systembc | e4eeae87c2a1322dcca0411cb644fc416d3423d9236b3a94408214315d2a6699

Analysis

max time kernel
295s
max time network
302s
platform
windows7_x64
resource
win7-20240319-en
resource tags

arch:x64arch:x86image:win7-20240319-enlocale:en-usos:windows7-x64system
submitted
16/04/2024, 10:48

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General

Target
e4eeae87c2a1322dcca0411cb644fc416d3423d9236b3a94408214315d2a6699.exe
Size 231KB
Sample240416-mv5cdage74
SHA256 e4eeae87c2a1322dcca0411cb644fc416d3423d9236b3a94408214315d2a6699
MD5 af6ec9ed07c5baa331323c30f874070a
SHA1 557507d8fe64a451c56c1daa4973944b3c4470fc
SHA512 d22727886e4532edb35aaaddd7de88d858028d9b4a0d13423934759c23f4a984e269e746a069682d23ed9f5cae575193df2c619465b699fd775152053c52defe
SSDEEP 1536:00Bcg8P5RRugGczhDKkfZ/6tZdiQtmuzbSC7axvUX0I5eT4XpN2B:06cWgn/6liqmuKpq5eT4P2B
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

systembc trojan

Malware Config

Extracted

Family

systembc

31.44.185.6:4001
31.44.185.11:4001

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
2960	fsoj.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\fsoj.job	e4eeae87c2a1322dcca0411cb644fc416d3423d9236b3a94408214315d2a6699.exe
File opened for modification	C:\Windows\Tasks\fsoj.job	e4eeae87c2a1322dcca0411cb644fc416d3423d9236b3a94408214315d2a6699.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
844	e4eeae87c2a1322dcca0411cb644fc416d3423d9236b3a94408214315d2a6699.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2484 wrote to memory of 2960	2484	taskeng.exe	29
PID 2484 wrote to memory of 2960	2484	taskeng.exe	29
PID 2484 wrote to memory of 2960	2484	taskeng.exe	29
PID 2484 wrote to memory of 2960	2484	taskeng.exe	29

C:\Users\Admin\AppData\Local\Temp\e4eeae87c2a1322dcca0411cb644fc416d3423d9236b3a94408214315d2a6699.exe
"C:\Users\Admin\AppData\Local\Temp\e4eeae87c2a1322dcca0411cb644fc416d3423d9236b3a94408214315d2a6699.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:844

C:\Windows\system32\taskeng.exe
taskeng.exe {9047069F-F55D-449D-A854-342A5218A936} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:2484
- C:\ProgramData\wbrmhdx\fsoj.exe
  C:\ProgramData\wbrmhdx\fsoj.exe start
  2⤵
  - Executes dropped EXE
  PID:2960

Network

MITRE ATT&CK Matrix

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Downloads

fsoj.exe

Path C:\ProgramData\wbrmhdx\fsoj.exe
Size 231KB
SHA256 e4eeae87c2a1322dcca0411cb644fc416d3423d9236b3a94408214315d2a6699
MD5 af6ec9ed07c5baa331323c30f874070a
SHA1 557507d8fe64a451c56c1daa4973944b3c4470fc
SHA512 d22727886e4532edb35aaaddd7de88d858028d9b4a0d13423934759c23f4a984e269e746a069682d23ed9f5cae575193df2c619465b699fd775152053c52defe
SSDEEP 1536:00Bcg8P5RRugGczhDKkfZ/6tZdiQtmuzbSC7axvUX0I5eT4XpN2B:06cWgn/6liqmuKpq5eT4P2B
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/844-1-0x0000000000510000-0x0000000000610000-memory.dmp

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memory/844-2-0x0000000000220000-0x0000000000229000-memory.dmp

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memory/844-3-0x0000000000400000-0x000000000046B000-memory.dmp

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memory/844-15-0x0000000000510000-0x0000000000610000-memory.dmp

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memory/2960-11-0x00000000008D0000-0x00000000009D0000-memory.dmp

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memory/2960-12-0x0000000000220000-0x0000000000229000-memory.dmp

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memory/2960-13-0x0000000000400000-0x000000000046B000-memory.dmp

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memory/2960-19-0x00000000008D0000-0x00000000009D0000-memory.dmp

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