Malware Analysis Report

2025-06-15 21:58

Sample ID 221108-wgs7macchq
Target a8bf7dbcfe29c3c9c0bed1be3cd9cc2935e2bf60313c5721e37fbad5048f67c6
SHA256 a8bf7dbcfe29c3c9c0bed1be3cd9cc2935e2bf60313c5721e37fbad5048f67c6
Tags
systembc trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

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

a8bf7dbcfe29c3c9c0bed1be3cd9cc2935e2bf60313c5721e37fbad5048f67c6

Threat Level: Known bad

The file a8bf7dbcfe29c3c9c0bed1be3cd9cc2935e2bf60313c5721e37fbad5048f67c6 was found to be: Known bad.

Malicious Activity Summary

systembc trojan

SystemBC

Executes dropped EXE

Drops file in System32 directory

Drops file in Windows directory

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2022-11-08 17:54

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-11-08 17:53

Reported

2022-11-09 23:02

Platform

win7-20220812-en

Max time kernel

157s

Max time network

46s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a8bf7dbcfe29c3c9c0bed1be3cd9cc2935e2bf60313c5721e37fbad5048f67c6.exe"

Signatures

SystemBC

trojan systembc

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\qgvtkr\nuiwtb.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\System32\CatRoot2\dberr.txt C:\Users\Admin\AppData\Local\Temp\a8bf7dbcfe29c3c9c0bed1be3cd9cc2935e2bf60313c5721e37fbad5048f67c6.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\Tasks\nuiwtb.job C:\Users\Admin\AppData\Local\Temp\a8bf7dbcfe29c3c9c0bed1be3cd9cc2935e2bf60313c5721e37fbad5048f67c6.exe N/A
File created C:\Windows\Tasks\nuiwtb.job C:\Users\Admin\AppData\Local\Temp\a8bf7dbcfe29c3c9c0bed1be3cd9cc2935e2bf60313c5721e37fbad5048f67c6.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\a8bf7dbcfe29c3c9c0bed1be3cd9cc2935e2bf60313c5721e37fbad5048f67c6.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1104 wrote to memory of 1704 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\qgvtkr\nuiwtb.exe
PID 1104 wrote to memory of 1704 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\qgvtkr\nuiwtb.exe
PID 1104 wrote to memory of 1704 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\qgvtkr\nuiwtb.exe
PID 1104 wrote to memory of 1704 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\qgvtkr\nuiwtb.exe

Processes

C:\Users\Admin\AppData\Local\Temp\a8bf7dbcfe29c3c9c0bed1be3cd9cc2935e2bf60313c5721e37fbad5048f67c6.exe

"C:\Users\Admin\AppData\Local\Temp\a8bf7dbcfe29c3c9c0bed1be3cd9cc2935e2bf60313c5721e37fbad5048f67c6.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {88809D1D-C630-4D2A-A40F-2A0909C1EEBE} S-1-5-21-3845472200-3839195424-595303356-1000:ZERMMMDR\Admin:Interactive:[1]

C:\ProgramData\qgvtkr\nuiwtb.exe

C:\ProgramData\qgvtkr\nuiwtb.exe start2

Network

N/A

Files

memory/972-54-0x0000000074AB1000-0x0000000074AB3000-memory.dmp

memory/972-55-0x0000000000400000-0x0000000000664000-memory.dmp

memory/972-56-0x0000000000330000-0x0000000000348000-memory.dmp

memory/972-57-0x0000000000400000-0x0000000000664000-memory.dmp

memory/972-58-0x0000000000330000-0x0000000000348000-memory.dmp

C:\ProgramData\qgvtkr\nuiwtb.exe

MD5 8cea9bc30046ce76a8d9d211206b9197
SHA1 408b79f4b244be9e288efe7185dc915aaf4a9cbc
SHA256 a8bf7dbcfe29c3c9c0bed1be3cd9cc2935e2bf60313c5721e37fbad5048f67c6
SHA512 95d2b4117ec60f1b0d1611e742da358d77e1488a66e5f87105bb0b1e71ba016e3e153769d51701a47bd8ca85ada38150ee50e7edfc77e1a352a867399d27dcae

