8a571eacabb176621ed91318ea554edda8e405cd8f2ce1833d43850f032e627a

Analysis

max time kernel
151s
max time network
122s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
19/09/2022, 16:41

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

8a571eacabb176621ed91318ea554edda8e405cd8f2ce1833d43850f032e627a.exe
Size

123KB
MD5

1b15ba50025490779f2eacdef86c42e3
SHA1

29cb3899bc2d6bd8ecce5c7a4e9d20c2ce87ee75
SHA256

8a571eacabb176621ed91318ea554edda8e405cd8f2ce1833d43850f032e627a
SHA512

c415cc3f28b1e81f761ece4013f10dee430f894c2079dc2aa3649d82c6662844feef6de0c05610695525fd512c5a3c205c17758655219f1687cdd8454b94d36f
SSDEEP

1536:gR0vxn3Pc0LCH9MtbvabUDzJYWu3BzTjTTTTTTTTAX6ySeyUbSMA:gR2xn3k0CdM1vabyzJYWqaXDSz

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
1272	WaterMark.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1268-57-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1268-58-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1268-63-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1272-79-0x0000000000400000-0x000000000042B000-memory.dmp	upx
behavioral1/memory/1272-81-0x0000000000400000-0x000000000042B000-memory.dmp	upx
behavioral1/memory/1272-184-0x0000000000400000-0x0000000000421000-memory.dmp	upx

Loads dropped DLL 2 IoCs

pid	Process
1268	8a571eacabb176621ed91318ea554edda8e405cd8f2ce1833d43850f032e627a.exe
1268	8a571eacabb176621ed91318ea554edda8e405cd8f2ce1833d43850f032e627a.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	8a571eacabb176621ed91318ea554edda8e405cd8f2ce1833d43850f032e627a.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\px731E.tmp	8a571eacabb176621ed91318ea554edda8e405cd8f2ce1833d43850f032e627a.exe
File opened for modification	C:\Program Files (x86)\Microsoft\WaterMark.exe	8a571eacabb176621ed91318ea554edda8e405cd8f2ce1833d43850f032e627a.exe
File opened for modification	C:\Program Files (x86)\Microsoft\WaterMark.exe	svchost.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

