53ac869b017b0243d6168543dcb8e8133401d43448f265976f38659cde1e5333

General

Target
53ac869b017b0243d6168543dcb8e8133401d43448f265976f38659cde1e5333.exe
Size 1016KB
Sample260718-h3s7vsft7v
SHA256 53ac869b017b0243d6168543dcb8e8133401d43448f265976f38659cde1e5333
MD5 65045604ddfe38922b7e621b8e18416d
SHA1 d98192624f29bfec36595d44ab2b6d99c63a501d
SHA512 95ed93a547754d94ca17359b1d4dd6e5211ac3a767fcc995afb67fa0ebb77e0a72e49119cc04f3b7180516db6c9164e70a7714efd091cbd26f8cca11778eddbd
SSDEEP 3072:YY6/sm1dzeY6/sm1dzG6bLzD0SVWhIy70Y6/sm1dzG6bLzD0SVWhIy70Y6/sm1dO:lgngmL4a7ZgmL4a7ZgmL4a7Zgm
TLSH
T15325B902A23AF0F4F418C872581761E636C63D32590EEE177159BF3B78721D1A969B2F
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

adware defense_evasion discovery execution persistence spyware

Malware Config

Signatures

Modifies visibility of file extensions in Explorer 2 TTPs 2 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3611646547-550105268-947503007-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	mstask.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3611646547-550105268-947503007-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	53ac869b017b0243d6168543dcb8e8133401d43448f265976f38659cde1e5333.exe

Modifies visibility of hidden/system files in Explorer 2 TTPs 2 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3611646547-550105268-947503007-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	mstask.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3611646547-550105268-947503007-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	53ac869b017b0243d6168543dcb8e8133401d43448f265976f38659cde1e5333.exe

Executes dropped EXE 1 IoCs

pid	Process
3944	mstask.exe

Impair Defenses: Safe Mode Boot 1 TTPs 7 IoCs

defense_evasion

Safe Mode Boot

T1562.009

description	ioc	Process
Key deleted	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\UserManager	reg.exe
Key deleted	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\WinDefend	reg.exe
Key deleted	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\CBDHSvc	reg.exe
Key deleted	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\iai2c.sys	reg.exe
Key deleted	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\Power	reg.exe
Key deleted	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\ProfSvc	reg.exe
Key deleted	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\SerCx2.sys	reg.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432NODE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN	mstask.exe
Key deleted	\REGISTRY\USER\S-1-5-21-3611646547-550105268-947503007-1000\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN	mstask.exe

Drops desktop.ini file(s) 3 IoCs

description	ioc	Process
File opened for modification	C:\Users\Public\Pictures\desktop.ini	explorer.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	explorer.exe
File opened for modification	C:\Users\Public\desktop.ini	explorer.exe

Drops file in Windows directory 12 IoCs

description	ioc	Process
File opened for modification	C:\WINDOWS\system	53ac869b017b0243d6168543dcb8e8133401d43448f265976f38659cde1e5333.exe
File created	C:\WINDOWS\system\mstask.exe	53ac869b017b0243d6168543dcb8e8133401d43448f265976f38659cde1e5333.exe
File opened for modification	C:\WINDOWS\system\mstask.exe	53ac869b017b0243d6168543dcb8e8133401d43448f265976f38659cde1e5333.exe
File created	C:\WINDOWS\system.exe	mstask.exe
File created	C:\WINDOWS\system.exe	53ac869b017b0243d6168543dcb8e8133401d43448f265976f38659cde1e5333.exe
File opened for modification	C:\WINDOWS\system.exe	mstask.exe
File opened for modification	C:\WINDOWS\SysWOW64	mstask.exe
File opened for modification	C:\WINDOWS\SysWOW64	53ac869b017b0243d6168543dcb8e8133401d43448f265976f38659cde1e5333.exe
File created	C:\WINDOWS\system32.exe	53ac869b017b0243d6168543dcb8e8133401d43448f265976f38659cde1e5333.exe
File created	C:\WINDOWS\system32.exe	mstask.exe
File opened for modification	C:\WINDOWS\system32.exe	53ac869b017b0243d6168543dcb8e8133401d43448f265976f38659cde1e5333.exe
File opened for modification	C:\WINDOWS\system	mstask.exe

Executes a command shell one-liner 1 TTPs 4 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
5364	cmd.exe
3808	cmd.exe
5492	cmd.exe
5584	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 11 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	53ac869b017b0243d6168543dcb8e8133401d43448f265976f38659cde1e5333.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mstask.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe

Modifies Internet Explorer settings 1 TTPs 2 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3611646547-550105268-947503007-1000\Software\Microsoft\Internet Explorer\Toolbar	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3611646547-550105268-947503007-1000\Software\Microsoft\Internet Explorer\Toolbar\Locked = "1"	explorer.exe

