vidar | 0b4fccfb36c5b91de4f3141099c845d9d90a49c69497bff21bff5d00a353e9df

General

Target

file.exe
Size

285KB
MD5

b4cf648f1f4bd4cee549ae2b2d239d74
SHA1

c2481e898b10e602fe45cbb208a231dbedc52e54
SHA256

0b4fccfb36c5b91de4f3141099c845d9d90a49c69497bff21bff5d00a353e9df
SHA512

7f8f2d6e30b2a5ce51156118fe944cc33b90d010461b29d02e6588fefa113bf94334ca0faa7ef632d7945ed30b393e8087cbedc63d2b972e8fffdacb63e521b6
SSDEEP

6144:kYLyX1Y9kqfCu65aD7dGjXOXJOsRAzd89:kYeFfotMuOXSJOsRAzd8

Score

10^/10

vidar 937 discovery spyware stealer

Malware Config

Extracted

Family

vidar

Version

55.6

Botnet

937

C2

https://t.me/seclab_new

https://raw.githubusercontent.com/sebekeloytfu/simple-bash-scripts/master/calculator.sh

Attributes

profile_id
937

Signatures

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
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

Processes:

file.exe

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

Processes:

file.exe

pid process

4752 file.exe
4752 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
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
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

424 4752 WerFault.exe file.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	file.exe

pid	process
4752	file.exe
4752	file.exe

pid	pid_target	process	target process
424	4752	WerFault.exe	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

3572 timeout.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

file.exe

pid process

4752 file.exe
4752 file.exe

pid	process
3572	timeout.exe

pid	process
4752	file.exe
4752	file.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

file.execmd.exe

description	pid	process	target process
PID 4752 wrote to memory of 4644	4752	file.exe	cmd.exe
PID 4752 wrote to memory of 4644	4752	file.exe	cmd.exe
PID 4752 wrote to memory of 4644	4752	file.exe	cmd.exe
PID 4644 wrote to memory of 3572	4644	cmd.exe	timeout.exe
PID 4644 wrote to memory of 3572	4644	cmd.exe	timeout.exe
PID 4644 wrote to memory of 3572	4644	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Checks computer location settings
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4752

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\file.exe" & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:4644

C:\Windows\SysWOW64\timeout.exe
timeout /t 6
3⤵
- Delays execution with timeout.exe
PID:3572

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4752 -s 1948
2⤵
- Program crash
PID:424

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 4752 -ip 4752
1⤵
PID:3372

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

3

T1081

Discovery

Query Registry

3

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Exfiltration

Command and Control

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/3572-156-0x0000000000000000-mapping.dmp

Download
memory/4644-155-0x0000000000000000-mapping.dmp

Download
memory/4752-132-0x0000000000789000-0x00000000007B5000-memory.dmp

Filesize
176KB

Download
memory/4752-133-0x0000000002310000-0x000000000235B000-memory.dmp

Filesize
300KB

Download
memory/4752-134-0x0000000000400000-0x00000000005A3000-memory.dmp

Filesize
1.6MB

Download
memory/4752-135-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/4752-157-0x0000000000789000-0x00000000007B5000-memory.dmp

Filesize
176KB

Download
memory/4752-158-0x0000000000400000-0x00000000005A3000-memory.dmp

Filesize
1.6MB

Download

Analysis

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