vidar | 8e2c24992e272ae9bd921ce4a96c3c42c8c80b69c615a4570efc06f52f151855

Resubmissions

19/04/2023, 17:04

230419-vld3tscb75

19/04/2023, 14:06

230419-red8gacg7x10

Analysis

max time kernel
100s
max time network
102s
platform
windows10-2004_x64
resource
win10v2004-20230221-en
resource tags

arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system
submitted
19/04/2023, 14:06

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General

Target
file.exe
Size 346KB
Sample230419-red8gacg7x
SHA256 8e2c24992e272ae9bd921ce4a96c3c42c8c80b69c615a4570efc06f52f151855
MD5 b65304374c80921e649d272984a0fb4a
SHA1 8ee64fdda12d8bd5386182fb4d6b85e7d8d5a209
SHA512 37f02ba16e9ada335a066b73f71a2c5cd5f4f5ebf4d5fa147eae2e2da5578676ce6f72e55f38b25608b26be7d611e80b2df83881f9a18fbcfa9c93f928dfb898
SSDEEP 6144:Grq9t3BXZzXdiCJmipOpNldW/1Fm/gJYPDWJ:oq9xBJwCJmi+1e
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

vidar e749025c61b2caca10aa829a9e1a65a1 discovery spyware stealer upx

Malware Config

Extracted

Family

vidar

Version

Botnet

e749025c61b2caca10aa829a9e1a65a1

https://steamcommunity.com/profiles/76561199494593681
https://t.me/auftriebs

Attributes

profile_id_v2
e749025c61b2caca10aa829a9e1a65a1
user_agent
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:105.0) Gecko/20100101 Firefox/105.0

Signatures

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-1-5-21-2805025096-2326403612-4231045514-1000\Control Panel\International\Geo\Nation	file.exe

Executes dropped EXE 1 IoCs

pid	Process
3924	11958128505081052731.exe

Loads dropped DLL 2 IoCs

pid	Process
796	file.exe
796	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

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/files/0x0006000000023171-225.dat	upx
behavioral2/files/0x0006000000023171-227.dat	upx
behavioral2/files/0x0006000000023171-228.dat	upx
behavioral2/memory/3924-229-0x00000000007E0000-0x0000000001643000-memory.dmp	upx
behavioral2/memory/3924-230-0x00000000007E0000-0x0000000001643000-memory.dmp	upx

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

pid	pid_target	Process	procid_target
4364	796	WerFault.exe	83

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	file.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	file.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4800	timeout.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
796	file.exe
796	file.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 796 wrote to memory of 3924	796	file.exe	90
PID 796 wrote to memory of 3924	796	file.exe	90
PID 796 wrote to memory of 2996	796	file.exe	92
PID 796 wrote to memory of 2996	796	file.exe	92
PID 796 wrote to memory of 2996	796	file.exe	92
PID 3924 wrote to memory of 4820	3924	11958128505081052731.exe	97
PID 3924 wrote to memory of 4820	3924	11958128505081052731.exe	97
PID 2996 wrote to memory of 4800	2996	cmd.exe	99
PID 2996 wrote to memory of 4800	2996	cmd.exe	99
PID 2996 wrote to memory of 4800	2996	cmd.exe	99
PID 4820 wrote to memory of 2096	4820	cmd.exe	100
PID 4820 wrote to memory of 2096	4820	cmd.exe	100

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:796
- C:\ProgramData\11958128505081052731.exe
  "C:\ProgramData\11958128505081052731.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:3924
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /C choice /C Y /N /D Y /T 0 &Del C:\ProgramData\11958128505081052731.exe
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4820
  - - C:\Windows\system32\choice.exe
      choice /C Y /N /D Y /T 0
      4⤵
      PID:2096
- 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:2996
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:4800
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 796 -s 2196
  2⤵
  - Program crash
  PID:4364