Modifies registry class 24 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	explorer.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{A0953C92-50DC-43bf-BE83-3742FED03C9C}\Instance\	explorer.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A8CDFF1C-4878-43be-B5FD-F8091C1C60D0}\Instance\	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3611646547-550105268-947503007-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3611646547-550105268-947503007-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3611646547-550105268-947503007-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\MRUListEx = ffffffff	explorer.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{374DE290-123F-4565-9164-39C4925E467B}\Instance\	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3611646547-550105268-947503007-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3611646547-550105268-947503007-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3611646547-550105268-947503007-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 0202	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3611646547-550105268-947503007-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\NodeSlot = "2"	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3611646547-550105268-947503007-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\Shell	explorer.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1CF1260C-4DD0-4ebb-811F-33C572699FDE}\Instance\	explorer.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{A8CDFF1C-4878-43be-B5FD-F8091C1C60D0}\Instance\	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3611646547-550105268-947503007-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1 = 3a001f481cffcda87848be43b5fdf8091c1c60d0260001002600efbe11000000db6bc4a8ad0fdd01c358cd9fb40fdd0163d735a1b40fdd0114000000	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3611646547-550105268-947503007-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3611646547-550105268-947503007-1000_Classes\NotificationData	explorer.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{B4BFCC3A-DB2C-424C-B029-7FE99A87C641}\Instance\	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3611646547-550105268-947503007-1000_Classes\Local Settings	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3611646547-550105268-947503007-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3611646547-550105268-947503007-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 0100000000000000ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3611646547-550105268-947503007-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3611646547-550105268-947503007-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\Shell\SniffedFolderType = "Documents"	explorer.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{3ADD1653-EB32-4cb0-BBD7-DFA0ABB5ACCA}\Instance\	explorer.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3928	explorer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3928	explorer.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
4244	53ac869b017b0243d6168543dcb8e8133401d43448f265976f38659cde1e5333.exe
3928	explorer.exe
3944	mstask.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4244 wrote to memory of 2120	4244	53ac869b017b0243d6168543dcb8e8133401d43448f265976f38659cde1e5333.exe	89
PID 4244 wrote to memory of 5364	4244	53ac869b017b0243d6168543dcb8e8133401d43448f265976f38659cde1e5333.exe	90
PID 4244 wrote to memory of 5584	4244	53ac869b017b0243d6168543dcb8e8133401d43448f265976f38659cde1e5333.exe	91
PID 5584 wrote to memory of 3260	5584	cmd.exe	95
PID 5364 wrote to memory of 3196	5364	cmd.exe	96
PID 4244 wrote to memory of 3944	4244	53ac869b017b0243d6168543dcb8e8133401d43448f265976f38659cde1e5333.exe	99
PID 3944 wrote to memory of 3808	3944	mstask.exe	100
PID 3944 wrote to memory of 5492	3944	mstask.exe	101
PID 3808 wrote to memory of 5772	3808	cmd.exe	104
PID 5492 wrote to memory of 4640	5492	cmd.exe	105

C:\Users\Admin\AppData\Local\Temp\53ac869b017b0243d6168543dcb8e8133401d43448f265976f38659cde1e5333.exe
"C:\Users\Admin\AppData\Local\Temp\53ac869b017b0243d6168543dcb8e8133401d43448f265976f38659cde1e5333.exe"
1⤵
- Modifies visibility of file extensions in Explorer
- Modifies visibility of hidden/system files in Explorer
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4244
- C:\Windows\SysWOW64\explorer.exe
  explorer =53ac869b017b0243d6168543dcb8e8133401d43448f265976f38659cde1e5333
  2⤵
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  PID:2120
- C:\Windows\SysWOW64\cmd.exe
  cmd /c reg delete HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SafeBoot\Minimal /f
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5364
- - C:\Windows\SysWOW64\reg.exe
    reg delete HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SafeBoot\Minimal /f
    3⤵
    - Impair Defenses: Safe Mode Boot
    - System Location Discovery: System Language Discovery
    PID:3196
- C:\Windows\SysWOW64\cmd.exe
  cmd /c reg delete HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SafeBoot\Network /f
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5584
- - C:\Windows\SysWOW64\reg.exe
    reg delete HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SafeBoot\Network /f
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3260
- C:\WINDOWS\system\mstask.exe
  C:\WINDOWS\system\mstask.exe
  2⤵
  - Modifies visibility of file extensions in Explorer
  - Modifies visibility of hidden/system files in Explorer
  - Executes dropped EXE
  - 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:3944
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c reg delete HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SafeBoot\Minimal /f
    3⤵
    - Executes a command shell one-liner
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3808
  - - C:\Windows\SysWOW64\reg.exe
      reg delete HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SafeBoot\Minimal /f
      4⤵
      System Location Discovery: System Language Discovery
      PID:5772
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c reg delete HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SafeBoot\Network /f
    3⤵
    - Executes a command shell one-liner
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:5492
  - - C:\Windows\SysWOW64\reg.exe
      reg delete HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SafeBoot\Network /f
      4⤵
      System Location Discovery: System Language Discovery
      PID:4640

C:\Windows\explorer.exe
C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
1⤵
- Drops desktop.ini file(s)
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
PID:3928

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:1496

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Hide Artifacts

2

T1564

Hidden Files and Directories

2

T1564.001

Impair Defenses

1

T1562

Safe Mode Boot

Modify Registry

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

mstask.exe

Path C:\Windows\System\mstask.exe
Size 1016KB
SHA256 53ac869b017b0243d6168543dcb8e8133401d43448f265976f38659cde1e5333
MD5 65045604ddfe38922b7e621b8e18416d
SHA1 d98192624f29bfec36595d44ab2b6d99c63a501d
SHA512 95ed93a547754d94ca17359b1d4dd6e5211ac3a767fcc995afb67fa0ebb77e0a72e49119cc04f3b7180516db6c9164e70a7714efd091cbd26f8cca11778eddbd
SSDEEP 3072:YY6/sm1dzeY6/sm1dzG6bLzD0SVWhIy70Y6/sm1dzG6bLzD0SVWhIy70Y6/sm1dO:lgngmL4a7ZgmL4a7ZgmL4a7Zgm
TLSH
T15325B902A23AF0F4F418C872581761E636C63D32590EEE177159BF3B78721D1A969B2F
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3928-17-0x0000000003590000-0x00000000037EF000-memory.dmp

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memory/3944-28-0x0000000000400000-0x00000000004FE000-memory.dmp

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memory/4244-0-0x0000000000400000-0x00000000004FE000-memory.dmp

Download

memory/4244-26-0x0000000000400000-0x00000000004FE000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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