vidar | f09c16eea97b9e4733ad58653a92b7f4a1ce00556a91ca83d2013153f6ff0e59

Resubmissions

11-09-2022 13:26

220911-qpvgrsbfc3 10

11-09-2022 12:47

220911-p1dsqabeh4 10

Analysis

max time kernel
1786s
max time network
1802s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
11-09-2022 13:26

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

Setup.exe
Size

370.9MB
MD5

caceb6578e7a4d3011ea97c9d1a693c0
SHA1

9d161e2ec7ecad49fed29e43fd8b04afad11e11d
SHA256

f09c16eea97b9e4733ad58653a92b7f4a1ce00556a91ca83d2013153f6ff0e59
SHA512

5200fb2d9a7654145977e1fbba6a9a77ba026e50523614111a0bfdd0a1eb63043546ee90ec38774aaeeeefdb8fd71e5c9be24d8463fc9bd540b3c15eca49fcdd
SSDEEP

98304:PSZWVxMgSBX6E1BwA26/JQtm111+kZNyLwd/nM2Stzv//PK3cS6i7zsnBW:qW2Hz726xQUakZNy8VMDVv/cr68ABW

Score

10^/10

vidar 1281 evasion stealer themida trojan

Malware Config

Extracted

Family

vidar

Version

53.3

Botnet

1281

http://185.53.46.199:80

http://77.75.230.119:80

http://5.252.23.43:80

Attributes

profile_id
1281

Signatures

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Processes:

Setup.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ Setup.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	Setup.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

Processes:

Setup.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	Setup.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Setup.exe

Themida packer 8 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral1/memory/896-55-0x0000000000A70000-0x00000000016DE000-memory.dmp	themida
behavioral1/memory/896-60-0x0000000000A70000-0x00000000016DE000-memory.dmp	themida
behavioral1/memory/896-61-0x0000000000A70000-0x00000000016DE000-memory.dmp	themida
behavioral1/memory/896-62-0x0000000000A70000-0x00000000016DE000-memory.dmp	themida
behavioral1/memory/896-63-0x0000000000A70000-0x00000000016DE000-memory.dmp	themida
behavioral1/memory/896-65-0x0000000000A70000-0x00000000016DE000-memory.dmp	themida
behavioral1/memory/896-66-0x0000000000A70000-0x00000000016DE000-memory.dmp	themida
behavioral1/memory/896-67-0x0000000000A70000-0x00000000016DE000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

Setup.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA Setup.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

Setup.exe

pid process

896 Setup.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

Setup.exe

pid process

896 Setup.exe
896 Setup.exe

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

pid	process
896	Setup.exe

pid	process
896	Setup.exe
896	Setup.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

AUDIODG.EXE

description	pid	process
Token: 33	1752	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	1752	AUDIODG.EXE
Token: 33	1752	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	1752	AUDIODG.EXE

C:\Users\Admin\AppData\Local\Temp\Setup.exe
"C:\Users\Admin\AppData\Local\Temp\Setup.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 behavior: EnumeratesProcesses
PID:896

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
1⤵
PID:1380

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x408
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1752

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/896-54-0x0000000075B41000-0x0000000075B43000-memory.dmp

Filesize
8KB

Download
memory/896-55-0x0000000000A70000-0x00000000016DE000-memory.dmp

Filesize
12.4MB

Download
memory/896-60-0x0000000000A70000-0x00000000016DE000-memory.dmp

Filesize
12.4MB

Download
memory/896-61-0x0000000000A70000-0x00000000016DE000-memory.dmp

Filesize
12.4MB

Download
memory/896-62-0x0000000000A70000-0x00000000016DE000-memory.dmp

Filesize
12.4MB

Download
memory/896-63-0x0000000000A70000-0x00000000016DE000-memory.dmp

Filesize
12.4MB

Download
memory/896-64-0x00000000778D0000-0x0000000077A50000-memory.dmp

Filesize
1.5MB

Download
memory/896-65-0x0000000000A70000-0x00000000016DE000-memory.dmp

Filesize
12.4MB

Download
memory/896-66-0x0000000000A70000-0x00000000016DE000-memory.dmp

Filesize
12.4MB

Download
memory/896-67-0x0000000000A70000-0x00000000016DE000-memory.dmp

Filesize
12.4MB

Download
memory/1380-68-0x000007FEFBF71000-0x000007FEFBF73000-memory.dmp

Filesize
8KB

Download