c89c74a42dc7e8ba62490a3f73f031caec9ec3579bc69d169abc2bfd2e3719d2

Analysis

max time kernel
150s
max time network
123s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
22/09/2023, 18:10

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General

Target

PLV.exe
Size

5.4MB
MD5

ac5a067a49c0347a26cb08dbf77f45b2
SHA1

961323bf26e320183019c6a759373017fa1d1ec2
SHA256

c89c74a42dc7e8ba62490a3f73f031caec9ec3579bc69d169abc2bfd2e3719d2
SHA512

fecabc22397856af602384d99f017ecb2b3624d96ae6fcc95f34b860fcb8b4c94c6e957b120762499ea72de7ca9b0e628252196093ec12f57b176641b8c00d94
SSDEEP

98304:cAWVhcggbXvZnyKbxK0UiIeYjRJFpFx9e+11:cHyLKN/eeRJpHv1

Score

10^/10

evasion

Malware Config

Signatures

Suspicious use of NtCreateUserProcessOtherParentProcess 6 IoCs

description	pid	Process	procid_target
PID 2208 created 1348	2208	PLV.exe	13
PID 2208 created 1348	2208	PLV.exe	13
PID 2208 created 1348	2208	PLV.exe	13
PID 2208 created 1348	2208	PLV.exe	13
PID 2208 created 1348	2208	PLV.exe	13
PID 2208 created 1348	2208	PLV.exe	13

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File created	C:\Windows\System32\drivers\etc\hosts	PLV.exe

Stops running service(s) 3 TTPs
evasion

Windows Service
T1543.003

Impair Defenses
T1562

Service Stop
T1489

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\system32\logfiles\scm\b658a6ea-f2cf-4afd-9a5b-3562a6435173	services.exe
File opened for modification	C:\Windows\System32\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2208 set thread context of 2592	2208	PLV.exe	39

Launches sc.exe 5 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
2684	sc.exe
2708	sc.exe
2616	sc.exe
2608	sc.exe
2672	sc.exe

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
800	schtasks.exe

Enumerates system info in registry 2 TTPs 32 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\Identifier	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\Configuration Data	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\KeyboardController\0\Identifier	csrss.exe
Key queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\KeyboardController\0\Component Information	csrss.exe
Key queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\KeyboardController\0\KeyboardPeripheral	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\KeyboardController\0\KeyboardPeripheral\0\Component Information	csrss.exe
Key queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\KeyboardController	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\KeyboardController\0\KeyboardPeripheral\0\Configuration Data	csrss.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0	csrss.exe
Key enumerated	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\1\Component Information	csrss.exe
Key queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\1	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\2\Component Information	csrss.exe
Key queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter	csrss.exe
Key queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\2	csrss.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\SYSTEM\MultifunctionAdapter\0\KeyboardController	csrss.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\SYSTEM\MultifunctionAdapter\0\KeyboardController\0\KeyboardPeripheral\0	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\KeyboardController\0\KeyboardPeripheral\0\Identifier	csrss.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\1\Configuration Data	csrss.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\SYSTEM\MultifunctionAdapter\0\KeyboardController\0\KeyboardPeripheral	csrss.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\1	csrss.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\2	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\KeyboardController\0\Configuration Data	csrss.exe
Key enumerated	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\2\Identifier	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\Component Information	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\1\Identifier	csrss.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\SYSTEM\MultifunctionAdapter\1\KeyboardController	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\2\Configuration Data	csrss.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\SYSTEM\MultifunctionAdapter\0\KeyboardController\0	csrss.exe

Modifies data under HKEY_USERS 9 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\ThemeManager	winlogon.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\ThemeManager\ThemeActive = "1"	winlogon.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\ThemeManager\LoadedBefore = "1"	winlogon.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\ThemeManager\DllName = "%SystemRoot%\\resources\\themes\\Aero\\Aero.msstyles"	winlogon.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\ThemeManager\ColorName = "NormalColor"	winlogon.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Control Panel\Desktop\MuiCached\MachinePreferredUILanguages = 65006e002d00550053000000	winlogon.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\ThemeManager\LastLoadedDPI = "96"	winlogon.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\ThemeManager\SizeName = "NormalSize"	winlogon.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\ThemeManager\LastUserLangID = "1033"	winlogon.exe

