7f211f8b4a085511e585652eb54771b81382316da9bb7e111781e174dfd4928d

Analysis

max time kernel
151s
max time network
136s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
11/10/2022, 22:41

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General

Target

7f211f8b4a085511e585652eb54771b81382316da9bb7e111781e174dfd4928d.dll
Size

460KB
MD5

68a1ef9c40147a51507a1114a9006c89
SHA1

6e5d7210b4547c66bf0d105f301ca46f34f3009f
SHA256

7f211f8b4a085511e585652eb54771b81382316da9bb7e111781e174dfd4928d
SHA512

f0025b92cd61d8f8703503058d59ae5a6157a89565e710b02f5291efd2788f2fdc10aa43bd32ce6c2124dae7ba46532a34e442d733121de9938ba59146ef79c7
SSDEEP

6144://gxI5p8RC6JL0OFLm1I7AV4COHEQeewQeelQeesQeeudQeefQeeZKwQBIoqhvJ8:AxI5QLM1aw4CIoqhKW6RIDUWKg/M

Score

10^/10

persistence 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\Userinit = "userinit.exe,c:\\program files (x86)\\microsoft\\watermark.exe"	svchost.exe

Executes dropped EXE 2 IoCs

pid	Process
1020	regsvr32mgr.exe
2044	WaterMark.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1020-63-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1020-64-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1020-67-0x0000000000400000-0x0000000000429000-memory.dmp	upx
behavioral1/memory/1020-69-0x0000000000400000-0x0000000000429000-memory.dmp	upx
behavioral1/memory/1020-73-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/2044-90-0x0000000000400000-0x0000000000429000-memory.dmp	upx
behavioral1/memory/2044-88-0x0000000000400000-0x0000000000429000-memory.dmp	upx
behavioral1/memory/2044-197-0x0000000000400000-0x0000000000421000-memory.dmp	upx

Loads dropped DLL 4 IoCs

pid	Process
1948	regsvr32.exe
1948	regsvr32.exe
1020	regsvr32mgr.exe
1020	regsvr32mgr.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\regsvr32mgr.exe	regsvr32.exe
File created	C:\Windows\SysWOW64\dmlconf.dat	svchost.exe
File opened for modification	C:\Windows\SysWOW64\dmlconf.dat	svchost.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\WaterMark.exe	svchost.exe
File opened for modification	C:\Program Files (x86)\Microsoft\px317D.tmp	regsvr32mgr.exe
File created	C:\Program Files (x86)\Microsoft\WaterMark.exe	regsvr32mgr.exe
File opened for modification	C:\Program Files (x86)\Microsoft\WaterMark.exe	regsvr32mgr.exe

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C58F1580-0DF3-401C-93B1-2D9DDA61CF04}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C58F1580-0DF3-401C-93B1-2D9DDA61CF04}\1.0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C58F1580-0DF3-401C-93B1-2D9DDA61CF04}\1.0\HELPDIR	regsvr32.exe

