systembc | bff34ec881bbe9726f025fcf4585150e98178bd2ecdbc7fc29939dbf554ab708

Analysis

max time kernel
139s
max time network
135s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
25-01-2023 20:29

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General

Target

d49997877451b110adc8e09d9c04c2b6.exe
Size

1.7MB
MD5

d49997877451b110adc8e09d9c04c2b6
SHA1

602504addbd4df06c2ae5467a037edbf4fc41c16
SHA256

bff34ec881bbe9726f025fcf4585150e98178bd2ecdbc7fc29939dbf554ab708
SHA512

7e4e0acecf1b00234fb08c1441b6917cc3c65d4f9b27f369812ff0a719aee4dbae995d00b36ab7eaf97e09f8be27b54c0ec5a80043c3dd4b2340824d5c850664
SSDEEP

49152:Zk7edbYPPeMgp1wQ4H4/Kof7Of6Dmq9zbrQn:Z/dMPPEYQlNqfVUQn

Score

10^/10

systembc trojan

Malware Config

Extracted

Family

systembc

89.22.225.242:4193

195.2.93.22:4193

Signatures

SystemBC
SystemBC is a proxy and remote administration tool first seen in 2019.
trojan systembc

Drops file in System32 directory 1 IoCs

Processes:

d49997877451b110adc8e09d9c04c2b6.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	d49997877451b110adc8e09d9c04c2b6.exe

Drops file in Windows directory 2 IoCs

Processes:

d49997877451b110adc8e09d9c04c2b6.exe

description	ioc	process
File created	C:\Windows\Tasks\wow64.job	d49997877451b110adc8e09d9c04c2b6.exe
File opened for modification	C:\Windows\Tasks\wow64.job	d49997877451b110adc8e09d9c04c2b6.exe

Modifies data under HKEY_USERS 1 IoCs

Processes:

d49997877451b110adc8e09d9c04c2b6.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	d49997877451b110adc8e09d9c04c2b6.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

Processes:

d49997877451b110adc8e09d9c04c2b6.exed49997877451b110adc8e09d9c04c2b6.exe

pid	process
1884	d49997877451b110adc8e09d9c04c2b6.exe
1884	d49997877451b110adc8e09d9c04c2b6.exe
1884	d49997877451b110adc8e09d9c04c2b6.exe
1884	d49997877451b110adc8e09d9c04c2b6.exe
1884	d49997877451b110adc8e09d9c04c2b6.exe
1936	d49997877451b110adc8e09d9c04c2b6.exe
1936	d49997877451b110adc8e09d9c04c2b6.exe
1936	d49997877451b110adc8e09d9c04c2b6.exe
1936	d49997877451b110adc8e09d9c04c2b6.exe
1936	d49997877451b110adc8e09d9c04c2b6.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

taskeng.exe

description	pid	process	target process
PID 2028 wrote to memory of 1936	2028	taskeng.exe	d49997877451b110adc8e09d9c04c2b6.exe
PID 2028 wrote to memory of 1936	2028	taskeng.exe	d49997877451b110adc8e09d9c04c2b6.exe
PID 2028 wrote to memory of 1936	2028	taskeng.exe	d49997877451b110adc8e09d9c04c2b6.exe
PID 2028 wrote to memory of 1936	2028	taskeng.exe	d49997877451b110adc8e09d9c04c2b6.exe

C:\Users\Admin\AppData\Local\Temp\d49997877451b110adc8e09d9c04c2b6.exe
"C:\Users\Admin\AppData\Local\Temp\d49997877451b110adc8e09d9c04c2b6.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:1884

C:\Windows\system32\taskeng.exe
taskeng.exe {DAAB5A7F-41D5-40EE-8C99-ADFCB0002733} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:2028

C:\Users\Admin\AppData\Local\Temp\d49997877451b110adc8e09d9c04c2b6.exe
C:\Users\Admin\AppData\Local\Temp\d49997877451b110adc8e09d9c04c2b6.exe start
2⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
PID:1936

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/1884-71-0x000000000B0B0000-0x000000000B130000-memory.dmp

Filesize
512KB

Download
memory/1884-55-0x0000000002090000-0x0000000002937000-memory.dmp

Filesize
8.7MB

Download
memory/1884-56-0x0000000002090000-0x0000000002937000-memory.dmp

Filesize
8.7MB

Download
memory/1884-57-0x0000000001E90000-0x0000000001FFD000-memory.dmp

Filesize
1.4MB

Download
memory/1884-58-0x0000000001E90000-0x0000000001FFD000-memory.dmp

Filesize
1.4MB

Download
memory/1884-59-0x0000000002090000-0x0000000002937000-memory.dmp

Filesize
8.7MB

Download
memory/1884-60-0x0000000001E90000-0x0000000001FFD000-memory.dmp

Filesize
1.4MB

Download
memory/1884-61-0x000000000B0B0000-0x000000000B130000-memory.dmp

Filesize
512KB

Download
memory/1884-62-0x0000000000610000-0x0000000000617000-memory.dmp

Filesize
28KB

Download
memory/1884-78-0x0000000001E90000-0x0000000001FFD000-memory.dmp

Filesize
1.4MB

Download
memory/1884-54-0x0000000075E31000-0x0000000075E33000-memory.dmp

Filesize
8KB

Download
memory/1936-67-0x0000000000B70000-0x0000000001417000-memory.dmp

Filesize
8.7MB

Download
memory/1936-69-0x0000000001420000-0x000000000158D000-memory.dmp

Filesize
1.4MB

Download
memory/1936-70-0x0000000001420000-0x000000000158D000-memory.dmp

Filesize
1.4MB

Download
memory/1936-68-0x0000000000B70000-0x0000000001417000-memory.dmp

Filesize
8.7MB

Download
memory/1936-72-0x0000000000B70000-0x0000000001417000-memory.dmp

Filesize
8.7MB

Download
memory/1936-73-0x0000000001420000-0x000000000158D000-memory.dmp

Filesize
1.4MB

Download
memory/1936-74-0x000000000DB90000-0x000000000DC10000-memory.dmp

Filesize
512KB

Download
memory/1936-75-0x0000000000330000-0x0000000000337000-memory.dmp

Filesize
28KB

Download
memory/1936-65-0x0000000000000000-mapping.dmp

Download
memory/1936-79-0x000000000DB90000-0x000000000DC10000-memory.dmp

Filesize
512KB

Download