Malware Analysis Report

2024-11-30 23:25

Sample ID 230814-l86lxsbc99
Target tmp
SHA256 e7108827841a79e82b3ed9f3e54a628f380560c618e0a3769240c2eaec143e54
Tags
systembc trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

e7108827841a79e82b3ed9f3e54a628f380560c618e0a3769240c2eaec143e54

Threat Level: Known bad

The file tmp was found to be: Known bad.

Malicious Activity Summary

systembc trojan

Suspicious use of NtCreateUserProcessOtherParentProcess

SystemBC

Executes dropped EXE

Loads dropped DLL

Suspicious use of SetThreadContext

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-08-14 10:13

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-08-14 10:13

Reported

2023-08-14 10:15

Platform

win7-20230712-en

Max time kernel

144s

Max time network

147s

Command Line

"C:\Users\Admin\AppData\Local\Temp\tmp.exe"

Signatures

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\tmp.exe

"C:\Users\Admin\AppData\Local\Temp\tmp.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 mayo.edu udp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp
US 129.176.1.88:443 mayo.edu tcp

Files

memory/2568-54-0x0000000000400000-0x00000000007F2000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-08-14 10:13

Reported

2023-08-14 10:15

Platform

win10v2004-20230703-en

Max time kernel

141s

Max time network

153s

Command Line

C:\Windows\Explorer.EXE

Signatures

Suspicious use of NtCreateUserProcessOtherParentProcess

Description Indicator Process Target
PID 3448 created 3188 N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe C:\Windows\Explorer.EXE

SystemBC

trojan systembc

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\KBDINDEV\pdfreader.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\KBDINDEV\pdfreader.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 4372 set thread context of 2988 N/A C:\Users\Admin\AppData\Roaming\KBDINDEV\pdfreader.exe C:\Windows\SysWOW64\cmd.exe

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\tmp.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\KBDINDEV\pdfreader.exe N/A
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\KBDINDEV\pdfreader.exe N/A
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\KBDINDEV\pdfreader.exe N/A

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\tmp.exe

"C:\Users\Admin\AppData\Local\Temp\tmp.exe"

C:\Users\Admin\AppData\Roaming\KBDINDEV\pdfreader.exe

"C:\Users\Admin\AppData\Roaming\KBDINDEV\pdfreader.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\SysWOW64\cmd.exe"

C:\Windows\SysWOW64\explorer.exe

C:\Windows\SysWOW64\explorer.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 mayo.edu udp
US 129.176.1.88:443 mayo.edu tcp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 8.3.197.209.in-addr.arpa udp
US 8.8.8.8:53 www.mayo.edu udp
US 52.162.245.23:443 www.mayo.edu tcp
US 8.8.8.8:53 88.1.176.129.in-addr.arpa udp
US 8.8.8.8:53 23.245.162.52.in-addr.arpa udp
US 8.8.8.8:53 136.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 108.211.229.192.in-addr.arpa udp
US 8.8.8.8:53 udp
NL 199.232.148.193:443 i.imgur.com tcp
US 8.8.8.8:53 193.148.232.199.in-addr.arpa udp
US 8.8.8.8:53 2.136.104.51.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 7.173.189.20.in-addr.arpa udp

Files

memory/3448-134-0x00007FFAF2500000-0x00007FFAF282D000-memory.dmp

C:\Users\Admin\AppData\Roaming\KBDINDEV\pdfreader.exe

MD5 b43b96e4483dce09976dc250f87ecf1a
SHA1 4290076db1e87a46b73e8391186025f1f5b492bb
SHA256 5eaf95ad5163607ea220e439f13e58ae1bd9b408d94e06d5d721e8daca911c12
SHA512 383b723d2d547f775a661bf6990e834b0233849822c7cbc3f0aaf0f276b1c05b0f7bde754dae3da133f7a8aae669b31547889495e5370a6617c09a2a3b61c438

memory/3448-140-0x0000000000400000-0x00000000007F2000-memory.dmp

memory/4372-141-0x0000000002DD0000-0x0000000002DD1000-memory.dmp

C:\Users\Admin\AppData\Roaming\KBDINDEV\pdfium.dll

MD5 5253296effaf275e7239e52a6e3c76be
SHA1 3a07d2f3e83359d8998c7e11ee6e256e2cabdd7b
SHA256 bc7defe6891b955f977ae0d28036cea440e849209deeb9b58a693a11d359ee17
SHA512 669d549eba49e3d9fbaa1cf9775f5b4dc89784f336d14382389c1efb5a64b362bfea7a3e661bbdb816f5517acd66ebc0e8d3c9020f86b5a5dfc0774aa61a99f9

