vidar | ceea0457f178b5e19d8ef1aa7c7f7b5ce5e3fcc7f48b0f1ac5da39ba290819dc

General

Target

a.exe
Size

6.1MB
MD5

4864a55cff27f686023456a22371e790
SHA1

6ed30c0371fe167d38411bfa6d720fcdcacc4f4c
SHA256

08c7fb6067acc8ac207d28ab616c9ea5bc0d394956455d6a3eecb73f8010f7a2
SHA512

4bd3a16435cca6ce7a7aa829eb967619a8b7c02598474e634442cffc55935870d54d844a04496bf9c7e8c29c40fae59ac6eb39c8550c091d06a28211491d0bfb
SSDEEP

98304:VZQIM+/nv/CDoAkYwpAa5ge1zZ/jtdZwUkQ:bJCKlA2VKUz

Score

10^/10

vidar da1105e7cee8ade4acd1a4dc0b47dbbe credential_access discovery persistence spyware stealer

Malware Config

Extracted

Family

vidar

Version

11

Botnet

da1105e7cee8ade4acd1a4dc0b47dbbe

C2

https://steamcommunity.com/profiles/76561199780418869

https://t.me/ae5ed

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:130.0) Gecko/20100101 Firefox/130.0

Signatures

Detect Vidar Stealer 18 IoCs

stealer

resource	yara_rule
behavioral4/memory/4800-7-0x0000000000A30000-0x0000000000CA6000-memory.dmp	family_vidar_v7
behavioral4/memory/3588-8-0x0000000010000000-0x0000000010419000-memory.dmp	family_vidar_v7
behavioral4/memory/3588-6-0x0000000010000000-0x0000000010419000-memory.dmp	family_vidar_v7
behavioral4/memory/4800-12-0x0000000000A30000-0x0000000000CA6000-memory.dmp	family_vidar_v7
behavioral4/memory/3588-13-0x0000000010000000-0x0000000010419000-memory.dmp	family_vidar_v7
behavioral4/memory/4800-16-0x0000000000A30000-0x0000000000CA6000-memory.dmp	family_vidar_v7
behavioral4/memory/4800-25-0x0000000000A30000-0x0000000000CA6000-memory.dmp	family_vidar_v7
behavioral4/memory/4800-26-0x0000000000A30000-0x0000000000CA6000-memory.dmp	family_vidar_v7
behavioral4/memory/4800-42-0x0000000000A30000-0x0000000000CA6000-memory.dmp	family_vidar_v7
behavioral4/memory/4800-43-0x0000000000A30000-0x0000000000CA6000-memory.dmp	family_vidar_v7
behavioral4/memory/4800-59-0x0000000000A30000-0x0000000000CA6000-memory.dmp	family_vidar_v7
behavioral4/memory/4800-60-0x0000000000A30000-0x0000000000CA6000-memory.dmp	family_vidar_v7
behavioral4/memory/4800-82-0x0000000000A30000-0x0000000000CA6000-memory.dmp	family_vidar_v7
behavioral4/memory/4800-83-0x0000000000A30000-0x0000000000CA6000-memory.dmp	family_vidar_v7
behavioral4/memory/4800-90-0x0000000000A30000-0x0000000000CA6000-memory.dmp	family_vidar_v7
behavioral4/memory/4800-91-0x0000000000A30000-0x0000000000CA6000-memory.dmp	family_vidar_v7
behavioral4/memory/4800-92-0x0000000000A30000-0x0000000000CA6000-memory.dmp	family_vidar_v7
behavioral4/memory/4800-94-0x0000000000A30000-0x0000000000CA6000-memory.dmp	family_vidar_v7

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Downloads MZ/PE file

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-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	a.exe

Loads dropped DLL 2 IoCs

pid	Process
4800	a.exe
4800	a.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003
Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

Credentials In Files
T1552.001
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\*UpdaterCisco = "rundll32.exe C:\\Users\\Admin\\Documents\\CiscoUpdater000_PARTIAL.dll,EntryPoint"	reg.exe

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
Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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

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

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1260	timeout.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4800	a.exe
4800	a.exe
4800	a.exe
4800	a.exe
4800	a.exe
4800	a.exe
4800	a.exe
4800	a.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 3588 wrote to memory of 4800	3588	a.exe	87
PID 3588 wrote to memory of 4800	3588	a.exe	87
PID 3588 wrote to memory of 4800	3588	a.exe	87
PID 3588 wrote to memory of 4800	3588	a.exe	87
PID 3588 wrote to memory of 4800	3588	a.exe	87
PID 3588 wrote to memory of 4640	3588	a.exe	90
PID 3588 wrote to memory of 4640	3588	a.exe	90
PID 3588 wrote to memory of 4640	3588	a.exe	90
PID 4640 wrote to memory of 4428	4640	cmd.exe	92
PID 4640 wrote to memory of 4428	4640	cmd.exe	92
PID 4640 wrote to memory of 4428	4640	cmd.exe	92
PID 4800 wrote to memory of 4312	4800	a.exe	93
PID 4800 wrote to memory of 4312	4800	a.exe	93
PID 4800 wrote to memory of 4312	4800	a.exe	93
PID 4312 wrote to memory of 1260	4312	cmd.exe	95
PID 4312 wrote to memory of 1260	4312	cmd.exe	95
PID 4312 wrote to memory of 1260	4312	cmd.exe	95

