vidar | d3dd1a4eff9a3371d839a9cbdcd040edb03c5ac3140e142e6bf398905a9afad7

Analysis

max time kernel
150s
max time network
155s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
21-10-2022 11:22

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General

Target

file.exe
Size

5.3MB
MD5

192a51ce49ce579f5816a8a75586e048
SHA1

f6074369b40edd8210a87b27cc0f20644def41e5
SHA256

d3dd1a4eff9a3371d839a9cbdcd040edb03c5ac3140e142e6bf398905a9afad7
SHA512

0f7ac42bd2725c65f9842af46abf1c339a153e0a2f79eb865f70bf9e214844fdaa0966374c04f4133f398272167408001d38dc26f9803ad70ad697d1b585357a
SSDEEP

98304:BN5tzNYV3fp6KqaEtnyPh+ePqMuax7E/hToelmYigzFUcu0rln0aPE0:BZRY1fp6b0Ph+eLpRYhTonYigz2gV/

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

Processes:

file.exe

description ioc process

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

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

Processes:

file.exe

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

Loads dropped DLL 2 IoCs

Processes:

file.exe

pid process

992 file.exe
992 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

pid	process
992	file.exe
992	file.exe

Themida packer 14 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral1/memory/992-55-0x0000000001320000-0x00000000021CD000-memory.dmp	themida
behavioral1/memory/992-56-0x0000000001320000-0x00000000021CD000-memory.dmp	themida
behavioral1/memory/992-58-0x0000000001320000-0x00000000021CD000-memory.dmp	themida
behavioral1/memory/992-57-0x0000000001320000-0x00000000021CD000-memory.dmp	themida
behavioral1/memory/992-60-0x0000000001320000-0x00000000021CD000-memory.dmp	themida
behavioral1/memory/992-61-0x0000000001320000-0x00000000021CD000-memory.dmp	themida
behavioral1/memory/992-62-0x0000000001320000-0x00000000021CD000-memory.dmp	themida
behavioral1/memory/992-63-0x0000000001320000-0x00000000021CD000-memory.dmp	themida
behavioral1/memory/992-65-0x0000000001320000-0x00000000021CD000-memory.dmp	themida
behavioral1/memory/992-66-0x0000000001320000-0x00000000021CD000-memory.dmp	themida
behavioral1/memory/992-67-0x0000000001320000-0x00000000021CD000-memory.dmp	themida
behavioral1/memory/992-68-0x0000000001320000-0x00000000021CD000-memory.dmp	themida
behavioral1/memory/992-69-0x0000000001320000-0x00000000021CD000-memory.dmp	themida
behavioral1/memory/992-94-0x0000000001320000-0x00000000021CD000-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

Processes:

file.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA file.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

file.exe

pid process

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

System Information Discovery
T1082

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

pid	process
992	file.exe
992	file.exe

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

Processes:

file.exe

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

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

2020 timeout.exe
Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

584 taskkill.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

file.exe

pid process

992 file.exe
992 file.exe
992 file.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 584 taskkill.exe

pid	process
2020	timeout.exe

pid	process
584	taskkill.exe

pid	process
992	file.exe
992	file.exe
992	file.exe

description	pid	process
Token: SeDebugPrivilege	584	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

file.execmd.exe

description	pid	process	target process
PID 992 wrote to memory of 1080	992	file.exe	cmd.exe
PID 992 wrote to memory of 1080	992	file.exe	cmd.exe
PID 992 wrote to memory of 1080	992	file.exe	cmd.exe
PID 992 wrote to memory of 1080	992	file.exe	cmd.exe
PID 1080 wrote to memory of 584	1080	cmd.exe	taskkill.exe
PID 1080 wrote to memory of 584	1080	cmd.exe	taskkill.exe
PID 1080 wrote to memory of 584	1080	cmd.exe	taskkill.exe
PID 1080 wrote to memory of 584	1080	cmd.exe	taskkill.exe
PID 1080 wrote to memory of 2020	1080	cmd.exe	timeout.exe
PID 1080 wrote to memory of 2020	1080	cmd.exe	timeout.exe
PID 1080 wrote to memory of 2020	1080	cmd.exe	timeout.exe
PID 1080 wrote to memory of 2020	1080	cmd.exe	timeout.exe

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
- 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:992

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" àBV/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:1080

C:\Windows\SysWOW64\taskkill.exe
taskkill /im file.exe /f
3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:584

C:\Windows\SysWOW64\timeout.exe
timeout /t 6
3⤵
- Delays execution with timeout.exe
PID:2020

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

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Downloads

\ProgramData\mozglue.dll
Filesize
593KB

MD5
c8fd9be83bc728cc04beffafc2907fe9

SHA1
95ab9f701e0024cedfbd312bcfe4e726744c4f2e

SHA256
ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

SHA512
fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

Download Submit
\ProgramData\nss3.dll
Filesize
2.0MB

MD5
1cc453cdf74f31e4d913ff9c10acdde2

SHA1
6e85eae544d6e965f15fa5c39700fa7202f3aafe

SHA256
ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

SHA512
dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

Download Submit
memory/584-92-0x0000000000000000-mapping.dmp

Download
memory/992-60-0x0000000001320000-0x00000000021CD000-memory.dmp

Filesize
14.7MB

Download
memory/992-68-0x0000000001320000-0x00000000021CD000-memory.dmp

Filesize
14.7MB

Download
memory/992-59-0x00000000778E0000-0x0000000077A60000-memory.dmp

Filesize
1.5MB

Download
memory/992-54-0x0000000076561000-0x0000000076563000-memory.dmp

Filesize
8KB

Download
memory/992-61-0x0000000001320000-0x00000000021CD000-memory.dmp

Filesize
14.7MB

Download
memory/992-62-0x0000000001320000-0x00000000021CD000-memory.dmp

Filesize
14.7MB

Download
memory/992-64-0x00000000778E0000-0x0000000077A60000-memory.dmp

Filesize
1.5MB

Download
memory/992-63-0x0000000001320000-0x00000000021CD000-memory.dmp

Filesize
14.7MB

Download
memory/992-65-0x0000000001320000-0x00000000021CD000-memory.dmp

Filesize
14.7MB

Download
memory/992-66-0x0000000001320000-0x00000000021CD000-memory.dmp

Filesize
14.7MB

Download
memory/992-67-0x0000000001320000-0x00000000021CD000-memory.dmp

Filesize
14.7MB

Download
memory/992-57-0x0000000001320000-0x00000000021CD000-memory.dmp

Filesize
14.7MB

Download
memory/992-69-0x0000000001320000-0x00000000021CD000-memory.dmp

Filesize
14.7MB

Download
memory/992-70-0x00000000778E0000-0x0000000077A60000-memory.dmp

Filesize
1.5MB

Download
memory/992-71-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/992-58-0x0000000001320000-0x00000000021CD000-memory.dmp

Filesize
14.7MB

Download
memory/992-56-0x0000000001320000-0x00000000021CD000-memory.dmp

Filesize
14.7MB

Download
memory/992-95-0x00000000778E0000-0x0000000077A60000-memory.dmp

Filesize
1.5MB

Download
memory/992-55-0x0000000001320000-0x00000000021CD000-memory.dmp

Filesize
14.7MB

Download
memory/992-94-0x0000000001320000-0x00000000021CD000-memory.dmp

Filesize
14.7MB

Download
memory/1080-91-0x0000000000000000-mapping.dmp

Download
memory/2020-93-0x0000000000000000-mapping.dmp

Download