Suspicious behavior: EnumeratesProcesses 17 IoCs

pid	Process
2208	PLV.exe
2208	PLV.exe
2068	powershell.exe
2208	PLV.exe
2208	PLV.exe
2208	PLV.exe
2208	PLV.exe
2208	PLV.exe
2208	PLV.exe
2208	PLV.exe
2208	PLV.exe
2592	dialer.exe
2592	dialer.exe
2592	dialer.exe
2592	dialer.exe
2208	PLV.exe
2208	PLV.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	2068	powershell.exe
Token: SeShutdownPrivilege	2880	powercfg.exe
Token: SeDebugPrivilege	2592	dialer.exe
Token: SeShutdownPrivilege	2744	powercfg.exe
Token: SeShutdownPrivilege	1428	powercfg.exe
Token: SeShutdownPrivilege	1900	LogonUI.exe
Token: SeShutdownPrivilege	1900	LogonUI.exe

Suspicious use of WriteProcessMemory 44 IoCs

description	pid	Process	procid_target
PID 1092 wrote to memory of 2608	1092	cmd.exe	32
PID 1092 wrote to memory of 2608	1092	cmd.exe	32
PID 1092 wrote to memory of 2608	1092	cmd.exe	32
PID 1092 wrote to memory of 2672	1092	cmd.exe	33
PID 1092 wrote to memory of 2672	1092	cmd.exe	33
PID 1092 wrote to memory of 2672	1092	cmd.exe	33
PID 1092 wrote to memory of 2684	1092	cmd.exe	34
PID 1092 wrote to memory of 2684	1092	cmd.exe	34
PID 1092 wrote to memory of 2684	1092	cmd.exe	34
PID 1092 wrote to memory of 2708	1092	cmd.exe	35
PID 1092 wrote to memory of 2708	1092	cmd.exe	35
PID 1092 wrote to memory of 2708	1092	cmd.exe	35
PID 1092 wrote to memory of 2616	1092	cmd.exe	36
PID 1092 wrote to memory of 2616	1092	cmd.exe	36
PID 1092 wrote to memory of 2616	1092	cmd.exe	36
PID 2208 wrote to memory of 2592	2208	PLV.exe	39
PID 2568 wrote to memory of 2880	2568	cmd.exe	41
PID 2568 wrote to memory of 2880	2568	cmd.exe	41
PID 2568 wrote to memory of 2880	2568	cmd.exe	41
PID 2568 wrote to memory of 2744	2568	cmd.exe	43
PID 2568 wrote to memory of 2744	2568	cmd.exe	43
PID 2568 wrote to memory of 2744	2568	cmd.exe	43
PID 2592 wrote to memory of 420	2592	dialer.exe	3
PID 2592 wrote to memory of 468	2592	dialer.exe	2
PID 2568 wrote to memory of 1428	2568	cmd.exe	44
PID 2568 wrote to memory of 1428	2568	cmd.exe	44
PID 2568 wrote to memory of 1428	2568	cmd.exe	44
PID 2592 wrote to memory of 476	2592	dialer.exe	1
PID 2568 wrote to memory of 552	2568	cmd.exe	46
PID 2568 wrote to memory of 552	2568	cmd.exe	46
PID 2568 wrote to memory of 552	2568	cmd.exe	46
PID 2764 wrote to memory of 1900	2764	csrss.exe	54
PID 2764 wrote to memory of 1900	2764	csrss.exe	54
PID 2004 wrote to memory of 1900	2004	winlogon.exe	54
PID 2004 wrote to memory of 1900	2004	winlogon.exe	54
PID 2004 wrote to memory of 1900	2004	winlogon.exe	54
PID 2764 wrote to memory of 1900	2764	csrss.exe	54
PID 2764 wrote to memory of 1900	2764	csrss.exe	54
PID 2764 wrote to memory of 1900	2764	csrss.exe	54
PID 2764 wrote to memory of 1900	2764	csrss.exe	54
PID 2764 wrote to memory of 1900	2764	csrss.exe	54
PID 2764 wrote to memory of 1900	2764	csrss.exe	54
PID 2764 wrote to memory of 1900	2764	csrss.exe	54
PID 2764 wrote to memory of 1900	2764	csrss.exe	54

