13619f1852111ddb9f7ab75fd5469c7d34ae7b43e12b6f67624f5fd27dd4c7a8

Analysis

max time kernel
151s
max time network
119s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
11/10/2022, 00:13

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General

Target

13619f1852111ddb9f7ab75fd5469c7d34ae7b43e12b6f67624f5fd27dd4c7a8.dll
Size

160KB
MD5

7d2a383d85c560e3598dbc7f0b41bf38
SHA1

6610aca6cb5adfc76895b183540e787ce3ef5725
SHA256

13619f1852111ddb9f7ab75fd5469c7d34ae7b43e12b6f67624f5fd27dd4c7a8
SHA512

ce397605d064d728e78018d5be310982b552bccff7b93cf80e243bb3f1b186f64ccca48bdee093a9329cb39cbacc47b9bd4e617d4337201ec26e52ea5f73e28c
SSDEEP

3072:5ibTTp78CcWfJkicFUQRIpvKQecm8ABDNHX:KT14pU8IpvKQJaDxX

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
2008	rundll32mgr.exe
1392	WaterMark.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2008-66-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral1/memory/1392-81-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral1/memory/1392-206-0x0000000000400000-0x0000000000426000-memory.dmp	upx

Loads dropped DLL 4 IoCs

pid	Process
840	rundll32.exe
840	rundll32.exe
2008	rundll32mgr.exe
2008	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 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\px1ED7.tmp	rundll32mgr.exe
File opened for modification	C:\Program Files (x86)\Microsoft\WaterMark.exe	rundll32mgr.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1612	840	WerFault.exe	27

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
1392	WaterMark.exe
1392	WaterMark.exe
1392	WaterMark.exe
1392	WaterMark.exe
1392	WaterMark.exe
1392	WaterMark.exe
1392	WaterMark.exe
1392	WaterMark.exe
776	svchost.exe
776	svchost.exe
776	svchost.exe
776	svchost.exe
776	svchost.exe
776	svchost.exe
776	svchost.exe
776	svchost.exe
776	svchost.exe
776	svchost.exe
776	svchost.exe
776	svchost.exe
776	svchost.exe
776	svchost.exe
776	svchost.exe
776	svchost.exe
776	svchost.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	1392	WaterMark.exe
Token: SeDebugPrivilege	776	svchost.exe
Token: SeDebugPrivilege	840	rundll32.exe
Token: SeDebugPrivilege	1612	WerFault.exe
Token: SeDebugPrivilege	1392	WaterMark.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1000 wrote to memory of 840	1000	rundll32.exe	27
PID 1000 wrote to memory of 840	1000	rundll32.exe	27
PID 1000 wrote to memory of 840	1000	rundll32.exe	27
PID 1000 wrote to memory of 840	1000	rundll32.exe	27
PID 1000 wrote to memory of 840	1000	rundll32.exe	27
PID 1000 wrote to memory of 840	1000	rundll32.exe	27
PID 1000 wrote to memory of 840	1000	rundll32.exe	27
PID 840 wrote to memory of 2008	840	rundll32.exe	28
PID 840 wrote to memory of 2008	840	rundll32.exe	28
PID 840 wrote to memory of 2008	840	rundll32.exe	28
PID 840 wrote to memory of 2008	840	rundll32.exe	28
PID 840 wrote to memory of 1612	840	rundll32.exe	29
PID 840 wrote to memory of 1612	840	rundll32.exe	29
PID 840 wrote to memory of 1612	840	rundll32.exe	29
PID 840 wrote to memory of 1612	840	rundll32.exe	29
PID 2008 wrote to memory of 1392	2008	rundll32mgr.exe	30
PID 2008 wrote to memory of 1392	2008	rundll32mgr.exe	30
PID 2008 wrote to memory of 1392	2008	rundll32mgr.exe	30
PID 2008 wrote to memory of 1392	2008	rundll32mgr.exe	30
PID 1392 wrote to memory of 344	1392	WaterMark.exe	31
PID 1392 wrote to memory of 344	1392	WaterMark.exe	31
PID 1392 wrote to memory of 344	1392	WaterMark.exe	31
PID 1392 wrote to memory of 344	1392	WaterMark.exe	31
PID 1392 wrote to memory of 344	1392	WaterMark.exe	31
PID 1392 wrote to memory of 344	1392	WaterMark.exe	31
PID 1392 wrote to memory of 344	1392	WaterMark.exe	31
PID 1392 wrote to memory of 344	1392	WaterMark.exe	31
PID 1392 wrote to memory of 344	1392	WaterMark.exe	31
PID 1392 wrote to memory of 344	1392	WaterMark.exe	31
PID 1392 wrote to memory of 776	1392	WaterMark.exe	32
PID 1392 wrote to memory of 776	1392	WaterMark.exe	32
PID 1392 wrote to memory of 776	1392	WaterMark.exe	32
PID 1392 wrote to memory of 776	1392	WaterMark.exe	32
PID 1392 wrote to memory of 776	1392	WaterMark.exe	32
PID 1392 wrote to memory of 776	1392	WaterMark.exe	32
PID 1392 wrote to memory of 776	1392	WaterMark.exe	32
PID 1392 wrote to memory of 776	1392	WaterMark.exe	32
PID 1392 wrote to memory of 776	1392	WaterMark.exe	32
PID 1392 wrote to memory of 776	1392	WaterMark.exe	32
PID 776 wrote to memory of 260	776	svchost.exe	7
PID 776 wrote to memory of 260	776	svchost.exe	7
PID 776 wrote to memory of 260	776	svchost.exe	7
PID 776 wrote to memory of 260	776	svchost.exe	7
PID 776 wrote to memory of 260	776	svchost.exe	7
PID 776 wrote to memory of 336	776	svchost.exe	6
PID 776 wrote to memory of 336	776	svchost.exe	6
PID 776 wrote to memory of 336	776	svchost.exe	6
PID 776 wrote to memory of 336	776	svchost.exe	6
PID 776 wrote to memory of 336	776	svchost.exe	6
PID 776 wrote to memory of 372	776	svchost.exe	3
PID 776 wrote to memory of 372	776	svchost.exe	3
PID 776 wrote to memory of 372	776	svchost.exe	3
PID 776 wrote to memory of 372	776	svchost.exe	3
PID 776 wrote to memory of 372	776	svchost.exe	3
PID 776 wrote to memory of 380	776	svchost.exe	1
PID 776 wrote to memory of 380	776	svchost.exe	1
PID 776 wrote to memory of 380	776	svchost.exe	1
PID 776 wrote to memory of 380	776	svchost.exe	1
PID 776 wrote to memory of 380	776	svchost.exe	1
PID 776 wrote to memory of 420	776	svchost.exe	2
PID 776 wrote to memory of 420	776	svchost.exe	2
PID 776 wrote to memory of 420	776	svchost.exe	2
PID 776 wrote to memory of 420	776	svchost.exe	2
PID 776 wrote to memory of 420	776	svchost.exe	2

