systembc | 4246b1740af95e953c8010a6d99c0ab72622b892bc1dbb955eec4067d90d7763

Analysis

max time kernel
142s
max time network
116s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
15/04/2023, 08:51

Target
tmp.exe
Size 283KB
Sample230415-kr93cade95
SHA256 4246b1740af95e953c8010a6d99c0ab72622b892bc1dbb955eec4067d90d7763
MD5 373949447dfd88ce94f0d04cba6ea505
SHA1 b30b0268fa57ca3117957f99fa7372b244153306
SHA512 dfcdbf640ac89ae4c9efba10fe8260a4fa8354d1fd6d62f6625d0bec192dd21bb238d770d00c35a2b62d46d84f8445ffb415dd48a93023d70bac453bc50c8c88
SSDEEP 6144:J/y8+suv+onz8G+pqHxq8FNyMRn7HRGcdfMtVqgo:J/yZsvoz8G+QRq8fhN7y78
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

systembc trojan

Family

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

Drops file in Windows directory 2 IoCs

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

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1500 wrote to memory of 1088	1500	taskeng.exe	28
PID 1500 wrote to memory of 1088	1500	taskeng.exe	28
PID 1500 wrote to memory of 1088	1500	taskeng.exe	28
PID 1500 wrote to memory of 1088	1500	taskeng.exe	28

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
1⤵
- Drops file in Windows directory
PID:820

C:\Windows\system32\taskeng.exe
taskeng.exe {B8EEA0DA-3866-47D1-AD3F-000910D46EB6} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:1500
- C:\Users\Admin\AppData\Local\Temp\tmp.exe
  C:\Users\Admin\AppData\Local\Temp\tmp.exe start
  2⤵
  PID:1088

memory/820-57-0x00000000003A0000-0x00000000003A5000-memory.dmp

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memory/820-58-0x0000000000400000-0x0000000000B3A000-memory.dmp

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memory/1088-66-0x0000000000400000-0x0000000000B3A000-memory.dmp

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