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
1272	WaterMark.exe
1272	WaterMark.exe
1272	WaterMark.exe
1272	WaterMark.exe
1272	WaterMark.exe
1272	WaterMark.exe
1272	WaterMark.exe
1272	WaterMark.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe
892	svchost.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1272	WaterMark.exe
Token: SeDebugPrivilege	892	svchost.exe
Token: SeDebugPrivilege	1272	WaterMark.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
1268	8a571eacabb176621ed91318ea554edda8e405cd8f2ce1833d43850f032e627a.exe
1272	WaterMark.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1268 wrote to memory of 1272	1268	8a571eacabb176621ed91318ea554edda8e405cd8f2ce1833d43850f032e627a.exe	26
PID 1268 wrote to memory of 1272	1268	8a571eacabb176621ed91318ea554edda8e405cd8f2ce1833d43850f032e627a.exe	26
PID 1268 wrote to memory of 1272	1268	8a571eacabb176621ed91318ea554edda8e405cd8f2ce1833d43850f032e627a.exe	26
PID 1268 wrote to memory of 1272	1268	8a571eacabb176621ed91318ea554edda8e405cd8f2ce1833d43850f032e627a.exe	26
PID 1272 wrote to memory of 780	1272	WaterMark.exe	27
PID 1272 wrote to memory of 780	1272	WaterMark.exe	27
PID 1272 wrote to memory of 780	1272	WaterMark.exe	27
PID 1272 wrote to memory of 780	1272	WaterMark.exe	27
PID 1272 wrote to memory of 780	1272	WaterMark.exe	27
PID 1272 wrote to memory of 780	1272	WaterMark.exe	27
PID 1272 wrote to memory of 780	1272	WaterMark.exe	27
PID 1272 wrote to memory of 780	1272	WaterMark.exe	27
PID 1272 wrote to memory of 780	1272	WaterMark.exe	27
PID 1272 wrote to memory of 780	1272	WaterMark.exe	27
PID 1272 wrote to memory of 892	1272	WaterMark.exe	28
PID 1272 wrote to memory of 892	1272	WaterMark.exe	28
PID 1272 wrote to memory of 892	1272	WaterMark.exe	28
PID 1272 wrote to memory of 892	1272	WaterMark.exe	28
PID 1272 wrote to memory of 892	1272	WaterMark.exe	28
PID 1272 wrote to memory of 892	1272	WaterMark.exe	28
PID 1272 wrote to memory of 892	1272	WaterMark.exe	28
PID 1272 wrote to memory of 892	1272	WaterMark.exe	28
PID 1272 wrote to memory of 892	1272	WaterMark.exe	28
PID 1272 wrote to memory of 892	1272	WaterMark.exe	28
PID 892 wrote to memory of 260	892	svchost.exe	25
PID 892 wrote to memory of 260	892	svchost.exe	25
PID 892 wrote to memory of 260	892	svchost.exe	25
PID 892 wrote to memory of 260	892	svchost.exe	25
PID 892 wrote to memory of 260	892	svchost.exe	25
PID 892 wrote to memory of 332	892	svchost.exe	24
PID 892 wrote to memory of 332	892	svchost.exe	24
PID 892 wrote to memory of 332	892	svchost.exe	24
PID 892 wrote to memory of 332	892	svchost.exe	24
PID 892 wrote to memory of 332	892	svchost.exe	24
PID 892 wrote to memory of 368	892	svchost.exe	23
PID 892 wrote to memory of 368	892	svchost.exe	23
PID 892 wrote to memory of 368	892	svchost.exe	23
PID 892 wrote to memory of 368	892	svchost.exe	23
PID 892 wrote to memory of 368	892	svchost.exe	23
PID 892 wrote to memory of 376	892	svchost.exe	22
PID 892 wrote to memory of 376	892	svchost.exe	22
PID 892 wrote to memory of 376	892	svchost.exe	22
PID 892 wrote to memory of 376	892	svchost.exe	22
PID 892 wrote to memory of 376	892	svchost.exe	22
PID 892 wrote to memory of 408	892	svchost.exe	21
PID 892 wrote to memory of 408	892	svchost.exe	21
PID 892 wrote to memory of 408	892	svchost.exe	21
PID 892 wrote to memory of 408	892	svchost.exe	21
PID 892 wrote to memory of 408	892	svchost.exe	21
PID 892 wrote to memory of 460	892	svchost.exe	2
PID 892 wrote to memory of 460	892	svchost.exe	2
PID 892 wrote to memory of 460	892	svchost.exe	2
PID 892 wrote to memory of 460	892	svchost.exe	2
PID 892 wrote to memory of 460	892	svchost.exe	2
PID 892 wrote to memory of 476	892	svchost.exe	1
PID 892 wrote to memory of 476	892	svchost.exe	1
PID 892 wrote to memory of 476	892	svchost.exe	1
PID 892 wrote to memory of 476	892	svchost.exe	1
PID 892 wrote to memory of 476	892	svchost.exe	1
PID 892 wrote to memory of 484	892	svchost.exe	20
PID 892 wrote to memory of 484	892	svchost.exe	20
PID 892 wrote to memory of 484	892	svchost.exe	20
PID 892 wrote to memory of 484	892	svchost.exe	20
PID 892 wrote to memory of 484	892	svchost.exe	20

