systembc | 7d4a3ce8e269ef7635679fbb1502530c5d4b91d741be625d231fcfb9fb43f3e3

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
11-02-2023 01:12

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General

Target

d7cd8a0d0003d4d6fb0e9b47b5661739fe1b9e8280643c223d7537a07ad1343a.exe
Size

255KB
MD5

42355af7e650564732d94c7b60d0cfcb
SHA1

57463c359b84421c21d4a8b4a0641164ee49d5d7
SHA256

d7cd8a0d0003d4d6fb0e9b47b5661739fe1b9e8280643c223d7537a07ad1343a
SHA512

ca3bc88d37a07e00c34c24386fac1768b30e74bcd136a1d164d0718c99ce3f5fd7c9cccb409f5c8dee6591a3fc710c8040faa0c90a31e742ff8c51a320ddb3df
SSDEEP

6144:4tQ/qjV2OueGV+YT2y0xKxJAm16J3VPQ39MUR:8p2uYyvK/j1soMo

Score

10^/10

systembc trojan upx

Malware Config

Extracted

Family

systembc

mdadvertx17.xyz:4044

pkspacex19.xyz:4044

Signatures

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

Processes:

fjkt.exefjkt.exe

pid process

3660 fjkt.exe
4160 fjkt.exe

pid	process
3660	fjkt.exe
4160	fjkt.exe

UPX packed file 9 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/996-132-0x0000000000400000-0x0000000000471000-memory.dmp	upx
behavioral2/memory/996-133-0x0000000000400000-0x0000000000471000-memory.dmp	upx
C:\ProgramData\cchlmq\fjkt.exe	upx
C:\ProgramData\cchlmq\fjkt.exe	upx
behavioral2/memory/3660-139-0x0000000000400000-0x0000000000471000-memory.dmp	upx
behavioral2/memory/3660-140-0x0000000000400000-0x0000000000471000-memory.dmp	upx
C:\ProgramData\cchlmq\fjkt.exe	upx
behavioral2/memory/4160-147-0x0000000000400000-0x0000000000471000-memory.dmp	upx
behavioral2/memory/4160-148-0x0000000000400000-0x0000000000471000-memory.dmp	upx

Drops file in Windows directory 2 IoCs

Processes:

d7cd8a0d0003d4d6fb0e9b47b5661739fe1b9e8280643c223d7537a07ad1343a.exe

description	ioc	process
File created	C:\Windows\Tasks\fjkt.job	d7cd8a0d0003d4d6fb0e9b47b5661739fe1b9e8280643c223d7537a07ad1343a.exe
File opened for modification	C:\Windows\Tasks\fjkt.job	d7cd8a0d0003d4d6fb0e9b47b5661739fe1b9e8280643c223d7537a07ad1343a.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

d7cd8a0d0003d4d6fb0e9b47b5661739fe1b9e8280643c223d7537a07ad1343a.exe

pid	process
996	d7cd8a0d0003d4d6fb0e9b47b5661739fe1b9e8280643c223d7537a07ad1343a.exe
996	d7cd8a0d0003d4d6fb0e9b47b5661739fe1b9e8280643c223d7537a07ad1343a.exe

C:\Users\Admin\AppData\Local\Temp\d7cd8a0d0003d4d6fb0e9b47b5661739fe1b9e8280643c223d7537a07ad1343a.exe
"C:\Users\Admin\AppData\Local\Temp\d7cd8a0d0003d4d6fb0e9b47b5661739fe1b9e8280643c223d7537a07ad1343a.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:996

C:\ProgramData\cchlmq\fjkt.exe
C:\ProgramData\cchlmq\fjkt.exe start2
1⤵
- Executes dropped EXE
PID:3660

C:\ProgramData\cchlmq\fjkt.exe
C:\ProgramData\cchlmq\fjkt.exe start2
1⤵
- Executes dropped EXE
PID:4160

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

C:\ProgramData\cchlmq\fjkt.exe
Filesize
255KB

MD5
42355af7e650564732d94c7b60d0cfcb

SHA1
57463c359b84421c21d4a8b4a0641164ee49d5d7

SHA256
d7cd8a0d0003d4d6fb0e9b47b5661739fe1b9e8280643c223d7537a07ad1343a

SHA512
ca3bc88d37a07e00c34c24386fac1768b30e74bcd136a1d164d0718c99ce3f5fd7c9cccb409f5c8dee6591a3fc710c8040faa0c90a31e742ff8c51a320ddb3df

Download Submit
C:\ProgramData\cchlmq\fjkt.exe
Filesize
255KB

MD5
42355af7e650564732d94c7b60d0cfcb

SHA1
57463c359b84421c21d4a8b4a0641164ee49d5d7

SHA256
d7cd8a0d0003d4d6fb0e9b47b5661739fe1b9e8280643c223d7537a07ad1343a

SHA512
ca3bc88d37a07e00c34c24386fac1768b30e74bcd136a1d164d0718c99ce3f5fd7c9cccb409f5c8dee6591a3fc710c8040faa0c90a31e742ff8c51a320ddb3df

Download Submit
C:\ProgramData\cchlmq\fjkt.exe
Filesize
255KB

MD5
42355af7e650564732d94c7b60d0cfcb

SHA1
57463c359b84421c21d4a8b4a0641164ee49d5d7

SHA256
d7cd8a0d0003d4d6fb0e9b47b5661739fe1b9e8280643c223d7537a07ad1343a

SHA512
ca3bc88d37a07e00c34c24386fac1768b30e74bcd136a1d164d0718c99ce3f5fd7c9cccb409f5c8dee6591a3fc710c8040faa0c90a31e742ff8c51a320ddb3df

Download Submit
memory/996-144-0x0000000000400000-0x0000000000471000-memory.dmp

Filesize
452KB

Download
memory/996-136-0x0000000000920000-0x0000000000ED3000-memory.dmp

Filesize
5.7MB

Download
memory/996-135-0x0000000000920000-0x0000000000ED3000-memory.dmp

Filesize
5.7MB

Download
memory/996-134-0x0000000000400000-0x0000000000471000-memory.dmp

Filesize
452KB

Download
memory/996-133-0x0000000000400000-0x0000000000471000-memory.dmp

Filesize
452KB

Download
memory/996-132-0x0000000000400000-0x0000000000471000-memory.dmp

Filesize
452KB

Download
memory/3660-142-0x0000000000400000-0x0000000000471000-memory.dmp

Filesize
452KB

Download
memory/3660-141-0x0000000002160000-0x0000000002168000-memory.dmp

Filesize
32KB

Download
memory/3660-143-0x0000000002160000-0x0000000002168000-memory.dmp

Filesize
32KB

Download
memory/3660-140-0x0000000000400000-0x0000000000471000-memory.dmp

Filesize
452KB

Download
memory/3660-145-0x0000000000400000-0x0000000000471000-memory.dmp

Filesize
452KB

Download
memory/3660-139-0x0000000000400000-0x0000000000471000-memory.dmp

Filesize
452KB

Download
memory/4160-147-0x0000000000400000-0x0000000000471000-memory.dmp

Filesize
452KB

Download
memory/4160-148-0x0000000000400000-0x0000000000471000-memory.dmp

Filesize
452KB

Download
memory/4160-149-0x0000000000400000-0x0000000000471000-memory.dmp

Filesize
452KB

Download