aae9e5b7dbcefdc4840f56aa96eea2fc3df54f7ac29b46061054c659d9be351a

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
08/09/2024, 21:24

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General

Target

2024-09-08_b98c65e12d13e4105122023b30105594_cryptolocker.exe
Size

39KB
MD5

b98c65e12d13e4105122023b30105594
SHA1

91bd77c8885f786c141093871665addeeceac353
SHA256

aae9e5b7dbcefdc4840f56aa96eea2fc3df54f7ac29b46061054c659d9be351a
SHA512

bfdb700f68e7a6ce63d6331d9d06c40acf3230fca5e01d022a593b65b354a41c2e446ea7ca0aebf5f30a06231632fab57025215e97240048fb68a05dd0fde637
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITz:qDdFJy3QMOtEvwDpjjWMl7Tz

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-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	2024-09-08_b98c65e12d13e4105122023b30105594_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1272	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1940-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0008000000023406-13.dat	upx
behavioral2/memory/1940-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1272-26-0x0000000000500000-0x0000000000510000-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	2024-09-08_b98c65e12d13e4105122023b30105594_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 1940 wrote to memory of 1272	1940	2024-09-08_b98c65e12d13e4105122023b30105594_cryptolocker.exe	85
PID 1940 wrote to memory of 1272	1940	2024-09-08_b98c65e12d13e4105122023b30105594_cryptolocker.exe	85
PID 1940 wrote to memory of 1272	1940	2024-09-08_b98c65e12d13e4105122023b30105594_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-09-08_b98c65e12d13e4105122023b30105594_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-08_b98c65e12d13e4105122023b30105594_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1940
- 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:1272

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
40KB

MD5
2613ba0a9afc19f224d10a3637ae9605

SHA1
e1cf975d3261c5ddd163568f92beb07025d8c5d9

SHA256
929419f61bd6c9ec700b25c1e792a8ba54616222810f264f9e870861a97213a5

SHA512
36f0b3f9fa5fd9087650d1ee64fe4fb87ba6b0a5f1141a0233f142189cc55562511fde6f2f948d24806a26fbe0adbab6244b85715619df87d5ce2ac817d53d70

Download Submit
memory/1272-25-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1272-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1272-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1940-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1940-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/1940-2-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/1940-3-0x0000000000540000-0x0000000000546000-memory.dmp

Filesize
24KB

Download
memory/1940-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download