C:\Users\Admin\AppData\Local\Temp\a.exe
"C:\Users\Admin\AppData\Local\Temp\a.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3588
- C:\Users\Admin\AppData\Local\Temp\a.exe
  "C:\Users\Admin\AppData\Local\Temp\a.exe"
  2⤵
  - Checks computer location settings
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4800
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\EGIDAAFIEHIE" & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4312
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:1260
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /C reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "*UpdaterCisco" /t REG_SZ /d "rundll32.exe C:\Users\Admin\Documents\CiscoUpdater000_PARTIAL.dll",EntryPoint /f & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4640
- - C:\Windows\SysWOW64\reg.exe
    reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "*UpdaterCisco" /t REG_SZ /d "rundll32.exe C:\Users\Admin\Documents\CiscoUpdater000_PARTIAL.dll",EntryPoint /f
    3⤵
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    PID:4428

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

4

T1552

Credentials In Files

4

T1552.001

Discovery

Browser Information Discovery

Query Registry

System Information Discovery

3

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

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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/3588-6-0x0000000010000000-0x0000000010419000-memory.dmp

Filesize
4.1MB

Download
memory/3588-0-0x0000000010000000-0x0000000010419000-memory.dmp

Filesize
4.1MB

Download
memory/3588-5-0x0000000010000000-0x0000000010419000-memory.dmp

Filesize
4.1MB

Download
memory/3588-4-0x0000000010000000-0x0000000010419000-memory.dmp

Filesize
4.1MB

Download
memory/3588-8-0x0000000010000000-0x0000000010419000-memory.dmp

Filesize
4.1MB

Download
memory/3588-1-0x000000001013C000-0x000000001015A000-memory.dmp

Filesize
120KB

Download
memory/3588-2-0x0000000010000000-0x0000000010419000-memory.dmp

Filesize
4.1MB

Download
memory/3588-13-0x0000000010000000-0x0000000010419000-memory.dmp

Filesize
4.1MB

Download
memory/3588-17-0x0000000010396000-0x000000001039D000-memory.dmp

Filesize
28KB

Download
memory/3588-24-0x000000001013C000-0x000000001015A000-memory.dmp

Filesize
120KB

Download
memory/4800-12-0x0000000000A30000-0x0000000000CA6000-memory.dmp

Filesize
2.5MB

Download
memory/4800-28-0x00000000201B0000-0x000000002040F000-memory.dmp

Filesize
2.4MB

Download
memory/4800-94-0x0000000000A30000-0x0000000000CA6000-memory.dmp

Filesize
2.5MB

Download
memory/4800-42-0x0000000000A30000-0x0000000000CA6000-memory.dmp

Filesize
2.5MB

Download
memory/4800-16-0x0000000000A30000-0x0000000000CA6000-memory.dmp

Filesize
2.5MB

Download
memory/4800-43-0x0000000000A30000-0x0000000000CA6000-memory.dmp

Filesize
2.5MB

Download
memory/4800-60-0x0000000000A30000-0x0000000000CA6000-memory.dmp

Filesize
2.5MB

Download
memory/4800-25-0x0000000000A30000-0x0000000000CA6000-memory.dmp

Filesize
2.5MB

Download
memory/4800-7-0x0000000000A30000-0x0000000000CA6000-memory.dmp

Filesize
2.5MB

Download
memory/4800-59-0x0000000000A30000-0x0000000000CA6000-memory.dmp

Filesize
2.5MB

Download
memory/4800-82-0x0000000000A30000-0x0000000000CA6000-memory.dmp

Filesize
2.5MB

Download
memory/4800-83-0x0000000000A30000-0x0000000000CA6000-memory.dmp

Filesize
2.5MB

Download
memory/4800-90-0x0000000000A30000-0x0000000000CA6000-memory.dmp

Filesize
2.5MB

Download
memory/4800-91-0x0000000000A30000-0x0000000000CA6000-memory.dmp

Filesize
2.5MB

Download
memory/4800-92-0x0000000000A30000-0x0000000000CA6000-memory.dmp

Filesize
2.5MB

Download
memory/4800-26-0x0000000000A30000-0x0000000000CA6000-memory.dmp

Filesize
2.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads