vidar | 828ad6fd2f0a2fdf7ee1826628156cf90e8fbc312847f47c3ea5c508977a3591

General

Target

Setup.exe
Size

1023.0MB
MD5

ef8d846aec55eddbbfa2472f9d66c2e7
SHA1

7e75e159b0a62a62d8d775b6dcd4682b59122c28
SHA256

d9a7ab42bcc0d232c84718ef977a0addc3bd7efd184970e88c6f5b85f03c27b1
SHA512

791f226bcda1ab1ec0cbaba03ea00ee56325bffbc3b0ee8dd6010d86cc4190c4e8054422e9a1fd9955b42366cb06ebedd0c49ad8b3ed13d17398d23b63fa0314
SSDEEP

196608:4+hMmu0Vro/dFqg4cF3VjgY7lEGpDltGgC891SWAo0G:41m3OMEljl7lPftGgPuDr

Score

10^/10

vidar 49bd1304650cc9c7f3f131428d9e16c2 bootkit evasion persistence spyware stealer trojan

Malware Config

Extracted

Family

vidar

Version

3.3

Botnet

49bd1304650cc9c7f3f131428d9e16c2

C2

https://steamcommunity.com/profiles/76561199492257783

https://t.me/justsometg

Attributes

profile_id_v2
49bd1304650cc9c7f3f131428d9e16c2
user_agent
Mozilla/5.0 (X11; Linux 3.5.4-1-ARCH i686; es) KHTML/4.9.1 (like Gecko) Konqueror/4.9

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

Loads dropped DLL 2 IoCs

Processes:

Setup.exe

pid process

1892 Setup.exe
1892 Setup.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
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
Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
bootkit persistence

Bootkit
T1067

Processes:

Setup.exe

description ioc process

File opened for modification \??\PhysicalDrive0 Setup.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

Setup.exe

pid process

1516 Setup.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

Setup.exe

description pid process target process

PID 1516 set thread context of 1892 1516 Setup.exe Setup.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

pid	process
1892	Setup.exe
1892	Setup.exe

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

description	ioc	process
File opened for modification	\??\PhysicalDrive0	Setup.exe

pid	process
1516	Setup.exe

description	pid	process	target process
PID 1516 set thread context of 1892	1516	Setup.exe	Setup.exe

Modifies system certificate store 2 TTPs 3 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

Processes:

Setup.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\5FB7EE0633E259DBAD0C4C9AE6D38F1A61C7DC25	Setup.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\5FB7EE0633E259DBAD0C4C9AE6D38F1A61C7DC25\Blob = 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	Setup.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\5FB7EE0633E259DBAD0C4C9AE6D38F1A61C7DC25\Blob = 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	Setup.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

Setup.exepowershell.exe

pid process

1516 Setup.exe
764 powershell.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exeSetup.exe

description pid process

Token: SeDebugPrivilege 764 powershell.exe
Token: SeDebugPrivilege 1516 Setup.exe

pid	process
1516	Setup.exe
764	powershell.exe

description	pid	process
Token: SeDebugPrivilege	764	powershell.exe
Token: SeDebugPrivilege	1516	Setup.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

