vidar | c6af08db8d058efc88312d44e1906f4e7cec8d27bd99af3ccd9b09c045551ee3

Analysis

max time kernel
66s
max time network
130s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
05/10/2022, 17:23

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General

Target
file.exe
Size 4.9MB
Sample221005-vx5d6afab8
SHA256 c6af08db8d058efc88312d44e1906f4e7cec8d27bd99af3ccd9b09c045551ee3
MD5 f3e98458c6afc2c7f2456b55ee758568
SHA1 dce0c5c299a29706654393307efd4bd439a63996
SHA512 2054c9f0af3bc820f6bf7daa8c4968a52ce282266c9dc6322945f73f7d45ee31e78b84fc81f9d9de83e0d5b85a827f1e5c9dfc5294577e95bfb8251d3f0e0bb5
SSDEEP 98304:4NoZ0HR04Up9OHxAXvS+qdwJ6Vgf8233IAW9fPxPGSKNrA09UXYlpkBFE:n0HR0dp9xvSbdeoE3IAsZPGSyA5XI4
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

vidar 1679 discovery evasion spyware stealer trojan

Malware Config

Extracted

Family

vidar

Version

54.9

Botnet

1679

https://t.me/larsenup
https://ioc.exchange/@zebra54

Attributes

profile_id
1679

Signatures

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

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	file.exe

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\VideoBiosVersion	file.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	file.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	file.exe

Loads dropped DLL 2 IoCs

pid	Process
3992	file.exe
3992	file.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
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	file.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
3992	file.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	file.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	file.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3592	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
2448	taskkill.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3992	file.exe
3992	file.exe
3992	file.exe
3992	file.exe
3992	file.exe
3992	file.exe
3992	file.exe
3992	file.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2448	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3992 wrote to memory of 1316	3992	file.exe	87
PID 3992 wrote to memory of 1316	3992	file.exe	87
PID 3992 wrote to memory of 1316	3992	file.exe	87
PID 1316 wrote to memory of 2448	1316	cmd.exe	89
PID 1316 wrote to memory of 2448	1316	cmd.exe	89
PID 1316 wrote to memory of 2448	1316	cmd.exe	89
PID 1316 wrote to memory of 3592	1316	cmd.exe	90
PID 1316 wrote to memory of 3592	1316	cmd.exe	90
PID 1316 wrote to memory of 3592	1316	cmd.exe	90

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks computer location settings
- Loads dropped DLL
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3992
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" Iø/c taskkill /im file.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\file.exe" & del C:\PrograData\*.dll & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1316
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im file.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2448
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:3592

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

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Downloads

mozglue.dll

Path C:\ProgramData\mozglue.dll
Size 593KB
SHA256 ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a
MD5 c8fd9be83bc728cc04beffafc2907fe9
SHA1 95ab9f701e0024cedfbd312bcfe4e726744c4f2e
SHA512 fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040
SSDEEP 12288:BlSyAom/gcRKMdRm4wFkRHuyG4RRGJVDjMk/x21R8gY/r:BKgcRKMdRm4wFkVVDGJVv//x21R8br
MD5 SHA1 SHA512 SSDEEP

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nss3.dll

Path C:\ProgramData\nss3.dll
Size 2.0MB
SHA256 ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5
MD5 1cc453cdf74f31e4d913ff9c10acdde2
SHA1 6e85eae544d6e965f15fa5c39700fa7202f3aafe
SHA512 dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571
SSDEEP 49152:fECf12gikHlnKGxJRIB+y5nvxnaOSJ3HFNWYrVvE4CQsgzMmQfTU1NrWmy4KoAzh:J7Tf8J1Q+SS5/nr
MD5 SHA1 SHA512 SSDEEP

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memory/3992-136-0x00000000777C0000-0x0000000077963000-memory.dmp

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memory/3992-139-0x0000000000400000-0x0000000000C35000-memory.dmp

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memory/3992-140-0x0000000061E00000-0x0000000061EF3000-memory.dmp

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memory/3992-138-0x0000000000400000-0x0000000000C35000-memory.dmp

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memory/3992-137-0x0000000000400000-0x0000000000C35000-memory.dmp

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memory/3992-132-0x0000000000400000-0x0000000000C35000-memory.dmp

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memory/3992-162-0x0000000000400000-0x0000000000C35000-memory.dmp

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memory/3992-135-0x0000000000400000-0x0000000000C35000-memory.dmp

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memory/3992-163-0x00000000777C0000-0x0000000077963000-memory.dmp

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memory/3992-134-0x0000000000400000-0x0000000000C35000-memory.dmp

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