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Windows\system32\lsass.exe
C:\Windows\system32\lsass.exe
1⤵
PID:476

C:\Windows\system32\services.exe
C:\Windows\system32\services.exe
1⤵
- Drops file in System32 directory
PID:468

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

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1348
- C:\Users\Admin\AppData\Local\Temp\PLV.exe
  "C:\Users\Admin\AppData\Local\Temp\PLV.exe"
  2⤵
  - Suspicious use of NtCreateUserProcessOtherParentProcess
  - Drops file in Drivers directory
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2208
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Add-MpPreference -ExclusionPath @($env:UserProfile, $env:ProgramFiles) -Force
  2⤵
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2068
- C:\Windows\System32\cmd.exe
  C:\Windows\System32\cmd.exe /c sc stop UsoSvc & sc stop WaaSMedicSvc & sc stop wuauserv & sc stop bits & sc stop dosvc
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1092
- - C:\Windows\System32\sc.exe
    sc stop UsoSvc
    3⤵
    - Launches sc.exe
    PID:2608
- - C:\Windows\System32\sc.exe
    sc stop WaaSMedicSvc
    3⤵
    - Launches sc.exe
    PID:2672
- - C:\Windows\System32\sc.exe
    sc stop wuauserv
    3⤵
    - Launches sc.exe
    PID:2684
- - C:\Windows\System32\sc.exe
    sc stop bits
    3⤵
    - Launches sc.exe
    PID:2708
- - C:\Windows\System32\sc.exe
    sc stop dosvc
    3⤵
    - Launches sc.exe
    PID:2616
- C:\Windows\System32\cmd.exe
  C:\Windows\System32\cmd.exe /c powercfg /x -hibernate-timeout-ac 0 & powercfg /x -hibernate-timeout-dc 0 & powercfg /x -standby-timeout-ac 0 & powercfg /x -standby-timeout-dc 0
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2568
- - C:\Windows\System32\powercfg.exe
    powercfg /x -hibernate-timeout-ac 0
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2880
- - C:\Windows\System32\powercfg.exe
    powercfg /x -hibernate-timeout-dc 0
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2744
- - C:\Windows\System32\powercfg.exe
    powercfg /x -standby-timeout-ac 0
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:1428
- - C:\Windows\System32\powercfg.exe
    powercfg /x -standby-timeout-dc 0
    3⤵
    PID:552
- C:\Windows\System32\dialer.exe
  C:\Windows\System32\dialer.exe
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2592
- C:\Windows\System32\schtasks.exe
  C:\Windows\System32\schtasks.exe /delete /f /tn "GoogleUpdateForcefully"
  2⤵
  PID:2472
- C:\Windows\System32\schtasks.exe
  C:\Windows\System32\schtasks.exe /create /f /tn "GoogleUpdateForcefully" /xml "C:\Users\Admin\AppData\Local\Temp\iwzulyohcyoo.xml"
  2⤵
  - Creates scheduled task(s)
  PID:800

C:\Windows\system32\Dwm.exe
"C:\Windows\system32\Dwm.exe"
1⤵
PID:1392

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⤵
- Enumerates system info in registry
- Suspicious use of WriteProcessMemory
PID:2764

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of WriteProcessMemory
PID:2004
- C:\Windows\system32\LogonUI.exe
  "LogonUI.exe" /flags:0x0
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1900