Setup.exe

description	pid	process	target process
PID 1516 wrote to memory of 764	1516	Setup.exe	powershell.exe
PID 1516 wrote to memory of 764	1516	Setup.exe	powershell.exe
PID 1516 wrote to memory of 764	1516	Setup.exe	powershell.exe
PID 1516 wrote to memory of 764	1516	Setup.exe	powershell.exe
PID 1516 wrote to memory of 1892	1516	Setup.exe	Setup.exe
PID 1516 wrote to memory of 1892	1516	Setup.exe	Setup.exe
PID 1516 wrote to memory of 1892	1516	Setup.exe	Setup.exe
PID 1516 wrote to memory of 1892	1516	Setup.exe	Setup.exe
PID 1516 wrote to memory of 1892	1516	Setup.exe	Setup.exe
PID 1516 wrote to memory of 1892	1516	Setup.exe	Setup.exe
PID 1516 wrote to memory of 1892	1516	Setup.exe	Setup.exe
PID 1516 wrote to memory of 1892	1516	Setup.exe	Setup.exe
PID 1516 wrote to memory of 1892	1516	Setup.exe	Setup.exe
PID 1516 wrote to memory of 1892	1516	Setup.exe	Setup.exe
PID 1516 wrote to memory of 1892	1516	Setup.exe	Setup.exe
PID 1516 wrote to memory of 1892	1516	Setup.exe	Setup.exe
PID 1516 wrote to memory of 1892	1516	Setup.exe	Setup.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
- Writes to the Master Boot Record (MBR)
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1516
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMQA1AA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:764
- C:\Users\Admin\AppData\Local\Temp\Setup.exe
  C:\Users\Admin\AppData\Local\Temp\Setup.exe
  2⤵
  - Loads dropped DLL
  - Modifies system certificate store
  PID:1892

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Bootkit

1

T1067

Privilege Escalation

Defense Evasion

Install Root Certificate

Modify Registry

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

Virtualization/Sandbox Evasion

1

T1497

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

Filesize
61KB

MD5
e71c8443ae0bc2e282c73faead0a6dd3

SHA1
0c110c1b01e68edfacaeae64781a37b1995fa94b

SHA256
95b0a5acc5bf70d3abdfd091d0c9f9063aa4fde65bd34dbf16786082e1992e72

SHA512
b38458c7fa2825afb72794f374827403d5946b1132e136a0ce075dfd351277cf7d957c88dc8a1e4adc3bcae1fa8010dae3831e268e910d517691de24326391a6

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar466B.tmp

Filesize
161KB

MD5
be2bec6e8c5653136d3e72fe53c98aa3

SHA1
a8182d6db17c14671c3d5766c72e58d87c0810de

SHA256
1919aab2a820642490169bdc4e88bd1189e22f83e7498bf8ebdfb62ec7d843fd

SHA512
0d1424ccdf0d53faf3f4e13d534e12f22388648aa4c23edbc503801e3c96b7f73c7999b760b5bef4b5e9dd923dffe21a21889b1ce836dd428420bf0f4f5327ff

Download Submit
\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/764-65-0x0000000002550000-0x0000000002590000-memory.dmp

Filesize
256KB

Download
memory/764-64-0x0000000002550000-0x0000000002590000-memory.dmp

Filesize
256KB

Download
memory/1516-60-0x0000000003110000-0x00000000031A2000-memory.dmp

Filesize
584KB

Download
memory/1516-61-0x0000000005620000-0x0000000005660000-memory.dmp

Filesize
256KB

Download
memory/1516-80-0x0000000001200000-0x0000000001D08000-memory.dmp

Filesize
11.0MB

Download
memory/1516-67-0x0000000005620000-0x0000000005660000-memory.dmp

Filesize
256KB

Download
memory/1516-69-0x0000000006440000-0x0000000006F48000-memory.dmp

Filesize
11.0MB

Download
memory/1516-59-0x0000000000490000-0x00000000004CA000-memory.dmp

Filesize
232KB

Download
memory/1516-58-0x00000000052B0000-0x00000000053E8000-memory.dmp

Filesize
1.2MB

Download
memory/1516-57-0x0000000001200000-0x0000000001D08000-memory.dmp

Filesize
11.0MB

Download
memory/1516-54-0x0000000001200000-0x0000000001D08000-memory.dmp

Filesize
11.0MB

Download
memory/1516-56-0x0000000001200000-0x0000000001D08000-memory.dmp

Filesize
11.0MB

Download
memory/1892-75-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1892-76-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/1892-79-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/1892-74-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/1892-81-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/1892-82-0x0000000001200000-0x0000000001D08000-memory.dmp

Filesize
11.0MB

Download
memory/1892-83-0x0000000001200000-0x0000000001D08000-memory.dmp

Filesize
11.0MB

Download
memory/1892-72-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/1892-73-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/1892-135-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/1892-71-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/1892-70-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads