c074735fe484ca2fc71ffe8366721ecddbabd6a7ebe34e9661bb276b4ca6ea8c

Analysis

max time kernel
151s
max time network
125s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
03/10/2022, 00:43

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General

Target

c074735fe484ca2fc71ffe8366721ecddbabd6a7ebe34e9661bb276b4ca6ea8c.exe
Size

172KB
MD5

6f9be4381a2d4557ea3e4474d4da7930
SHA1

42714b573351bdb274936c11af5d37e9ae0f6140
SHA256

c074735fe484ca2fc71ffe8366721ecddbabd6a7ebe34e9661bb276b4ca6ea8c
SHA512

6a2582f4c2bd8d841feb9e6f658c50be76c1ed41466b17da4044784e5201ea83ea4a8a421d3b18e2e7b3bc8c7746d25e09c9d08fa516688d3921ecd3873f4ebf
SSDEEP

768:i06R0UKzOgnKqGR7//GPc0LOBhvBrHks3IiyhDYQbGmxlNaM+WGa1wuxnzgOYw98:oR0vxn3Pc0LCH9MtbvabUDzJYWu3B

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 1 IoCs

pid	Process
1212	WaterMark.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1464-58-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1464-57-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1464-63-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1212-79-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/1212-187-0x0000000000400000-0x0000000000421000-memory.dmp	upx

