0425a05ec76c206a8f63014ba5448757e6a11249f2aeae2ae5b92e6588156e46

Analysis

max time kernel
165s
max time network
180s
platform
windows10-1703_x64
resource
win10-20220812-en
resource tags

arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system
submitted
23/09/2022, 09:07

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

exfilty.exe
Size

3.7MB
MD5

6c2add46386dbda1ac0ae2f6fda7aa75
SHA1

fd410794cea5ba3ec4d4bf34015e55a7808a43e8
SHA256

0425a05ec76c206a8f63014ba5448757e6a11249f2aeae2ae5b92e6588156e46
SHA512

f745e707e7bff8dd3bc48fbed8b6f26c430618d30a93e5f6ced7170956629c8d0aa2277efd6f640284da7c9d97aec5d52091a53c8053a812d02f4a54673a4ad4
SSDEEP

98304:pO/xf14Sko0+3hyNYLOn926VLrM7ipJBqo55C:UO0RxyNY6LrMKBqom

Score

9^/10

evasion themida trojan

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__	exfilty.exe

Checks BIOS information in registry 2 TTPs 2 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	exfilty.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	exfilty.exe

Themida packer 7 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral2/memory/2960-117-0x00007FF6E2E20000-0x00007FF6E3805000-memory.dmp	themida
behavioral2/memory/2960-116-0x00007FF6E2E20000-0x00007FF6E3805000-memory.dmp	themida
behavioral2/memory/2960-118-0x00007FF6E2E20000-0x00007FF6E3805000-memory.dmp	themida
behavioral2/memory/2960-120-0x00007FF6E2E20000-0x00007FF6E3805000-memory.dmp	themida
behavioral2/memory/2960-121-0x00007FF6E2E20000-0x00007FF6E3805000-memory.dmp	themida
behavioral2/memory/2960-128-0x00007FF6E2E20000-0x00007FF6E3805000-memory.dmp	themida
behavioral2/memory/2960-131-0x00007FF6E2E20000-0x00007FF6E3805000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	exfilty.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2960	exfilty.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2960 wrote to memory of 4100	2960	exfilty.exe	67
PID 2960 wrote to memory of 4100	2960	exfilty.exe	67
PID 4100 wrote to memory of 4872	4100	cmd.exe	70
PID 4100 wrote to memory of 4872	4100	cmd.exe	70
PID 4100 wrote to memory of 4884	4100	cmd.exe	69
PID 4100 wrote to memory of 4884	4100	cmd.exe	69
PID 4100 wrote to memory of 4612	4100	cmd.exe	68
PID 4100 wrote to memory of 4612	4100	cmd.exe	68
PID 2960 wrote to memory of 2392	2960	exfilty.exe	71
PID 2960 wrote to memory of 2392	2960	exfilty.exe	71
PID 2960 wrote to memory of 4900	2960	exfilty.exe	72
PID 2960 wrote to memory of 4900	2960	exfilty.exe	72
PID 2960 wrote to memory of 4960	2960	exfilty.exe	73
PID 2960 wrote to memory of 4960	2960	exfilty.exe	73

C:\Users\Admin\AppData\Local\Temp\exfilty.exe
"C:\Users\Admin\AppData\Local\Temp\exfilty.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of WriteProcessMemory
PID:2960
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\exfilty.exe" MD5 | find /i /v "md5" | find /i /v "certutil"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4100
- - C:\Windows\system32\find.exe
    find /i /v "certutil"
    3⤵
    PID:4612
- - C:\Windows\system32\find.exe
    find /i /v "md5"
    3⤵
    PID:4884
- - C:\Windows\system32\certutil.exe
    certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\exfilty.exe" MD5
    3⤵
    PID:4872
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c C:/You Like man :laugh: >nul 2>&1
  2⤵
  PID:2392
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c cls
  2⤵
  PID:4900
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c cls
  2⤵
  PID:4960

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

Loading Replay Monitor...

Downloads

memory/2960-129-0x00007FFE884A0000-0x00007FFE8867B000-memory.dmp

Filesize
1.9MB

Download
memory/2960-116-0x00007FF6E2E20000-0x00007FF6E3805000-memory.dmp

Filesize
9.9MB

Download
memory/2960-118-0x00007FF6E2E20000-0x00007FF6E3805000-memory.dmp

Filesize
9.9MB

Download
memory/2960-120-0x00007FF6E2E20000-0x00007FF6E3805000-memory.dmp

Filesize
9.9MB

Download
memory/2960-121-0x00007FF6E2E20000-0x00007FF6E3805000-memory.dmp

Filesize
9.9MB

Download
memory/2960-132-0x00007FFE884A0000-0x00007FFE8867B000-memory.dmp

Filesize
1.9MB

Download
memory/2960-119-0x00007FFE884A0000-0x00007FFE8867B000-memory.dmp

Filesize
1.9MB

Download
memory/2960-131-0x00007FF6E2E20000-0x00007FF6E3805000-memory.dmp

Filesize
9.9MB

Download
memory/2960-128-0x00007FF6E2E20000-0x00007FF6E3805000-memory.dmp

Filesize
9.9MB

Download
memory/2960-117-0x00007FF6E2E20000-0x00007FF6E3805000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads