vidar | 470f7e4b374c37aeb60ce012b83d1da04899dbeda81f6a1799aadefc7789f5e6

Analysis

max time kernel
120s
max time network
126s
platform
windows7_x64
resource
win7
submitted
29-06-2020 07:25

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General

Target

3c1b51581b897869c589290fcabe72d0.exe
Size

706KB
MD5

3c1b51581b897869c589290fcabe72d0
SHA1

fd8f86a0d94288a0b73a3ec1fd1674ebcac37ee8
SHA256

470f7e4b374c37aeb60ce012b83d1da04899dbeda81f6a1799aadefc7789f5e6
SHA512

711bd45dbae2160eb7ccb02007234f58d0d866a590c325f5aeb9d12ec00808d8e3da83ba10a1f5a6fa957a17dfc36be17548865b0981744446323f0f77d3b285

Score

10^/10

spyware stealer vidar

Malware Config

Signatures

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

Loads dropped DLL 4 IoCs

pid	Process
1520	vbc.exe
1520	vbc.exe
1520	vbc.exe
1520	vbc.exe

Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware

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

Data from Local System
T1005

Credentials in Files
T1081
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064
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

JavaScript code in executable 1 IoCs

resource	yara_rule
behavioral1/files/0x00030000000131e4-5.dat	js

Looks up external IP address via web service 1 IoCs

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

flow	ioc
9	ip-api.com

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	3c1b51581b897869c589290fcabe72d0.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	3c1b51581b897869c589290fcabe72d0.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1440 set thread context of 1520	1440	3c1b51581b897869c589290fcabe72d0.exe	26

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

Kills process with taskkill 1 IoCs

evasion

pid	Process
1900	taskkill.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1520	vbc.exe
1520	vbc.exe
1520	vbc.exe
1520	vbc.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1900	taskkill.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1440	3c1b51581b897869c589290fcabe72d0.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1440 wrote to memory of 1520	1440	3c1b51581b897869c589290fcabe72d0.exe	26
PID 1440 wrote to memory of 1520	1440	3c1b51581b897869c589290fcabe72d0.exe	26
PID 1440 wrote to memory of 1520	1440	3c1b51581b897869c589290fcabe72d0.exe	26
PID 1440 wrote to memory of 1520	1440	3c1b51581b897869c589290fcabe72d0.exe	26
PID 1440 wrote to memory of 1520	1440	3c1b51581b897869c589290fcabe72d0.exe	26
PID 1440 wrote to memory of 1520	1440	3c1b51581b897869c589290fcabe72d0.exe	26
PID 1440 wrote to memory of 1520	1440	3c1b51581b897869c589290fcabe72d0.exe	26
PID 1440 wrote to memory of 1520	1440	3c1b51581b897869c589290fcabe72d0.exe	26
PID 1440 wrote to memory of 1520	1440	3c1b51581b897869c589290fcabe72d0.exe	26
PID 1520 wrote to memory of 1288	1520	vbc.exe	27
PID 1520 wrote to memory of 1288	1520	vbc.exe	27
PID 1520 wrote to memory of 1288	1520	vbc.exe	27
PID 1520 wrote to memory of 1288	1520	vbc.exe	27
PID 1288 wrote to memory of 1900	1288	cmd.exe	29
PID 1288 wrote to memory of 1900	1288	cmd.exe	29
PID 1288 wrote to memory of 1900	1288	cmd.exe	29
PID 1288 wrote to memory of 1900	1288	cmd.exe	29

C:\Users\Admin\AppData\Local\Temp\3c1b51581b897869c589290fcabe72d0.exe
"C:\Users\Admin\AppData\Local\Temp\3c1b51581b897869c589290fcabe72d0.exe"
1⤵
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1440
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  - Loads dropped DLL
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1520
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c taskkill /im vbc.exe /f & erase C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1288
  - - C:\Windows\SysWOW64\taskkill.exe
      taskkill /im vbc.exe /f
      4⤵
      Kills process with taskkill
      Suspicious use of AdjustPrivilegeToken
      PID:1900

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scripting

T1064

Persistence

Privilege Escalation

Defense Evasion

Scripting

T1064

Credential Access

Credentials in Files

T1081

Discovery

Peripheral Device Discovery

T1120

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/1520-2-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/1520-4-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download