vidar | 6ed5e19aac6c1cf5f1d2cd08f1db7fec2f1455fc79a9ddaa7cc45a8ce43a9fbe

Analysis

max time kernel
90s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
17-10-2022 09:07

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General

Target

file.exe
Size

3.2MB
MD5

bc39def3c5716eb76d994fe4b7e597fb
SHA1

bdc1941fca9620d4eabbb1aa6fb1dc8862a130bd
SHA256

6ed5e19aac6c1cf5f1d2cd08f1db7fec2f1455fc79a9ddaa7cc45a8ce43a9fbe
SHA512

83d40fc0ad933004f1990b22bc300b942dabfd2c7370e9e4e57192bf154404ea6fac4abca93807f0e60af5dd1bd7dd57da8ed45990ae3dccb5f52d23f8329e97
SSDEEP

98304:THZ2fHyQEY0JIi4VaLGGteqp8OH7FCUGn:THIHKGi4VqGG9XFXm

Score

10^/10

vidar 1679 discovery evasion spyware stealer themida trojan

Malware Config

Extracted

Family

vidar

Version

Botnet

1679

http://138.201.90.120:80

Attributes

profile_id
1679

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	file.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	file.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	file.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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	file.exe

Loads dropped DLL 2 IoCs

pid	Process
2264	file.exe
2264	file.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Themida packer 9 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral2/memory/2264-132-0x0000000000530000-0x0000000000E58000-memory.dmp	themida
behavioral2/memory/2264-133-0x0000000000530000-0x0000000000E58000-memory.dmp	themida
behavioral2/memory/2264-135-0x0000000000530000-0x0000000000E58000-memory.dmp	themida
behavioral2/memory/2264-136-0x0000000000530000-0x0000000000E58000-memory.dmp	themida
behavioral2/memory/2264-137-0x0000000000530000-0x0000000000E58000-memory.dmp	themida
behavioral2/memory/2264-138-0x0000000000530000-0x0000000000E58000-memory.dmp	themida
behavioral2/memory/2264-139-0x0000000000530000-0x0000000000E58000-memory.dmp	themida
behavioral2/memory/2264-140-0x0000000000530000-0x0000000000E58000-memory.dmp	themida
behavioral2/memory/2264-164-0x0000000000530000-0x0000000000E58000-memory.dmp	themida

Accesses 2FA software files, possible credential harvesting 2 TTPs
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

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	file.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2264	file.exe

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	file.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	file.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2232	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
772	taskkill.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2264	file.exe
2264	file.exe
2264	file.exe
2264	file.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	772	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2264 wrote to memory of 4932	2264	file.exe	89
PID 2264 wrote to memory of 4932	2264	file.exe	89
PID 2264 wrote to memory of 4932	2264	file.exe	89
PID 4932 wrote to memory of 772	4932	cmd.exe	91
PID 4932 wrote to memory of 772	4932	cmd.exe	91
PID 4932 wrote to memory of 772	4932	cmd.exe	91
PID 4932 wrote to memory of 2232	4932	cmd.exe	92
PID 4932 wrote to memory of 2232	4932	cmd.exe	92
PID 4932 wrote to memory of 2232	4932	cmd.exe	92

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks computer location settings
- Loads dropped DLL
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2264
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" 8ý/c taskkill /im file.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\file.exe" & del C:\PrograData\*.dll & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4932
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im file.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:772
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:2232

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\mozglue.dll

Filesize
593KB

MD5
c8fd9be83bc728cc04beffafc2907fe9

SHA1
95ab9f701e0024cedfbd312bcfe4e726744c4f2e

SHA256
ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

SHA512
fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

Download Submit
C:\ProgramData\nss3.dll

Filesize
2.0MB

MD5
1cc453cdf74f31e4d913ff9c10acdde2

SHA1
6e85eae544d6e965f15fa5c39700fa7202f3aafe

SHA256
ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

SHA512
dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

Download Submit
memory/772-162-0x0000000000000000-mapping.dmp

Download
memory/2232-163-0x0000000000000000-mapping.dmp

Download
memory/2264-140-0x0000000000530000-0x0000000000E58000-memory.dmp

Filesize
9.2MB

Download
memory/2264-137-0x0000000000530000-0x0000000000E58000-memory.dmp

Filesize
9.2MB

Download
memory/2264-138-0x0000000000530000-0x0000000000E58000-memory.dmp

Filesize
9.2MB

Download
memory/2264-139-0x0000000000530000-0x0000000000E58000-memory.dmp

Filesize
9.2MB

Download
memory/2264-132-0x0000000000530000-0x0000000000E58000-memory.dmp

Filesize
9.2MB

Download
memory/2264-141-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/2264-136-0x0000000000530000-0x0000000000E58000-memory.dmp

Filesize
9.2MB

Download
memory/2264-135-0x0000000000530000-0x0000000000E58000-memory.dmp

Filesize
9.2MB

Download
memory/2264-134-0x00000000777C0000-0x0000000077963000-memory.dmp

Filesize
1.6MB

Download
memory/2264-133-0x0000000000530000-0x0000000000E58000-memory.dmp

Filesize
9.2MB

Download
memory/2264-165-0x00000000777C0000-0x0000000077963000-memory.dmp

Filesize
1.6MB

Download
memory/2264-164-0x0000000000530000-0x0000000000E58000-memory.dmp

Filesize
9.2MB

Download
memory/4932-161-0x0000000000000000-mapping.dmp

Download