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Scheduled Task/Job

T1053

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

Scheduled Task/Job

T1053

Defense Evasion

Impair Defenses

T1562

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Service Stop

T1489

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\iwzulyohcyoo.xml

Filesize
1KB

MD5
84ee42fe9a79a7eb9c9f96ab678af294

SHA1
62406990bcda0de8354575147aa07161be1ab194

SHA256
1e806c8c561abb9100a544eca8894f0c9b98f0859d92b277b6b511125f5c7427

SHA512
78ca886963a281e1164d6baebc285f62724b2a160d060b3bec43b5e0df0c6a13b58b36339318993e1306e86360ed591f2d2ffdf4af3f46b0aceacf9cbee66710

Download Submit
memory/420-22-0x0000000000850000-0x000000000087B000-memory.dmp

Filesize
172KB

Download
memory/420-19-0x0000000000820000-0x0000000000844000-memory.dmp

Filesize
144KB

Download
memory/420-20-0x0000000000850000-0x000000000087B000-memory.dmp

Filesize
172KB

Download
memory/420-18-0x0000000000820000-0x0000000000844000-memory.dmp

Filesize
144KB

Download
memory/420-21-0x000007FEBF720000-0x000007FEBF730000-memory.dmp

Filesize
64KB

Download
memory/468-51-0x0000000000120000-0x000000000014B000-memory.dmp

Filesize
172KB

Download
memory/468-41-0x00000000776D1000-0x00000000776D2000-memory.dmp

Filesize
4KB

Download
memory/468-30-0x0000000000120000-0x000000000014B000-memory.dmp

Filesize
172KB

Download
memory/468-34-0x00000000376C0000-0x00000000376D0000-memory.dmp

Filesize
64KB

Download
memory/468-32-0x000007FEBF720000-0x000007FEBF730000-memory.dmp

Filesize
64KB

Download
memory/476-35-0x00000000004E0000-0x000000000050B000-memory.dmp

Filesize
172KB

Download
memory/476-40-0x00000000376C0000-0x00000000376D0000-memory.dmp

Filesize
64KB

Download
memory/476-46-0x00000000004E0000-0x000000000050B000-memory.dmp

Filesize
172KB

Download
memory/476-39-0x000007FEBF720000-0x000007FEBF730000-memory.dmp

Filesize
64KB

Download
memory/476-52-0x00000000004E0000-0x000000000050B000-memory.dmp

Filesize
172KB

Download
memory/1900-53-0x0000000002760000-0x0000000002761000-memory.dmp

Filesize
4KB

Download
memory/1900-50-0x0000000002760000-0x0000000002761000-memory.dmp

Filesize
4KB

Download
memory/2068-9-0x000007FEF5870000-0x000007FEF620D000-memory.dmp

Filesize
9.6MB

Download
memory/2068-8-0x00000000026D0000-0x0000000002750000-memory.dmp

Filesize
512KB

Download
memory/2068-10-0x00000000026D0000-0x0000000002750000-memory.dmp

Filesize
512KB

Download
memory/2068-7-0x000007FEF5870000-0x000007FEF620D000-memory.dmp

Filesize
9.6MB

Download
memory/2068-11-0x000007FEF5870000-0x000007FEF620D000-memory.dmp

Filesize
9.6MB

Download
memory/2068-6-0x0000000002460000-0x0000000002468000-memory.dmp

Filesize
32KB

Download
memory/2068-5-0x000000001B1D0000-0x000000001B4B2000-memory.dmp

Filesize
2.9MB

Download
memory/2208-25-0x000000013F1A0000-0x000000013F709000-memory.dmp

Filesize
5.4MB

Download
memory/2208-0-0x000000013F1A0000-0x000000013F709000-memory.dmp

Filesize
5.4MB

Download
memory/2208-43-0x000000013F1A0000-0x000000013F709000-memory.dmp

Filesize
5.4MB

Download
memory/2592-15-0x0000000077680000-0x0000000077829000-memory.dmp

Filesize
1.7MB

Download
memory/2592-47-0x0000000077680000-0x0000000077829000-memory.dmp

Filesize
1.7MB

Download
memory/2592-36-0x0000000140000000-0x000000014002B000-memory.dmp

Filesize
172KB

Download
memory/2592-17-0x0000000077560000-0x000000007767F000-memory.dmp

Filesize
1.1MB

Download