Loads dropped DLL 2 IoCs

pid	Process
1464	c074735fe484ca2fc71ffe8366721ecddbabd6a7ebe34e9661bb276b4ca6ea8c.exe
1464	c074735fe484ca2fc71ffe8366721ecddbabd6a7ebe34e9661bb276b4ca6ea8c.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
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 created	C:\Program Files (x86)\Microsoft\WaterMark.exe	c074735fe484ca2fc71ffe8366721ecddbabd6a7ebe34e9661bb276b4ca6ea8c.exe
File opened for modification	C:\Program Files (x86)\Microsoft\WaterMark.exe	c074735fe484ca2fc71ffe8366721ecddbabd6a7ebe34e9661bb276b4ca6ea8c.exe
File opened for modification	C:\Program Files\7-Zip\7-zip.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\px26E3.tmp	c074735fe484ca2fc71ffe8366721ecddbabd6a7ebe34e9661bb276b4ca6ea8c.exe
File opened for modification	C:\Program Files\7-Zip\7-zip32.dll	svchost.exe
File opened for modification	C:\Program Files\7-Zip\7z.dll	svchost.exe
File opened for modification	C:\Program Files (x86)\Microsoft\WaterMark.exe	svchost.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
1212	WaterMark.exe
1212	WaterMark.exe
1212	WaterMark.exe
1212	WaterMark.exe
1212	WaterMark.exe
1212	WaterMark.exe
1212	WaterMark.exe
1212	WaterMark.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1212	WaterMark.exe
Token: SeDebugPrivilege	2044	svchost.exe
Token: SeDebugPrivilege	1212	WaterMark.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
1464	c074735fe484ca2fc71ffe8366721ecddbabd6a7ebe34e9661bb276b4ca6ea8c.exe
1212	WaterMark.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1464 wrote to memory of 1212	1464	c074735fe484ca2fc71ffe8366721ecddbabd6a7ebe34e9661bb276b4ca6ea8c.exe	27
PID 1464 wrote to memory of 1212	1464	c074735fe484ca2fc71ffe8366721ecddbabd6a7ebe34e9661bb276b4ca6ea8c.exe	27
PID 1464 wrote to memory of 1212	1464	c074735fe484ca2fc71ffe8366721ecddbabd6a7ebe34e9661bb276b4ca6ea8c.exe	27
PID 1464 wrote to memory of 1212	1464	c074735fe484ca2fc71ffe8366721ecddbabd6a7ebe34e9661bb276b4ca6ea8c.exe	27
PID 1212 wrote to memory of 1180	1212	WaterMark.exe	28
PID 1212 wrote to memory of 1180	1212	WaterMark.exe	28
PID 1212 wrote to memory of 1180	1212	WaterMark.exe	28
PID 1212 wrote to memory of 1180	1212	WaterMark.exe	28
PID 1212 wrote to memory of 1180	1212	WaterMark.exe	28
PID 1212 wrote to memory of 1180	1212	WaterMark.exe	28
PID 1212 wrote to memory of 1180	1212	WaterMark.exe	28
PID 1212 wrote to memory of 1180	1212	WaterMark.exe	28
PID 1212 wrote to memory of 1180	1212	WaterMark.exe	28
PID 1212 wrote to memory of 1180	1212	WaterMark.exe	28
PID 1212 wrote to memory of 2044	1212	WaterMark.exe	29
PID 1212 wrote to memory of 2044	1212	WaterMark.exe	29
PID 1212 wrote to memory of 2044	1212	WaterMark.exe	29
PID 1212 wrote to memory of 2044	1212	WaterMark.exe	29
PID 1212 wrote to memory of 2044	1212	WaterMark.exe	29
PID 1212 wrote to memory of 2044	1212	WaterMark.exe	29
PID 1212 wrote to memory of 2044	1212	WaterMark.exe	29
PID 1212 wrote to memory of 2044	1212	WaterMark.exe	29
PID 1212 wrote to memory of 2044	1212	WaterMark.exe	29
PID 1212 wrote to memory of 2044	1212	WaterMark.exe	29
PID 2044 wrote to memory of 260	2044	svchost.exe	25
PID 2044 wrote to memory of 260	2044	svchost.exe	25
PID 2044 wrote to memory of 260	2044	svchost.exe	25
PID 2044 wrote to memory of 260	2044	svchost.exe	25
PID 2044 wrote to memory of 260	2044	svchost.exe	25
PID 2044 wrote to memory of 332	2044	svchost.exe	24
PID 2044 wrote to memory of 332	2044	svchost.exe	24
PID 2044 wrote to memory of 332	2044	svchost.exe	24
PID 2044 wrote to memory of 332	2044	svchost.exe	24
PID 2044 wrote to memory of 332	2044	svchost.exe	24
PID 2044 wrote to memory of 372	2044	svchost.exe	5
PID 2044 wrote to memory of 372	2044	svchost.exe	5
PID 2044 wrote to memory of 372	2044	svchost.exe	5
PID 2044 wrote to memory of 372	2044	svchost.exe	5
PID 2044 wrote to memory of 372	2044	svchost.exe	5
PID 2044 wrote to memory of 380	2044	svchost.exe	4
PID 2044 wrote to memory of 380	2044	svchost.exe	4
PID 2044 wrote to memory of 380	2044	svchost.exe	4
PID 2044 wrote to memory of 380	2044	svchost.exe	4
PID 2044 wrote to memory of 380	2044	svchost.exe	4
PID 2044 wrote to memory of 420	2044	svchost.exe	3
PID 2044 wrote to memory of 420	2044	svchost.exe	3
PID 2044 wrote to memory of 420	2044	svchost.exe	3
PID 2044 wrote to memory of 420	2044	svchost.exe	3
PID 2044 wrote to memory of 420	2044	svchost.exe	3
PID 2044 wrote to memory of 464	2044	svchost.exe	2
PID 2044 wrote to memory of 464	2044	svchost.exe	2
PID 2044 wrote to memory of 464	2044	svchost.exe	2
PID 2044 wrote to memory of 464	2044	svchost.exe	2
PID 2044 wrote to memory of 464	2044	svchost.exe	2
PID 2044 wrote to memory of 480	2044	svchost.exe	1
PID 2044 wrote to memory of 480	2044	svchost.exe	1
PID 2044 wrote to memory of 480	2044	svchost.exe	1
PID 2044 wrote to memory of 480	2044	svchost.exe	1
PID 2044 wrote to memory of 480	2044	svchost.exe	1
PID 2044 wrote to memory of 488	2044	svchost.exe	23
PID 2044 wrote to memory of 488	2044	svchost.exe	23
PID 2044 wrote to memory of 488	2044	svchost.exe	23
PID 2044 wrote to memory of 488	2044	svchost.exe	23
PID 2044 wrote to memory of 488	2044	svchost.exe	23

