bdb0d5835a7fd3155236cf95f81f0040fcc985ce9507ccca47362189543d8e52

General

Target

bdb0d5835a7fd3155236cf95f81f0040fcc985ce9507ccca47362189543d8e52.exe
Size

9KB
MD5

76dfc88564964733df36d7aab2f878e8
SHA1

db0f354e70c789bc42a05b4960438ae9d304b696
SHA256

bdb0d5835a7fd3155236cf95f81f0040fcc985ce9507ccca47362189543d8e52
SHA512

2807a878e13f29dd1822567d5b833dcc623a68740b0fa0fcfc49c70064e87b1884d8fc31e0ba15dd340c402d780f3ec5e1956850b156b2fd1be2f696aa993384
SSDEEP

192:eqyd2h6S44YvTDQAItHmKkZZQWRBvJcOYwB:eqyd2h6GGTDlIVmKo/RBxc6B

Score

10^/10

adware persistence stealer upx

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe"	bdb0d5835a7fd3155236cf95f81f0040fcc985ce9507ccca47362189543d8e52.exe

Modifies system executable filetype association 2 TTPs 1 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1042

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Users\\Admin\\cftmon.exe \"%1\" %*"	bdb0d5835a7fd3155236cf95f81f0040fcc985ce9507ccca47362189543d8e52.exe

Drops file in Drivers directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\drivers\spools.exe	bdb0d5835a7fd3155236cf95f81f0040fcc985ce9507ccca47362189543d8e52.exe
File opened for modification	C:\Windows\SysWOW64\drivers\spools.exe	bdb0d5835a7fd3155236cf95f81f0040fcc985ce9507ccca47362189543d8e52.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Schedule\ImagePath = "C:\\Windows\\system32\\drivers\\spools.exe"	bdb0d5835a7fd3155236cf95f81f0040fcc985ce9507ccca47362189543d8e52.exe

UPX packed file 1 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/3028-135-0x0000000000400000-0x000000000040F000-memory.dmp	upx

Adds Run key to start application 2 TTPs 6 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe"	bdb0d5835a7fd3155236cf95f81f0040fcc985ce9507ccca47362189543d8e52.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\cftmon.exe"	bdb0d5835a7fd3155236cf95f81f0040fcc985ce9507ccca47362189543d8e52.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	reg.exe
Key deleted	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe"	bdb0d5835a7fd3155236cf95f81f0040fcc985ce9507ccca47362189543d8e52.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\cftmon.exe"	bdb0d5835a7fd3155236cf95f81f0040fcc985ce9507ccca47362189543d8e52.exe

Installs/modifies Browser Helper Object 2 TTPs 3 IoCs

BHOs are DLL modules which act as plugins for Internet Explorer.

stealer adware

Modify Registry

T1112

Browser Extensions

T1176

description	ioc	Process
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C}	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects	reg.exe

Modifies WinLogon 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UIHost = "logonui.exe"	bdb0d5835a7fd3155236cf95f81f0040fcc985ce9507ccca47362189543d8e52.exe

Modifies registry class 1 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Users\\Admin\\cftmon.exe \"%1\" %*"	bdb0d5835a7fd3155236cf95f81f0040fcc985ce9507ccca47362189543d8e52.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3028 wrote to memory of 2124	3028	bdb0d5835a7fd3155236cf95f81f0040fcc985ce9507ccca47362189543d8e52.exe	80
PID 3028 wrote to memory of 2124	3028	bdb0d5835a7fd3155236cf95f81f0040fcc985ce9507ccca47362189543d8e52.exe	80
PID 3028 wrote to memory of 2124	3028	bdb0d5835a7fd3155236cf95f81f0040fcc985ce9507ccca47362189543d8e52.exe	80
PID 3028 wrote to memory of 1936	3028	bdb0d5835a7fd3155236cf95f81f0040fcc985ce9507ccca47362189543d8e52.exe	84
PID 3028 wrote to memory of 1936	3028	bdb0d5835a7fd3155236cf95f81f0040fcc985ce9507ccca47362189543d8e52.exe	84
PID 3028 wrote to memory of 1936	3028	bdb0d5835a7fd3155236cf95f81f0040fcc985ce9507ccca47362189543d8e52.exe	84
PID 3028 wrote to memory of 1868	3028	bdb0d5835a7fd3155236cf95f81f0040fcc985ce9507ccca47362189543d8e52.exe	82
PID 3028 wrote to memory of 1868	3028	bdb0d5835a7fd3155236cf95f81f0040fcc985ce9507ccca47362189543d8e52.exe	82
PID 3028 wrote to memory of 1868	3028	bdb0d5835a7fd3155236cf95f81f0040fcc985ce9507ccca47362189543d8e52.exe	82

C:\Users\Admin\AppData\Local\Temp\bdb0d5835a7fd3155236cf95f81f0040fcc985ce9507ccca47362189543d8e52.exe
"C:\Users\Admin\AppData\Local\Temp\bdb0d5835a7fd3155236cf95f81f0040fcc985ce9507ccca47362189543d8e52.exe"
1⤵
- Modifies WinLogon for persistence
- Modifies system executable filetype association
- Drops file in Drivers directory
- Sets service image path in registry
- Adds Run key to start application
- Modifies WinLogon
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3028
- C:\Windows\SysWOW64\reg.exe
  reg delete "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects" /f
  2⤵
  - Installs/modifies Browser Helper Object
  PID:2124
- C:\Windows\SysWOW64\reg.exe
  reg delete "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /f
  2⤵
  - Adds Run key to start application
  PID:1868
- C:\Windows\SysWOW64\reg.exe
  reg delete "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /f
  2⤵
  - Adds Run key to start application
  PID:1936