vidar | ed8a7ffec56f450a365e758012db092883bbd23565f3f9fbb004c189fb703de3

Analysis

max time kernel
66s
max time network
127s
platform
windows10_x64
resource
win10v20201028
submitted
25-03-2021 21:16

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General

Target

ed8a7ffec56f450a365e758012db092883bbd23565f3f.exe
Size

784KB
MD5

1d963f2296c5363f16dff1165cb8e413
SHA1

15f699a8a754a937081a27ab75d4a793b82993e6
SHA256

ed8a7ffec56f450a365e758012db092883bbd23565f3f9fbb004c189fb703de3
SHA512

a76bf1f1398800ee0a09088d42dc38ce2d42b66e24a8cb4c97f1c055702483193467b562740c808106fa813614425304993f16e9a101e1e8202deec4ef65e2be

Score

10^/10

vidar discovery persistence spyware stealer

Malware Config

Signatures

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar

Executes dropped EXE 2 IoCs

pid	Process
1324	updatewin.exe
2136	5.exe

Loads dropped DLL 2 IoCs

pid	Process
2136	5.exe
2136	5.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3708	icacls.exe

Reads local data of messenger clients 2 TTPs
Infostealers often target stored data of messaging applications, which can include saved credentials and account information.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\189211a5-3899-4f19-aea8-f304a83bbcd7\\ed8a7ffec56f450a365e758012db092883bbd23565f3f.exe\" --AutoStart"	ed8a7ffec56f450a365e758012db092883bbd23565f3f.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

Looks up external IP address via web service 3 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
18	api.2ip.ua
8	api.2ip.ua
11	api.2ip.ua

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	5.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	5.exe

Delays execution with timeout.exe 2 IoCs

evasion

pid	Process
2220	timeout.exe
2268	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
2748	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	ed8a7ffec56f450a365e758012db092883bbd23565f3f.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	ed8a7ffec56f450a365e758012db092883bbd23565f3f.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
412	ed8a7ffec56f450a365e758012db092883bbd23565f3f.exe
412	ed8a7ffec56f450a365e758012db092883bbd23565f3f.exe
3608	ed8a7ffec56f450a365e758012db092883bbd23565f3f.exe
3608	ed8a7ffec56f450a365e758012db092883bbd23565f3f.exe
2136	5.exe
2136	5.exe
2136	5.exe
2136	5.exe
2136	5.exe
2136	5.exe
2136	5.exe
2136	5.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2748	taskkill.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 412 wrote to memory of 3708	412	ed8a7ffec56f450a365e758012db092883bbd23565f3f.exe	75
PID 412 wrote to memory of 3708	412	ed8a7ffec56f450a365e758012db092883bbd23565f3f.exe	75
PID 412 wrote to memory of 3708	412	ed8a7ffec56f450a365e758012db092883bbd23565f3f.exe	75
PID 412 wrote to memory of 3608	412	ed8a7ffec56f450a365e758012db092883bbd23565f3f.exe	76
PID 412 wrote to memory of 3608	412	ed8a7ffec56f450a365e758012db092883bbd23565f3f.exe	76
PID 412 wrote to memory of 3608	412	ed8a7ffec56f450a365e758012db092883bbd23565f3f.exe	76
PID 3608 wrote to memory of 1324	3608	ed8a7ffec56f450a365e758012db092883bbd23565f3f.exe	78
PID 3608 wrote to memory of 1324	3608	ed8a7ffec56f450a365e758012db092883bbd23565f3f.exe	78
PID 3608 wrote to memory of 1324	3608	ed8a7ffec56f450a365e758012db092883bbd23565f3f.exe	78
PID 3608 wrote to memory of 2136	3608	ed8a7ffec56f450a365e758012db092883bbd23565f3f.exe	79
PID 3608 wrote to memory of 2136	3608	ed8a7ffec56f450a365e758012db092883bbd23565f3f.exe	79
PID 3608 wrote to memory of 2136	3608	ed8a7ffec56f450a365e758012db092883bbd23565f3f.exe	79
PID 1324 wrote to memory of 3360	1324	updatewin.exe	81
PID 1324 wrote to memory of 3360	1324	updatewin.exe	81
PID 1324 wrote to memory of 3360	1324	updatewin.exe	81
PID 3360 wrote to memory of 2220	3360	cmd.exe	84
PID 3360 wrote to memory of 2220	3360	cmd.exe	84
PID 3360 wrote to memory of 2220	3360	cmd.exe	84
PID 2136 wrote to memory of 200	2136	5.exe	86
PID 2136 wrote to memory of 200	2136	5.exe	86
PID 2136 wrote to memory of 200	2136	5.exe	86
PID 200 wrote to memory of 2748	200	cmd.exe	88
PID 200 wrote to memory of 2748	200	cmd.exe	88
PID 200 wrote to memory of 2748	200	cmd.exe	88
PID 200 wrote to memory of 2268	200	cmd.exe	90
PID 200 wrote to memory of 2268	200	cmd.exe	90
PID 200 wrote to memory of 2268	200	cmd.exe	90

