vidar | 470f7e4b374c37aeb60ce012b83d1da04899dbeda81f6a1799aadefc7789f5e6

Analysis

max time kernel
146s
max time network
61s
platform
windows10_x64
resource
win10v200430
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 2 IoCs

Processes:

vbc.exe

pid	Process
972	vbc.exe
972	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

Processes:

resource	yara_rule
behavioral2/files/0x000100000001ad74-9.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.

Processes:

flow	ioc
5	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

Processes:

3c1b51581b897869c589290fcabe72d0.exe

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

Processes:

3c1b51581b897869c589290fcabe72d0.exe

description	pid	Process	procid_target
PID 3008 set thread context of 972	3008	3c1b51581b897869c589290fcabe72d0.exe	66

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

Processes:

vbc.exe

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

Processes:

taskkill.exe

pid	Process
2152	taskkill.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

vbc.exe

pid	Process
972	vbc.exe
972	vbc.exe
972	vbc.exe
972	vbc.exe
972	vbc.exe
972	vbc.exe
972	vbc.exe
972	vbc.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description	pid	Process
Token: SeDebugPrivilege	2152	taskkill.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

3c1b51581b897869c589290fcabe72d0.exe

pid	Process
3008	3c1b51581b897869c589290fcabe72d0.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

3c1b51581b897869c589290fcabe72d0.exevbc.execmd.exe

description	pid	Process	procid_target
PID 3008 wrote to memory of 972	3008	3c1b51581b897869c589290fcabe72d0.exe	66
PID 3008 wrote to memory of 972	3008	3c1b51581b897869c589290fcabe72d0.exe	66
PID 3008 wrote to memory of 972	3008	3c1b51581b897869c589290fcabe72d0.exe	66
PID 3008 wrote to memory of 972	3008	3c1b51581b897869c589290fcabe72d0.exe	66
PID 3008 wrote to memory of 972	3008	3c1b51581b897869c589290fcabe72d0.exe	66
PID 3008 wrote to memory of 972	3008	3c1b51581b897869c589290fcabe72d0.exe	66
PID 3008 wrote to memory of 972	3008	3c1b51581b897869c589290fcabe72d0.exe	66
PID 3008 wrote to memory of 972	3008	3c1b51581b897869c589290fcabe72d0.exe	66
PID 972 wrote to memory of 2052	972	vbc.exe	67
PID 972 wrote to memory of 2052	972	vbc.exe	67
PID 972 wrote to memory of 2052	972	vbc.exe	67
PID 2052 wrote to memory of 2152	2052	cmd.exe	69
PID 2052 wrote to memory of 2152	2052	cmd.exe	69
PID 2052 wrote to memory of 2152	2052	cmd.exe	69

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:3008
- 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:972
- - 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:2052
  - - C:\Windows\SysWOW64\taskkill.exe
      taskkill /im vbc.exe /f
      4⤵
      Kills process with taskkill
      Suspicious use of AdjustPrivilegeToken
      PID:2152

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

\ProgramData\mozglue.dll

MD5
8f73c08a9660691143661bf7332c3c27

SHA1
37fa65dd737c50fda710fdbde89e51374d0c204a

SHA256
3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

SHA512
0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

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\ProgramData\nss3.dll

MD5
bfac4e3c5908856ba17d41edcd455a51

SHA1
8eec7e888767aa9e4cca8ff246eb2aacb9170428

SHA256
e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

SHA512
2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

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memory/972-6-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/972-7-0x000000000045BBFD-mapping.dmp

Download
memory/972-8-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2052-79-0x0000000000000000-mapping.dmp

Download
memory/2152-80-0x0000000000000000-mapping.dmp

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