6d98b4e6bed7410daab6fea5b2e6f22878ace7042cd0f6343e27696151cd7e90

Analysis

max time kernel
150s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
02/11/2024, 17:23

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
2024-11-02_19308e849504aa0d52ac7f8015df303c_bkransomware.exe
Size 6.6MB
Sample241102-vyb41atlap
SHA256 6d98b4e6bed7410daab6fea5b2e6f22878ace7042cd0f6343e27696151cd7e90
MD5 19308e849504aa0d52ac7f8015df303c
SHA1 c4fa3423c24a2bca40c86e0b0bc959e4b4f368e7
SHA512 4bc1a8f1b1950a8731018e5b636dcc58739fe5d6c5cf371a8dea78d0c53880e2aa51a413b3ad71988033401d7792248e805b6bd460bfbc65effaf529c9520346
SSDEEP 196608:QlOFijx86xOs75DIEp8IKJBxKGE7v3E7TEXlsevUf:QlBljNDF/KJaGE7v3E7TEeevK
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

defense_evasion discovery execution

Malware Config

Signatures

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
4504	powershell.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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	2024-11-02_19308e849504aa0d52ac7f8015df303c_bkransomware.exe

Indirect Command Execution 1 TTPs 5 IoCs

Adversaries may abuse utilities that allow for command execution to bypass security restrictions that limit the use of command-line interpreters.

defense_evasion

Indirect Command Execution

T1202

pid	Process
4488	forfiles.exe
1356	forfiles.exe
1872	forfiles.exe
652	forfiles.exe
4548	forfiles.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1292	4104	WerFault.exe	83

System Location Discovery: System Language Discovery 1 TTPs 18 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	forfiles.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	forfiles.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-11-02_19308e849504aa0d52ac7f8015df303c_bkransomware.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gpupdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	forfiles.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	forfiles.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	forfiles.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4504	powershell.exe
4504	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4504	powershell.exe

