netsupport | bf81ccb4452131d4b14953bd9848937647f1259d7c8e7b9083db93de278c4b54

Analysis

max time kernel
31s
max time network
139s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
25-03-2023 18:01

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General

Target

BF81CCB4452131D4B14953BD9848937647F1259D7C8E7.exe
Size

2.8MB
MD5

4025b57f8a01ba6aea3896f7825602d6
SHA1

cea9dfe2975297258f964dc1852faa1e2ae014e8
SHA256

bf81ccb4452131d4b14953bd9848937647f1259d7c8e7b9083db93de278c4b54
SHA512

85e2698b289c522111a7a8f141e0109a11005bc03b3fcf09162561bcb1221398eaa4800533529a91139877c111d0bfb2cfc3136e7525d28c243753c86cc23cca
SSDEEP

49152:vL3zTcI+5heQHcUrP4w1HK9mGWNw4FtIelqY/lt3JvU/BkQhKIAYYq:vXTB4eQHDrP4U7N3L/lt3JvvsAYY

Score

10^/10

netsupport rat

Malware Config

Signatures

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

Drops startup file 1 IoCs

Processes:

BF81CCB4452131D4B14953BD9848937647F1259D7C8E7.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\autorunings.ini.lnk	BF81CCB4452131D4B14953BD9848937647F1259D7C8E7.exe

Executes dropped EXE 1 IoCs

Processes:

client32.exe

pid process

1192 client32.exe

pid	process
1192	client32.exe

Loads dropped DLL 10 IoCs

Processes:

BF81CCB4452131D4B14953BD9848937647F1259D7C8E7.execlient32.exe

pid	process
1320	BF81CCB4452131D4B14953BD9848937647F1259D7C8E7.exe
1320	BF81CCB4452131D4B14953BD9848937647F1259D7C8E7.exe
1320	BF81CCB4452131D4B14953BD9848937647F1259D7C8E7.exe
1320	BF81CCB4452131D4B14953BD9848937647F1259D7C8E7.exe
1320	BF81CCB4452131D4B14953BD9848937647F1259D7C8E7.exe
1192	client32.exe
1192	client32.exe
1192	client32.exe
1192	client32.exe
1192	client32.exe

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

System Information Discovery
T1082
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

client32.exe

description pid process

Token: SeSecurityPrivilege 1192 client32.exe
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

client32.exe

pid process

1192 client32.exe

description	pid	process
Token: SeSecurityPrivilege	1192	client32.exe

pid	process
1192	client32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

BF81CCB4452131D4B14953BD9848937647F1259D7C8E7.exe

description	pid	process	target process
PID 1320 wrote to memory of 1192	1320	BF81CCB4452131D4B14953BD9848937647F1259D7C8E7.exe	client32.exe
PID 1320 wrote to memory of 1192	1320	BF81CCB4452131D4B14953BD9848937647F1259D7C8E7.exe	client32.exe
PID 1320 wrote to memory of 1192	1320	BF81CCB4452131D4B14953BD9848937647F1259D7C8E7.exe	client32.exe
PID 1320 wrote to memory of 1192	1320	BF81CCB4452131D4B14953BD9848937647F1259D7C8E7.exe	client32.exe
PID 1320 wrote to memory of 1192	1320	BF81CCB4452131D4B14953BD9848937647F1259D7C8E7.exe	client32.exe
PID 1320 wrote to memory of 1192	1320	BF81CCB4452131D4B14953BD9848937647F1259D7C8E7.exe	client32.exe
PID 1320 wrote to memory of 1192	1320	BF81CCB4452131D4B14953BD9848937647F1259D7C8E7.exe	client32.exe

C:\Users\Admin\AppData\Local\Temp\BF81CCB4452131D4B14953BD9848937647F1259D7C8E7.exe
"C:\Users\Admin\AppData\Local\Temp\BF81CCB4452131D4B14953BD9848937647F1259D7C8E7.exe"
1⤵
- Drops startup file
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1320

