a43a013df36465494f1879543c9c8416514aa0e9949f39d5468f915e395d1f05

Analysis

max time kernel
149s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
19/09/2024, 02:48

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General

Target

2024-09-19_555a08a3ed9cd87ac1efbae0d04db306_cryptolocker.exe
Size

81KB
MD5

555a08a3ed9cd87ac1efbae0d04db306
SHA1

9cc59098081c011132c58820509a332d3898b04d
SHA256

a43a013df36465494f1879543c9c8416514aa0e9949f39d5468f915e395d1f05
SHA512

33f13839cf53e9b95e3c637690372af9fc959f62db168b9dc674e0aee9d713a6ea9d4d8a9dc5efe59fd7ce4252b69a63565d3562a57d0a036783d6266910bb3f
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOA+YSafiPuqdQ:T6a+rdOOtEvwDpjNcB

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-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	2024-09-19_555a08a3ed9cd87ac1efbae0d04db306_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1584	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/220-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000900000002340c-12.dat	upx
behavioral2/memory/220-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1584-25-0x0000000000500000-0x0000000000510000-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	2024-09-19_555a08a3ed9cd87ac1efbae0d04db306_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 220 wrote to memory of 1584	220	2024-09-19_555a08a3ed9cd87ac1efbae0d04db306_cryptolocker.exe	82
PID 220 wrote to memory of 1584	220	2024-09-19_555a08a3ed9cd87ac1efbae0d04db306_cryptolocker.exe	82
PID 220 wrote to memory of 1584	220	2024-09-19_555a08a3ed9cd87ac1efbae0d04db306_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-09-19_555a08a3ed9cd87ac1efbae0d04db306_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-19_555a08a3ed9cd87ac1efbae0d04db306_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:220
- 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:1584

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
81KB

MD5
be7e88028a88d15583bd835785d81c64

SHA1
2ff2e2bbc0d282e9b376380a1b8430aff67ecb22

SHA256
a9f7754321c53db0fcb49114fbcd9a2cfbeda20f5b3a3e5010a7cfcdfe3308b0

SHA512
5ede1d47b5d8d8493a6488340eb2f3d34f529fe703563a1edd71a0763fd4560f54b1ccba8f4ed4f3386c1832f87bce9045582bfa143483bcf1acb02f3733ea78

Download Submit
memory/220-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/220-1-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/220-2-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/220-3-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/220-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1584-19-0x0000000001FE0000-0x0000000001FE6000-memory.dmp

Filesize
24KB

Download
memory/1584-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download