systembc | 3f6c84150d51188f54330ce514518c879705052abad3f89325e9c279f1d9403e

Analysis

max time kernel
74s
max time network
99s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
18-12-2022 07:32

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General

Target

a533eeaaec1a873d84936633e153dd0a.exe
Size

327KB
MD5

a533eeaaec1a873d84936633e153dd0a
SHA1

a16f84c4039ddccf9960cee21cb8860f2f1cf34c
SHA256

3f6c84150d51188f54330ce514518c879705052abad3f89325e9c279f1d9403e
SHA512

c599ec24478794dbe3fd1f3124bb93423b610a5d36eb76d625a2401fcc5f368ee40bca9585ba156a06747c593bc415369ae2106ee48b94044a72a59bd1949b79
SSDEEP

6144:3YktL97wOl/cNqWoZAR5Lv2mXMcXQEjSbjfxur/tb:d57rl/ccJ4omxjSbjJurR

Score

10^/10

systembc trojan

Malware Config

Extracted

Family

systembc

109.205.214.18:443

Signatures

SystemBC
SystemBC is a proxy and remote administration tool first seen in 2019.
trojan systembc
Executes dropped EXE 1 IoCs

Processes:

mdtuu.exe

pid process

1936 mdtuu.exe

pid	process
1936	mdtuu.exe

Drops file in Windows directory 2 IoCs

Processes:

a533eeaaec1a873d84936633e153dd0a.exe

description	ioc	process
File created	C:\Windows\Tasks\mdtuu.job	a533eeaaec1a873d84936633e153dd0a.exe
File opened for modification	C:\Windows\Tasks\mdtuu.job	a533eeaaec1a873d84936633e153dd0a.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

a533eeaaec1a873d84936633e153dd0a.exe

pid process

1132 a533eeaaec1a873d84936633e153dd0a.exe

pid	process
1132	a533eeaaec1a873d84936633e153dd0a.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

taskeng.exe

description	pid	process	target process
PID 1972 wrote to memory of 1936	1972	taskeng.exe	mdtuu.exe
PID 1972 wrote to memory of 1936	1972	taskeng.exe	mdtuu.exe
PID 1972 wrote to memory of 1936	1972	taskeng.exe	mdtuu.exe
PID 1972 wrote to memory of 1936	1972	taskeng.exe	mdtuu.exe

C:\Users\Admin\AppData\Local\Temp\a533eeaaec1a873d84936633e153dd0a.exe
"C:\Users\Admin\AppData\Local\Temp\a533eeaaec1a873d84936633e153dd0a.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:1132

C:\Windows\system32\taskeng.exe
taskeng.exe {C6314DC9-671F-4E9C-AA5A-86015217C5F1} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:1972

C:\ProgramData\deaih\mdtuu.exe
C:\ProgramData\deaih\mdtuu.exe start
2⤵
- Executes dropped EXE
PID:1936

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

C:\ProgramData\deaih\mdtuu.exe

Filesize
327KB

MD5
a533eeaaec1a873d84936633e153dd0a

SHA1
a16f84c4039ddccf9960cee21cb8860f2f1cf34c

SHA256
3f6c84150d51188f54330ce514518c879705052abad3f89325e9c279f1d9403e

SHA512
c599ec24478794dbe3fd1f3124bb93423b610a5d36eb76d625a2401fcc5f368ee40bca9585ba156a06747c593bc415369ae2106ee48b94044a72a59bd1949b79

Download Submit
C:\ProgramData\deaih\mdtuu.exe

Filesize
327KB

MD5
a533eeaaec1a873d84936633e153dd0a

SHA1
a16f84c4039ddccf9960cee21cb8860f2f1cf34c

SHA256
3f6c84150d51188f54330ce514518c879705052abad3f89325e9c279f1d9403e

SHA512
c599ec24478794dbe3fd1f3124bb93423b610a5d36eb76d625a2401fcc5f368ee40bca9585ba156a06747c593bc415369ae2106ee48b94044a72a59bd1949b79

Download Submit
memory/1132-54-0x0000000075931000-0x0000000075933000-memory.dmp

Filesize
8KB

Download
memory/1132-55-0x000000000056B000-0x0000000000581000-memory.dmp

Filesize
88KB

Download
memory/1132-56-0x0000000000220000-0x0000000000229000-memory.dmp

Filesize
36KB

Download
memory/1132-57-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/1132-61-0x000000000056B000-0x0000000000581000-memory.dmp

Filesize
88KB

Download
memory/1936-59-0x0000000000000000-mapping.dmp

Download
memory/1936-63-0x000000000028B000-0x00000000002A1000-memory.dmp

Filesize
88KB

Download
memory/1936-64-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/1936-65-0x000000000028B000-0x00000000002A1000-memory.dmp

Filesize
88KB

Download