8b8dad2c17f06198db3d988b60ba48629d767a0d2c8a493f9919ac0dccb95609

Resubmissions

15-09-2022 12:22

220915-pj5vwadad7 10

11-04-2022 16:15

220411-tp8aeaahg9 9

Analysis

max time kernel
42s
max time network
45s
platform
windows7_x64
resource
win7-20220331-en
submitted
11-04-2022 16:15

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General

Target

document.lnk
Size

823B
MD5

535f612cd22942a8f831c8f08cd880b5
SHA1

b095440d2c2868cbfb0e95ec32da10dd9f2aea48
SHA256

a03ac8dc616ac88e9aca6efe1171dd962df0895935ac1df637533fe6c40a8ca8
SHA512

725e3650ae1724edf247afb5e2c809cb0d277ac887df6f9ca9f03d9386958eac7b07908e91c6cc4fe757a0ed314221d539fff29f48037c56444d8298c2820ea4

Score

9^/10

evasion

Malware Config

Signatures

Enumerates VirtualBox registry keys 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Checks BIOS information in registry 2 TTPs 3 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	rundll32.exe

Identifies Wine through registry keys 2 TTPs 1 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-594401021-1341801952-2355885667-1000\SOFTWARE\Wine	rundll32.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
1004	rundll32.exe
1004	rundll32.exe
1004	rundll32.exe
1004	rundll32.exe
1004	rundll32.exe
1004	rundll32.exe
1004	rundll32.exe
1004	rundll32.exe
1004	rundll32.exe
1004	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1544 wrote to memory of 1772	1544	cmd.exe	29
PID 1544 wrote to memory of 1772	1544	cmd.exe	29
PID 1544 wrote to memory of 1772	1544	cmd.exe	29
PID 1772 wrote to memory of 1004	1772	cmd.exe	30
PID 1772 wrote to memory of 1004	1772	cmd.exe	30
PID 1772 wrote to memory of 1004	1772	cmd.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\document.lnk
1⤵
- Suspicious use of WriteProcessMemory
PID:1544
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start rundll32 vil.dll,IternalJob
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1772
- - C:\Windows\system32\rundll32.exe
    rundll32 vil.dll,IternalJob
    3⤵
    - Checks BIOS information in registry
    - Identifies Wine through registry keys
    - Suspicious behavior: EnumeratesProcesses
    PID:1004

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

Replay Monitor

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Downloads

memory/1544-54-0x000007FEFC131000-0x000007FEFC133000-memory.dmp

Filesize
8KB

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