C:\ProgramData\qgvtkr\nuiwtb.exe

MD5 8cea9bc30046ce76a8d9d211206b9197
SHA1 408b79f4b244be9e288efe7185dc915aaf4a9cbc
SHA256 a8bf7dbcfe29c3c9c0bed1be3cd9cc2935e2bf60313c5721e37fbad5048f67c6
SHA512 95d2b4117ec60f1b0d1611e742da358d77e1488a66e5f87105bb0b1e71ba016e3e153769d51701a47bd8ca85ada38150ee50e7edfc77e1a352a867399d27dcae

memory/1704-60-0x0000000000000000-mapping.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-11-08 17:53

Reported

2022-11-09 23:04

Platform

win10v2004-20220812-en

Max time kernel

232s

Max time network

240s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a8bf7dbcfe29c3c9c0bed1be3cd9cc2935e2bf60313c5721e37fbad5048f67c6.exe"

Signatures

SystemBC

trojan systembc

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\rilkusr\obkgcil.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\Tasks\obkgcil.job C:\Users\Admin\AppData\Local\Temp\a8bf7dbcfe29c3c9c0bed1be3cd9cc2935e2bf60313c5721e37fbad5048f67c6.exe N/A
File opened for modification C:\Windows\Tasks\obkgcil.job C:\Users\Admin\AppData\Local\Temp\a8bf7dbcfe29c3c9c0bed1be3cd9cc2935e2bf60313c5721e37fbad5048f67c6.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a8bf7dbcfe29c3c9c0bed1be3cd9cc2935e2bf60313c5721e37fbad5048f67c6.exe

"C:\Users\Admin\AppData\Local\Temp\a8bf7dbcfe29c3c9c0bed1be3cd9cc2935e2bf60313c5721e37fbad5048f67c6.exe"

C:\ProgramData\rilkusr\obkgcil.exe

C:\ProgramData\rilkusr\obkgcil.exe start2

Network

Country Destination Domain Proto
US 20.189.173.13:443 tcp
NL 95.101.78.82:80 tcp
NL 95.101.78.82:80 tcp
NL 104.80.225.205:443 tcp
US 209.197.3.8:80 tcp
US 8.8.8.8:53 96.108.152.52.in-addr.arpa udp
US 8.8.8.8:53 9.9.0.0.0.0.0.0.0.0.0.0.0.0.0.0.3.0.0.0.3.0.4.0.0.3.0.1.3.0.6.2.ip6.arpa udp

Files

memory/4488-133-0x0000000000400000-0x0000000000664000-memory.dmp

memory/4488-134-0x0000000002430000-0x0000000002448000-memory.dmp

memory/4488-135-0x0000000000400000-0x0000000000664000-memory.dmp

C:\ProgramData\rilkusr\obkgcil.exe

MD5 8cea9bc30046ce76a8d9d211206b9197
SHA1 408b79f4b244be9e288efe7185dc915aaf4a9cbc
SHA256 a8bf7dbcfe29c3c9c0bed1be3cd9cc2935e2bf60313c5721e37fbad5048f67c6
SHA512 95d2b4117ec60f1b0d1611e742da358d77e1488a66e5f87105bb0b1e71ba016e3e153769d51701a47bd8ca85ada38150ee50e7edfc77e1a352a867399d27dcae

memory/388-138-0x0000000000400000-0x0000000000664000-memory.dmp

C:\ProgramData\rilkusr\obkgcil.exe

MD5 8cea9bc30046ce76a8d9d211206b9197
SHA1 408b79f4b244be9e288efe7185dc915aaf4a9cbc
SHA256 a8bf7dbcfe29c3c9c0bed1be3cd9cc2935e2bf60313c5721e37fbad5048f67c6
SHA512 95d2b4117ec60f1b0d1611e742da358d77e1488a66e5f87105bb0b1e71ba016e3e153769d51701a47bd8ca85ada38150ee50e7edfc77e1a352a867399d27dcae

memory/388-139-0x0000000000950000-0x0000000000968000-memory.dmp

memory/388-140-0x0000000000400000-0x0000000000664000-memory.dmp

memory/388-141-0x0000000000950000-0x0000000000968000-memory.dmp