b6b64bad036dae1bb5513351d9e1d718b3bcbf3d4e7191756147f26a299b622f

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
19/09/2024, 03:47

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General

Target

2024-09-19_fd5bc9c73191281bd2cd3b6a939b12ec_cryptolocker.exe
Size

40KB
MD5

fd5bc9c73191281bd2cd3b6a939b12ec
SHA1

fb0c931d9b96b0ce4d58c8b76010cc8930a0d31e
SHA256

b6b64bad036dae1bb5513351d9e1d718b3bcbf3d4e7191756147f26a299b622f
SHA512

0b1f42b8718a1448977575eb4baa9260b864b94e9b5cd2584106f11790aeca487f094e0a89b010c597c0ae3e1984a69efa1c254a1f687efd62b844ad7dc6924a
SSDEEP

768:qTVbxjgQNQXtckstOOtEvwDpjAaD3TUogs/VXpAPWRiQD:qTJu9cvMOtEvwDpjppVXzRV

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	2024-09-19_fd5bc9c73191281bd2cd3b6a939b12ec_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4976	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3116-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x00090000000234b6-13.dat	upx
behavioral2/memory/3116-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/4976-26-0x0000000000500000-0x000000000050F000-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_fd5bc9c73191281bd2cd3b6a939b12ec_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 3116 wrote to memory of 4976	3116	2024-09-19_fd5bc9c73191281bd2cd3b6a939b12ec_cryptolocker.exe	82
PID 3116 wrote to memory of 4976	3116	2024-09-19_fd5bc9c73191281bd2cd3b6a939b12ec_cryptolocker.exe	82
PID 3116 wrote to memory of 4976	3116	2024-09-19_fd5bc9c73191281bd2cd3b6a939b12ec_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-09-19_fd5bc9c73191281bd2cd3b6a939b12ec_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-19_fd5bc9c73191281bd2cd3b6a939b12ec_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3116
- 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:4976

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\asih.exe

Filesize
40KB

MD5
16690e706d4bad928aba9ad683138668

SHA1
e3bcc80e5da38636fab6827b7fa2283c214c38f8

SHA256
9b381ed6c4cad343142cc8ec3265aeb68bdba9fbee7d7486be83e470233000ab

SHA512
e64be657a439a9e1a264ab7339bcc391f48fb306ebd741389627bca145d8e7c0c7950a08df2a9ee9d3f6fa5d5c70818e91c6eedfe9faa7d39433dc2e395d3192

Download Submit
memory/3116-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3116-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3116-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3116-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3116-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4976-19-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/4976-25-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/4976-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download