bbca1f09a0d20d70dd33d1abb338f30eb7675b5fda8cb847eb7a15879a2f080b

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
13-10-2024 03:37

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General

Target

2024-10-13_59fa8b24c9f249c1d80f009caada2bcc_cryptolocker.exe
Size

88KB
MD5

59fa8b24c9f249c1d80f009caada2bcc
SHA1

753f6e0179f791401f6062a886ace2725e92d171
SHA256

bbca1f09a0d20d70dd33d1abb338f30eb7675b5fda8cb847eb7a15879a2f080b
SHA512

5eda6ca1e88424430f1b7a158f8829c7ebb55f9bfe2211ee0e84b09404a51c4ca9a54486cc883a7bea224eab8bdbd4734f475bcfbfa24c334abff6edd757efbe
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHsalR/:1nK6a+qdOOtEvwDpjo

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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	2024-10-13_59fa8b24c9f249c1d80f009caada2bcc_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1396	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2900-0-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/files/0x000a000000023bac-13.dat	upx
behavioral2/memory/2900-16-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/memory/1396-25-0x0000000000500000-0x000000000050F311-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	2024-10-13_59fa8b24c9f249c1d80f009caada2bcc_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 2900 wrote to memory of 1396	2900	2024-10-13_59fa8b24c9f249c1d80f009caada2bcc_cryptolocker.exe	85
PID 2900 wrote to memory of 1396	2900	2024-10-13_59fa8b24c9f249c1d80f009caada2bcc_cryptolocker.exe	85
PID 2900 wrote to memory of 1396	2900	2024-10-13_59fa8b24c9f249c1d80f009caada2bcc_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-10-13_59fa8b24c9f249c1d80f009caada2bcc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-13_59fa8b24c9f249c1d80f009caada2bcc_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2900
- 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:1396

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
88KB

MD5
de3a6e08910644e7120501bad882cf7b

SHA1
42d948bc51dbd96e1e09eba0b6154be13ea03c89

SHA256
fecf0f15619a697d66c9f25c13051bee00120f0663f3c77fe28111f974ccc58d

SHA512
38d2ab908b8f8840029cbecf9e64a0f7eea6a1d197d7d97940494d986be62f61961c31ce85f9cbb27a8fcb6f9dcb457ef432f714cebae2d5b5b8b7f1826f23de

Download Submit
memory/1396-25-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2900-0-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2900-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2900-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2900-8-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/2900-16-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download