975c4ffb679d9c4c0cbd70278feeb2ac8751c47d9eea1ecc1cb3cbf0e53fd2b2

Analysis

max time kernel
151s
max time network
127s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
11/10/2022, 12:08

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General

Target

975c4ffb679d9c4c0cbd70278feeb2ac8751c47d9eea1ecc1cb3cbf0e53fd2b2.dll
Size

580KB
MD5

478a7852e7adc042bcdc773a9657653c
SHA1

3ab493a5ad63a60fe12d2a64c6bfe8779fb5ab14
SHA256

975c4ffb679d9c4c0cbd70278feeb2ac8751c47d9eea1ecc1cb3cbf0e53fd2b2
SHA512

35fec9a55ee2a2bef76f28e9989df35185780e82649490b30dea109aa99a8f4ad8bad07b39339d41dbed651abd48b884635cbbbff244db8d80e1cdd23be52784
SSDEEP

12288:ShpUrEIZJqr1AkBWwNa5R0EYl795/amaX3QXaPKUuZKn:S/jG01NHXaP6Zk

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
860	rundll32mgr.exe
1492	WaterMark.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/860-65-0x0000000000400000-0x0000000000431378-memory.dmp	upx
behavioral1/memory/1492-81-0x0000000000400000-0x0000000000431378-memory.dmp	upx
behavioral1/memory/1492-201-0x0000000000400000-0x0000000000431378-memory.dmp	upx

Loads dropped DLL 4 IoCs

pid	Process
1120	rundll32.exe
1120	rundll32.exe
860	rundll32mgr.exe
860	rundll32mgr.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rundll32mgr.exe	rundll32.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 10 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\7-Zip\7z.dll	svchost.exe
File opened for modification	C:\Program Files\7-Zip\7z.exe	svchost.exe
File opened for modification	C:\Program Files\7-Zip\7zFM.exe	svchost.exe
File opened for modification	C:\Program Files\7-Zip\7zG.exe	svchost.exe
File opened for modification	C:\Program Files (x86)\Microsoft\WaterMark.exe	rundll32mgr.exe
File created	C:\Program Files (x86)\Microsoft\WaterMark.exe	rundll32mgr.exe
File opened for modification	C:\Program Files (x86)\Microsoft\WaterMark.exe	svchost.exe
File opened for modification	C:\Program Files\7-Zip\7-zip.dll	svchost.exe
File opened for modification	C:\Program Files\7-Zip\7-zip32.dll	svchost.exe
File opened for modification	C:\Program Files (x86)\Microsoft\px6614.tmp	rundll32mgr.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
628	1120	WerFault.exe	26

