5af0b5326fdc164f0bc6c4f9e10959e523b15b2fec6c882a93863e08f26041ef

Analysis

max time kernel
16s
max time network
18s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
18/08/2024, 04:05

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General

Target

Twisted.exe
Size

5.1MB
MD5

e5770eae6267ab9ba53718c9202883a9
SHA1

f70826e588182fe03f10510df41c7341c81de99c
SHA256

5af0b5326fdc164f0bc6c4f9e10959e523b15b2fec6c882a93863e08f26041ef
SHA512

8b8c94a7f18a3c2e60162396780908a419ee876ad62c5dc933db858ed335b2b1b670fe63c62b8cde416c02b9a5e191bca2eb7e972b06cfc7cfa93a93562faae5
SSDEEP

98304:J1ejTMD5b6DV596t4w/wNLAtL4dTQqq0WMZVA1H+:j+Kb6DV596BoNLTQMWQVAh

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__	Twisted.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	Twisted.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Twisted.exe

Themida packer 2 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral1/memory/1820-0-0x000000013F920000-0x000000014059D000-memory.dmp	themida
behavioral1/memory/1820-20-0x000000013F920000-0x000000014059D000-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	Twisted.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1820	Twisted.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1820 set thread context of 2424	1820	Twisted.exe	29

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1820 wrote to memory of 2424	1820	Twisted.exe	29
PID 1820 wrote to memory of 2424	1820	Twisted.exe	29
PID 1820 wrote to memory of 2424	1820	Twisted.exe	29
PID 1820 wrote to memory of 2424	1820	Twisted.exe	29
PID 1820 wrote to memory of 2424	1820	Twisted.exe	29
PID 1820 wrote to memory of 2424	1820	Twisted.exe	29
PID 1820 wrote to memory of 2424	1820	Twisted.exe	29
PID 1820 wrote to memory of 2424	1820	Twisted.exe	29
PID 1820 wrote to memory of 2424	1820	Twisted.exe	29
PID 1820 wrote to memory of 2424	1820	Twisted.exe	29
PID 1820 wrote to memory of 2424	1820	Twisted.exe	29
PID 2424 wrote to memory of 2796	2424	Taskmgr.exe	31
PID 2424 wrote to memory of 2796	2424	Taskmgr.exe	31
PID 2424 wrote to memory of 2796	2424	Taskmgr.exe	31

C:\Users\Admin\AppData\Local\Temp\Twisted.exe
"C:\Users\Admin\AppData\Local\Temp\Twisted.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 SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1820
- C:\Windows\System32\Taskmgr.exe
  "C:\Windows\System32\Taskmgr.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2424
- - C:\Windows\system32\WerFault.exe
    C:\Windows\system32\WerFault.exe -u -p 2424 -s 112
    3⤵
    PID:2796

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

memory/1820-20-0x000000013F920000-0x000000014059D000-memory.dmp

Filesize
12.5MB

Download
memory/1820-1-0x00000000775F0000-0x00000000775F2000-memory.dmp

Filesize
8KB

Download
memory/1820-0-0x000000013F920000-0x000000014059D000-memory.dmp

Filesize
12.5MB

Download
memory/2424-8-0x0000000140000000-0x000000014038B000-memory.dmp

Filesize
3.5MB

Download
memory/2424-12-0x0000000140000000-0x000000014038B000-memory.dmp

Filesize
3.5MB

Download
memory/2424-10-0x0000000140000000-0x000000014038B000-memory.dmp

Filesize
3.5MB

Download
memory/2424-2-0x0000000140000000-0x000000014038B000-memory.dmp

Filesize
3.5MB

Download
memory/2424-18-0x0000000140000000-0x000000014038B000-memory.dmp

Filesize
3.5MB

Download
memory/2424-16-0x000007FFFFFDE000-0x000007FFFFFDF000-memory.dmp

Filesize
4KB

Download
memory/2424-14-0x0000000140000000-0x000000014038B000-memory.dmp

Filesize
3.5MB

Download
memory/2424-6-0x0000000140000000-0x000000014038B000-memory.dmp

Filesize
3.5MB

Download
memory/2424-4-0x0000000140000000-0x000000014038B000-memory.dmp

Filesize
3.5MB

Download
memory/2424-22-0x0000000140000000-0x000000014038B000-memory.dmp

Filesize
3.5MB

Download
memory/2424-23-0x00000000775A0000-0x0000000077749000-memory.dmp

Filesize
1.7MB

Download
memory/2424-24-0x00000000775A0000-0x0000000077749000-memory.dmp

Filesize
1.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads