netsupport | ccb1996d2a2b57b943611a8928a5a05d69003b1225b9afef40e21017de70be52

Analysis

max time kernel
207s
max time network
297s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
21-09-2024 13:40

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General

Target

update.ps1
Size

4KB
MD5

c3a9c69ae58d9f390efcdd39095ec039
SHA1

48b97a2fd63f06ce060bdff02ada6143a43221b7
SHA256

ccb1996d2a2b57b943611a8928a5a05d69003b1225b9afef40e21017de70be52
SHA512

26f467830b9c645e97109782462f7a748ff873c5b84e9b202887dc24910e8070ad9458c45f8705b946f741b9cc8f3f388a7deb667d6ca3a6a70d22478325c7d2
SSDEEP

48:RHvWvwuwB3QGjsLCO1UD09tD6ZevCO1Uw5NtDPYPkQ0bISOI03VJ8dHtLbLvlCO7:RhbYs09w4rFBEnD8dHtLXROzBCSIOI

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

Blocklisted process makes network request 3 IoCs

flow	pid	Process
2	612	powershell.exe
5	612	powershell.exe
6	612	powershell.exe

Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
2008	client32.exe

Loads dropped DLL 5 IoCs

pid	Process
2008	client32.exe
2008	client32.exe
2008	client32.exe
2008	client32.exe
2008	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\NetManager = "\"C:\\Users\\Admin\\AppData\\Roaming\\Net\\client32.exe\""	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
612	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
612	powershell.exe
612	powershell.exe
612	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	612	powershell.exe
Token: SeSecurityPrivilege	2008	client32.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2008	client32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 612 wrote to memory of 2008	612	powershell.exe	75
PID 612 wrote to memory of 2008	612	powershell.exe	75
PID 612 wrote to memory of 2008	612	powershell.exe	75

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\update.ps1
1⤵
- Blocklisted process makes network request
- Adds Run key to start application
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:612
- C:\Users\Admin\AppData\Roaming\Net\client32.exe
  "C:\Users\Admin\AppData\Roaming\Net\client32.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  PID:2008

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_p5jbdnsv.vei.ps1

Filesize
1B

MD5
c4ca4238a0b923820dcc509a6f75849b

SHA1
356a192b7913b04c54574d18c28d46e6395428ab

SHA256
6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b

SHA512
4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a

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

Filesize
316KB

MD5
051cdb6ac8e168d178e35489b6da4c74

SHA1
38c171457d160f8a6f26baa668f5c302f6c29cd1

SHA256
6562585009f15155eea9a489e474cebc4dd2a01a26d846fdd1b93fdc24b0c269

SHA512
602ab9999f7164a2d1704f712d8a622d69148eefe9a380c30bc8b310eadedf846ce6ae7940317437d5da59404d141dc2d1e0c3f954ca4ac7ae3497e56fcb4e36

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

Filesize
261B

MD5
886e4bb84e1ecc4a04ae599d76fcce1d

SHA1
3f0493bb2088af50bcc8223462db0b207354e946

SHA256
5eeb014e3b390e0c85ce72988d422dcd9de1520566b11755c70bdd9bb7376060

SHA512
f4db9038a113c4b1e2462b3e0becef2500c9532a79c8187f51d011d690bc68c6d1a99585e43136cb082bd6a232136546db50265f226ff19e67d8430306a8761f

Download Submit
C:\Users\Admin\AppData\Roaming\Net\PCICAPI.dll

Filesize
106KB

MD5
67c53a770390e8c038060a1921c20da9

SHA1
49e63af91169c8ce7ef7de3d6a6fb9f8f739fa3a

SHA256
2dfdc169dfc27462adc98dde39306de8d0526dcf4577a1a486c2eef447300689

SHA512
201e07dbccd83480d6c4d8562e6d0a9e4c52ed12895f0b91d875c2bbcc50b3b1802e11e5e829c948be302bf98ebde7fb2a99476065d1709b3bdbcd5d59a1612d

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

Filesize
101KB

MD5
c4f1b50e3111d29774f7525039ff7086

SHA1
57539c95cba0986ec8df0fcdea433e7c71b724c6

SHA256
18df68d1581c11130c139fa52abb74dfd098a9af698a250645d6a4a65efcbf2d

SHA512
005db65cedaaccc85525fb3cdab090054bb0bb9cc8c37f8210ec060f490c64945a682b5dd5d00a68ac2b8c58894b6e7d938acaa1130c1cc5667e206d38b942c5

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

Filesize
770B

MD5
b6b1ea30311d753c00da49d522b7872c

SHA1
af0017e8454294878a766a1baf11aae484eb494a

SHA256
604595779555e715b94e0b6615fc7397f2ae492efcc68d64bade165cba1c588d

SHA512
26a17e12a6d674887ebbdbb71d12c5245e3b5b6775682add405ccda5e7b08ffc9c10ea62f537ddd6a52f0ae1f0a39ab8aa58359d7dc3b8b4bedf17cbdc281cfe

Download Submit
C:\Users\Admin\AppData\Roaming\Net\pcichek.dll

Filesize
14KB

MD5
3aabcd7c81425b3b9327a2bf643251c6

SHA1
ea841199baa7307280fc9e4688ac75e5624f2181

SHA256
0cff893b1e7716d09fb74b7a0313b78a09f3f48c586d31fc5f830bd72ce8331f

SHA512
97605b07be34948541462000345f1e8f9a9134d139448d4f331cefeeca6dad51c025fcab09d182b86e5a4a8e2f9412b3745ec86b514b0523497c821cb6b8c592

Download Submit
\Users\Admin\AppData\Roaming\Net\PCICL32.DLL

Filesize
3.3MB

MD5
e7b92529ea10176fe35ba73fa4edef74

SHA1
fc5b325d433cde797f6ad0d8b1305d6fb16d4e34

SHA256
b6d4ad0231941e0637485ac5833e0fdc75db35289b54e70f3858b70d36d04c80

SHA512
fb3a70e87772c1fb386ad8def6c7bdf325b8d525355d4386102649eb2d61f09ce101fce37ccc1f44d5878e604e2e426d96618e836367ab460cae01f627833517

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

Filesize
755KB

MD5
0e37fbfa79d349d672456923ec5fbbe3

SHA1
4e880fc7625ccf8d9ca799d5b94ce2b1e7597335

SHA256
8793353461826fbd48f25ea8b835be204b758ce7510db2af631b28850355bd18

SHA512
2bea9bd528513a3c6a54beac25096ee200a4e6ccfc2a308ae9cfd1ad8738e2e2defd477d59db527a048e5e9a4fe1fc1d771701de14ef82b4dbcdc90df0387630

Download Submit
memory/612-31-0x00007FFA76483000-0x00007FFA76484000-memory.dmp

Filesize
4KB

Download
memory/612-32-0x00007FFA76480000-0x00007FFA76E6C000-memory.dmp

Filesize
9.9MB

Download
memory/612-30-0x00007FFA76480000-0x00007FFA76E6C000-memory.dmp

Filesize
9.9MB

Download
memory/612-10-0x00007FFA76480000-0x00007FFA76E6C000-memory.dmp

Filesize
9.9MB

Download
memory/612-0-0x00007FFA76483000-0x00007FFA76484000-memory.dmp

Filesize
4KB

Download
memory/612-119-0x0000021C9CDB0000-0x0000021C9CF72000-memory.dmp

Filesize
1.8MB

Download
memory/612-9-0x0000021C9B8B0000-0x0000021C9B926000-memory.dmp

Filesize
472KB

Download
memory/612-6-0x00007FFA76480000-0x00007FFA76E6C000-memory.dmp

Filesize
9.9MB

Download
memory/612-5-0x0000021C9B780000-0x0000021C9B7A2000-memory.dmp

Filesize
136KB

Download
memory/612-135-0x00007FFA76480000-0x00007FFA76E6C000-memory.dmp

Filesize
9.9MB

Download