C:\Users\Admin\AppData\Roaming\windows_update_318643\client32.exe
"C:\Users\Admin\AppData\Roaming\windows_update_318643\client32.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:1192

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

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:\Users\Admin\AppData\Roaming\windows_update_318643\HTCTL32.DLL
Filesize
320KB

MD5
c94005d2dcd2a54e40510344e0bb9435

SHA1
55b4a1620c5d0113811242c20bd9870a1e31d542

SHA256
3c072532bf7674d0c5154d4d22a9d9c0173530c0d00f69911cdbc2552175d899

SHA512
2e6f673864a54b1dcad9532ef9b18a9c45c0844f1f53e699fade2f41e43fa5cbc9b8e45e6f37b95f84cf6935a96fba2950ee3e0e9542809fd288fefba34ddd6a

Download Submit
C:\Users\Admin\AppData\Roaming\windows_update_318643\MSVCR100.dll
Filesize
755KB

MD5
0e37fbfa79d349d672456923ec5fbbe3

SHA1
4e880fc7625ccf8d9ca799d5b94ce2b1e7597335

SHA256
8793353461826fbd48f25ea8b835be204b758ce7510db2af631b28850355bd18

SHA512
2bea9bd528513a3c6a54beac25096ee200a4e6ccfc2a308ae9cfd1ad8738e2e2defd477d59db527a048e5e9a4fe1fc1d771701de14ef82b4dbcdc90df0387630

Download Submit
C:\Users\Admin\AppData\Roaming\windows_update_318643\NSM.LIC
Filesize
258B

MD5
f9ee51cedb764fbcba21cc7300eb76b1

SHA1
6161714a57270e02155d3630be85371a2779ceb6

SHA256
dccf82270fecb485bcea819761e45cb09dac1da846a86cdbb27513c3d6b2fca0

SHA512
b81d7a3432fda25fa30a766bfb211d928ae21c3c77996d01527cfd60e438e6e88bcb64ff357fd0713d9116744262113bf9537583aa124bb43fd584c5df6fd344

Download Submit
C:\Users\Admin\AppData\Roaming\windows_update_318643\PCICL32.dll
Filesize
3.6MB

MD5
d3d39180e85700f72aaae25e40c125ff

SHA1
f3404ef6322f5c6e7862b507d05b8f4b7f1c7d15

SHA256
38684adb2183bf320eb308a96cdbde8d1d56740166c3e2596161f42a40fa32d5

SHA512
471ac150e93a182d135e5483d6b1492f08a49f5ccab420732b87210f2188be1577ceaaee4ce162a7acceff5c17cdd08dc51b1904228275f6bbde18022ec79d2f

Download Submit
C:\Users\Admin\AppData\Roaming\windows_update_318643\client32.exe
Filesize
101KB

MD5
c4f1b50e3111d29774f7525039ff7086

SHA1
57539c95cba0986ec8df0fcdea433e7c71b724c6

SHA256
18df68d1581c11130c139fa52abb74dfd098a9af698a250645d6a4a65efcbf2d

SHA512
005db65cedaaccc85525fb3cdab090054bb0bb9cc8c37f8210ec060f490c64945a682b5dd5d00a68ac2b8c58894b6e7d938acaa1130c1cc5667e206d38b942c5

Download Submit
C:\Users\Admin\AppData\Roaming\windows_update_318643\client32.exe
Filesize
101KB

MD5
c4f1b50e3111d29774f7525039ff7086

SHA1
57539c95cba0986ec8df0fcdea433e7c71b724c6

SHA256
18df68d1581c11130c139fa52abb74dfd098a9af698a250645d6a4a65efcbf2d

SHA512
005db65cedaaccc85525fb3cdab090054bb0bb9cc8c37f8210ec060f490c64945a682b5dd5d00a68ac2b8c58894b6e7d938acaa1130c1cc5667e206d38b942c5

Download Submit
C:\Users\Admin\AppData\Roaming\windows_update_318643\client32.ini
Filesize
918B