Suspicious use of WriteProcessMemory 51 IoCs

description	pid	Process	procid_target
PID 4104 wrote to memory of 2152	4104	2024-11-02_19308e849504aa0d52ac7f8015df303c_bkransomware.exe	86
PID 4104 wrote to memory of 2152	4104	2024-11-02_19308e849504aa0d52ac7f8015df303c_bkransomware.exe	86
PID 4104 wrote to memory of 2152	4104	2024-11-02_19308e849504aa0d52ac7f8015df303c_bkransomware.exe	86
PID 2152 wrote to memory of 4488	2152	cmd.exe	88
PID 2152 wrote to memory of 4488	2152	cmd.exe	88
PID 2152 wrote to memory of 4488	2152	cmd.exe	88
PID 4488 wrote to memory of 2568	4488	forfiles.exe	89
PID 4488 wrote to memory of 2568	4488	forfiles.exe	89
PID 4488 wrote to memory of 2568	4488	forfiles.exe	89
PID 2568 wrote to memory of 4852	2568	cmd.exe	90
PID 2568 wrote to memory of 4852	2568	cmd.exe	90
PID 2568 wrote to memory of 4852	2568	cmd.exe	90
PID 2152 wrote to memory of 1356	2152	cmd.exe	91
PID 2152 wrote to memory of 1356	2152	cmd.exe	91
PID 2152 wrote to memory of 1356	2152	cmd.exe	91
PID 1356 wrote to memory of 1228	1356	forfiles.exe	92
PID 1356 wrote to memory of 1228	1356	forfiles.exe	92
PID 1356 wrote to memory of 1228	1356	forfiles.exe	92
PID 1228 wrote to memory of 944	1228	cmd.exe	93
PID 1228 wrote to memory of 944	1228	cmd.exe	93
PID 1228 wrote to memory of 944	1228	cmd.exe	93
PID 2152 wrote to memory of 1872	2152	cmd.exe	94
PID 2152 wrote to memory of 1872	2152	cmd.exe	94
PID 2152 wrote to memory of 1872	2152	cmd.exe	94
PID 1872 wrote to memory of 2200	1872	forfiles.exe	95
PID 1872 wrote to memory of 2200	1872	forfiles.exe	95
PID 1872 wrote to memory of 2200	1872	forfiles.exe	95
PID 2200 wrote to memory of 800	2200	cmd.exe	96
PID 2200 wrote to memory of 800	2200	cmd.exe	96
PID 2200 wrote to memory of 800	2200	cmd.exe	96
PID 2152 wrote to memory of 652	2152	cmd.exe	97
PID 2152 wrote to memory of 652	2152	cmd.exe	97
PID 2152 wrote to memory of 652	2152	cmd.exe	97
PID 652 wrote to memory of 3560	652	forfiles.exe	98
PID 652 wrote to memory of 3560	652	forfiles.exe	98
PID 652 wrote to memory of 3560	652	forfiles.exe	98
PID 3560 wrote to memory of 4928	3560	cmd.exe	99
PID 3560 wrote to memory of 4928	3560	cmd.exe	99
PID 3560 wrote to memory of 4928	3560	cmd.exe	99
PID 2152 wrote to memory of 4548	2152	cmd.exe	101
PID 2152 wrote to memory of 4548	2152	cmd.exe	101
PID 2152 wrote to memory of 4548	2152	cmd.exe	101
PID 4548 wrote to memory of 5012	4548	forfiles.exe	102
PID 4548 wrote to memory of 5012	4548	forfiles.exe	102
PID 4548 wrote to memory of 5012	4548	forfiles.exe	102
PID 5012 wrote to memory of 4504	5012	cmd.exe	103
PID 5012 wrote to memory of 4504	5012	cmd.exe	103
PID 5012 wrote to memory of 4504	5012	cmd.exe	103
PID 4504 wrote to memory of 3760	4504	powershell.exe	108
PID 4504 wrote to memory of 3760	4504	powershell.exe	108
PID 4504 wrote to memory of 3760	4504	powershell.exe	108

C:\Users\Admin\AppData\Local\Temp\2024-11-02_19308e849504aa0d52ac7f8015df303c_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-02_19308e849504aa0d52ac7f8015df303c_bkransomware.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4104
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C forfiles /p c:\windows\system32 /m where.exe /c "cmd /C reg add \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction\" /f /v 2147735503 /t REG_SZ /d 6" & forfiles /p c:\windows\system32 /m calc.exe /c "cmd /C reg add \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction\" /f /v 2147814524 /t REG_SZ /d 6" & forfiles /p c:\windows\system32 /m where.exe /c "cmd /C reg add \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction\" /f /v 2147780199 /t REG_SZ /d 6" & forfiles /p c:\windows\system32 /m waitfor.exe /c "cmd /C reg add \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction\" /f /v 2147812831 /t REG_SZ /d 6" & forfiles /p c:\windows\system32 /m help.exe /c "cmd /C powershell start-process -WindowStyle Hidden gpupdate.exe /force"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2152
- - C:\Windows\SysWOW64\forfiles.exe
    forfiles /p c:\windows\system32 /m where.exe /c "cmd /C reg add \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction\" /f /v 2147735503 /t REG_SZ /d 6"
    3⤵
    - Indirect Command Execution
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4488
  - - C:\Windows\SysWOW64\cmd.exe
      /C reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction" /f /v 2147735503 /t REG_SZ /d 6
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2568
    - - \??\c:\windows\SysWOW64\reg.exe
        
        reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction" /f /v 2147735503 /t REG_SZ /d 6
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:4852
- - C:\Windows\SysWOW64\forfiles.exe
    forfiles /p c:\windows\system32 /m calc.exe /c "cmd /C reg add \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction\" /f /v 2147814524 /t REG_SZ /d 6"
    3⤵
    - Indirect Command Execution
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1356
  - - C:\Windows\SysWOW64\cmd.exe
      /C reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction" /f /v 2147814524 /t REG_SZ /d 6
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:1228
    - - \??\c:\windows\SysWOW64\reg.exe
        
        reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction" /f /v 2147814524 /t REG_SZ /d 6
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:944
- - C:\Windows\SysWOW64\forfiles.exe
    forfiles /p c:\windows\system32 /m where.exe /c "cmd /C reg add \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction\" /f /v 2147780199 /t REG_SZ /d 6"
    3⤵
    - Indirect Command Execution
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1872
  - - C:\Windows\SysWOW64\cmd.exe
      /C reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction" /f /v 2147780199 /t REG_SZ /d 6
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2200
    - - \??\c:\windows\SysWOW64\reg.exe
        
        reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction" /f /v 2147780199 /t REG_SZ /d 6
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:800
- - C:\Windows\SysWOW64\forfiles.exe
    forfiles /p c:\windows\system32 /m waitfor.exe /c "cmd /C reg add \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction\" /f /v 2147812831 /t REG_SZ /d 6"
    3⤵
    - Indirect Command Execution
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:652
  - - C:\Windows\SysWOW64\cmd.exe
      /C reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction" /f /v 2147812831 /t REG_SZ /d 6
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:3560
    - - \??\c:\windows\SysWOW64\reg.exe
        
        reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Threats\ThreatIDDefaultAction" /f /v 2147812831 /t REG_SZ /d 6
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:4928
- - C:\Windows\SysWOW64\forfiles.exe
    forfiles /p c:\windows\system32 /m help.exe /c "cmd /C powershell start-process -WindowStyle Hidden gpupdate.exe /force"
    3⤵
    - Indirect Command Execution
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4548
  - - C:\Windows\SysWOW64\cmd.exe
      /C powershell start-process -WindowStyle Hidden gpupdate.exe /force
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:5012
    - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        
        powershell start-process -WindowStyle Hidden gpupdate.exe /force
        5⤵
        Command and Scripting Interpreter: PowerShell
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:4504
      - C:\Windows\SysWOW64\gpupdate.exe
        
        "C:\Windows\system32\gpupdate.exe" /force
        6⤵
        System Location Discovery: System Language Discovery
        
        PID:3760
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4104 -s 660
  2⤵
  - Program crash
  PID:1292

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4104 -ip 4104
1⤵
PID:664

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Indirect Command Execution

T1202

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

__PSScriptPolicyTest_ivcs4mz5.gzw.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ivcs4mz5.gzw.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

Submit Download

memory/4104-28-0x0000000000C80000-0x0000000001323000-memory.dmp

Download

memory/4104-24-0x0000000010000000-0x0000000010C24000-memory.dmp

Download

memory/4104-0-0x0000000000C80000-0x0000000001323000-memory.dmp

Download

memory/4504-16-0x00000000062C0000-0x00000000062DE000-memory.dmp

Download

memory/4504-5-0x0000000005CA0000-0x0000000005D06000-memory.dmp

Download

memory/4504-4-0x0000000005C30000-0x0000000005C96000-memory.dmp

Download

memory/4504-15-0x0000000005E10000-0x0000000006164000-memory.dmp

Download

memory/4504-3-0x0000000005330000-0x0000000005352000-memory.dmp

Download

memory/4504-17-0x0000000006300000-0x000000000634C000-memory.dmp

Download

memory/4504-18-0x0000000006870000-0x0000000006906000-memory.dmp

Download

memory/4504-19-0x00000000067D0000-0x00000000067EA000-memory.dmp

Download

memory/4504-20-0x0000000006820000-0x0000000006842000-memory.dmp

Download

memory/4504-21-0x00000000078A0000-0x0000000007E44000-memory.dmp

Download

memory/4504-2-0x0000000005600000-0x0000000005C28000-memory.dmp

Download

memory/4504-1-0x00000000029B0000-0x00000000029E6000-memory.dmp

Download