Suspicious behavior: EnumeratesProcesses 24 IoCs

pid	Process
2044	WaterMark.exe
2044	WaterMark.exe
2044	WaterMark.exe
2044	WaterMark.exe
2044	WaterMark.exe
2044	WaterMark.exe
2044	WaterMark.exe
2044	WaterMark.exe
896	svchost.exe
896	svchost.exe
896	svchost.exe
896	svchost.exe
896	svchost.exe
896	svchost.exe
896	svchost.exe
896	svchost.exe
896	svchost.exe
896	svchost.exe
896	svchost.exe
896	svchost.exe
896	svchost.exe
896	svchost.exe
896	svchost.exe
896	svchost.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2044	WaterMark.exe
Token: SeDebugPrivilege	896	svchost.exe
Token: SeDebugPrivilege	2044	WaterMark.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
1020	regsvr32mgr.exe
2044	WaterMark.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1612 wrote to memory of 1948	1612	regsvr32.exe	27
PID 1612 wrote to memory of 1948	1612	regsvr32.exe	27
PID 1612 wrote to memory of 1948	1612	regsvr32.exe	27
PID 1612 wrote to memory of 1948	1612	regsvr32.exe	27
PID 1612 wrote to memory of 1948	1612	regsvr32.exe	27
PID 1612 wrote to memory of 1948	1612	regsvr32.exe	27
PID 1612 wrote to memory of 1948	1612	regsvr32.exe	27
PID 1948 wrote to memory of 1020	1948	regsvr32.exe	28
PID 1948 wrote to memory of 1020	1948	regsvr32.exe	28
PID 1948 wrote to memory of 1020	1948	regsvr32.exe	28
PID 1948 wrote to memory of 1020	1948	regsvr32.exe	28
PID 1020 wrote to memory of 2044	1020	regsvr32mgr.exe	29
PID 1020 wrote to memory of 2044	1020	regsvr32mgr.exe	29
PID 1020 wrote to memory of 2044	1020	regsvr32mgr.exe	29
PID 1020 wrote to memory of 2044	1020	regsvr32mgr.exe	29
PID 2044 wrote to memory of 1976	2044	WaterMark.exe	30
PID 2044 wrote to memory of 1976	2044	WaterMark.exe	30
PID 2044 wrote to memory of 1976	2044	WaterMark.exe	30
PID 2044 wrote to memory of 1976	2044	WaterMark.exe	30
PID 2044 wrote to memory of 1976	2044	WaterMark.exe	30
PID 2044 wrote to memory of 1976	2044	WaterMark.exe	30
PID 2044 wrote to memory of 1976	2044	WaterMark.exe	30
PID 2044 wrote to memory of 1976	2044	WaterMark.exe	30
PID 2044 wrote to memory of 1976	2044	WaterMark.exe	30
PID 2044 wrote to memory of 1976	2044	WaterMark.exe	30
PID 2044 wrote to memory of 896	2044	WaterMark.exe	31
PID 2044 wrote to memory of 896	2044	WaterMark.exe	31
PID 2044 wrote to memory of 896	2044	WaterMark.exe	31
PID 2044 wrote to memory of 896	2044	WaterMark.exe	31
PID 2044 wrote to memory of 896	2044	WaterMark.exe	31
PID 2044 wrote to memory of 896	2044	WaterMark.exe	31
PID 2044 wrote to memory of 896	2044	WaterMark.exe	31
PID 2044 wrote to memory of 896	2044	WaterMark.exe	31
PID 2044 wrote to memory of 896	2044	WaterMark.exe	31
PID 2044 wrote to memory of 896	2044	WaterMark.exe	31
PID 896 wrote to memory of 260	896	svchost.exe	7
PID 896 wrote to memory of 260	896	svchost.exe	7
PID 896 wrote to memory of 260	896	svchost.exe	7
PID 896 wrote to memory of 260	896	svchost.exe	7
PID 896 wrote to memory of 260	896	svchost.exe	7
PID 896 wrote to memory of 332	896	svchost.exe	6
PID 896 wrote to memory of 332	896	svchost.exe	6
PID 896 wrote to memory of 332	896	svchost.exe	6
PID 896 wrote to memory of 332	896	svchost.exe	6
PID 896 wrote to memory of 332	896	svchost.exe	6
PID 896 wrote to memory of 368	896	svchost.exe	5
PID 896 wrote to memory of 368	896	svchost.exe	5
PID 896 wrote to memory of 368	896	svchost.exe	5
PID 896 wrote to memory of 368	896	svchost.exe	5
PID 896 wrote to memory of 368	896	svchost.exe	5
PID 896 wrote to memory of 376	896	svchost.exe	4
PID 896 wrote to memory of 376	896	svchost.exe	4
PID 896 wrote to memory of 376	896	svchost.exe	4
PID 896 wrote to memory of 376	896	svchost.exe	4
PID 896 wrote to memory of 376	896	svchost.exe	4
PID 896 wrote to memory of 416	896	svchost.exe	3
PID 896 wrote to memory of 416	896	svchost.exe	3
PID 896 wrote to memory of 416	896	svchost.exe	3
PID 896 wrote to memory of 416	896	svchost.exe	3
PID 896 wrote to memory of 416	896	svchost.exe	3
PID 896 wrote to memory of 460	896	svchost.exe	2
PID 896 wrote to memory of 460	896	svchost.exe	2
PID 896 wrote to memory of 460	896	svchost.exe	2
PID 896 wrote to memory of 460	896	svchost.exe	2

C:\Windows\system32\lsass.exe
C:\Windows\system32\lsass.exe
1⤵
PID:476

C:\Windows\system32\services.exe
C:\Windows\system32\services.exe
1⤵
PID:460
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork
  2⤵
  PID:592
- C:\Windows\system32\sppsvc.exe
  C:\Windows\system32\sppsvc.exe
  2⤵
  PID:1584
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
  2⤵
  PID:1544
- C:\Windows\system32\taskhost.exe
  "taskhost.exe"
  2⤵
  PID:1244
- C:\Windows\System32\spoolsv.exe
  C:\Windows\System32\spoolsv.exe
  2⤵
  PID:1008
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k NetworkService
  2⤵
  PID:296
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k netsvcs
  2⤵
  PID:868
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalService
  2⤵
  PID:824
- C:\Windows\System32\svchost.exe
  C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted
  2⤵
  PID:796
- C:\Windows\System32\svchost.exe
  C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted
  2⤵
  PID:740
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k RPCSS
  2⤵
  PID:652
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k DcomLaunch
  2⤵
  PID:576

