de88da19571de41f93

SHA1
87b435ed201eb4bd952236c37f3a807ef8fed8f8

SHA256
0ad2b0182465e7e3fa3014f1fc018ca5587a2a62ee408f64c1dcf175c7d84756

SHA512
27d3781ee96dacb80c6af1bb1a8ba903ddb7e29300c6ede6d06339aff8453694089660d0bb71f0ec5cddc2e29ffb355b0ecb33d779d5677a51a0e0999e6331df

Download Submit
memory/1240-19-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/1240-25-0x0000000002150000-0x0000000002156000-memory.dmp

Filesize
24KB

Download
memory/1240-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1856-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1856-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/1856-2-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/1856-3-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/1856-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download