systembc | 42eb6fcf205d9b6e03bf2ee53945825f5b43fc97d517d145df6e08904e3aebac

Analysis

max time kernel
99s
max time network
30s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
29-01-2023 18:24

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

42eb6fcf205d9b6e03bf2ee53945825f5b43fc97d517d145df6e08904e3aebac.exe
Size

122KB
MD5

5f866e1c597b23ae2df3f60545b36888
SHA1

864d6aa509ca82f4a0bc832a24f629fcaf432f73
SHA256

42eb6fcf205d9b6e03bf2ee53945825f5b43fc97d517d145df6e08904e3aebac
SHA512

59f132b74135742bf7b5ba7a065090762e685b78890a623adc99849a2e115b3555069f6f196bcebc5fa73f2bbd2509e4b7a108210b37b280f42fc384ad16524b
SSDEEP

3072:d98eW81vrk4AZuZoJ7irczoZp9mp8YD2n+h3Z:A0RrkXZuA7ircEZp9mp8YD2ng

Score

10^/10

systembc trojan upx

Malware Config

Extracted

Family

systembc

185.197.74.227:4053

Signatures

SystemBC
SystemBC is a proxy and remote administration tool first seen in 2019.
trojan systembc
Executes dropped EXE 2 IoCs

Processes:

tnvfj.exetnvfj.exe

pid process

544 tnvfj.exe
872 tnvfj.exe

pid	process
544	tnvfj.exe
872	tnvfj.exe

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
C:\ProgramData\hqsq\tnvfj.exe	upx
C:\ProgramData\hqsq\tnvfj.exe	upx
C:\ProgramData\hqsq\tnvfj.exe	upx

Drops file in Windows directory 2 IoCs

Processes:

42eb6fcf205d9b6e03bf2ee53945825f5b43fc97d517d145df6e08904e3aebac.exe

description	ioc	process
File created	C:\Windows\Tasks\corolina17.job	42eb6fcf205d9b6e03bf2ee53945825f5b43fc97d517d145df6e08904e3aebac.exe
File opened for modification	C:\Windows\Tasks\corolina17.job	42eb6fcf205d9b6e03bf2ee53945825f5b43fc97d517d145df6e08904e3aebac.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

42eb6fcf205d9b6e03bf2ee53945825f5b43fc97d517d145df6e08904e3aebac.exe

pid process

948 42eb6fcf205d9b6e03bf2ee53945825f5b43fc97d517d145df6e08904e3aebac.exe

pid	process
948	42eb6fcf205d9b6e03bf2ee53945825f5b43fc97d517d145df6e08904e3aebac.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

taskeng.exe

description	pid	process	target process
PID 1492 wrote to memory of 544	1492	taskeng.exe	tnvfj.exe
PID 1492 wrote to memory of 544	1492	taskeng.exe	tnvfj.exe
PID 1492 wrote to memory of 544	1492	taskeng.exe	tnvfj.exe
PID 1492 wrote to memory of 544	1492	taskeng.exe	tnvfj.exe
PID 1492 wrote to memory of 872	1492	taskeng.exe	tnvfj.exe
PID 1492 wrote to memory of 872	1492	taskeng.exe	tnvfj.exe
PID 1492 wrote to memory of 872	1492	taskeng.exe	tnvfj.exe
PID 1492 wrote to memory of 872	1492	taskeng.exe	tnvfj.exe

C:\Users\Admin\AppData\Local\Temp\42eb6fcf205d9b6e03bf2ee53945825f5b43fc97d517d145df6e08904e3aebac.exe
"C:\Users\Admin\AppData\Local\Temp\42eb6fcf205d9b6e03bf2ee53945825f5b43fc97d517d145df6e08904e3aebac.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:948

C:\Windows\system32\taskeng.exe
taskeng.exe {5759CD0B-F06C-451C-909E-506BDB339C02} S-1-5-21-3406023954-474543476-3319432036-1000:VUIIVLGQ\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1492

C:\ProgramData\hqsq\tnvfj.exe
C:\ProgramData\hqsq\tnvfj.exe start2
2⤵
- Executes dropped EXE
PID:544

C:\ProgramData\hqsq\tnvfj.exe
C:\ProgramData\hqsq\tnvfj.exe start2
2⤵
- Executes dropped EXE
PID:872

MITRE ATT&CK Matrix

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\hqsq\tnvfj.exe
Filesize
122KB

MD5
5f866e1c597b23ae2df3f60545b36888

SHA1
864d6aa509ca82f4a0bc832a24f629fcaf432f73

SHA256
42eb6fcf205d9b6e03bf2ee53945825f5b43fc97d517d145df6e08904e3aebac

SHA512
59f132b74135742bf7b5ba7a065090762e685b78890a623adc99849a2e115b3555069f6f196bcebc5fa73f2bbd2509e4b7a108210b37b280f42fc384ad16524b

Download Submit
C:\ProgramData\hqsq\tnvfj.exe
Filesize
122KB

MD5
5f866e1c597b23ae2df3f60545b36888

SHA1
864d6aa509ca82f4a0bc832a24f629fcaf432f73

SHA256
42eb6fcf205d9b6e03bf2ee53945825f5b43fc97d517d145df6e08904e3aebac

SHA512
59f132b74135742bf7b5ba7a065090762e685b78890a623adc99849a2e115b3555069f6f196bcebc5fa73f2bbd2509e4b7a108210b37b280f42fc384ad16524b

Download Submit
C:\ProgramData\hqsq\tnvfj.exe
Filesize
122KB

MD5
5f866e1c597b23ae2df3f60545b36888

SHA1
864d6aa509ca82f4a0bc832a24f629fcaf432f73

SHA256
42eb6fcf205d9b6e03bf2ee53945825f5b43fc97d517d145df6e08904e3aebac

SHA512
59f132b74135742bf7b5ba7a065090762e685b78890a623adc99849a2e115b3555069f6f196bcebc5fa73f2bbd2509e4b7a108210b37b280f42fc384ad16524b

Download Submit
memory/544-64-0x00000000002B3000-0x00000000002B6000-memory.dmp

Filesize
12KB

Download
memory/544-59-0x0000000000000000-mapping.dmp

Download
memory/544-62-0x00000000002B3000-0x00000000002B6000-memory.dmp

Filesize
12KB

Download
memory/544-63-0x0000000000400000-0x0000000000A43000-memory.dmp

Filesize
6.3MB

Download
memory/872-65-0x0000000000000000-mapping.dmp

Download
memory/872-68-0x0000000000BF3000-0x0000000000BF6000-memory.dmp

Filesize
12KB

Download
memory/872-69-0x0000000000400000-0x0000000000A43000-memory.dmp

Filesize
6.3MB

Download
memory/872-70-0x0000000000BF3000-0x0000000000BF6000-memory.dmp

Filesize
12KB

Download
memory/948-57-0x0000000000292000-0x0000000000296000-memory.dmp

Filesize
16KB

Download
memory/948-56-0x0000000000400000-0x0000000000A43000-memory.dmp

Filesize
6.3MB

Download
memory/948-54-0x0000000075A31000-0x0000000075A33000-memory.dmp

Filesize
8KB

Download
memory/948-55-0x0000000000292000-0x0000000000296000-memory.dmp

Filesize
16KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix

Replay Monitor

Loading Replay Monitor...

Downloads