fb97d6ec1b1de59c4f02b55c8f95e756a13f9119f4bd08e77e832890ae529317

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
09/08/2024, 15:50

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General

Target

Koa_Paid_Tweak_Tool.bat
Size

87KB
MD5

2523b7ade7ef2ab0364cf7af2480780b
SHA1

f0a796bbe87cbedb2422f1a30ed679910b16eec8
SHA256

fb97d6ec1b1de59c4f02b55c8f95e756a13f9119f4bd08e77e832890ae529317
SHA512

3cef3cd7f42f3950ae5d683762747cbc8fbbeba37d8e761e2dffb6ac2469db992023407ed8dd62f2f4bcdc3be91c3de03b8af834a93e423651f1c3548cd9fe3a
SSDEEP

384:0jW4urpgB0TBp1uFuyIBmGlngbuPPqoeV9WIblw8WGDyLNZfKGDyLNZfU9a1QL:n80TBWQyEjPqoC9yiU0QL

Score

10^/10

evasion execution trojan

Malware Config

Signatures

UAC bypass 3 TTPs 1 IoCs

evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	reg.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2504	powershell.exe
3044	powershell.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\INF\setupapi.ev1	DrvInst.exe
File opened for modification	C:\Windows\INF\setupapi.dev.log	DrvInst.exe
File opened for modification	C:\Windows\INF\setupapi.ev3	DrvInst.exe

Modifies data under HKEY_USERS 43 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\CA\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\CA\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\CA\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\SmartCardRoot\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\Disallowed\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\Root\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\trust\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\trust\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\Disallowed\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\Root\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\SmartCardRoot\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\TrustedPeople\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	DrvInst.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\LanguageList = 65006e002d0055005300000065006e0000000000	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\CA\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\TrustedPeople\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\TrustedPeople\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\trust\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\CA\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\Root\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\SmartCardRoot\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\trust\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\trust\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\CA\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\trust\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\My	DrvInst.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2504	powershell.exe
3044	powershell.exe

Suspicious use of AdjustPrivilegeToken 15 IoCs

description	pid	Process
Token: SeDebugPrivilege	2504	powershell.exe
Token: SeDebugPrivilege	3044	powershell.exe
Token: SeBackupPrivilege	2888	vssvc.exe
Token: SeRestorePrivilege	2888	vssvc.exe
Token: SeAuditPrivilege	2888	vssvc.exe
Token: SeRestorePrivilege	1432	DrvInst.exe
Token: SeRestorePrivilege	1432	DrvInst.exe
Token: SeRestorePrivilege	1432	DrvInst.exe
Token: SeRestorePrivilege	1432	DrvInst.exe
Token: SeRestorePrivilege	1432	DrvInst.exe
Token: SeRestorePrivilege	1432	DrvInst.exe
Token: SeRestorePrivilege	1432	DrvInst.exe
Token: SeLoadDriverPrivilege	1432	DrvInst.exe
Token: SeLoadDriverPrivilege	1432	DrvInst.exe
Token: SeLoadDriverPrivilege	1432	DrvInst.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 1640 wrote to memory of 2376	1640	cmd.exe	31
PID 1640 wrote to memory of 2376	1640	cmd.exe	31
PID 1640 wrote to memory of 2376	1640	cmd.exe	31
PID 1640 wrote to memory of 2384	1640	cmd.exe	32
PID 1640 wrote to memory of 2384	1640	cmd.exe	32
PID 1640 wrote to memory of 2384	1640	cmd.exe	32
PID 1640 wrote to memory of 2560	1640	cmd.exe	33
PID 1640 wrote to memory of 2560	1640	cmd.exe	33
PID 1640 wrote to memory of 2560	1640	cmd.exe	33
PID 1640 wrote to memory of 2124	1640	cmd.exe	34
PID 1640 wrote to memory of 2124	1640	cmd.exe	34
PID 1640 wrote to memory of 2124	1640	cmd.exe	34
PID 1640 wrote to memory of 2060	1640	cmd.exe	35
PID 1640 wrote to memory of 2060	1640	cmd.exe	35
PID 1640 wrote to memory of 2060	1640	cmd.exe	35
PID 1640 wrote to memory of 2504	1640	cmd.exe	36
PID 1640 wrote to memory of 2504	1640	cmd.exe	36
PID 1640 wrote to memory of 2504	1640	cmd.exe	36
PID 1640 wrote to memory of 3044	1640	cmd.exe	40
PID 1640 wrote to memory of 3044	1640	cmd.exe	40
PID 1640 wrote to memory of 3044	1640	cmd.exe	40
PID 1640 wrote to memory of 2604	1640	cmd.exe	44
PID 1640 wrote to memory of 2604	1640	cmd.exe	44
PID 1640 wrote to memory of 2604	1640	cmd.exe	44
PID 1640 wrote to memory of 1756	1640	cmd.exe	45
PID 1640 wrote to memory of 1756	1640	cmd.exe	45
PID 1640 wrote to memory of 1756	1640	cmd.exe	45

