88903d08f3fcb8438da72eb0a0b01deb4b0154b69e636df35f745b1aedd42fa1

Analysis

max time kernel
152s
max time network
134s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
20/10/2022, 07:19

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General

Target

88903d08f3fcb8438da72eb0a0b01deb4b0154b69e636df35f745b1aedd42fa1.exe
Size

96KB
MD5

54284d3c667dd6a26da9598714047caa
SHA1

a24f0cd36dcf926aaf34892e91bcf6789d770fc6
SHA256

88903d08f3fcb8438da72eb0a0b01deb4b0154b69e636df35f745b1aedd42fa1
SHA512

151ddd215abada6a3fe4e36f8bab5c84ec166220c979f56fbcd136c8bfec82b3c3d48f3d699eed1d3d03dbaf02fae9e5678bc39516515b87a517c176bbfd17a4
SSDEEP

768:s06R0UKzOgnKqGR7//GPc0LOBhvBrHks3IiyhDYQbGmxlNaM+WGa1wuxnzgOYw9Y:yR0vxn3Pc0LCH9MtbvabUDzJYWu3B

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
852	WaterMark.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/916-57-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/916-58-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/916-62-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/852-80-0x0000000000400000-0x0000000000436000-memory.dmp	upx
behavioral1/memory/852-79-0x0000000000400000-0x0000000000436000-memory.dmp	upx
behavioral1/memory/852-188-0x0000000000400000-0x0000000000421000-memory.dmp	upx

Loads dropped DLL 2 IoCs

pid	Process
916	88903d08f3fcb8438da72eb0a0b01deb4b0154b69e636df35f745b1aedd42fa1.exe
916	88903d08f3fcb8438da72eb0a0b01deb4b0154b69e636df35f745b1aedd42fa1.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 5 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\px25AB.tmp	88903d08f3fcb8438da72eb0a0b01deb4b0154b69e636df35f745b1aedd42fa1.exe
File created	C:\Program Files (x86)\Microsoft\WaterMark.exe	88903d08f3fcb8438da72eb0a0b01deb4b0154b69e636df35f745b1aedd42fa1.exe
File opened for modification	C:\Program Files (x86)\Microsoft\WaterMark.exe	88903d08f3fcb8438da72eb0a0b01deb4b0154b69e636df35f745b1aedd42fa1.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

