a223355e8646a85fdf3847b4fd9494f3a246efbbdd8b5d0b11cc503a16edc2be

Analysis

max time kernel
298s
max time network
331s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
27/11/2022, 15:33

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General

Target

a223355e8646a85fdf3847b4fd9494f3a246efbbdd8b5d0b11cc503a16edc2be.exe
Size

512KB
MD5

3b149486b8e2ce33edfd58adab50aa2e
SHA1

e754a471b7adf1709434c9f5bff8b034a7c40bf4
SHA256

a223355e8646a85fdf3847b4fd9494f3a246efbbdd8b5d0b11cc503a16edc2be
SHA512

f56210749c39d867d9fa5cd76558f4e524770dae305eef58c5e4efde7605708ec3f946cf50c931f9feae0870b6bf16155fdb797f619cf3bcd1a146b9f5513b98
SSDEEP

12288:0+h9St2Ma70zIIc91Dwws4zruXic2O/3E4h:0+h9OY70z+warul3E4h

Score

9^/10

evasion

Malware Config

Signatures

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	a223355e8646a85fdf3847b4fd9494f3a246efbbdd8b5d0b11cc503a16edc2be.exe

Executes dropped EXE 1 IoCs

pid	Process
4376	s4776.exe

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-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation	a223355e8646a85fdf3847b4fd9494f3a246efbbdd8b5d0b11cc503a16edc2be.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer	a223355e8646a85fdf3847b4fd9494f3a246efbbdd8b5d0b11cc503a16edc2be.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	a223355e8646a85fdf3847b4fd9494f3a246efbbdd8b5d0b11cc503a16edc2be.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3164	a223355e8646a85fdf3847b4fd9494f3a246efbbdd8b5d0b11cc503a16edc2be.exe
3164	a223355e8646a85fdf3847b4fd9494f3a246efbbdd8b5d0b11cc503a16edc2be.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3164 wrote to memory of 4376	3164	a223355e8646a85fdf3847b4fd9494f3a246efbbdd8b5d0b11cc503a16edc2be.exe	80
PID 3164 wrote to memory of 4376	3164	a223355e8646a85fdf3847b4fd9494f3a246efbbdd8b5d0b11cc503a16edc2be.exe	80

C:\Users\Admin\AppData\Local\Temp\a223355e8646a85fdf3847b4fd9494f3a246efbbdd8b5d0b11cc503a16edc2be.exe
"C:\Users\Admin\AppData\Local\Temp\a223355e8646a85fdf3847b4fd9494f3a246efbbdd8b5d0b11cc503a16edc2be.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks computer location settings
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3164
- C:\Users\Admin\AppData\Local\Temp\n4776\s4776.exe
  "C:\Users\Admin\AppData\Local\Temp\n4776\s4776.exe" e89098969047c2219b5f67b7jZ+QbB/hEQyLDcZcp/70uaiBSrKT2paJJjl27BxGZvx7T8Kqr2osXQgDI7L/LxhKkE6iiEYKLC8+2B9h8GKoJP/yYp0V/v+2d2blIpWOKbD/81iNhmQLGYQCqH3qMpHSLiv4jPFuWmB+jkUTNGreGQXQ /v "C:\Users\Admin\AppData\Local\Temp\a223355e8646a85fdf3847b4fd9494f3a246efbbdd8b5d0b11cc503a16edc2be.exe"
  2⤵
  - Executes dropped EXE
  PID:4376

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\n4776\s4776.exe

Filesize
230KB

MD5
abaf13cb23de482dc944ab5b51ca3aac

SHA1
76837356db96dd56b647aba60f1adbbdc7b200fe

SHA256
b02fad5ac5234401505e1682c86f526951e8ded726687088c30987321f7c105e

SHA512
cc2aac30490511e49e1268f5df9139d176a3b849e663ad3b739e2f1cb50a6e084c465772ded5f694d5ec6f19ac40a57e5e64f7c47515f212476c20cbe9d6bce3

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C:\Users\Admin\AppData\Local\Temp\n4776\s4776.exe

Filesize
230KB

MD5
abaf13cb23de482dc944ab5b51ca3aac

SHA1
76837356db96dd56b647aba60f1adbbdc7b200fe

SHA256
b02fad5ac5234401505e1682c86f526951e8ded726687088c30987321f7c105e

SHA512
cc2aac30490511e49e1268f5df9139d176a3b849e663ad3b739e2f1cb50a6e084c465772ded5f694d5ec6f19ac40a57e5e64f7c47515f212476c20cbe9d6bce3

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