C:\Users\Admin\AppData\Local\Temp\ed8a7ffec56f450a365e758012db092883bbd23565f3f.exe
"C:\Users\Admin\AppData\Local\Temp\ed8a7ffec56f450a365e758012db092883bbd23565f3f.exe"
1⤵
- Adds Run key to start application
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:412
- C:\Windows\SysWOW64\icacls.exe
  icacls "C:\Users\Admin\AppData\Local\189211a5-3899-4f19-aea8-f304a83bbcd7" /deny *S-1-1-0:(OI)(CI)(DE,DC)
  2⤵
  - Modifies file permissions
  PID:3708
- C:\Users\Admin\AppData\Local\Temp\ed8a7ffec56f450a365e758012db092883bbd23565f3f.exe
  "C:\Users\Admin\AppData\Local\Temp\ed8a7ffec56f450a365e758012db092883bbd23565f3f.exe" --Admin IsNotAutoStart IsNotTask
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3608
- - C:\Users\Admin\AppData\Local\2f61fc79-6c97-412e-8d7d-9ad96872610c\updatewin.exe
    "C:\Users\Admin\AppData\Local\2f61fc79-6c97-412e-8d7d-9ad96872610c\updatewin.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of WriteProcessMemory
    PID:1324
  - - C:\Windows\SysWOW64\cmd.exe
      /c timeout /t 3 & del /f /q C:\Users\Admin\AppData\Local\2f61fc79-6c97-412e-8d7d-9ad96872610c\updatewin.exe
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3360
    - - C:\Windows\SysWOW64\timeout.exe
        
        timeout /t 3
        5⤵
        Delays execution with timeout.exe
        
        PID:2220
- - C:\Users\Admin\AppData\Local\2f61fc79-6c97-412e-8d7d-9ad96872610c\5.exe
    "C:\Users\Admin\AppData\Local\2f61fc79-6c97-412e-8d7d-9ad96872610c\5.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Checks processor information in registry
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:2136
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im 5.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\2f61fc79-6c97-412e-8d7d-9ad96872610c\5.exe" & del C:\ProgramData\*.dll & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:200
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im 5.exe /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:2748
    - - C:\Windows\SysWOW64\timeout.exe
        
        timeout /t 6
        5⤵
        Delays execution with timeout.exe
        
        PID:2268

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

File and Directory Permissions Modification

T1222

Install Root Certificate

T1130

Modify Registry

T1112

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

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Downloads

memory/412-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/412-3-0x0000000000CC0000-0x0000000000DDA000-memory.dmp

Filesize
1.1MB

Download
memory/412-2-0x0000000000CC0000-0x0000000000CC1000-memory.dmp

Filesize
4KB

Download
memory/2136-21-0x00000000031F0000-0x00000000031F1000-memory.dmp

Filesize
4KB

Download
memory/2136-22-0x0000000003080000-0x0000000003116000-memory.dmp

Filesize
600KB

Download
memory/2136-23-0x0000000000400000-0x0000000000499000-memory.dmp

Filesize
612KB

Download
memory/3608-14-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3608-8-0x0000000000C30000-0x0000000000C31000-memory.dmp

Filesize
4KB

Download