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
852	WaterMark.exe
852	WaterMark.exe
852	WaterMark.exe
852	WaterMark.exe
852	WaterMark.exe
852	WaterMark.exe
852	WaterMark.exe
852	WaterMark.exe
1312	svchost.exe
1312	svchost.exe
1312	svchost.exe
1312	svchost.exe
1312	svchost.exe
1312	svchost.exe
1312	svchost.exe
1312	svchost.exe
1312	svchost.exe
1312	svchost.exe
1312	svchost.exe
1312	svchost.exe
1312	svchost.exe
1312	svchost.exe
1312	svchost.exe
1312	svchost.exe
1312	svchost.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	852	WaterMark.exe
Token: SeDebugPrivilege	1312	svchost.exe
Token: SeDebugPrivilege	852	WaterMark.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
916	88903d08f3fcb8438da72eb0a0b01deb4b0154b69e636df35f745b1aedd42fa1.exe
852	WaterMark.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 916 wrote to memory of 852	916	88903d08f3fcb8438da72eb0a0b01deb4b0154b69e636df35f745b1aedd42fa1.exe	27
PID 916 wrote to memory of 852	916	88903d08f3fcb8438da72eb0a0b01deb4b0154b69e636df35f745b1aedd42fa1.exe	27
PID 916 wrote to memory of 852	916	88903d08f3fcb8438da72eb0a0b01deb4b0154b69e636df35f745b1aedd42fa1.exe	27
PID 916 wrote to memory of 852	916	88903d08f3fcb8438da72eb0a0b01deb4b0154b69e636df35f745b1aedd42fa1.exe	27
PID 852 wrote to memory of 1724	852	WaterMark.exe	28
PID 852 wrote to memory of 1724	852	WaterMark.exe	28
PID 852 wrote to memory of 1724	852	WaterMark.exe	28
PID 852 wrote to memory of 1724	852	WaterMark.exe	28
PID 852 wrote to memory of 1724	852	WaterMark.exe	28
PID 852 wrote to memory of 1724	852	WaterMark.exe	28
PID 852 wrote to memory of 1724	852	WaterMark.exe	28
PID 852 wrote to memory of 1724	852	WaterMark.exe	28
PID 852 wrote to memory of 1724	852	WaterMark.exe	28
PID 852 wrote to memory of 1724	852	WaterMark.exe	28
PID 852 wrote to memory of 1312	852	WaterMark.exe	29
PID 852 wrote to memory of 1312	852	WaterMark.exe	29
PID 852 wrote to memory of 1312	852	WaterMark.exe	29
PID 852 wrote to memory of 1312	852	WaterMark.exe	29
PID 852 wrote to memory of 1312	852	WaterMark.exe	29
PID 852 wrote to memory of 1312	852	WaterMark.exe	29
PID 852 wrote to memory of 1312	852	WaterMark.exe	29
PID 852 wrote to memory of 1312	852	WaterMark.exe	29
PID 852 wrote to memory of 1312	852	WaterMark.exe	29
PID 852 wrote to memory of 1312	852	WaterMark.exe	29
PID 1312 wrote to memory of 260	1312	svchost.exe	26
PID 1312 wrote to memory of 260	1312	svchost.exe	26
PID 1312 wrote to memory of 260	1312	svchost.exe	26
PID 1312 wrote to memory of 260	1312	svchost.exe	26
PID 1312 wrote to memory of 260	1312	svchost.exe	26
PID 1312 wrote to memory of 332	1312	svchost.exe	25
PID 1312 wrote to memory of 332	1312	svchost.exe	25
PID 1312 wrote to memory of 332	1312	svchost.exe	25
PID 1312 wrote to memory of 332	1312	svchost.exe	25
PID 1312 wrote to memory of 332	1312	svchost.exe	25
PID 1312 wrote to memory of 368	1312	svchost.exe	5
PID 1312 wrote to memory of 368	1312	svchost.exe	5
PID 1312 wrote to memory of 368	1312	svchost.exe	5
PID 1312 wrote to memory of 368	1312	svchost.exe	5
PID 1312 wrote to memory of 368	1312	svchost.exe	5
PID 1312 wrote to memory of 376	1312	svchost.exe	4
PID 1312 wrote to memory of 376	1312	svchost.exe	4
PID 1312 wrote to memory of 376	1312	svchost.exe	4
PID 1312 wrote to memory of 376	1312	svchost.exe	4
PID 1312 wrote to memory of 376	1312	svchost.exe	4
PID 1312 wrote to memory of 416	1312	svchost.exe	3
PID 1312 wrote to memory of 416	1312	svchost.exe	3
PID 1312 wrote to memory of 416	1312	svchost.exe	3
PID 1312 wrote to memory of 416	1312	svchost.exe	3
PID 1312 wrote to memory of 416	1312	svchost.exe	3
PID 1312 wrote to memory of 460	1312	svchost.exe	2
PID 1312 wrote to memory of 460	1312	svchost.exe	2
PID 1312 wrote to memory of 460	1312	svchost.exe	2
PID 1312 wrote to memory of 460	1312	svchost.exe	2
PID 1312 wrote to memory of 460	1312	svchost.exe	2
PID 1312 wrote to memory of 476	1312	svchost.exe	1
PID 1312 wrote to memory of 476	1312	svchost.exe	1
PID 1312 wrote to memory of 476	1312	svchost.exe	1
PID 1312 wrote to memory of 476	1312	svchost.exe	1
PID 1312 wrote to memory of 476	1312	svchost.exe	1
PID 1312 wrote to memory of 484	1312	svchost.exe	24
PID 1312 wrote to memory of 484	1312	svchost.exe	24
PID 1312 wrote to memory of 484	1312	svchost.exe	24
PID 1312 wrote to memory of 484	1312	svchost.exe	24
PID 1312 wrote to memory of 484	1312	svchost.exe	24