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
1492	WaterMark.exe
1492	WaterMark.exe
1492	WaterMark.exe
1492	WaterMark.exe
1492	WaterMark.exe
1492	WaterMark.exe
1492	WaterMark.exe
1492	WaterMark.exe
696	svchost.exe
696	svchost.exe
696	svchost.exe
696	svchost.exe
696	svchost.exe
696	svchost.exe
696	svchost.exe
696	svchost.exe
696	svchost.exe
696	svchost.exe
696	svchost.exe
696	svchost.exe
696	svchost.exe
696	svchost.exe
696	svchost.exe
696	svchost.exe
696	svchost.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	1492	WaterMark.exe
Token: SeDebugPrivilege	696	svchost.exe
Token: SeDebugPrivilege	1120	rundll32.exe
Token: SeDebugPrivilege	628	WerFault.exe
Token: SeDebugPrivilege	1492	WaterMark.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1248 wrote to memory of 1120	1248	rundll32.exe	26
PID 1248 wrote to memory of 1120	1248	rundll32.exe	26
PID 1248 wrote to memory of 1120	1248	rundll32.exe	26
PID 1248 wrote to memory of 1120	1248	rundll32.exe	26
PID 1248 wrote to memory of 1120	1248	rundll32.exe	26
PID 1248 wrote to memory of 1120	1248	rundll32.exe	26
PID 1248 wrote to memory of 1120	1248	rundll32.exe	26
PID 1120 wrote to memory of 860	1120	rundll32.exe	27
PID 1120 wrote to memory of 860	1120	rundll32.exe	27
PID 1120 wrote to memory of 860	1120	rundll32.exe	27
PID 1120 wrote to memory of 860	1120	rundll32.exe	27
PID 860 wrote to memory of 1492	860	rundll32mgr.exe	29
PID 860 wrote to memory of 1492	860	rundll32mgr.exe	29
PID 860 wrote to memory of 1492	860	rundll32mgr.exe	29
PID 860 wrote to memory of 1492	860	rundll32mgr.exe	29
PID 1120 wrote to memory of 628	1120	rundll32.exe	28
PID 1120 wrote to memory of 628	1120	rundll32.exe	28
PID 1120 wrote to memory of 628	1120	rundll32.exe	28
PID 1120 wrote to memory of 628	1120	rundll32.exe	28
PID 1492 wrote to memory of 272	1492	WaterMark.exe	30
PID 1492 wrote to memory of 272	1492	WaterMark.exe	30
PID 1492 wrote to memory of 272	1492	WaterMark.exe	30
PID 1492 wrote to memory of 272	1492	WaterMark.exe	30
PID 1492 wrote to memory of 272	1492	WaterMark.exe	30
PID 1492 wrote to memory of 272	1492	WaterMark.exe	30
PID 1492 wrote to memory of 272	1492	WaterMark.exe	30
PID 1492 wrote to memory of 272	1492	WaterMark.exe	30
PID 1492 wrote to memory of 272	1492	WaterMark.exe	30
PID 1492 wrote to memory of 272	1492	WaterMark.exe	30
PID 1492 wrote to memory of 696	1492	WaterMark.exe	31
PID 1492 wrote to memory of 696	1492	WaterMark.exe	31
PID 1492 wrote to memory of 696	1492	WaterMark.exe	31
PID 1492 wrote to memory of 696	1492	WaterMark.exe	31
PID 1492 wrote to memory of 696	1492	WaterMark.exe	31
PID 1492 wrote to memory of 696	1492	WaterMark.exe	31
PID 1492 wrote to memory of 696	1492	WaterMark.exe	31
PID 1492 wrote to memory of 696	1492	WaterMark.exe	31
PID 1492 wrote to memory of 696	1492	WaterMark.exe	31
PID 1492 wrote to memory of 696	1492	WaterMark.exe	31
PID 696 wrote to memory of 260	696	svchost.exe	7
PID 696 wrote to memory of 260	696	svchost.exe	7
PID 696 wrote to memory of 260	696	svchost.exe	7
PID 696 wrote to memory of 260	696	svchost.exe	7
PID 696 wrote to memory of 260	696	svchost.exe	7
PID 696 wrote to memory of 332	696	svchost.exe	6
PID 696 wrote to memory of 332	696	svchost.exe	6
PID 696 wrote to memory of 332	696	svchost.exe	6
PID 696 wrote to memory of 332	696	svchost.exe	6
PID 696 wrote to memory of 332	696	svchost.exe	6
PID 696 wrote to memory of 368	696	svchost.exe	5
PID 696 wrote to memory of 368	696	svchost.exe	5
PID 696 wrote to memory of 368	696	svchost.exe	5
PID 696 wrote to memory of 368	696	svchost.exe	5
PID 696 wrote to memory of 368	696	svchost.exe	5
PID 696 wrote to memory of 376	696	svchost.exe	4
PID 696 wrote to memory of 376	696	svchost.exe	4
PID 696 wrote to memory of 376	696	svchost.exe	4
PID 696 wrote to memory of 376	696	svchost.exe	4
PID 696 wrote to memory of 376	696	svchost.exe	4
PID 696 wrote to memory of 416	696	svchost.exe	3
PID 696 wrote to memory of 416	696	svchost.exe	3
PID 696 wrote to memory of 416	696	svchost.exe	3
PID 696 wrote to memory of 416	696	svchost.exe	3
PID 696 wrote to memory of 416	696	svchost.exe	3

