7d2f5baae6ae80337bd8fbc6338dd4070170eeef69094f83dd2e7cdbc3a75f5a

Analysis

max time kernel
150s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
05/10/2024, 09:56

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General

Target

2024-10-05_751db83f978ed55a5d9f8f4698e17c73_cryptolocker.exe
Size

43KB
MD5

751db83f978ed55a5d9f8f4698e17c73
SHA1

fee6739a4b3073a688a87d90af37781954db9ab7
SHA256

7d2f5baae6ae80337bd8fbc6338dd4070170eeef69094f83dd2e7cdbc3a75f5a
SHA512

8b4db1c2ce1bc77d7d15e62eea19746118ba9e0c087742bb29946357b4cb7a50fe3f032a617689ae26d4337cf6ac9f0effec06ba382ea1a0a85d05219e818912
SSDEEP

768:bO74zYcgT/EkdCQgpwXFXSqQXfj0xKsmHBdZt:bO6YcA/Xk3wXFXSqAJjt

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-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	2024-10-05_751db83f978ed55a5d9f8f4698e17c73_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1392	hasfj.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1612-0-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/files/0x0008000000023495-13.dat	upx
behavioral2/memory/1612-17-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/memory/1392-26-0x0000000008000000-0x000000000800F000-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	2024-10-05_751db83f978ed55a5d9f8f4698e17c73_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	hasfj.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1612 wrote to memory of 1392	1612	2024-10-05_751db83f978ed55a5d9f8f4698e17c73_cryptolocker.exe	85
PID 1612 wrote to memory of 1392	1612	2024-10-05_751db83f978ed55a5d9f8f4698e17c73_cryptolocker.exe	85
PID 1612 wrote to memory of 1392	1612	2024-10-05_751db83f978ed55a5d9f8f4698e17c73_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-10-05_751db83f978ed55a5d9f8f4698e17c73_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-05_751db83f978ed55a5d9f8f4698e17c73_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1612
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1392

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\hasfj.exe

Filesize
43KB

MD5
f76237dd65cced72a99259c3f459b724

SHA1
72d76c414fe4a726e4d9097d5052b35367dd5fd9

SHA256
df88c68649f24b2326996b6a687d010ab1367c0172f0f8e9b26da4abbb450b51

SHA512
d581f90ebec5b98245d40f1f36837d5281c10ce8c15f86c0c031464d83dfe3f86d9ddb7678ed08f1ef4bacb23e8d6fac483c594d59a35ccea76c5b83952b8c1f

Download Submit
memory/1392-20-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/1392-19-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/1392-26-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/1612-0-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/1612-1-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/1612-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/1612-3-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/1612-17-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download