netsupport | f76b4b34066533b5484ea308fb1475e1c4e63e861770f51ec4fdb6fc8d414941

Analysis

max time kernel
190s
max time network
294s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
22/08/2024, 22:46

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General

Target

f76b4b34066533b5484ea308fb1475e1c4e63e861770f51ec4fdb6fc8d414941.ps1
Size

2KB
MD5

b4c4c63eb1fd1bde068d7a7f8bced385
SHA1

00c3c94cba10abecd56eb5f0832aaf4f7c546fa0
SHA256

f76b4b34066533b5484ea308fb1475e1c4e63e861770f51ec4fdb6fc8d414941
SHA512

fa613c069967b078aa26d9de953ec2caf8f47ced2d013df2acde3017a69cb79bcb31bbafa4125a1f95d34cfdc71c62775f4bebf134972ddd64c40fbf73358a08

Score

10^/10

netsupport discovery execution persistence rat

Malware Config

Signatures

NetSupport
NetSupport is a remote access tool sold as a legitimate system administration software.
rat netsupport

Executes dropped EXE 1 IoCs

pid	Process
4692	client32.exe

Loads dropped DLL 6 IoCs

pid	Process
4692	client32.exe
4692	client32.exe
4692	client32.exe
4692	client32.exe
4692	client32.exe
4692	client32.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-873560699-1074803302-2326074425-1000\Software\Microsoft\Windows\CurrentVersion\Run\BrowsingCache = "C:\\Users\\Admin\\AppData\\Roaming\\BrowsingCache\\client32.exe"	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
5068	powershell.exe

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	client32.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
5068	powershell.exe
5068	powershell.exe
5068	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5068	powershell.exe
Token: SeSecurityPrivilege	4692	client32.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4692	client32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5068 wrote to memory of 4692	5068	powershell.exe	76
PID 5068 wrote to memory of 4692	5068	powershell.exe	76
PID 5068 wrote to memory of 4692	5068	powershell.exe	76

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\f76b4b34066533b5484ea308fb1475e1c4e63e861770f51ec4fdb6fc8d414941.ps1
1⤵
- Adds Run key to start application
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5068
- C:\Users\Admin\AppData\Roaming\BrowsingCache\client32.exe
  "C:\Users\Admin\AppData\Roaming\BrowsingCache\client32.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  PID:4692

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kbbh1n1u.514.ps1

Filesize
1B

MD5
c4ca4238a0b923820dcc509a6f75849b

SHA1
356a192b7913b04c54574d18c28d46e6395428ab

SHA256
6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b

SHA512
4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a

Download Submit
C:\Users\Admin\AppData\Roaming\BrowsingCache\HTCTL32.DLL

Filesize
320KB

MD5
2d3b207c8a48148296156e5725426c7f

SHA1
ad464eb7cf5c19c8a443ab5b590440b32dbc618f

SHA256
edfe2b923bfb5d1088de1611401f5c35ece91581e71503a5631647ac51f7d796

SHA512
55c791705993b83c9b26a8dbd545d7e149c42ee358ecece638128ee271e85b4fdbfd6fbae61d13533bf39ae752144e2cc2c5edcda955f18c37a785084db0860c

Download Submit
C:\Users\Admin\AppData\Roaming\BrowsingCache\NSM.LIC

Filesize
259B

MD5
b8bdfa6ca3fe9cbfc46824e8355c3622

SHA1
fb5384eca34ff76723b947dd6b0e5ac1ed60a959

SHA256
be556bc2c58e56e6054ec017df771cf086cb6e4bfeafa5e6f2da5e6068ee1262

SHA512
0d9a35e7c264fcfd97774d3e9454d032f5dbbdff7e6eac3985b1133985bc27f7b86a04bbf70899c9374b766ccb395417ee51ea4e6ebe028e4244a156448d651b

Download Submit
C:\Users\Admin\AppData\Roaming\BrowsingCache\PCICL32.dll

Filesize
3.5MB

MD5
ad51946b1659ed61b76ff4e599e36683

SHA1
dfe2439424886e8acf9fa3ffde6caaf7bfdd583e

SHA256
07a191254362664b3993479a277199f7ea5ee723b6c25803914eedb50250acf4

SHA512
6c30e7793f69508f6d9aa6edcec6930ba361628ef597e32c218e15d80586f5a86d89fcbee63a35eab7b1e0ae26277512f4c1a03df7912f9b7ff9a9a858cf3962