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:464
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalService
  2⤵
  PID:848
- C:\Windows\system32\sppsvc.exe
  C:\Windows\system32\sppsvc.exe
  2⤵
  PID:1200
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
  2⤵
  PID:744
- C:\Windows\system32\taskhost.exe
  "taskhost.exe"
  2⤵
  PID:1248
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork
  2⤵
  PID:1028
- C:\Windows\System32\spoolsv.exe
  C:\Windows\System32\spoolsv.exe
  2⤵
  PID:284
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k NetworkService
  2⤵
  PID:300
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k netsvcs
  2⤵
  PID:872
- C:\Windows\System32\svchost.exe
  C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted
  2⤵
  PID:804
- C:\Windows\System32\svchost.exe
  C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted
  2⤵
  PID:760
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k RPCSS
  2⤵
  PID:672
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k DcomLaunch
  2⤵
  PID:592

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:420

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:380

C:\Windows\system32\wininit.exe
wininit.exe
1⤵
PID:372
- C:\Windows\system32\lsm.exe
  C:\Windows\system32\lsm.exe
  2⤵
  PID:488

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1392
- C:\Users\Admin\AppData\Local\Temp\c074735fe484ca2fc71ffe8366721ecddbabd6a7ebe34e9661bb276b4ca6ea8c.exe
  "C:\Users\Admin\AppData\Local\Temp\c074735fe484ca2fc71ffe8366721ecddbabd6a7ebe34e9661bb276b4ca6ea8c.exe"
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of UnmapMainImage
  - Suspicious use of WriteProcessMemory
  PID:1464
- - C:\Program Files (x86)\Microsoft\WaterMark.exe
    "C:\Program Files (x86)\Microsoft\WaterMark.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of UnmapMainImage
    - Suspicious use of WriteProcessMemory
    PID:1212
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\system32\svchost.exe
      4⤵
      Modifies WinLogon for persistence
      Drops file in System32 directory
      Drops file in Program Files directory
      PID:1180
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\system32\svchost.exe
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2044

\\?\C:\Windows\system32\wbem\WMIADAP.EXE
wmiadap.exe /F /T /R
1⤵
PID:2000

C:\Windows\system32\Dwm.exe
"C:\Windows\system32\Dwm.exe"
1⤵
PID:1360

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

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
172KB

MD5
6f9be4381a2d4557ea3e4474d4da7930

SHA1
42714b573351bdb274936c11af5d37e9ae0f6140

SHA256
c074735fe484ca2fc71ffe8366721ecddbabd6a7ebe34e9661bb276b4ca6ea8c

SHA512
6a2582f4c2bd8d841feb9e6f658c50be76c1ed41466b17da4044784e5201ea83ea4a8a421d3b18e2e7b3bc8c7746d25e09c9d08fa516688d3921ecd3873f4ebf

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

Filesize
172KB

MD5
6f9be4381a2d4557ea3e4474d4da7930

SHA1
42714b573351bdb274936c11af5d37e9ae0f6140

SHA256
c074735fe484ca2fc71ffe8366721ecddbabd6a7ebe34e9661bb276b4ca6ea8c

SHA512
6a2582f4c2bd8d841feb9e6f658c50be76c1ed41466b17da4044784e5201ea83ea4a8a421d3b18e2e7b3bc8c7746d25e09c9d08fa516688d3921ecd3873f4ebf

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

Filesize
172KB

MD5
6f9be4381a2d4557ea3e4474d4da7930

SHA1
42714b573351bdb274936c11af5d37e9ae0f6140

SHA256
c074735fe484ca2fc71ffe8366721ecddbabd6a7ebe34e9661bb276b4ca6ea8c

SHA512
6a2582f4c2bd8d841feb9e6f658c50be76c1ed41466b17da4044784e5201ea83ea4a8a421d3b18e2e7b3bc8c7746d25e09c9d08fa516688d3921ecd3873f4ebf

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

Filesize
172KB

MD5
6f9be4381a2d4557ea3e4474d4da7930

SHA1
42714b573351bdb274936c11af5d37e9ae0f6140

SHA256
c074735fe484ca2fc71ffe8366721ecddbabd6a7ebe34e9661bb276b4ca6ea8c

SHA512
6a2582f4c2bd8d841feb9e6f658c50be76c1ed41466b17da4044784e5201ea83ea4a8a421d3b18e2e7b3bc8c7746d25e09c9d08fa516688d3921ecd3873f4ebf

Download Submit
memory/1180-71-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1180-188-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1180-80-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1180-75-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1212-79-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1212-187-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1464-58-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1464-57-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1464-63-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1464-54-0x00000000758B1000-0x00000000758B3000-memory.dmp

Filesize
8KB

Download
memory/2044-82-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/2044-85-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download