7ff2c3acbb884ead411c8b9f0df5b0ca5038333bdf872cb37d5e7eec4ac96b6f

Analysis

max time kernel
149s
max time network
128s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
18-01-2025 15:12

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General

Target

The-MALWARE-Repo-master/Email-Worm/Brontok.exe
Size

106KB
MD5

d7506150617460e34645025f1ca2c74b
SHA1

5e7d5daf73a72473795d591f831e8a2054947668
SHA256

941ebf1dc12321bbe430994a55f6e22a1b83cea2fa7d281484ea2dab06353112
SHA512

69e0bd07a8bdbfe066593cdd81acd530b3d12b21e637c1af511b8fee447831b8d822065c5a74a477fe6590962ceff8d64d83ae9c41efd930636921d4d6567f6f
SSDEEP

768:i9R/zAKUQfZw7j4KBHZD8f5R3ETmv48Xxh04UwQaMzl6G1gNov35BMC:0AcwPf5D8rUTmnX9maQ6SgM5

Score

10^/10

discovery evasion persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 6 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe \"C:\\Windows\\eksplorasi.pif\""	Brontok.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe \"C:\\Windows\\eksplorasi.pif\""	smss.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe \"C:\\Windows\\eksplorasi.pif\""	winlogon.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe \"C:\\Windows\\eksplorasi.pif\""	services.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe \"C:\\Windows\\eksplorasi.pif\""	lsass.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe \"C:\\Windows\\eksplorasi.pif\""	inetinfo.exe

Modifies visibility of file extensions in Explorer 2 TTPs 6 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	Brontok.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	smss.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	winlogon.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	services.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	lsass.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	inetinfo.exe

Modifies visiblity of hidden/system files in Explorer 2 TTPs 6 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	Brontok.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	smss.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	winlogon.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	services.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	lsass.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	inetinfo.exe

Disables RegEdit via registry modification 12 IoCs

evasion

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "0"	Brontok.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "0"	smss.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "0"	winlogon.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "0"	services.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "0"	lsass.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	inetinfo.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	Brontok.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	smss.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	winlogon.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	services.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	lsass.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "0"	inetinfo.exe

Disables cmd.exe use via registry modification 6 IoCs

evasion

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableCMD = "0"	lsass.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableCMD = "0"	inetinfo.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableCMD = "0"	Brontok.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableCMD = "0"	smss.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableCMD = "0"	winlogon.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableCMD = "0"	services.exe

Drops file in Drivers directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts-Denied By-Admin.com	inetinfo.exe
File created	C:\Windows\System32\drivers\etc\hosts-Denied By-Admin.com	inetinfo.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Empty.pif	smss.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Empty.pif	smss.exe

Executes dropped EXE 5 IoCs

pid	Process
2608	smss.exe
1484	winlogon.exe
2800	services.exe
2984	lsass.exe
1680	inetinfo.exe

Loads dropped DLL 10 IoCs

pid	Process
2828	Brontok.exe
2828	Brontok.exe
2608	smss.exe
2608	smss.exe
2608	smss.exe
2608	smss.exe
2608	smss.exe
2608	smss.exe
2608	smss.exe
2608	smss.exe

Adds Run key to start application 2 TTPs 12 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Bron-Spizaetus = "\"C:\\Windows\\ShellNew\\bronstab.exe\""	Brontok.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Bron-Spizaetus = "\"C:\\Windows\\ShellNew\\bronstab.exe\""	smss.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\Tok-Cirrhatus = "\"C:\\Users\\Admin\\AppData\\Local\\smss.exe\""	smss.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Bron-Spizaetus = "\"C:\\Windows\\ShellNew\\bronstab.exe\""	services.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Bron-Spizaetus = "\"C:\\Windows\\ShellNew\\bronstab.exe\""	lsass.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\Tok-Cirrhatus = "\"C:\\Users\\Admin\\AppData\\Local\\smss.exe\""	Brontok.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Bron-Spizaetus = "\"C:\\Windows\\ShellNew\\bronstab.exe\""	winlogon.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\Tok-Cirrhatus = "\"C:\\Users\\Admin\\AppData\\Local\\smss.exe\""	winlogon.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\Tok-Cirrhatus = "\"C:\\Users\\Admin\\AppData\\Local\\smss.exe\""	services.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\Tok-Cirrhatus = "\"C:\\Users\\Admin\\AppData\\Local\\smss.exe\""	lsass.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Bron-Spizaetus = "\"C:\\Windows\\ShellNew\\bronstab.exe\""	inetinfo.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\Tok-Cirrhatus = "\"C:\\Users\\Admin\\AppData\\Local\\smss.exe\""	inetinfo.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Admin's Setting.scr	smss.exe
File created	C:\Windows\SysWOW64\Admin's Setting.scr	smss.exe

