joker | 97ee6ce417a5aa0c0264056e7073407e97738b55645bfb03cf2e2ae34173a2c2

pid	Process
4620	attrib.exe
4472	attrib.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	97ee6ce417a5aa0c0264056e7073407e97738b55645bfb03cf2e2ae34173a2c2.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	inl4A35.tmp

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\hsdfasd = "\"C:\\Users\\Admin\\AppData\\Roaming\\redload\\tmp.\\a.{971C5380-92A0-5A69-B3EE-C3002B33309E}\" hh.exe"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\GrpConv = "grpconv -o"	rundll32.exe

Enumerates connected drives 3 TTPs 1 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

Peripheral Device Discovery

T1120

System Information Discovery

description	ioc	Process
File opened (read-only)	\??\D:	cmd.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\PROGRA~1\INTERN~1\ieframe.dll	cmd.exe
File opened for modification	C:\PROGRA~1\INTERN~1\ieframe.dll	cmd.exe

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	runonce.exe
Key opened	\Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0	runonce.exe

Modifies Internet Explorer settings 1 TTPs 22 IoCs

adware spyware

Modify Registry

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\International\CpMRU	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\DOMStorage\cnkankan.com	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\Main\WindowsSearch	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
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage\cnkankan.com	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{8C2FEC1A-431D-11ED-B696-D2D0017C8629} = "0"	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\International\CpMRU\InitHits = "100"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\International\CpMRU\Enable = "1"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage\cnkankan.com\NumberOfSubdomains = "1"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\International\CpMRU\Size = "10"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\International\CpMRU\Factor = "20"	IEXPLORE.EXE
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Internet Explorer\Main	reg.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Main	reg.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\Recovery\AdminActive	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

Modifies Internet Explorer start page 1 TTPs 2 IoCs

stealer

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Internet Explorer\Main\Start Page = "http://www.82133.com/?S"	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Start Page = "http://www.82133.com/?S"	reg.exe

Modifies registry class 9 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{971C5380-92A0-5A69-B3EE-C3002B33309E}\Shell\open(&H)\Command	reg.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID	reg.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{971C5380-92A0-5A69-B3EE-C3002B33309E}\Shell	reg.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{971C5380-92A0-5A69-B3EE-C3002B33309E}\Shell\open(&H)\Command\ = "wscript -e:vbs \"C:\\Users\\Admin\\AppData\\Roaming\\redload\\3.bat\""	reg.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{971C5380-92A0-5A69-B3EE-C3002B33309E}	reg.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{971C5380-92A0-5A69-B3EE-C3002B33309E}\IsShortCut	reg.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node	reg.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{971C5380-92A0-5A69-B3EE-C3002B33309E}	reg.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{971C5380-92A0-5A69-B3EE-C3002B33309E}\Shell\open(&H)	reg.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	736	97ee6ce417a5aa0c0264056e7073407e97738b55645bfb03cf2e2ae34173a2c2.exe
Token: SeIncBasePriorityPrivilege	4088	inl4A35.tmp

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4032	iexplore.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4032	iexplore.exe
4032	iexplore.exe
4856	IEXPLORE.EXE
4856	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 59 IoCs

description	pid	Process	procid_target
PID 736 wrote to memory of 4628	736	97ee6ce417a5aa0c0264056e7073407e97738b55645bfb03cf2e2ae34173a2c2.exe	90
PID 736 wrote to memory of 4628	736	97ee6ce417a5aa0c0264056e7073407e97738b55645bfb03cf2e2ae34173a2c2.exe	90
PID 736 wrote to memory of 4628	736	97ee6ce417a5aa0c0264056e7073407e97738b55645bfb03cf2e2ae34173a2c2.exe	90
PID 4628 wrote to memory of 2968	4628	cmd.exe	92
PID 4628 wrote to memory of 2968	4628	cmd.exe	92
PID 4628 wrote to memory of 2968	4628	cmd.exe	92
PID 2968 wrote to memory of 8	2968	cmd.exe	94
PID 2968 wrote to memory of 8	2968	cmd.exe	94
PID 2968 wrote to memory of 8	2968	cmd.exe	94
PID 2968 wrote to memory of 4432	2968	cmd.exe	95
PID 2968 wrote to memory of 4432	2968	cmd.exe	95
PID 2968 wrote to memory of 4432	2968	cmd.exe	95
PID 2968 wrote to memory of 2548	2968	cmd.exe	96
PID 2968 wrote to memory of 2548	2968	cmd.exe	96
PID 2968 wrote to memory of 2548	2968	cmd.exe	96
PID 2968 wrote to memory of 1852	2968	cmd.exe	97
PID 2968 wrote to memory of 1852	2968	cmd.exe	97
PID 2968 wrote to memory of 1852	2968	cmd.exe	97
PID 2968 wrote to memory of 2296	2968	cmd.exe	98
PID 2968 wrote to memory of 2296	2968	cmd.exe	98
PID 2968 wrote to memory of 2296	2968	cmd.exe	98
PID 2968 wrote to memory of 4620	2968	cmd.exe	99
PID 2968 wrote to memory of 4620	2968	cmd.exe	99
PID 2968 wrote to memory of 4620	2968	cmd.exe	99
PID 2968 wrote to memory of 4472	2968	cmd.exe	100
PID 2968 wrote to memory of 4472	2968	cmd.exe	100
PID 2968 wrote to memory of 4472	2968	cmd.exe	100
PID 2968 wrote to memory of 4348	2968	cmd.exe	101
PID 2968 wrote to memory of 4348	2968	cmd.exe	101
PID 2968 wrote to memory of 4348	2968	cmd.exe	101
PID 2968 wrote to memory of 3988	2968	cmd.exe	102
PID 2968 wrote to memory of 3988	2968	cmd.exe	102
PID 2968 wrote to memory of 3988	2968	cmd.exe	102
PID 4348 wrote to memory of 4904	4348	rundll32.exe	103
PID 4348 wrote to memory of 4904	4348	rundll32.exe	103
PID 4348 wrote to memory of 4904	4348	rundll32.exe	103
PID 736 wrote to memory of 4088	736	97ee6ce417a5aa0c0264056e7073407e97738b55645bfb03cf2e2ae34173a2c2.exe	104
PID 736 wrote to memory of 4088	736	97ee6ce417a5aa0c0264056e7073407e97738b55645bfb03cf2e2ae34173a2c2.exe	104
PID 736 wrote to memory of 4088	736	97ee6ce417a5aa0c0264056e7073407e97738b55645bfb03cf2e2ae34173a2c2.exe	104
PID 4904 wrote to memory of 4256	4904	runonce.exe	105
PID 4904 wrote to memory of 4256	4904	runonce.exe	105
PID 4904 wrote to memory of 4256	4904	runonce.exe	105
PID 2968 wrote to memory of 4316	2968	cmd.exe	107
PID 2968 wrote to memory of 4316	2968	cmd.exe	107
PID 2968 wrote to memory of 4316	2968	cmd.exe	107
PID 4316 wrote to memory of 4032	4316	cmd.exe	109
PID 4316 wrote to memory of 4032	4316	cmd.exe	109
PID 4316 wrote to memory of 2724	4316	cmd.exe	110
PID 4316 wrote to memory of 2724	4316	cmd.exe	110
PID 4316 wrote to memory of 2724	4316	cmd.exe	110
PID 736 wrote to memory of 4160	736	97ee6ce417a5aa0c0264056e7073407e97738b55645bfb03cf2e2ae34173a2c2.exe	111
PID 736 wrote to memory of 4160	736	97ee6ce417a5aa0c0264056e7073407e97738b55645bfb03cf2e2ae34173a2c2.exe	111
PID 736 wrote to memory of 4160	736	97ee6ce417a5aa0c0264056e7073407e97738b55645bfb03cf2e2ae34173a2c2.exe	111
PID 4032 wrote to memory of 4856	4032	iexplore.exe	113
PID 4032 wrote to memory of 4856	4032	iexplore.exe	113
PID 4032 wrote to memory of 4856	4032	iexplore.exe	113
PID 4088 wrote to memory of 3700	4088	inl4A35.tmp	116
PID 4088 wrote to memory of 3700	4088	inl4A35.tmp	116
PID 4088 wrote to memory of 3700	4088	inl4A35.tmp	116