MD5
20b38e27ca9720d69b204b8ff46b03c4

SHA1
3ed5bcdbbb62740b78e01e1324019ea322a5645a

SHA256
65e49fcdaf349d4237596cbf6c080fa4fa7eb8b1be1867556e6a6f37fcf1961c

SHA512
1c128940eff25b84ee8d5089f103abf5d05ef1820947701d3ea1799bfa9f234f265fdbcc12aed94156195a8555f315d071eb6421a94d9b5670d75c1a61500177

Download Submit
C:\Users\Admin\AppData\Roaming\windows_update_318643\pcicapi.dll
Filesize
32KB

MD5
34dfb87e4200d852d1fb45dc48f93cfc

SHA1
35b4e73fb7c8d4c3fefb90b7e7dc19f3e653c641

SHA256
2d6c6200508c0797e6542b195c999f3485c4ef76551aa3c65016587788ba1703

SHA512
f5bb4e700322cbaa5069244812a9b6ce6899ce15b4fd6384a3e8be421e409e4526b2f67fe210394cd47c4685861faf760eff9af77209100b82b2e0655581c9b2

Download Submit
C:\Users\Admin\AppData\Roaming\windows_update_318643\pcichek.dll
Filesize
18KB

MD5
104b30fef04433a2d2fd1d5f99f179fe

SHA1
ecb08e224a2f2772d1e53675bedc4b2c50485a41

SHA256
956b9fa960f913cce3137089c601f3c64cc24c54614b02bba62abb9610a985dd

SHA512
5efcaa8c58813c3a0a6026cd7f3b34ad4fb043fd2d458db2e914429be2b819f1ac74e2d35e4439601cf0cb50fcdcafdcf868da328eaaeec15b0a4a6b8b2c218f

Download Submit
\Users\Admin\AppData\Roaming\windows_update_318643\HTCTL32.DLL
Filesize
320KB

MD5
c94005d2dcd2a54e40510344e0bb9435

SHA1
55b4a1620c5d0113811242c20bd9870a1e31d542

SHA256
3c072532bf7674d0c5154d4d22a9d9c0173530c0d00f69911cdbc2552175d899

SHA512
2e6f673864a54b1dcad9532ef9b18a9c45c0844f1f53e699fade2f41e43fa5cbc9b8e45e6f37b95f84cf6935a96fba2950ee3e0e9542809fd288fefba34ddd6a

Download Submit
\Users\Admin\AppData\Roaming\windows_update_318643\PCICHEK.DLL
Filesize
18KB

MD5
104b30fef04433a2d2fd1d5f99f179fe

SHA1
ecb08e224a2f2772d1e53675bedc4b2c50485a41

SHA256
956b9fa960f913cce3137089c601f3c64cc24c54614b02bba62abb9610a985dd

SHA512
5efcaa8c58813c3a0a6026cd7f3b34ad4fb043fd2d458db2e914429be2b819f1ac74e2d35e4439601cf0cb50fcdcafdcf868da328eaaeec15b0a4a6b8b2c218f

Download Submit
\Users\Admin\AppData\Roaming\windows_update_318643\PCICL32.DLL
Filesize
3.6MB

MD5
d3d39180e85700f72aaae25e40c125ff

SHA1
f3404ef6322f5c6e7862b507d05b8f4b7f1c7d15

SHA256
38684adb2183bf320eb308a96cdbde8d1d56740166c3e2596161f42a40fa32d5

SHA512
471ac150e93a182d135e5483d6b1492f08a49f5ccab420732b87210f2188be1577ceaaee4ce162a7acceff5c17cdd08dc51b1904228275f6bbde18022ec79d2f

Download Submit
\Users\Admin\AppData\Roaming\windows_update_318643\client32.exe
Filesize
101KB

