vidar | e671deac46898cd1ce138deb64f63c2a7d09f40b593213e2337b0ffa08aab8e7

General

Target

76483adfe01810b5472d71bf6b50a699.exe
Size

663KB
MD5

76483adfe01810b5472d71bf6b50a699
SHA1

b2ef6512409bd35cff3ed33fad3116883c2af459
SHA256

e671deac46898cd1ce138deb64f63c2a7d09f40b593213e2337b0ffa08aab8e7
SHA512

64b3d0e53dad585cc858a8a317fb870034c9947568a2c2febae93483df577d5670aa4a34382c148d91f07e652b346749346d4beaa8e99665fa15002313c5ebf4

Score

10^/10

vidar 1008 discovery spyware stealer suricata

Malware Config

Extracted

Family

vidar

Version

40.3

Botnet

1008

C2

https://lenko349.tumblr.com/

Attributes

profile_id
1008

Signatures

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)
suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)
suricata
suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload
suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload
suricata
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil
suricata

Vidar Stealer 2 IoCs

stealer

resource	yara_rule
behavioral2/memory/580-114-0x0000000002EB0000-0x0000000002F83000-memory.dmp	family_vidar
behavioral2/memory/580-115-0x0000000000400000-0x0000000002BB1000-memory.dmp	family_vidar

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
580	76483adfe01810b5472d71bf6b50a699.exe
580	76483adfe01810b5472d71bf6b50a699.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

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	76483adfe01810b5472d71bf6b50a699.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	76483adfe01810b5472d71bf6b50a699.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2204	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
3648	taskkill.exe

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349	76483adfe01810b5472d71bf6b50a699.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	76483adfe01810b5472d71bf6b50a699.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
580	76483adfe01810b5472d71bf6b50a699.exe
580	76483adfe01810b5472d71bf6b50a699.exe
580	76483adfe01810b5472d71bf6b50a699.exe
580	76483adfe01810b5472d71bf6b50a699.exe
580	76483adfe01810b5472d71bf6b50a699.exe
580	76483adfe01810b5472d71bf6b50a699.exe
580	76483adfe01810b5472d71bf6b50a699.exe
580	76483adfe01810b5472d71bf6b50a699.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3648	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 580 wrote to memory of 516	580	76483adfe01810b5472d71bf6b50a699.exe	77
PID 580 wrote to memory of 516	580	76483adfe01810b5472d71bf6b50a699.exe	77
PID 580 wrote to memory of 516	580	76483adfe01810b5472d71bf6b50a699.exe	77
PID 516 wrote to memory of 3648	516	cmd.exe	79
PID 516 wrote to memory of 3648	516	cmd.exe	79
PID 516 wrote to memory of 3648	516	cmd.exe	79
PID 516 wrote to memory of 2204	516	cmd.exe	81
PID 516 wrote to memory of 2204	516	cmd.exe	81
PID 516 wrote to memory of 2204	516	cmd.exe	81

C:\Users\Admin\AppData\Local\Temp\76483adfe01810b5472d71bf6b50a699.exe
"C:\Users\Admin\AppData\Local\Temp\76483adfe01810b5472d71bf6b50a699.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:580
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im 76483adfe01810b5472d71bf6b50a699.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\76483adfe01810b5472d71bf6b50a699.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:516
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im 76483adfe01810b5472d71bf6b50a699.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3648
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:2204

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Install Root Certificate

Modify Registry

Credential Access

Credentials in Files

3

T1081

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/580-114-0x0000000002EB0000-0x0000000002F83000-memory.dmp

Filesize
844KB

Download
memory/580-115-0x0000000000400000-0x0000000002BB1000-memory.dmp

Filesize
39.7MB

Download

Analysis

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