vidar | 76d3b8781abaea750616e4993cdc85696fb12b5d0afb7ef66853f604d141758f

General

Target

build2.exe
Size

322KB
MD5

a32ee68cab7021ae6aa6e16e8b70a9b3
SHA1

22e86ec447a074098e19e3f686c373dc53aaf9f3
SHA256

76d3b8781abaea750616e4993cdc85696fb12b5d0afb7ef66853f604d141758f
SHA512

a163adf92417463344a491cce7928e3c2a2cee27684f6b5bdd7a17a532fade88fab167e98d425dd8cba49cfcd2e3f1709f986829b9b7a7e4131887882a612ae1
SSDEEP

6144:4SQDLbYaw8NPIXh+FjImhk0oV1a09pvIVrh20HpDPIXbwLvw:0D3Yj8ZDFlhkDV17Arh7BIcLvw

Score

10^/10

vidar 19 discovery spyware stealer

Malware Config

Extracted

Family

vidar

Version

2.6

Botnet

19

Attributes

profile_id
19

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:

build2.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation build2.exe
Loads dropped DLL 2 IoCs

Processes:

build2.exe

pid process

4732 build2.exe
4732 build2.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
Suspicious use of SetThreadContext 1 IoCs

Processes:

build2.exe

description pid process target process

PID 4644 set thread context of 4732 4644 build2.exe build2.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\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	build2.exe

pid	process
4732	build2.exe
4732	build2.exe

description	pid	process	target process
PID 4644 set thread context of 4732	4644	build2.exe	build2.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:

build2.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	build2.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	build2.exe

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1716 timeout.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

build2.exe

pid process

4732 build2.exe
4732 build2.exe

pid	process
1716	timeout.exe

pid	process
4732	build2.exe
4732	build2.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

build2.exebuild2.execmd.exe

description	pid	process	target process
PID 4644 wrote to memory of 4732	4644	build2.exe	build2.exe
PID 4644 wrote to memory of 4732	4644	build2.exe	build2.exe
PID 4644 wrote to memory of 4732	4644	build2.exe	build2.exe
PID 4644 wrote to memory of 4732	4644	build2.exe	build2.exe
PID 4644 wrote to memory of 4732	4644	build2.exe	build2.exe
PID 4644 wrote to memory of 4732	4644	build2.exe	build2.exe
PID 4644 wrote to memory of 4732	4644	build2.exe	build2.exe
PID 4644 wrote to memory of 4732	4644	build2.exe	build2.exe
PID 4644 wrote to memory of 4732	4644	build2.exe	build2.exe
PID 4732 wrote to memory of 4220	4732	build2.exe	cmd.exe
PID 4732 wrote to memory of 4220	4732	build2.exe	cmd.exe
PID 4732 wrote to memory of 4220	4732	build2.exe	cmd.exe
PID 4220 wrote to memory of 1716	4220	cmd.exe	timeout.exe
PID 4220 wrote to memory of 1716	4220	cmd.exe	timeout.exe
PID 4220 wrote to memory of 1716	4220	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\build2.exe
"C:\Users\Admin\AppData\Local\Temp\build2.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4644

C:\Users\Admin\AppData\Local\Temp\build2.exe
"C:\Users\Admin\AppData\Local\Temp\build2.exe"
2⤵
- Checks computer location settings
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4732

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\build2.exe" & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:4220

C:\Windows\SysWOW64\timeout.exe
timeout /t 6
4⤵
- Delays execution with timeout.exe
PID:1716

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/1716-161-0x0000000000000000-mapping.dmp

Download
memory/4220-159-0x0000000000000000-mapping.dmp

Download
memory/4644-136-0x0000000000888000-0x00000000008BB000-memory.dmp

Filesize
204KB

Download
memory/4644-137-0x0000000002210000-0x000000000226C000-memory.dmp

Filesize
368KB

Download
memory/4732-138-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/4732-139-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/4732-135-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/4732-132-0x0000000000000000-mapping.dmp

Download
memory/4732-134-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/4732-160-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/4732-133-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download

Analysis

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