C:\Users\Admin\AppData\Roaming\KBDINDEV\pdfium.dll

MD5 5253296effaf275e7239e52a6e3c76be
SHA1 3a07d2f3e83359d8998c7e11ee6e256e2cabdd7b
SHA256 bc7defe6891b955f977ae0d28036cea440e849209deeb9b58a693a11d359ee17
SHA512 669d549eba49e3d9fbaa1cf9775f5b4dc89784f336d14382389c1efb5a64b362bfea7a3e661bbdb816f5517acd66ebc0e8d3c9020f86b5a5dfc0774aa61a99f9

C:\Users\Admin\AppData\Roaming\KBDINDEV\ail.html

MD5 5bb10ce2d154345099373f632594b49a
SHA1 bdb91eb50e5dd610d00a8a9c8aa69c91ed063015
SHA256 b7dba474ec7726fcbf7ee3acb24a8ee08e808b57e44bfb5d5a91d74f475cba1c
SHA512 cb5729643ceb6d51c66f555bcd6fbaefcfa74b3309bafd22daf5c7dbbb4bf1df49d5539001fe21b5c29421ed9d3b1b7dbd375fb3de710e375839cbf878d7ebef

memory/4372-145-0x0000000073800000-0x0000000074A54000-memory.dmp

memory/4372-146-0x0000000000400000-0x0000000000C88000-memory.dmp

memory/4372-147-0x0000000002DD0000-0x0000000002DD1000-memory.dmp

memory/2988-150-0x0000000073800000-0x0000000074A54000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\189e2914

MD5 61654e07b3102376adbc8597477d2e9a
SHA1 a682e2e399ec9f0b2574b8a17ec3cb1b67113ef2
SHA256 f4347fb82031dd9b039cd012d45062d756c8f7a3d1a9746861b000bfcba84847
SHA512 fbdebd1d48f469fab12672f419affc659823385a19764ea5112ceec16cdb081eb747d6e5297f1c71faa9130b734569e86b195864c020bd3ec71571d7403affc7

memory/2988-152-0x00007FFB028F0000-0x00007FFB02AE5000-memory.dmp

C:\Users\Admin\AppData\Roaming\KBDINDEV\pdfreader.exe

MD5 b43b96e4483dce09976dc250f87ecf1a
SHA1 4290076db1e87a46b73e8391186025f1f5b492bb
SHA256 5eaf95ad5163607ea220e439f13e58ae1bd9b408d94e06d5d721e8daca911c12
SHA512 383b723d2d547f775a661bf6990e834b0233849822c7cbc3f0aaf0f276b1c05b0f7bde754dae3da133f7a8aae669b31547889495e5370a6617c09a2a3b61c438

memory/2988-155-0x0000000073800000-0x0000000074A54000-memory.dmp

memory/2988-156-0x0000000073800000-0x0000000074A54000-memory.dmp

memory/2988-158-0x0000000073800000-0x0000000074A54000-memory.dmp

memory/4632-159-0x00000000007F0000-0x00000000007F8000-memory.dmp

memory/4632-160-0x00007FFB028F0000-0x00007FFB02AE5000-memory.dmp

memory/4632-161-0x00000000007F0000-0x00000000007F8000-memory.dmp

memory/4632-162-0x0000000000020000-0x0000000000453000-memory.dmp

memory/4632-163-0x00000000007F0000-0x00000000007F8000-memory.dmp

memory/4632-165-0x00000000007F0000-0x00000000007F8000-memory.dmp