vidar | 2b6114a62abacb1a8db1fdb29f9855bca78d8e77dfdb3db07d4a0f59cfb4d9a2

Analysis

max time kernel
16s
max time network
14s
platform
windows7_x64
resource
win7v20201028
submitted
22/12/2020, 06:51

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General

Target
632a153640f22c85dff8322984512134.exe
Size 530KB
Sample201222-d5vxpmg4en
SHA256 2b6114a62abacb1a8db1fdb29f9855bca78d8e77dfdb3db07d4a0f59cfb4d9a2
MD5 632a153640f22c85dff8322984512134
SHA1 ca2faf243790ff3eeab35c40463e496713616b70
SHA512 2c58c18edc894a4facbe58a6d4c646b09fa29f7c06c037f5b66f134b24757d3e475383b0ed1a28c2eb5fef297c10ca22c4472e7adcb71e0d857f3e1f8164a7e1
MD5 SHA1 SHA512

Score

10^/10

vidar discovery spyware stealer

Malware Config

Signatures

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

Deletes itself 1 IoCs

pid	Process
724	cmd.exe

Loads dropped DLL 4 IoCs

pid	Process
1580	632a153640f22c85dff8322984512134.exe
1580	632a153640f22c85dff8322984512134.exe
1580	632a153640f22c85dff8322984512134.exe
1580	632a153640f22c85dff8322984512134.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
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

JavaScript code in executable 1 IoCs

resource	yara_rule
behavioral1/files/0x00030000000130d3-5.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
7	ip-api.com

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	632a153640f22c85dff8322984512134.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	632a153640f22c85dff8322984512134.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
852	taskkill.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1580	632a153640f22c85dff8322984512134.exe
1580	632a153640f22c85dff8322984512134.exe
1580	632a153640f22c85dff8322984512134.exe
1580	632a153640f22c85dff8322984512134.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	852	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1580 wrote to memory of 724	1580	632a153640f22c85dff8322984512134.exe	31
PID 1580 wrote to memory of 724	1580	632a153640f22c85dff8322984512134.exe	31
PID 1580 wrote to memory of 724	1580	632a153640f22c85dff8322984512134.exe	31
PID 1580 wrote to memory of 724	1580	632a153640f22c85dff8322984512134.exe	31
PID 724 wrote to memory of 852	724	cmd.exe	33
PID 724 wrote to memory of 852	724	cmd.exe	33
PID 724 wrote to memory of 852	724	cmd.exe	33
PID 724 wrote to memory of 852	724	cmd.exe	33

C:\Users\Admin\AppData\Local\Temp\632a153640f22c85dff8322984512134.exe
"C:\Users\Admin\AppData\Local\Temp\632a153640f22c85dff8322984512134.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1580
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im 632a153640f22c85dff8322984512134.exe /f & erase C:\Users\Admin\AppData\Local\Temp\632a153640f22c85dff8322984512134.exe & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:724
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im 632a153640f22c85dff8322984512134.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:852

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

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Downloads

memory/1580-2-0x0000000005319000-0x000000000532A000-memory.dmp

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memory/1580-3-0x00000000055A0000-0x00000000055B1000-memory.dmp

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memory/1708-4-0x000007FEF7A50000-0x000007FEF7CCA000-memory.dmp

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