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

pid	Process
4620	attrib.exe
4472	attrib.exe

C:\Users\Admin\AppData\Local\Temp\97ee6ce417a5aa0c0264056e7073407e97738b55645bfb03cf2e2ae34173a2c2.exe
"C:\Users\Admin\AppData\Local\Temp\97ee6ce417a5aa0c0264056e7073407e97738b55645bfb03cf2e2ae34173a2c2.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:736
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\start_max_bat.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4628
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /K C:\Users\Admin\AppData\Roaming\redload\1.bat
    3⤵
    - Enumerates connected drives
    - Drops file in Program Files directory
    - Suspicious use of WriteProcessMemory
    PID:2968
  - - C:\Windows\SysWOW64\reg.exe
      reg add "HKLM\Software\Microsoft\Internet Explorer\Main" /v "Start Page" /d ""http://www.82133.com/?S"" /f
      4⤵
      Modifies Internet Explorer settings
      Modifies Internet Explorer start page
      PID:8
  - - C:\Windows\SysWOW64\reg.exe
      reg add "HKCU\Software\Microsoft\Internet Explorer\Main" /v "Start Page" /d ""http://www.82133.com/?S"" /f
      4⤵
      Modifies Internet Explorer settings
      Modifies Internet Explorer start page
      PID:4432
  - - C:\Windows\SysWOW64\reg.exe
      reg add "HKCU\Software\tmp" /v "key" /d ""http://www.82133.com/?S"" /f
      4⤵
      PID:2548
  - - C:\Windows\SysWOW64\reg.exe
      reg add "HKCR\CLSID\{971C5380-92A0-5A69-B3EE-C3002B33309E}" /v "IsShortCut" /d "" /f
      4⤵
      Modifies registry class
      PID:1852
  - - C:\Windows\SysWOW64\reg.exe
      reg add "HKCR\CLSID\{971C5380-92A0-5A69-B3EE-C3002B33309E}\Shell\open(&H)\Command" /v "" /d "wscript -e:vbs ""C:\Users\Admin\AppData\Roaming\redload\3.bat""" /f
      4⤵
      Modifies registry class
      PID:2296
  - - C:\Windows\SysWOW64\attrib.exe
      attrib +s +h C:\Users\Admin\AppData\Roaming\redload\tmp\a.{971C5380-92A0-5A69-B3EE-C3002B33309E}
      4⤵
      Sets file to hidden
      Views/modifies file attributes
      PID:4620
  - - C:\Windows\SysWOW64\attrib.exe
      attrib +s +h C:\Users\Admin\AppData\Roaming\redload\tmp
      4⤵
      Sets file to hidden
      Views/modifies file attributes
      PID:4472
  - - C:\Windows\SysWOW64\rundll32.exe
      rundll32 syssetup,SetupInfObjectInstallAction DefaultInstall 128 C:\Users\Admin\AppData\Roaming\redload\2.inf
      4⤵
      Adds Run key to start application
      Suspicious use of WriteProcessMemory
      PID:4348
    - - C:\Windows\SysWOW64\runonce.exe
        
        "C:\Windows\system32\runonce.exe" -r
        5⤵
        Checks processor information in registry
        Suspicious use of WriteProcessMemory
        
        PID:4904
      - C:\Windows\SysWOW64\grpconv.exe
        
        "C:\Windows\System32\grpconv.exe" -o
        6⤵
        
        PID:4256
  - - C:\Windows\SysWOW64\rundll32.exe
      rundll32 D:\VolumeDH\inj.dat,MainLoad
      4⤵
      PID:3988
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /K C:\Users\Admin\AppData\Roaming\redload\2.bat
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4316
    - - C:\PROGRA~1\INTERN~1\iexplore.exe
        
        C:\PROGRA~1\INTERN~1\IEXPLORE.EXE http://www.cnkankan.com/?82133
        5⤵
        Modifies Internet Explorer settings
        Suspicious use of FindShellTrayWindow
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:4032
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4032 CREDAT:17410 /prefetch:2
        6⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:4856
    - - C:\Windows\SysWOW64\rundll32.exe
        
        rundll32 syssetup,SetupInfObjectInstallAction DefaultInstall 128 C:\Users\Admin\AppData\Roaming\redload\1.inf
        5⤵
        
        PID:2724
- C:\Users\Admin\AppData\Local\Temp\inl4A35.tmp
  C:\Users\Admin\AppData\Local\Temp\inl4A35.tmp
  2⤵
  - Executes dropped EXE
  - Checks computer location settings
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4088
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\inl4A35.tmp > nul
    3⤵
    PID:3700
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\97EE6C~1.EXE > nul
  2⤵
  PID:4160

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

System Information Discovery