C:\Windows\system32\lsass.exe
C:\Windows\system32\lsass.exe
1⤵
PID:480

C:\Windows\system32\services.exe
C:\Windows\system32\services.exe
1⤵
PID:460
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k RPCSS
  2⤵
  PID:676
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalService
  2⤵
  PID:848
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k NetworkService
  2⤵
  PID:336
- C:\Windows\system32\taskhost.exe
  "taskhost.exe"
  2⤵
  PID:1300
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
  2⤵
  PID:1696
- C:\Windows\system32\sppsvc.exe
  C:\Windows\system32\sppsvc.exe
  2⤵
  PID:1800
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork
  2⤵
  PID:1036
- C:\Windows\System32\spoolsv.exe
  C:\Windows\System32\spoolsv.exe
  2⤵
  PID:328
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k netsvcs
  2⤵
  PID:884
- C:\Windows\System32\svchost.exe
  C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted
  2⤵
  PID:812
- C:\Windows\System32\svchost.exe
  C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted
  2⤵
  PID:752
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k DcomLaunch
  2⤵
  PID:596

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:488

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\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1444
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\975c4ffb679d9c4c0cbd70278feeb2ac8751c47d9eea1ecc1cb3cbf0e53fd2b2.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1248
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\975c4ffb679d9c4c0cbd70278feeb2ac8751c47d9eea1ecc1cb3cbf0e53fd2b2.dll,#1
    3⤵
    - Loads dropped DLL
    - Drops file in System32 directory
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1120
  - - C:\Windows\SysWOW64\rundll32mgr.exe
      C:\Windows\SysWOW64\rundll32mgr.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Drops file in Program Files directory
      Suspicious use of WriteProcessMemory
      PID:860
    - - 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 WriteProcessMemory
        
        PID:1492
      - 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:272
      - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\system32\svchost.exe
        6⤵
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:696
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1120 -s 236
      4⤵
      Program crash
      Suspicious use of AdjustPrivilegeToken
      PID:628

C:\Windows\system32\Dwm.exe
"C:\Windows\system32\Dwm.exe"
1⤵
PID:1404

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

Loading Replay Monitor...

Downloads

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

Filesize
120KB

MD5
132fd3d6c8b1ec1897383745f524b9de

SHA1
20d5fdaecc63300ea555e60ea2efd6921aa1fbf7

SHA256
0d07bd485789ff6d432c445290c343fc98ae86ecb8a46cf5952f796839242fdf

SHA512
d95b6796ca5f96871c4e3b265ffc89e5665b05dec1fe5299c4fe51c6e5ecc69daea0bd2159a87b6529ffec9af6562fda7c714bb02c431962ec163ce0784e75da

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

Filesize
120KB

MD5
132fd3d6c8b1ec1897383745f524b9de

SHA1
20d5fdaecc63300ea555e60ea2efd6921aa1fbf7

SHA256
0d07bd485789ff6d432c445290c343fc98ae86ecb8a46cf5952f796839242fdf

SHA512
d95b6796ca5f96871c4e3b265ffc89e5665b05dec1fe5299c4fe51c6e5ecc69daea0bd2159a87b6529ffec9af6562fda7c714bb02c431962ec163ce0784e75da

Download Submit
C:\Windows\SysWOW64\rundll32mgr.exe

Filesize
120KB

MD5
132fd3d6c8b1ec1897383745f524b9de

SHA1
20d5fdaecc63300ea555e60ea2efd6921aa1fbf7

SHA256
0d07bd485789ff6d432c445290c343fc98ae86ecb8a46cf5952f796839242fdf

SHA512
d95b6796ca5f96871c4e3b265ffc89e5665b05dec1fe5299c4fe51c6e5ecc69daea0bd2159a87b6529ffec9af6562fda7c714bb02c431962ec163ce0784e75da