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 LocalServiceNetworkRestricted
  2⤵
  PID:740
- C:\Windows\system32\sppsvc.exe
  C:\Windows\system32\sppsvc.exe
  2⤵
  PID:1980
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
  2⤵
  PID:1972
- C:\Windows\system32\taskhost.exe
  "taskhost.exe"
  2⤵
  PID:1104
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork
  2⤵
  PID:1068
- C:\Windows\System32\spoolsv.exe
  C:\Windows\System32\spoolsv.exe
  2⤵
  PID:288
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k NetworkService
  2⤵
  PID:292
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k netsvcs
  2⤵
  PID:864
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalService
  2⤵
  PID:832
- C:\Windows\System32\svchost.exe
  C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted
  2⤵
  PID:792
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k RPCSS
  2⤵
  PID:656
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k DcomLaunch
  2⤵
  PID:576

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1188
- C:\Users\Admin\AppData\Local\Temp\8a571eacabb176621ed91318ea554edda8e405cd8f2ce1833d43850f032e627a.exe
  "C:\Users\Admin\AppData\Local\Temp\8a571eacabb176621ed91318ea554edda8e405cd8f2ce1833d43850f032e627a.exe"
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of UnmapMainImage
  - Suspicious use of WriteProcessMemory
  PID:1268
- - 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:1272
  - - 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:780
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\system32\svchost.exe
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:892

C:\Windows\system32\Dwm.exe
"C:\Windows\system32\Dwm.exe"
1⤵
PID:1164

C:\Windows\system32\lsm.exe
C:\Windows\system32\lsm.exe
1⤵
PID:484

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:408

C:\Windows\system32\wininit.exe
wininit.exe
1⤵
PID:376

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:368

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

Loading Replay Monitor...

Downloads

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

Filesize
123KB

MD5
1b15ba50025490779f2eacdef86c42e3

SHA1
29cb3899bc2d6bd8ecce5c7a4e9d20c2ce87ee75

SHA256
8a571eacabb176621ed91318ea554edda8e405cd8f2ce1833d43850f032e627a

SHA512
c415cc3f28b1e81f761ece4013f10dee430f894c2079dc2aa3649d82c6662844feef6de0c05610695525fd512c5a3c205c17758655219f1687cdd8454b94d36f

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

Filesize
123KB

MD5
1b15ba50025490779f2eacdef86c42e3

SHA1
29cb3899bc2d6bd8ecce5c7a4e9d20c2ce87ee75

SHA256
8a571eacabb176621ed91318ea554edda8e405cd8f2ce1833d43850f032e627a

SHA512
c415cc3f28b1e81f761ece4013f10dee430f894c2079dc2aa3649d82c6662844feef6de0c05610695525fd512c5a3c205c17758655219f1687cdd8454b94d36f

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

Filesize
123KB

MD5
1b15ba50025490779f2eacdef86c42e3

SHA1
29cb3899bc2d6bd8ecce5c7a4e9d20c2ce87ee75

SHA256
8a571eacabb176621ed91318ea554edda8e405cd8f2ce1833d43850f032e627a

SHA512
c415cc3f28b1e81f761ece4013f10dee430f894c2079dc2aa3649d82c6662844feef6de0c05610695525fd512c5a3c205c17758655219f1687cdd8454b94d36f

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

Filesize
123KB

MD5
1b15ba50025490779f2eacdef86c42e3

SHA1
29cb3899bc2d6bd8ecce5c7a4e9d20c2ce87ee75

SHA256
8a571eacabb176621ed91318ea554edda8e405cd8f2ce1833d43850f032e627a

SHA512
c415cc3f28b1e81f761ece4013f10dee430f894c2079dc2aa3649d82c6662844feef6de0c05610695525fd512c5a3c205c17758655219f1687cdd8454b94d36f

Download Submit
memory/780-80-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/780-185-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/780-71-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/780-75-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/892-86-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/892-83-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/1268-57-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1268-54-0x0000000074F41000-0x0000000074F43000-memory.dmp

Filesize
8KB

Download
memory/1268-58-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1268-63-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1272-79-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1272-81-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1272-184-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download