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\winlogon.exe
winlogon.exe
1⤵
PID:420

C:\Windows\system32\wininit.exe
wininit.exe
1⤵
PID:372
- C:\Windows\system32\services.exe
  C:\Windows\system32\services.exe
  2⤵
  PID:464
- - C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k DcomLaunch
    3⤵
    PID:596
- - C:\Windows\system32\sppsvc.exe
    C:\Windows\system32\sppsvc.exe
    3⤵
    PID:1116
- - C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
    3⤵
    PID:980
- - C:\Windows\system32\taskhost.exe
    "taskhost.exe"
    3⤵
    PID:1240
- - C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork
    3⤵
    PID:1060
- - C:\Windows\System32\spoolsv.exe
    C:\Windows\System32\spoolsv.exe
    3⤵
    PID:540
- - C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k NetworkService
    3⤵
    PID:324
- - C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k netsvcs
    3⤵
    PID:888
- - C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalService
    3⤵
    PID:856
- - C:\Windows\System32\svchost.exe
    C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted
    3⤵
    PID:820
- - C:\Windows\System32\svchost.exe
    C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted
    3⤵
    PID:756
- - C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k RPCSS
    3⤵
    PID:676
- C:\Windows\system32\lsass.exe
  C:\Windows\system32\lsass.exe
  2⤵
  PID:480
- 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:336

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:1972

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1396
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\13619f1852111ddb9f7ab75fd5469c7d34ae7b43e12b6f67624f5fd27dd4c7a8.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1000
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\13619f1852111ddb9f7ab75fd5469c7d34ae7b43e12b6f67624f5fd27dd4c7a8.dll,#1
    3⤵
    - Loads dropped DLL
    - Drops file in System32 directory
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:840
  - - 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:2008
    - - 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:1392
      - 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:344
      - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\system32\svchost.exe
        6⤵
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:776
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 840 -s 228
      4⤵
      Program crash
      Suspicious use of AdjustPrivilegeToken
      PID:1612

C:\Windows\system32\Dwm.exe
"C:\Windows\system32\Dwm.exe"
1⤵
PID:1332

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
120KB

MD5
186a45a9b3189fdb56d59479d6f5fa85

SHA1
8be5be86d5aba4b3e6f4af077a25bdc9d1de6610

SHA256
bf449f575154998c7449749da4175c377aa6f617f82effc079c85dd5e7df8743

SHA512
bcfa06d1084d889cd3b5b3f5f5941af1e0fcdec850213a00bba709545b8f20b1acdbd480b5bc038e5010fce3f4a8ce972a6cc1e00a5012921cdc6b663daac0b7