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:416

C:\Windows\system32\csrss.exe
%SystemRoot%\system32\csrss.exe ObjectDirectory=\Windows SharedSection=1024,20480,768 Windows=On SubSystemType=Windows ServerDll=basesrv,1 ServerDll=winsrv:UserServerDllInitialization,3 ServerDll=winsrv:ConServerDllInitialization,2 ServerDll=sxssrv,4 ProfileControl=Off MaxRequestThreads=16
1⤵
PID:376

C:\Windows\system32\wininit.exe
wininit.exe
1⤵
PID:368
- C:\Windows\system32\lsm.exe
  C:\Windows\system32\lsm.exe
  2⤵
  PID:484

C:\Windows\system32\csrss.exe
%SystemRoot%\system32\csrss.exe ObjectDirectory=\Windows SharedSection=1024,20480,768 Windows=On SubSystemType=Windows ServerDll=basesrv,1 ServerDll=winsrv:UserServerDllInitialization,3 ServerDll=winsrv:ConServerDllInitialization,2 ServerDll=sxssrv,4 ProfileControl=Off MaxRequestThreads=16
1⤵
PID:332

C:\Windows\System32\smss.exe
\SystemRoot\System32\smss.exe
1⤵
PID:260

\\?\C:\Windows\system32\wbem\WMIADAP.EXE
wmiadap.exe /F /T /R
1⤵
PID:1660

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1412
- C:\Windows\system32\regsvr32.exe
  regsvr32 /s C:\Users\Admin\AppData\Local\Temp\7f211f8b4a085511e585652eb54771b81382316da9bb7e111781e174dfd4928d.dll
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1612
- - C:\Windows\SysWOW64\regsvr32.exe
    /s C:\Users\Admin\AppData\Local\Temp\7f211f8b4a085511e585652eb54771b81382316da9bb7e111781e174dfd4928d.dll
    3⤵
    - Loads dropped DLL
    - Drops file in System32 directory
    - Modifies registry class
    - Suspicious use of WriteProcessMemory
    PID:1948
  - - C:\Windows\SysWOW64\regsvr32mgr.exe
      C:\Windows\SysWOW64\regsvr32mgr.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Drops file in Program Files directory
      Suspicious use of UnmapMainImage
      Suspicious use of WriteProcessMemory
      PID:1020
    - - C:\Program Files (x86)\Microsoft\WaterMark.exe
        
        "C:\Program Files (x86)\Microsoft\WaterMark.exe"
        5⤵
        Executes dropped EXE
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of UnmapMainImage
        Suspicious use of WriteProcessMemory
        
        PID:2044
      - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\system32\svchost.exe
        6⤵
        Modifies WinLogon for persistence
        Drops file in System32 directory
        Drops file in Program Files directory
        
        PID:1976
      - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\system32\svchost.exe
        6⤵
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:896

C:\Windows\system32\Dwm.exe
"C:\Windows\system32\Dwm.exe"
1⤵
PID:1348

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Microsoft\WaterMark.exe

Filesize
119KB

MD5
9d5d609dc8e2554054733d19eed45c5c

SHA1
ce72453fca9f477940a9def32bd8463549c6e1e4

SHA256
7a85b3db04beb0c4b6a8929fdf79726bcf1084efab0a9f04a8ebaa0a2bc9e0b1

SHA512
012cabde17ed1c1d1a48b5bc136591ff9c8e261e5da8bc7f67d0bd235a32150f63274362cdeef2376d2d5a38dfb0c9acc7cd3aa5244c1858b88b183f8cbe550b

Download Submit
C:\Program Files (x86)\Microsoft\WaterMark.exe

Filesize
119KB

MD5
9d5d609dc8e2554054733d19eed45c5c

SHA1
ce72453fca9f477940a9def32bd8463549c6e1e4

SHA256
7a85b3db04beb0c4b6a8929fdf79726bcf1084efab0a9f04a8ebaa0a2bc9e0b1

SHA512
012cabde17ed1c1d1a48b5bc136591ff9c8e261e5da8bc7f67d0bd235a32150f63274362cdeef2376d2d5a38dfb0c9acc7cd3aa5244c1858b88b183f8cbe550b