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 796 -ip 796
1⤵
PID:2920

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

11958128505081052731.exe

Path C:\ProgramData\11958128505081052731.exe
Size 4.3MB
SHA256 0a0fbd6af9e5d110118f02b87f9a92f9f58fb100f6d9883d55a6aae6c548b4ce
MD5 c4ab3149ef02a36d663699a8c541933e
SHA1 67088f5eff9ec575775b711c9e3650d12d7f4d5c
SHA512 88b10f81b2cd273fefeffb4c2078807e89b4b756d50110b61e9f89092715f29ba8d1803f64bc971c1293dc624b92d0b7f05612ae661dd8d24e47d39047a4b7b4
SSDEEP 98304:8B2UCoD6CAW0U9S8uPiepEAqjYe//KRxHzRWgWJKuAfA:M2lo2CAW0Uc8seYeHKRxH1YQH
MD5 SHA1 SHA512 SSDEEP

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11958128505081052731.exe

Path C:\ProgramData\11958128505081052731.exe
Size 4.3MB
SHA256 0a0fbd6af9e5d110118f02b87f9a92f9f58fb100f6d9883d55a6aae6c548b4ce
MD5 c4ab3149ef02a36d663699a8c541933e
SHA1 67088f5eff9ec575775b711c9e3650d12d7f4d5c
SHA512 88b10f81b2cd273fefeffb4c2078807e89b4b756d50110b61e9f89092715f29ba8d1803f64bc971c1293dc624b92d0b7f05612ae661dd8d24e47d39047a4b7b4
SSDEEP 98304:8B2UCoD6CAW0U9S8uPiepEAqjYe//KRxHzRWgWJKuAfA:M2lo2CAW0Uc8seYeHKRxH1YQH
MD5 SHA1 SHA512 SSDEEP

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11958128505081052731.exe

Path C:\ProgramData\11958128505081052731.exe
Size 4.3MB
SHA256 0a0fbd6af9e5d110118f02b87f9a92f9f58fb100f6d9883d55a6aae6c548b4ce
MD5 c4ab3149ef02a36d663699a8c541933e
SHA1 67088f5eff9ec575775b711c9e3650d12d7f4d5c
SHA512 88b10f81b2cd273fefeffb4c2078807e89b4b756d50110b61e9f89092715f29ba8d1803f64bc971c1293dc624b92d0b7f05612ae661dd8d24e47d39047a4b7b4
SSDEEP 98304:8B2UCoD6CAW0U9S8uPiepEAqjYe//KRxHzRWgWJKuAfA:M2lo2CAW0Uc8seYeHKRxH1YQH
MD5 SHA1 SHA512 SSDEEP

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mozglue.dll

Path C:\ProgramData\mozglue.dll
Size 593KB
SHA256 ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a
MD5 c8fd9be83bc728cc04beffafc2907fe9
SHA1 95ab9f701e0024cedfbd312bcfe4e726744c4f2e
SHA512 fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040
SSDEEP 12288:BlSyAom/gcRKMdRm4wFkRHuyG4RRGJVDjMk/x21R8gY/r:BKgcRKMdRm4wFkVVDGJVv//x21R8br
MD5 SHA1 SHA512 SSDEEP

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nss3.dll

Path C:\ProgramData\nss3.dll
Size 2.0MB
SHA256 ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5
MD5 1cc453cdf74f31e4d913ff9c10acdde2
SHA1 6e85eae544d6e965f15fa5c39700fa7202f3aafe
SHA512 dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571
SSDEEP 49152:fECf12gikHlnKGxJRIB+y5nvxnaOSJ3HFNWYrVvE4CQsgzMmQfTU1NrWmy4KoAzh:J7Tf8J1Q+SS5/nr
MD5 SHA1 SHA512 SSDEEP

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memory/796-134-0x0000000004800000-0x0000000004857000-memory.dmp

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memory/796-144-0x0000000061E00000-0x0000000061EF3000-memory.dmp

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memory/796-214-0x0000000000400000-0x0000000002BB0000-memory.dmp

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memory/796-231-0x0000000000400000-0x0000000002BB0000-memory.dmp

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memory/3924-229-0x00000000007E0000-0x0000000001643000-memory.dmp

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memory/3924-230-0x00000000007E0000-0x0000000001643000-memory.dmp

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