63cd301c337fb664f74f2d9b1c2073e02e0a1923e2b930505639e4ce5b1bcf02

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
18-10-2024 06:27

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General

Target

2024-10-18_5ef65f56654d34ae9624cfaeac433d93_cryptolocker.exe
Size

40KB
MD5

5ef65f56654d34ae9624cfaeac433d93
SHA1

55a3f36ac18a9857b1653a1a606e9f461cc4e744
SHA256

63cd301c337fb664f74f2d9b1c2073e02e0a1923e2b930505639e4ce5b1bcf02
SHA512

38356523e957458e0136465f2aea4818c5b374c0a22e456590c679c70504b96048b80bd6b2d2092210e01152f5f60f390e6773fb38a8ca9afb040b430e82f0c7
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYaB02:qDdFJy3QMOtEvwDpjjWMl7TdC2

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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	2024-10-18_5ef65f56654d34ae9624cfaeac433d93_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3336	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3884-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000c000000023b10-13.dat	upx
behavioral2/memory/3884-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/3336-26-0x0000000000500000-0x0000000000510000-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	2024-10-18_5ef65f56654d34ae9624cfaeac433d93_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 3884 wrote to memory of 3336	3884	2024-10-18_5ef65f56654d34ae9624cfaeac433d93_cryptolocker.exe	85
PID 3884 wrote to memory of 3336	3884	2024-10-18_5ef65f56654d34ae9624cfaeac433d93_cryptolocker.exe	85
PID 3884 wrote to memory of 3336	3884	2024-10-18_5ef65f56654d34ae9624cfaeac433d93_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-10-18_5ef65f56654d34ae9624cfaeac433d93_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-18_5ef65f56654d34ae9624cfaeac433d93_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3884
- 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:3336

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
50f52702d1de45c88edc700524cdcdd0

SHA1
a592db15749b71e48a9a94a1fc9a2e95239b6a52

SHA256
4a2d13a82b35b74b913169ee44dc1e285fb7a3f12a9546320999e5f58ec2c329

SHA512
6021bfbe4b41aea334cace41daad6afdadce78813d4f44b7874bf4affd40ea3c207d0809f8ccf2c7df395935a35dc03196aeac29399ea7af20a0036f0c6765f7

Download Submit
memory/3336-19-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/3336-20-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/3336-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3884-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3884-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3884-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3884-3-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/3884-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download