Download Submit
C:\Windows\SysWOW64\regsvr32mgr.exe

Filesize
119KB

MD5
9d5d609dc8e2554054733d19eed45c5c

SHA1
ce72453fca9f477940a9def32bd8463549c6e1e4

SHA256
7a85b3db04beb0c4b6a8929fdf79726bcf1084efab0a9f04a8ebaa0a2bc9e0b1

SHA512
012cabde17ed1c1d1a48b5bc136591ff9c8e261e5da8bc7f67d0bd235a32150f63274362cdeef2376d2d5a38dfb0c9acc7cd3aa5244c1858b88b183f8cbe550b

Download Submit
C:\Windows\SysWOW64\regsvr32mgr.exe

Filesize
119KB

MD5
9d5d609dc8e2554054733d19eed45c5c

SHA1
ce72453fca9f477940a9def32bd8463549c6e1e4

SHA256
7a85b3db04beb0c4b6a8929fdf79726bcf1084efab0a9f04a8ebaa0a2bc9e0b1

SHA512
012cabde17ed1c1d1a48b5bc136591ff9c8e261e5da8bc7f67d0bd235a32150f63274362cdeef2376d2d5a38dfb0c9acc7cd3aa5244c1858b88b183f8cbe550b

Download Submit
\Program Files (x86)\Microsoft\WaterMark.exe

Filesize
119KB

MD5
9d5d609dc8e2554054733d19eed45c5c

SHA1
ce72453fca9f477940a9def32bd8463549c6e1e4

SHA256
7a85b3db04beb0c4b6a8929fdf79726bcf1084efab0a9f04a8ebaa0a2bc9e0b1

SHA512
012cabde17ed1c1d1a48b5bc136591ff9c8e261e5da8bc7f67d0bd235a32150f63274362cdeef2376d2d5a38dfb0c9acc7cd3aa5244c1858b88b183f8cbe550b

Download Submit
\Program Files (x86)\Microsoft\WaterMark.exe

Filesize
119KB

MD5
9d5d609dc8e2554054733d19eed45c5c

SHA1
ce72453fca9f477940a9def32bd8463549c6e1e4

SHA256
7a85b3db04beb0c4b6a8929fdf79726bcf1084efab0a9f04a8ebaa0a2bc9e0b1

SHA512
012cabde17ed1c1d1a48b5bc136591ff9c8e261e5da8bc7f67d0bd235a32150f63274362cdeef2376d2d5a38dfb0c9acc7cd3aa5244c1858b88b183f8cbe550b

Download Submit
\Windows\SysWOW64\regsvr32mgr.exe

Filesize
119KB

MD5
9d5d609dc8e2554054733d19eed45c5c

SHA1
ce72453fca9f477940a9def32bd8463549c6e1e4

SHA256
7a85b3db04beb0c4b6a8929fdf79726bcf1084efab0a9f04a8ebaa0a2bc9e0b1

SHA512
012cabde17ed1c1d1a48b5bc136591ff9c8e261e5da8bc7f67d0bd235a32150f63274362cdeef2376d2d5a38dfb0c9acc7cd3aa5244c1858b88b183f8cbe550b

Download Submit
\Windows\SysWOW64\regsvr32mgr.exe

Filesize
119KB

MD5
9d5d609dc8e2554054733d19eed45c5c

SHA1
ce72453fca9f477940a9def32bd8463549c6e1e4

SHA256
7a85b3db04beb0c4b6a8929fdf79726bcf1084efab0a9f04a8ebaa0a2bc9e0b1

SHA512
012cabde17ed1c1d1a48b5bc136591ff9c8e261e5da8bc7f67d0bd235a32150f63274362cdeef2376d2d5a38dfb0c9acc7cd3aa5244c1858b88b183f8cbe550b

Download Submit
memory/896-92-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/896-95-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/1020-68-0x0000000000220000-0x0000000000249000-memory.dmp

Filesize
164KB

Download
memory/1020-69-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1020-67-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1020-73-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1020-64-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1020-63-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1612-54-0x000007FEFB751000-0x000007FEFB753000-memory.dmp

Filesize
8KB

Download
memory/1948-56-0x0000000075091000-0x0000000075093000-memory.dmp

Filesize
8KB

Download
memory/1976-84-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1976-89-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1976-80-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1976-198-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/2044-90-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/2044-88-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/2044-197-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download