Drops file in Windows directory 14 IoCs

description	ioc	Process
File created	C:\Windows\ShellNew\bronstab.exe	Brontok.exe
File opened for modification	C:\Windows\eksplorasi.pif	smss.exe
File opened for modification	C:\Windows\eksplorasi.pif	services.exe
File opened for modification	C:\Windows\ShellNew\bronstab.exe	lsass.exe
File opened for modification	C:\Windows\eksplorasi.pif	lsass.exe
File created	C:\Windows\eksplorasi.pif	Brontok.exe
File opened for modification	C:\Windows\ShellNew\bronstab.exe	winlogon.exe
File opened for modification	C:\Windows\ShellNew\bronstab.exe	inetinfo.exe
File opened for modification	C:\Windows\eksplorasi.pif	Brontok.exe
File opened for modification	C:\Windows\ShellNew\bronstab.exe	smss.exe
File opened for modification	C:\Windows\ShellNew\bronstab.exe	services.exe
File opened for modification	C:\Windows\ShellNew\bronstab.exe	Brontok.exe
File opened for modification	C:\Windows\eksplorasi.pif	winlogon.exe
File opened for modification	C:\Windows\eksplorasi.pif	inetinfo.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 9 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	smss.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winlogon.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	services.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	lsass.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Brontok.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	inetinfo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	at.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	at.exe

Modifies system certificate store 2 TTPs 3 IoCs

evasion spyware trojan

Install Root Certificate

T1553.004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\5FB7EE0633E259DBAD0C4C9AE6D38F1A61C7DC25	inetinfo.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\5FB7EE0633E259DBAD0C4C9AE6D38F1A61C7DC25\Blob = 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	inetinfo.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\5FB7EE0633E259DBAD0C4C9AE6D38F1A61C7DC25\Blob = 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	inetinfo.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
2828	Brontok.exe
2608	smss.exe
1484	winlogon.exe
2800	services.exe
2984	lsass.exe
1680	inetinfo.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 2828 wrote to memory of 2676	2828	Brontok.exe	31
PID 2828 wrote to memory of 2676	2828	Brontok.exe	31
PID 2828 wrote to memory of 2676	2828	Brontok.exe	31
PID 2828 wrote to memory of 2676	2828	Brontok.exe	31
PID 2828 wrote to memory of 2608	2828	Brontok.exe	33
PID 2828 wrote to memory of 2608	2828	Brontok.exe	33
PID 2828 wrote to memory of 2608	2828	Brontok.exe	33
PID 2828 wrote to memory of 2608	2828	Brontok.exe	33
PID 2608 wrote to memory of 1484	2608	smss.exe	34
PID 2608 wrote to memory of 1484	2608	smss.exe	34
PID 2608 wrote to memory of 1484	2608	smss.exe	34
PID 2608 wrote to memory of 1484	2608	smss.exe	34
PID 2608 wrote to memory of 1052	2608	smss.exe	35
PID 2608 wrote to memory of 1052	2608	smss.exe	35
PID 2608 wrote to memory of 1052	2608	smss.exe	35
PID 2608 wrote to memory of 1052	2608	smss.exe	35
PID 2608 wrote to memory of 2796	2608	smss.exe	37
PID 2608 wrote to memory of 2796	2608	smss.exe	37
PID 2608 wrote to memory of 2796	2608	smss.exe	37
PID 2608 wrote to memory of 2796	2608	smss.exe	37
PID 2608 wrote to memory of 2800	2608	smss.exe	39
PID 2608 wrote to memory of 2800	2608	smss.exe	39
PID 2608 wrote to memory of 2800	2608	smss.exe	39
PID 2608 wrote to memory of 2800	2608	smss.exe	39
PID 2608 wrote to memory of 2984	2608	smss.exe	40
PID 2608 wrote to memory of 2984	2608	smss.exe	40
PID 2608 wrote to memory of 2984	2608	smss.exe	40
PID 2608 wrote to memory of 2984	2608	smss.exe	40
PID 2608 wrote to memory of 1680	2608	smss.exe	41
PID 2608 wrote to memory of 1680	2608	smss.exe	41
PID 2608 wrote to memory of 1680	2608	smss.exe	41
PID 2608 wrote to memory of 1680	2608	smss.exe	41

