b684be7ffd1269b91772c54f48532ee79db8a322c7a1861512beb66a266117f4

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
05-09-2024 12:09

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General

Target

2024-09-05_73ab1672c60249ff9b11925adb249efa_cryptolocker.exe
Size

92KB
MD5

73ab1672c60249ff9b11925adb249efa
SHA1

22aa39912696b809b8f5f1d8a3b63e546a3f4dfb
SHA256

b684be7ffd1269b91772c54f48532ee79db8a322c7a1861512beb66a266117f4
SHA512

3fc096eea46eae909febcc07a1b1e70c9c74a2db0b9556045f2ee11549400d31fa1f6f118a871f29efadc23a7b49fbf25564a9ca18cf5936da81a110805dd704
SSDEEP

1536:n6QFElP6n+g9u9cvMOtEvwDpjYYTjipvF2bx1PQAee:n6a+1SEOtEvwDpjYYvQd2PH

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	2024-09-05_73ab1672c60249ff9b11925adb249efa_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4680	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2132-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x00090000000233e8-13.dat	upx
behavioral2/memory/2132-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4680-26-0x0000000000500000-0x0000000000510000-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	2024-09-05_73ab1672c60249ff9b11925adb249efa_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 2132 wrote to memory of 4680	2132	2024-09-05_73ab1672c60249ff9b11925adb249efa_cryptolocker.exe	84
PID 2132 wrote to memory of 4680	2132	2024-09-05_73ab1672c60249ff9b11925adb249efa_cryptolocker.exe	84
PID 2132 wrote to memory of 4680	2132	2024-09-05_73ab1672c60249ff9b11925adb249efa_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-09-05_73ab1672c60249ff9b11925adb249efa_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-05_73ab1672c60249ff9b11925adb249efa_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2132
- 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:4680

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
8f4c54496327619cf50e2a4a089ffd3f

SHA1
7a02911c1a183ea93c7b3a4d7d13787e8a0eabe5

SHA256
413850caa82c85e1760cc1a8643a1c16a127c63cdac0b2817d5d093d9d82b201

SHA512
812fb9b1c76bcbd61bc2c52873f704d204ea28cf94d96443b14f4569b7af78e7b8299f1dc514c4c2efd39a0455fa3037f13cbd03fa7f49554c6a1ca98cb6821e

Download Submit
memory/2132-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2132-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/2132-2-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/2132-3-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/2132-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4680-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4680-25-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4680-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download