Download Submit
C:\Users\Admin\AppData\Roaming\BrowsingCache\client32.exe

Filesize
54KB

MD5
9497aece91e1ccc495ca26ae284600b9

SHA1
a005d8ce0c1ea8901c1b4ea86c40f4925bd2c6da

SHA256
1b63f83f06dbd9125a6983a36e0dbd64026bb4f535e97c5df67c1563d91eff89

SHA512
4c892e5029a707bcf73b85ac110d8078cb273632b68637e9b296a7474ab0202320ff24cf6206de04af08abf087654b0d80cbecfae824c06616c47ce93f0929c9

Download Submit
C:\Users\Admin\AppData\Roaming\BrowsingCache\client32.ini

Filesize
646B

MD5
f0add3a3b594faa631f091ba20e3f9c4

SHA1
bca5a57eaff07dfe203de805cc5c96caa25cd8b8

SHA256
73c7ab7d2611ce18a3ff36440f92b005d6ee24d5aa2d28ac233897ebed61f111

SHA512
7722bee3c35724272e46e113e150d1fbaa0125038ff12ea23c8c35b7b939da069f44dce0d4040966c97435fb60683378def7c69a1766094aaf1d35217c7385bb

Download Submit
C:\Users\Admin\AppData\Roaming\BrowsingCache\pcicapi.dll

Filesize
32KB

MD5
dcde2248d19c778a41aa165866dd52d0

SHA1
7ec84be84fe23f0b0093b647538737e1f19ebb03

SHA256
9074fd40ea6a0caa892e6361a6a4e834c2e51e6e98d1ffcda7a9a537594a6917

SHA512
c5d170d420f1aeb9bcd606a282af6e8da04ae45c83d07faaacb73ff2e27f4188b09446ce508620124f6d9b447a40a23620cfb39b79f02b04bb9e513866352166

Download Submit
\Users\Admin\AppData\Roaming\BrowsingCache\PCICHEK.DLL

Filesize
18KB

MD5
a0b9388c5f18e27266a31f8c5765b263

SHA1
906f7e94f841d464d4da144f7c858fa2160e36db

SHA256
313117e723dda6ea3911faacd23f4405003fb651c73de8deff10b9eb5b4a058a

SHA512
6051a0b22af135b4433474dc7c6f53fb1c06844d0a30ed596a3c6c80644df511b023e140c4878867fa2578c79695fac2eb303aea87c0ecfc15a4ad264bd0b3cd

Download Submit
\Users\Admin\AppData\Roaming\BrowsingCache\msvcr100.dll

Filesize
755KB

MD5
0e37fbfa79d349d672456923ec5fbbe3

SHA1
4e880fc7625ccf8d9ca799d5b94ce2b1e7597335

SHA256
8793353461826fbd48f25ea8b835be204b758ce7510db2af631b28850355bd18

SHA512
2bea9bd528513a3c6a54beac25096ee200a4e6ccfc2a308ae9cfd1ad8738e2e2defd477d59db527a048e5e9a4fe1fc1d771701de14ef82b4dbcdc90df0387630

Download Submit
memory/5068-10-0x00007FFF8D650000-0x00007FFF8E03C000-memory.dmp

Filesize
9.9MB

Download
memory/5068-171-0x0000026C7D7E0000-0x0000026C7D7EA000-memory.dmp

Filesize
40KB

Download
memory/5068-158-0x0000026C7D8A0000-0x0000026C7D8B2000-memory.dmp

Filesize
72KB

Download
memory/5068-128-0x0000026C7D880000-0x0000026C7D892000-memory.dmp

Filesize
72KB

Download
memory/5068-89-0x0000026C65200000-0x0000026C65222000-memory.dmp

Filesize
136KB

Download
memory/5068-133-0x00007FFF8D650000-0x00007FFF8E03C000-memory.dmp

Filesize
9.9MB

Download
memory/5068-0-0x00007FFF8D653000-0x00007FFF8D654000-memory.dmp

Filesize
4KB

Download
memory/5068-144-0x00007FFF8D650000-0x00007FFF8E03C000-memory.dmp

Filesize
9.9MB

Download
memory/5068-341-0x00007FFF8D650000-0x00007FFF8E03C000-memory.dmp

Filesize
9.9MB

Download
memory/5068-9-0x0000026C7D800000-0x0000026C7D876000-memory.dmp

Filesize
472KB

Download
memory/5068-8-0x00007FFF8D650000-0x00007FFF8E03C000-memory.dmp

Filesize
9.9MB

Download
memory/5068-5-0x0000026C651B0000-0x0000026C651D2000-memory.dmp

Filesize
136KB

Download