a84d739a546432e9df38a8ee2f38968ba5ebf925e4b56afd845945706a6af0db

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 12:30

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General

Target

2024-09-05_5ab35b8dffa76763b79c80a8240002ea_cryptolocker.exe
Size

68KB
MD5

5ab35b8dffa76763b79c80a8240002ea
SHA1

5bf3c81fee0430f218f08b014177da172a2f1380
SHA256

a84d739a546432e9df38a8ee2f38968ba5ebf925e4b56afd845945706a6af0db
SHA512

fd4c27ab6318579d6f3451b15e04c3ecd90203f6c037a003a46e202db9a4d3a40601898ef981859d351821eacf07703a5b9d62b243daddea136faa7190705740
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjYibAoQRZ:1nK6a+qdOOtEvwDpjU

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	2024-09-05_5ab35b8dffa76763b79c80a8240002ea_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4876	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1516-0-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/files/0x0009000000023487-13.dat	upx
behavioral2/memory/1516-17-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/memory/4876-26-0x0000000000500000-0x000000000050F311-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	2024-09-05_5ab35b8dffa76763b79c80a8240002ea_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 1516 wrote to memory of 4876	1516	2024-09-05_5ab35b8dffa76763b79c80a8240002ea_cryptolocker.exe	84
PID 1516 wrote to memory of 4876	1516	2024-09-05_5ab35b8dffa76763b79c80a8240002ea_cryptolocker.exe	84
PID 1516 wrote to memory of 4876	1516	2024-09-05_5ab35b8dffa76763b79c80a8240002ea_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-09-05_5ab35b8dffa76763b79c80a8240002ea_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-05_5ab35b8dffa76763b79c80a8240002ea_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1516
- 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:4876

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
69KB

MD5
ffd840b48bb620573e914d2f6b7c2010

SHA1
cf0b08fe767673fdeeef3328db16161396ca5374

SHA256
f6bec8bd324db8b08d7207bd56ef1df5efb47af6c692688731fb65594760cefd

SHA512
1205acdc945d958a7464e1b90233cc449c1b4cdd09f44cbefd18a33716ae610c01fddfbb846bf73f7972e9ee747838d57df416bd473fc1d784891b7844403bde

Download Submit
memory/1516-0-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/1516-1-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/1516-2-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/1516-3-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/1516-17-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/4876-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4876-21-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4876-26-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download