Download Submit
C:\Windows\SysWOW64\rundll32mgr.exe

Filesize
120KB

MD5
132fd3d6c8b1ec1897383745f524b9de

SHA1
20d5fdaecc63300ea555e60ea2efd6921aa1fbf7

SHA256
0d07bd485789ff6d432c445290c343fc98ae86ecb8a46cf5952f796839242fdf

SHA512
d95b6796ca5f96871c4e3b265ffc89e5665b05dec1fe5299c4fe51c6e5ecc69daea0bd2159a87b6529ffec9af6562fda7c714bb02c431962ec163ce0784e75da

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

Filesize
120KB

MD5
132fd3d6c8b1ec1897383745f524b9de

SHA1
20d5fdaecc63300ea555e60ea2efd6921aa1fbf7

SHA256
0d07bd485789ff6d432c445290c343fc98ae86ecb8a46cf5952f796839242fdf

SHA512
d95b6796ca5f96871c4e3b265ffc89e5665b05dec1fe5299c4fe51c6e5ecc69daea0bd2159a87b6529ffec9af6562fda7c714bb02c431962ec163ce0784e75da

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

Filesize
120KB

MD5
132fd3d6c8b1ec1897383745f524b9de

SHA1
20d5fdaecc63300ea555e60ea2efd6921aa1fbf7

SHA256
0d07bd485789ff6d432c445290c343fc98ae86ecb8a46cf5952f796839242fdf

SHA512
d95b6796ca5f96871c4e3b265ffc89e5665b05dec1fe5299c4fe51c6e5ecc69daea0bd2159a87b6529ffec9af6562fda7c714bb02c431962ec163ce0784e75da

Download Submit
\Windows\SysWOW64\rundll32mgr.exe

Filesize
120KB

MD5
132fd3d6c8b1ec1897383745f524b9de

SHA1
20d5fdaecc63300ea555e60ea2efd6921aa1fbf7

SHA256
0d07bd485789ff6d432c445290c343fc98ae86ecb8a46cf5952f796839242fdf

SHA512
d95b6796ca5f96871c4e3b265ffc89e5665b05dec1fe5299c4fe51c6e5ecc69daea0bd2159a87b6529ffec9af6562fda7c714bb02c431962ec163ce0784e75da

Download Submit
\Windows\SysWOW64\rundll32mgr.exe

Filesize
120KB

MD5
132fd3d6c8b1ec1897383745f524b9de

SHA1
20d5fdaecc63300ea555e60ea2efd6921aa1fbf7

SHA256
0d07bd485789ff6d432c445290c343fc98ae86ecb8a46cf5952f796839242fdf

SHA512
d95b6796ca5f96871c4e3b265ffc89e5665b05dec1fe5299c4fe51c6e5ecc69daea0bd2159a87b6529ffec9af6562fda7c714bb02c431962ec163ce0784e75da

Download Submit
memory/272-202-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/272-82-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/272-74-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/272-70-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/696-84-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/696-87-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/860-65-0x0000000000400000-0x0000000000431378-memory.dmp

Filesize
196KB

Download
memory/860-67-0x0000000000220000-0x0000000000252000-memory.dmp

Filesize
200KB

Download
memory/1120-55-0x0000000075351000-0x0000000075353000-memory.dmp

Filesize
8KB

Download
memory/1120-80-0x00000000006D0000-0x0000000000702000-memory.dmp

Filesize
200KB

Download
memory/1120-79-0x00000000006D0000-0x0000000000702000-memory.dmp

Filesize
200KB

Download
memory/1120-78-0x0000000010000000-0x0000000010092000-memory.dmp

Filesize
584KB

Download
memory/1120-139-0x0000000020020000-0x000000002002B000-memory.dmp

Filesize
44KB

Download
memory/1120-847-0x00000000006D0000-0x0000000000702000-memory.dmp

Filesize
200KB

Download
memory/1120-848-0x00000000006D0000-0x0000000000702000-memory.dmp

Filesize
200KB

Download
memory/1492-81-0x0000000000400000-0x0000000000431378-memory.dmp

Filesize
196KB

Download
memory/1492-201-0x0000000000400000-0x0000000000431378-memory.dmp

Filesize
196KB

Download