MD5
c4f1b50e3111d29774f7525039ff7086

SHA1
57539c95cba0986ec8df0fcdea433e7c71b724c6

SHA256
18df68d1581c11130c139fa52abb74dfd098a9af698a250645d6a4a65efcbf2d

SHA512
005db65cedaaccc85525fb3cdab090054bb0bb9cc8c37f8210ec060f490c64945a682b5dd5d00a68ac2b8c58894b6e7d938acaa1130c1cc5667e206d38b942c5

Download Submit
\Users\Admin\AppData\Roaming\windows_update_318643\client32.exe
Filesize
101KB

MD5
c4f1b50e3111d29774f7525039ff7086

SHA1
57539c95cba0986ec8df0fcdea433e7c71b724c6

SHA256
18df68d1581c11130c139fa52abb74dfd098a9af698a250645d6a4a65efcbf2d

SHA512
005db65cedaaccc85525fb3cdab090054bb0bb9cc8c37f8210ec060f490c64945a682b5dd5d00a68ac2b8c58894b6e7d938acaa1130c1cc5667e206d38b942c5

Download Submit
\Users\Admin\AppData\Roaming\windows_update_318643\client32.exe
Filesize
101KB

MD5
c4f1b50e3111d29774f7525039ff7086

SHA1
57539c95cba0986ec8df0fcdea433e7c71b724c6

SHA256
18df68d1581c11130c139fa52abb74dfd098a9af698a250645d6a4a65efcbf2d

SHA512
005db65cedaaccc85525fb3cdab090054bb0bb9cc8c37f8210ec060f490c64945a682b5dd5d00a68ac2b8c58894b6e7d938acaa1130c1cc5667e206d38b942c5

Download Submit
\Users\Admin\AppData\Roaming\windows_update_318643\client32.exe
Filesize
101KB

MD5
c4f1b50e3111d29774f7525039ff7086

SHA1
57539c95cba0986ec8df0fcdea433e7c71b724c6

SHA256
18df68d1581c11130c139fa52abb74dfd098a9af698a250645d6a4a65efcbf2d

SHA512
005db65cedaaccc85525fb3cdab090054bb0bb9cc8c37f8210ec060f490c64945a682b5dd5d00a68ac2b8c58894b6e7d938acaa1130c1cc5667e206d38b942c5

Download Submit
\Users\Admin\AppData\Roaming\windows_update_318643\client32.exe
Filesize
101KB

MD5
c4f1b50e3111d29774f7525039ff7086

SHA1
57539c95cba0986ec8df0fcdea433e7c71b724c6

SHA256
18df68d1581c11130c139fa52abb74dfd098a9af698a250645d6a4a65efcbf2d

SHA512
005db65cedaaccc85525fb3cdab090054bb0bb9cc8c37f8210ec060f490c64945a682b5dd5d00a68ac2b8c58894b6e7d938acaa1130c1cc5667e206d38b942c5

Download Submit
\Users\Admin\AppData\Roaming\windows_update_318643\msvcr100.dll
Filesize
755KB

MD5
0e37fbfa79d349d672456923ec5fbbe3

SHA1
4e880fc7625ccf8d9ca799d5b94ce2b1e7597335

SHA256
8793353461826fbd48f25ea8b835be204b758ce7510db2af631b28850355bd18

SHA512
2bea9bd528513a3c6a54beac25096ee200a4e6ccfc2a308ae9cfd1ad8738e2e2defd477d59db527a048e5e9a4fe1fc1d771701de14ef82b4dbcdc90df0387630

Download Submit
\Users\Admin\AppData\Roaming\windows_update_318643\pcicapi.dll
Filesize
32KB

MD5
34dfb87e4200d852d1fb45dc48f93cfc

SHA1
35b4e73fb7c8d4c3fefb90b7e7dc19f3e653c641

SHA256
2d6c6200508c0797e6542b195c999f3485c4ef76551aa3c65016587788ba1703

SHA512
f5bb4e700322cbaa5069244812a9b6ce6899ce15b4fd6384a3e8be421e409e4526b2f67fe210394cd47c4685861faf760eff9af77209100b82b2e0655581c9b2

Download Submit