C:\Users\Admin\AppData\Local\Temp\The-MALWARE-Repo-master\Email-Worm\Brontok.exe
"C:\Users\Admin\AppData\Local\Temp\The-MALWARE-Repo-master\Email-Worm\Brontok.exe"
1⤵
- Modifies WinLogon for persistence
- Modifies visibility of file extensions in Explorer
- Modifies visiblity of hidden/system files in Explorer
- Disables RegEdit via registry modification
- Disables cmd.exe use via registry modification
- Loads dropped DLL
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2828
- C:\Windows\SysWOW64\explorer.exe
  explorer.exe
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2676
- C:\Users\Admin\AppData\Local\smss.exe
  C:\Users\Admin\AppData\Local\smss.exe
  2⤵
  - Modifies WinLogon for persistence
  - Modifies visibility of file extensions in Explorer
  - Modifies visiblity of hidden/system files in Explorer
  - Disables RegEdit via registry modification
  - Disables cmd.exe use via registry modification
  - Drops startup file
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Drops file in System32 directory
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2608
- - C:\Users\Admin\AppData\Local\winlogon.exe
    C:\Users\Admin\AppData\Local\winlogon.exe
    3⤵
    - Modifies WinLogon for persistence
    - Modifies visibility of file extensions in Explorer
    - Modifies visiblity of hidden/system files in Explorer
    - Disables RegEdit via registry modification
    - Disables cmd.exe use via registry modification
    - Executes dropped EXE
    - Adds Run key to start application
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:1484
- - C:\Windows\SysWOW64\at.exe
    at /delete /y
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1052
- - C:\Windows\SysWOW64\at.exe
    at 17:08 /every:M,T,W,Th,F,S,Su "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\WowTumpeh.com"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2796
- - C:\Users\Admin\AppData\Local\services.exe
    C:\Users\Admin\AppData\Local\services.exe
    3⤵
    - Modifies WinLogon for persistence
    - Modifies visibility of file extensions in Explorer
    - Modifies visiblity of hidden/system files in Explorer
    - Disables RegEdit via registry modification
    - Disables cmd.exe use via registry modification
    - Executes dropped EXE
    - Adds Run key to start application
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:2800
- - C:\Users\Admin\AppData\Local\lsass.exe
    C:\Users\Admin\AppData\Local\lsass.exe
    3⤵
    - Modifies WinLogon for persistence
    - Modifies visibility of file extensions in Explorer
    - Modifies visiblity of hidden/system files in Explorer
    - Disables RegEdit via registry modification
    - Disables cmd.exe use via registry modification
    - Executes dropped EXE
    - Adds Run key to start application
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:2984
- - C:\Users\Admin\AppData\Local\inetinfo.exe
    C:\Users\Admin\AppData\Local\inetinfo.exe
    3⤵
    - Modifies WinLogon for persistence
    - Modifies visibility of file extensions in Explorer
    - Modifies visiblity of hidden/system files in Explorer
    - Disables RegEdit via registry modification
    - Disables cmd.exe use via registry modification
    - Drops file in Drivers directory
    - Executes dropped EXE
    - Adds Run key to start application
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Modifies system certificate store
    - Suspicious use of SetWindowsHookEx
    PID:1680

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Subvert Trust Controls

T1553

Install Root Certificate

T1553.004

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Cab7ED3.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar7EE5.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Local\smss.exe

Filesize
106KB

MD5
d7506150617460e34645025f1ca2c74b

SHA1
5e7d5daf73a72473795d591f831e8a2054947668

SHA256
941ebf1dc12321bbe430994a55f6e22a1b83cea2fa7d281484ea2dab06353112

SHA512
69e0bd07a8bdbfe066593cdd81acd530b3d12b21e637c1af511b8fee447831b8d822065c5a74a477fe6590962ceff8d64d83ae9c41efd930636921d4d6567f6f

Download Submit
C:\Windows\eksplorasi.pif

Filesize
64KB

MD5
89f88ed3f1417d63ff221c7083e0dc32

SHA1
d03142eac2e4b4046d844cc8b9c234bf32354774

SHA256
a621a5dbfb406f3e3397169a89f27399b9b9bedf30a54bf9e198e3eebe17a0b6

SHA512
4fe0fb2bfe6e15980479ad3e497600322b7c3364115e7646773d155d01fa5d4394a2f00e7575375039d18683b44e725c1d37ba8a578643ab74e056dc6e164d3c

Download Submit
memory/1484-139-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1680-216-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1680-163-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1680-145-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2608-118-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2608-122-0x0000000001E60000-0x0000000001E9C000-memory.dmp

Filesize
240KB

Download
memory/2608-160-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2608-144-0x0000000001E60000-0x0000000001E9C000-memory.dmp

Filesize
240KB

Download
memory/2608-60-0x0000000001E60000-0x0000000001E9C000-memory.dmp

Filesize
240KB

Download
memory/2800-97-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2800-161-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2828-91-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2828-159-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2828-96-0x0000000000570000-0x00000000005AC000-memory.dmp

Filesize
240KB

Download
memory/2828-0-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2828-25-0x0000000000570000-0x00000000005AC000-memory.dmp

Filesize
240KB

Download
memory/2828-26-0x0000000000570000-0x00000000005AC000-memory.dmp

Filesize
240KB

Download
memory/2984-162-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads