cfeb1e670dac64b057eec3d0dee1fff018e64e081b5b67dc54f715a672fe229d

General

Target

cfeb1e670dac64b057eec3d0dee1fff018e64e081b5b67dc54f715a672fe229d.exe
Size

1.1MB
MD5

34959373b12605d845f9aaa1b5e6a718
SHA1

dceaabf833dc200642ed945996aef20562d6c5fd
SHA256

cfeb1e670dac64b057eec3d0dee1fff018e64e081b5b67dc54f715a672fe229d
SHA512

984a158d67eecb46526ff15680fda42154bfb974013861c7db5d190ae8ecb7769dc38fef0cb1b67f3a7cf8d0cb33c52f2e560afbca54319b21bbfded6daeb86c
SSDEEP

12288:lenxWYKa5A932NNHoOKGzSDBfy/18Qd1opGJpXWsyFLr7xC76N4bJVVv5LloUEoP:lenMnpquXGzgey5uNwFLr7gBVVvhz1

Score

10^/10

persistence

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 C:\\WINDOWS\\Config\\csrss.exe"	cfeb1e670dac64b057eec3d0dee1fff018e64e081b5b67dc54f715a672fe229d.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	cfeb1e670dac64b057eec3d0dee1fff018e64e081b5b67dc54f715a672fe229d.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	cfeb1e670dac64b057eec3d0dee1fff018e64e081b5b67dc54f715a672fe229d.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\WINDOWS\SysWOW64\MSWINSCK.OCX	cfeb1e670dac64b057eec3d0dee1fff018e64e081b5b67dc54f715a672fe229d.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\WINDOWS\Config\csrss.exe	cfeb1e670dac64b057eec3d0dee1fff018e64e081b5b67dc54f715a672fe229d.exe
File created	C:\WINDOWS\Config\csrss.exe	cfeb1e670dac64b057eec3d0dee1fff018e64e081b5b67dc54f715a672fe229d.exe

Modifies registry class 12 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E8DB602E-6034-3D8F-6723-3382669DC88A}\ = "TokenActivation Class"	cfeb1e670dac64b057eec3d0dee1fff018e64e081b5b67dc54f715a672fe229d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E8DB602E-6034-3D8F-6723-3382669DC88A}\InprocServer32\ThreadingModel = "Free"	cfeb1e670dac64b057eec3d0dee1fff018e64e081b5b67dc54f715a672fe229d.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E8DB602E-6034-3D8F-6723-3382669DC88A}\TypeLib	cfeb1e670dac64b057eec3d0dee1fff018e64e081b5b67dc54f715a672fe229d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E8DB602E-6034-3D8F-6723-3382669DC88A}\VersionIndependentProgID\ = "SppComApi.TokenActivation"	cfeb1e670dac64b057eec3d0dee1fff018e64e081b5b67dc54f715a672fe229d.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E8DB602E-6034-3D8F-6723-3382669DC88A}	cfeb1e670dac64b057eec3d0dee1fff018e64e081b5b67dc54f715a672fe229d.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E8DB602E-6034-3D8F-6723-3382669DC88A}\InprocServer32	cfeb1e670dac64b057eec3d0dee1fff018e64e081b5b67dc54f715a672fe229d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E8DB602E-6034-3D8F-6723-3382669DC88A}\InprocServer32\ = "%SystemRoot%\\SysWow64\\sppcomapi.dll"	cfeb1e670dac64b057eec3d0dee1fff018e64e081b5b67dc54f715a672fe229d.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E8DB602E-6034-3D8F-6723-3382669DC88A}\ProgID	cfeb1e670dac64b057eec3d0dee1fff018e64e081b5b67dc54f715a672fe229d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E8DB602E-6034-3D8F-6723-3382669DC88A}\ProgID\ = "SppComApi.TokenActivation.1"	cfeb1e670dac64b057eec3d0dee1fff018e64e081b5b67dc54f715a672fe229d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E8DB602E-6034-3D8F-6723-3382669DC88A}\TypeLib\ = "{B0C2A63F-AFF8-40E3-B42D-8A542DC909EC}"	cfeb1e670dac64b057eec3d0dee1fff018e64e081b5b67dc54f715a672fe229d.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E8DB602E-6034-3D8F-6723-3382669DC88A}\VersionIndependentProgID	cfeb1e670dac64b057eec3d0dee1fff018e64e081b5b67dc54f715a672fe229d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E8DB602E-6034-3D8F-6723-3382669DC88A}\AppID = "{6D9A7A40-DDCA-414E-B48E-DFB032C03C1B}"	cfeb1e670dac64b057eec3d0dee1fff018e64e081b5b67dc54f715a672fe229d.exe

NTFS ADS 2 IoCs

description	ioc	Process
File created	C:\ProgramData\TEMP:58FB35AD	cfeb1e670dac64b057eec3d0dee1fff018e64e081b5b67dc54f715a672fe229d.exe
File opened for modification	C:\ProgramData\TEMP:58FB35AD	cfeb1e670dac64b057eec3d0dee1fff018e64e081b5b67dc54f715a672fe229d.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: 33	1608	cfeb1e670dac64b057eec3d0dee1fff018e64e081b5b67dc54f715a672fe229d.exe
Token: SeIncBasePriorityPrivilege	1608	cfeb1e670dac64b057eec3d0dee1fff018e64e081b5b67dc54f715a672fe229d.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1608	cfeb1e670dac64b057eec3d0dee1fff018e64e081b5b67dc54f715a672fe229d.exe

C:\Users\Admin\AppData\Local\Temp\cfeb1e670dac64b057eec3d0dee1fff018e64e081b5b67dc54f715a672fe229d.exe
"C:\Users\Admin\AppData\Local\Temp\cfeb1e670dac64b057eec3d0dee1fff018e64e081b5b67dc54f715a672fe229d.exe"
1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Drops file in System32 directory
- Drops file in Windows directory
- Modifies registry class
- NTFS ADS
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1608

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1608-54-0x0000000075A91000-0x0000000075A93000-memory.dmp

Filesize
8KB

Download
memory/1608-55-0x0000000000B70000-0x0000000000C04000-memory.dmp

Filesize
592KB

Download
memory/1608-60-0x0000000000400000-0x0000000000542000-memory.dmp

Filesize
1.3MB

Download
memory/1608-61-0x0000000000550000-0x0000000000692000-memory.dmp

Filesize
1.3MB

Download
memory/1608-62-0x0000000000B71000-0x0000000000BDE000-memory.dmp

Filesize
436KB

Download
memory/1608-63-0x0000000000400000-0x0000000000542000-memory.dmp

Filesize
1.3MB

Download
memory/1608-65-0x0000000000400000-0x0000000000542000-memory.dmp

Filesize
1.3MB

Download
memory/1608-66-0x0000000000401000-0x000000000040A000-memory.dmp

Filesize
36KB

Download
memory/1608-64-0x0000000000400000-0x0000000000542000-memory.dmp

Filesize
1.3MB

Download
memory/1608-69-0x0000000000400000-0x0000000000542000-memory.dmp

Filesize
1.3MB

Download

Analysis

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