vidar | 9b7090bc251c0a791b460096094d6aeb5be9dbf70dd5547ee7f3df6ce3cc69b4

Analysis

max time kernel
19s
max time network
112s
platform
windows10_x64
resource
win10v20201028
submitted
22/12/2020, 12:27

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General

Target
5310e9e6d3f803e1bbb18f8b82ca52fb.exe
Size 29KB
Sample201222-db75qyv78a
SHA256 9b7090bc251c0a791b460096094d6aeb5be9dbf70dd5547ee7f3df6ce3cc69b4
MD5 5310e9e6d3f803e1bbb18f8b82ca52fb
SHA1 573f50d85a71beb52ae1ce7a82a585ba56295600
SHA512 d404315c26ead7de34742471437dd08cf98e660734697dc04d085e2c2f2f18c3ffa8931a70993128fe6a698e697013acaabafbf22baff9b1472f617586c61293
MD5 SHA1 SHA512

Score

10^/10

vidar discovery spyware stealer

Malware Config

Signatures

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

Loads dropped DLL 2 IoCs

pid	Process
564	5310e9e6d3f803e1bbb18f8b82ca52fb.exe
564	5310e9e6d3f803e1bbb18f8b82ca52fb.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
behavioral2/files/0x0002000000015660-13.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
17	ip-api.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3108 set thread context of 564	3108	5310e9e6d3f803e1bbb18f8b82ca52fb.exe	82

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	5310e9e6d3f803e1bbb18f8b82ca52fb.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	5310e9e6d3f803e1bbb18f8b82ca52fb.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4028	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
2736	taskkill.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
3108	5310e9e6d3f803e1bbb18f8b82ca52fb.exe
3108	5310e9e6d3f803e1bbb18f8b82ca52fb.exe
564	5310e9e6d3f803e1bbb18f8b82ca52fb.exe
564	5310e9e6d3f803e1bbb18f8b82ca52fb.exe
564	5310e9e6d3f803e1bbb18f8b82ca52fb.exe
564	5310e9e6d3f803e1bbb18f8b82ca52fb.exe
564	5310e9e6d3f803e1bbb18f8b82ca52fb.exe
564	5310e9e6d3f803e1bbb18f8b82ca52fb.exe
564	5310e9e6d3f803e1bbb18f8b82ca52fb.exe
564	5310e9e6d3f803e1bbb18f8b82ca52fb.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3108	5310e9e6d3f803e1bbb18f8b82ca52fb.exe
Token: SeDebugPrivilege	2736	taskkill.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 3108 wrote to memory of 3432	3108	5310e9e6d3f803e1bbb18f8b82ca52fb.exe	75
PID 3108 wrote to memory of 3432	3108	5310e9e6d3f803e1bbb18f8b82ca52fb.exe	75
PID 3108 wrote to memory of 3432	3108	5310e9e6d3f803e1bbb18f8b82ca52fb.exe	75
PID 3432 wrote to memory of 4028	3432	cmd.exe	77
PID 3432 wrote to memory of 4028	3432	cmd.exe	77
PID 3432 wrote to memory of 4028	3432	cmd.exe	77
PID 3108 wrote to memory of 508	3108	5310e9e6d3f803e1bbb18f8b82ca52fb.exe	81
PID 3108 wrote to memory of 508	3108	5310e9e6d3f803e1bbb18f8b82ca52fb.exe	81
PID 3108 wrote to memory of 508	3108	5310e9e6d3f803e1bbb18f8b82ca52fb.exe	81
PID 3108 wrote to memory of 564	3108	5310e9e6d3f803e1bbb18f8b82ca52fb.exe	82
PID 3108 wrote to memory of 564	3108	5310e9e6d3f803e1bbb18f8b82ca52fb.exe	82
PID 3108 wrote to memory of 564	3108	5310e9e6d3f803e1bbb18f8b82ca52fb.exe	82
PID 3108 wrote to memory of 564	3108	5310e9e6d3f803e1bbb18f8b82ca52fb.exe	82
PID 3108 wrote to memory of 564	3108	5310e9e6d3f803e1bbb18f8b82ca52fb.exe	82
PID 3108 wrote to memory of 564	3108	5310e9e6d3f803e1bbb18f8b82ca52fb.exe	82
PID 3108 wrote to memory of 564	3108	5310e9e6d3f803e1bbb18f8b82ca52fb.exe	82
PID 3108 wrote to memory of 564	3108	5310e9e6d3f803e1bbb18f8b82ca52fb.exe	82
PID 3108 wrote to memory of 564	3108	5310e9e6d3f803e1bbb18f8b82ca52fb.exe	82
PID 564 wrote to memory of 1196	564	5310e9e6d3f803e1bbb18f8b82ca52fb.exe	83
PID 564 wrote to memory of 1196	564	5310e9e6d3f803e1bbb18f8b82ca52fb.exe	83
PID 564 wrote to memory of 1196	564	5310e9e6d3f803e1bbb18f8b82ca52fb.exe	83
PID 1196 wrote to memory of 2736	1196	cmd.exe	85
PID 1196 wrote to memory of 2736	1196	cmd.exe	85
PID 1196 wrote to memory of 2736	1196	cmd.exe	85

C:\Users\Admin\AppData\Local\Temp\5310e9e6d3f803e1bbb18f8b82ca52fb.exe
"C:\Users\Admin\AppData\Local\Temp\5310e9e6d3f803e1bbb18f8b82ca52fb.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3108
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout 4.827
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3432
- - C:\Windows\SysWOW64\timeout.exe
    timeout 4.827
    3⤵
    - Delays execution with timeout.exe
    PID:4028
- C:\Users\Admin\AppData\Local\Temp\5310e9e6d3f803e1bbb18f8b82ca52fb.exe
  "C:\Users\Admin\AppData\Local\Temp\5310e9e6d3f803e1bbb18f8b82ca52fb.exe"
  2⤵
  PID:508
- C:\Users\Admin\AppData\Local\Temp\5310e9e6d3f803e1bbb18f8b82ca52fb.exe
  "C:\Users\Admin\AppData\Local\Temp\5310e9e6d3f803e1bbb18f8b82ca52fb.exe"
  2⤵
  - Loads dropped DLL
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:564
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c taskkill /im 5310e9e6d3f803e1bbb18f8b82ca52fb.exe /f & erase C:\Users\Admin\AppData\Local\Temp\5310e9e6d3f803e1bbb18f8b82ca52fb.exe & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1196
  - - C:\Windows\SysWOW64\taskkill.exe
      taskkill /im 5310e9e6d3f803e1bbb18f8b82ca52fb.exe /f
      4⤵
      Kills process with taskkill
      Suspicious use of AdjustPrivilegeToken
      PID:2736

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/564-10-0x0000000000400000-0x000000000048D000-memory.dmp

Download

memory/564-12-0x0000000000400000-0x000000000048D000-memory.dmp

Download

memory/3108-9-0x0000000009570000-0x0000000009571000-memory.dmp

Download

memory/3108-2-0x00000000739A0000-0x000000007408E000-memory.dmp

Download

memory/3108-8-0x00000000026D0000-0x000000000275E000-memory.dmp

Download

memory/3108-5-0x0000000004CA0000-0x0000000004CA1000-memory.dmp

Download

memory/3108-3-0x0000000000400000-0x0000000000401000-memory.dmp

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