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

Filesize
120KB

MD5
186a45a9b3189fdb56d59479d6f5fa85

SHA1
8be5be86d5aba4b3e6f4af077a25bdc9d1de6610

SHA256
bf449f575154998c7449749da4175c377aa6f617f82effc079c85dd5e7df8743

SHA512
bcfa06d1084d889cd3b5b3f5f5941af1e0fcdec850213a00bba709545b8f20b1acdbd480b5bc038e5010fce3f4a8ce972a6cc1e00a5012921cdc6b663daac0b7

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

Filesize
120KB

MD5
186a45a9b3189fdb56d59479d6f5fa85

SHA1
8be5be86d5aba4b3e6f4af077a25bdc9d1de6610

SHA256
bf449f575154998c7449749da4175c377aa6f617f82effc079c85dd5e7df8743

SHA512
bcfa06d1084d889cd3b5b3f5f5941af1e0fcdec850213a00bba709545b8f20b1acdbd480b5bc038e5010fce3f4a8ce972a6cc1e00a5012921cdc6b663daac0b7

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

Filesize
120KB

MD5
186a45a9b3189fdb56d59479d6f5fa85

SHA1
8be5be86d5aba4b3e6f4af077a25bdc9d1de6610

SHA256
bf449f575154998c7449749da4175c377aa6f617f82effc079c85dd5e7df8743

SHA512
bcfa06d1084d889cd3b5b3f5f5941af1e0fcdec850213a00bba709545b8f20b1acdbd480b5bc038e5010fce3f4a8ce972a6cc1e00a5012921cdc6b663daac0b7

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

Filesize
120KB

MD5
186a45a9b3189fdb56d59479d6f5fa85

SHA1
8be5be86d5aba4b3e6f4af077a25bdc9d1de6610

SHA256
bf449f575154998c7449749da4175c377aa6f617f82effc079c85dd5e7df8743

SHA512
bcfa06d1084d889cd3b5b3f5f5941af1e0fcdec850213a00bba709545b8f20b1acdbd480b5bc038e5010fce3f4a8ce972a6cc1e00a5012921cdc6b663daac0b7

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

Filesize
120KB

MD5
186a45a9b3189fdb56d59479d6f5fa85

SHA1
8be5be86d5aba4b3e6f4af077a25bdc9d1de6610

SHA256
bf449f575154998c7449749da4175c377aa6f617f82effc079c85dd5e7df8743

SHA512
bcfa06d1084d889cd3b5b3f5f5941af1e0fcdec850213a00bba709545b8f20b1acdbd480b5bc038e5010fce3f4a8ce972a6cc1e00a5012921cdc6b663daac0b7

Download Submit
\Windows\SysWOW64\rundll32mgr.exe

Filesize
120KB

MD5
186a45a9b3189fdb56d59479d6f5fa85

SHA1
8be5be86d5aba4b3e6f4af077a25bdc9d1de6610

SHA256
bf449f575154998c7449749da4175c377aa6f617f82effc079c85dd5e7df8743

SHA512
bcfa06d1084d889cd3b5b3f5f5941af1e0fcdec850213a00bba709545b8f20b1acdbd480b5bc038e5010fce3f4a8ce972a6cc1e00a5012921cdc6b663daac0b7

Download Submit
\Windows\SysWOW64\rundll32mgr.exe

Filesize
120KB

MD5
186a45a9b3189fdb56d59479d6f5fa85

SHA1
8be5be86d5aba4b3e6f4af077a25bdc9d1de6610

SHA256
bf449f575154998c7449749da4175c377aa6f617f82effc079c85dd5e7df8743

SHA512
bcfa06d1084d889cd3b5b3f5f5941af1e0fcdec850213a00bba709545b8f20b1acdbd480b5bc038e5010fce3f4a8ce972a6cc1e00a5012921cdc6b663daac0b7

Download Submit
memory/344-83-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/344-208-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/344-74-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/344-70-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/776-88-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/776-85-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/840-55-0x0000000076561000-0x0000000076563000-memory.dmp

Filesize
8KB

Download
memory/840-80-0x0000000000180000-0x00000000001A6000-memory.dmp

Filesize
152KB

Download
memory/840-78-0x000000006D080000-0x000000006D0A8000-memory.dmp

Filesize
160KB

Download
memory/840-79-0x0000000000180000-0x00000000001A6000-memory.dmp

Filesize
152KB

Download
memory/840-207-0x0000000000180000-0x00000000001A6000-memory.dmp

Filesize
152KB

Download
memory/1392-81-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1392-82-0x00000000001B0000-0x00000000001D6000-memory.dmp

Filesize
152KB

Download
memory/1392-206-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2008-67-0x0000000000220000-0x0000000000246000-memory.dmp

Filesize
152KB

Download
memory/2008-66-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download