vidar | 3ce688f6b00b57a37f3ffa4c5410cc02ed5fa05eab37304d44e2d8399aa8b8e2

Analysis

max time kernel
63s
max time network
126s
platform
windows10_x64
resource
win10v20210410
submitted
10/07/2021, 05:28

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
bbf3c7740a3507b482260efa0b4c4a82.exe
Size 4.5MB
Sample210710-rpewxflydn
SHA256 3ce688f6b00b57a37f3ffa4c5410cc02ed5fa05eab37304d44e2d8399aa8b8e2
MD5 bbf3c7740a3507b482260efa0b4c4a82
SHA1 295ee7b7a7bc23cbd0bd3950a6d762e157491bf7
SHA512 9d117872fa73c779e399c2f64b81e0edb2d445a98e39e287e3f6b17e81f034ef8c4fe5f4fa37506266673735387f177e7f0c294c7c690799822e5363fb1ab7f6
MD5 SHA1 SHA512

Score

10^/10

vidar discovery evasion spyware stealer themida trojan

Malware Config

Signatures

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Downloads MZ/PE file

Checks BIOS information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	bbf3c7740a3507b482260efa0b4c4a82.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	bbf3c7740a3507b482260efa0b4c4a82.exe

Loads dropped DLL 2 IoCs

pid	Process
4056	bbf3c7740a3507b482260efa0b4c4a82.exe
4056	bbf3c7740a3507b482260efa0b4c4a82.exe

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

Themida packer 1 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral2/memory/4056-114-0x0000000000400000-0x0000000000F48000-memory.dmp	themida

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

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	bbf3c7740a3507b482260efa0b4c4a82.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
4056	bbf3c7740a3507b482260efa0b4c4a82.exe

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	bbf3c7740a3507b482260efa0b4c4a82.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	bbf3c7740a3507b482260efa0b4c4a82.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1332	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
3636	taskkill.exe

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

description	ioc	Process
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	bbf3c7740a3507b482260efa0b4c4a82.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349	bbf3c7740a3507b482260efa0b4c4a82.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4056	bbf3c7740a3507b482260efa0b4c4a82.exe
4056	bbf3c7740a3507b482260efa0b4c4a82.exe
4056	bbf3c7740a3507b482260efa0b4c4a82.exe
4056	bbf3c7740a3507b482260efa0b4c4a82.exe
4056	bbf3c7740a3507b482260efa0b4c4a82.exe
4056	bbf3c7740a3507b482260efa0b4c4a82.exe
4056	bbf3c7740a3507b482260efa0b4c4a82.exe
4056	bbf3c7740a3507b482260efa0b4c4a82.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3636	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4056 wrote to memory of 4012	4056	bbf3c7740a3507b482260efa0b4c4a82.exe	78
PID 4056 wrote to memory of 4012	4056	bbf3c7740a3507b482260efa0b4c4a82.exe	78
PID 4056 wrote to memory of 4012	4056	bbf3c7740a3507b482260efa0b4c4a82.exe	78
PID 4012 wrote to memory of 3636	4012	cmd.exe	80
PID 4012 wrote to memory of 3636	4012	cmd.exe	80
PID 4012 wrote to memory of 3636	4012	cmd.exe	80
PID 4012 wrote to memory of 1332	4012	cmd.exe	81
PID 4012 wrote to memory of 1332	4012	cmd.exe	81
PID 4012 wrote to memory of 1332	4012	cmd.exe	81

C:\Users\Admin\AppData\Local\Temp\bbf3c7740a3507b482260efa0b4c4a82.exe
"C:\Users\Admin\AppData\Local\Temp\bbf3c7740a3507b482260efa0b4c4a82.exe"
1⤵
- Checks BIOS information in registry
- Loads dropped DLL
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks processor information in registry
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4056
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im bbf3c7740a3507b482260efa0b4c4a82.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\bbf3c7740a3507b482260efa0b4c4a82.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4012
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im bbf3c7740a3507b482260efa0b4c4a82.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3636
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:1332

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Install Root Certificate

T1130

Modify Registry

T1112

Virtualization/Sandbox Evasion

T1497

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/4056-114-0x0000000000400000-0x0000000000F48000-memory.dmp

Download

memory/4056-116-0x00000000774D0000-0x000000007765E000-memory.dmp

Download

memory/4056-115-0x0000000000401000-0x0000000000483000-memory.dmp

Download