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\Koa_Paid_Tweak_Tool.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:1640
- C:\Windows\system32\reg.exe
  Reg.exe ADD "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System" /v "EnableLUA" /t REG_DWORD /d "0" /f
  2⤵
  - UAC bypass
  PID:2376
- C:\Windows\system32\reg.exe
  Reg.exe add "HKCU\CONSOLE" /v "VirtualTerminalLevel" /t REG_DWORD /d "1" /f
  2⤵
  PID:2384
- C:\Windows\system32\reg.exe
  Reg.exe delete "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WindowsNT\CurrentVersion\SystemRestore" /v "RPSessionInterval" /f
  2⤵
  PID:2560
- C:\Windows\system32\reg.exe
  Reg.exe delete "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WindowsNT\CurrentVersion\SystemRestore" /v "DisableConfig" /f
  2⤵
  PID:2124
- C:\Windows\system32\reg.exe
  Reg.exe add "HKLM\Software\Microsoft\Windows NT\CurrentVersion\SystemRestore" /v "SystemRestorePointCreationFrequency" /t REG_DWORD /d 0 /f
  2⤵
  PID:2060
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -ExecutionPolicy Unrestricted -NoProfile Enable-ComputerRestore -Drive 'C:\'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2504
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -ExecutionPolicy Bypass -Command "Checkpoint-Computer -Description 'KoaPaid' -RestorePointType 'MODIFY_SETTINGS'"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3044
- C:\Windows\system32\chcp.com
  chcp 65001
  2⤵
  PID:2604
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c "prompt #$H#$E# & echo on & for %b in (1) do rem"
  2⤵
  PID:1756

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2888

C:\Windows\system32\DrvInst.exe
DrvInst.exe "1" "200" "STORAGE\VolumeSnapshot\HarddiskVolumeSnapshot19" "" "" "61530dda3" "0000000000000000" "00000000000003AC" "0000000000000534"
1⤵
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
PID:1432

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
7KB

MD5
89eac446359ca2a5dd5d8ca7843ccbdc

SHA1
a8401783347e70964daf0ba5b88d64da2d434ef1

SHA256
ef3aaca8f57c2b55d16dd55964ae8b586298389f6ad9df14943f7686dacce464

SHA512
a5b8f26141678f101322094cc262fee70dd69282941dc1b2bb719eddbf531200cddf58cff1467fc675f74567f7145653a681f3523e41352e3e2ba4126398b519

Download Submit
memory/2504-4-0x000007FEF648E000-0x000007FEF648F000-memory.dmp

Filesize
4KB

Download
memory/2504-5-0x000000001B620000-0x000000001B902000-memory.dmp

Filesize
2.9MB

Download
memory/2504-7-0x000007FEF61D0000-0x000007FEF6B6D000-memory.dmp

Filesize
9.6MB

Download
memory/2504-6-0x0000000001D20000-0x0000000001D28000-memory.dmp

Filesize
32KB

Download
memory/2504-8-0x000007FEF61D0000-0x000007FEF6B6D000-memory.dmp

Filesize
9.6MB

Download
memory/2504-9-0x000007FEF61D0000-0x000007FEF6B6D000-memory.dmp

Filesize
9.6MB

Download
memory/2504-10-0x000007FEF61D0000-0x000007FEF6B6D000-memory.dmp

Filesize
9.6MB

Download
memory/2504-11-0x000007FEF61D0000-0x000007FEF6B6D000-memory.dmp

Filesize
9.6MB

Download
memory/3044-17-0x000000001B6D0000-0x000000001B9B2000-memory.dmp

Filesize
2.9MB

Download
memory/3044-18-0x0000000002290000-0x0000000002298000-memory.dmp

Filesize
32KB

Download