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:756
- C:\Windows\system32\taskhost.exe
  "taskhost.exe"
  2⤵
  PID:1224
- C:\Windows\system32\sppsvc.exe
  C:\Windows\system32\sppsvc.exe
  2⤵
  PID:1680
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
  2⤵
  PID:1644
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork
  2⤵
  PID:1052
- C:\Windows\System32\spoolsv.exe
  C:\Windows\System32\spoolsv.exe
  2⤵
  PID:452
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k NetworkService
  2⤵
  PID:336
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k netsvcs
  2⤵
  PID:888
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalService
  2⤵
  PID:844
- C:\Windows\System32\svchost.exe
  C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted
  2⤵
  PID:816
- 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 DcomLaunch
  2⤵
  PID:600

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\wbem\WMIADAP.EXE
wmiadap.exe /F /T /R
1⤵
PID:1136

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1396
- C:\Users\Admin\AppData\Local\Temp\88903d08f3fcb8438da72eb0a0b01deb4b0154b69e636df35f745b1aedd42fa1.exe
  "C:\Users\Admin\AppData\Local\Temp\88903d08f3fcb8438da72eb0a0b01deb4b0154b69e636df35f745b1aedd42fa1.exe"
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of UnmapMainImage
  - Suspicious use of WriteProcessMemory
  PID:916
- - 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:852
  - - 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:1724
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\system32\svchost.exe
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:1312

C:\Windows\system32\Dwm.exe
"C:\Windows\system32\Dwm.exe"
1⤵
PID:1340

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
96KB

MD5
54284d3c667dd6a26da9598714047caa

SHA1
a24f0cd36dcf926aaf34892e91bcf6789d770fc6

SHA256
88903d08f3fcb8438da72eb0a0b01deb4b0154b69e636df35f745b1aedd42fa1

SHA512
151ddd215abada6a3fe4e36f8bab5c84ec166220c979f56fbcd136c8bfec82b3c3d48f3d699eed1d3d03dbaf02fae9e5678bc39516515b87a517c176bbfd17a4

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

Filesize
96KB

MD5
54284d3c667dd6a26da9598714047caa

SHA1
a24f0cd36dcf926aaf34892e91bcf6789d770fc6

SHA256
88903d08f3fcb8438da72eb0a0b01deb4b0154b69e636df35f745b1aedd42fa1

SHA512
151ddd215abada6a3fe4e36f8bab5c84ec166220c979f56fbcd136c8bfec82b3c3d48f3d699eed1d3d03dbaf02fae9e5678bc39516515b87a517c176bbfd17a4

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

Filesize
96KB

MD5
54284d3c667dd6a26da9598714047caa

SHA1
a24f0cd36dcf926aaf34892e91bcf6789d770fc6

SHA256
88903d08f3fcb8438da72eb0a0b01deb4b0154b69e636df35f745b1aedd42fa1

SHA512
151ddd215abada6a3fe4e36f8bab5c84ec166220c979f56fbcd136c8bfec82b3c3d48f3d699eed1d3d03dbaf02fae9e5678bc39516515b87a517c176bbfd17a4

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

Filesize
96KB

MD5
54284d3c667dd6a26da9598714047caa

SHA1
a24f0cd36dcf926aaf34892e91bcf6789d770fc6

SHA256
88903d08f3fcb8438da72eb0a0b01deb4b0154b69e636df35f745b1aedd42fa1

SHA512
151ddd215abada6a3fe4e36f8bab5c84ec166220c979f56fbcd136c8bfec82b3c3d48f3d699eed1d3d03dbaf02fae9e5678bc39516515b87a517c176bbfd17a4

Download Submit
memory/852-80-0x0000000000400000-0x0000000000436000-memory.dmp

Filesize
216KB

Download
memory/852-188-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/852-79-0x0000000000400000-0x0000000000436000-memory.dmp

Filesize
216KB

Download
memory/916-57-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/916-58-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/916-62-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/916-54-0x0000000076871000-0x0000000076873000-memory.dmp

Filesize
8KB

Download
memory/1312-83-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/1312-86-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/1724-75-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1724-81-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1724-71-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1724-189-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download