systembc | dc23e92b35cd9ceb3e8adc91a4492facfd66d65f72967ba69c57f17470f9b66f

Analysis

max time kernel
146s
max time network
149s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
06-02-2023 08:54

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General

Target

4b8b7e4c7b2aed6c3c67b3d5678f6440.exe
Size

106KB
MD5

4b8b7e4c7b2aed6c3c67b3d5678f6440
SHA1

33097d2c883f7e8248c70876cfd6c77b36a1622a
SHA256

dc23e92b35cd9ceb3e8adc91a4492facfd66d65f72967ba69c57f17470f9b66f
SHA512

51d09f79f1d3fbff711bcb99df119f625bbe2d28be99de2555dc374074b64218be8b536da96047b60449a0a7f67932e27894fa1b3ce0fb6efeadd0234e7203e6
SSDEEP

1536:8++5Uk52zLQTDgoYjylkKKPv9AmIBIZigwp6OGWVVpOJV1U5uHk0UgYc5:8zqk5ELAD4yuK52ZEp6OGA+bU5DJc5

Score

10^/10

systembc trojan

Malware Config

Extracted

Family

systembc

sdadvert197.com:4044

mexstat128.com:4044

Signatures

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

Processes:

jhbwlr.exe

pid process

1712 jhbwlr.exe
Looks up external IP address via web service 4 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

6 api.ipify.org
7 api.ipify.org
8 ip4.seeip.org
9 ip4.seeip.org
Uses Tor communications 1 TTPs
Malware can proxy its traffic through Tor for more anonymity.

Connection Proxy
T1090

pid	process
1712	jhbwlr.exe

flow	ioc
6	api.ipify.org
7	api.ipify.org
8	ip4.seeip.org
9	ip4.seeip.org

Drops file in Windows directory 2 IoCs

Processes:

4b8b7e4c7b2aed6c3c67b3d5678f6440.exe

description	ioc	process
File created	C:\Windows\Tasks\jhbwlr.job	4b8b7e4c7b2aed6c3c67b3d5678f6440.exe
File opened for modification	C:\Windows\Tasks\jhbwlr.job	4b8b7e4c7b2aed6c3c67b3d5678f6440.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

4b8b7e4c7b2aed6c3c67b3d5678f6440.exe

pid process

1476 4b8b7e4c7b2aed6c3c67b3d5678f6440.exe

pid	process
1476	4b8b7e4c7b2aed6c3c67b3d5678f6440.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

taskeng.exe

description	pid	process	target process
PID 1232 wrote to memory of 1712	1232	taskeng.exe	jhbwlr.exe
PID 1232 wrote to memory of 1712	1232	taskeng.exe	jhbwlr.exe
PID 1232 wrote to memory of 1712	1232	taskeng.exe	jhbwlr.exe
PID 1232 wrote to memory of 1712	1232	taskeng.exe	jhbwlr.exe

C:\Users\Admin\AppData\Local\Temp\4b8b7e4c7b2aed6c3c67b3d5678f6440.exe
"C:\Users\Admin\AppData\Local\Temp\4b8b7e4c7b2aed6c3c67b3d5678f6440.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:1476

C:\Windows\system32\taskeng.exe
taskeng.exe {DA545D45-DBF5-46E7-BED5-4CB62A623A2C} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:1232

C:\ProgramData\ajaw\jhbwlr.exe
C:\ProgramData\ajaw\jhbwlr.exe start
2⤵
- Executes dropped EXE
PID:1712

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Connection Proxy

T1090

Impact

Replay Monitor

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Downloads

C:\ProgramData\ajaw\jhbwlr.exe
Filesize
106KB

MD5
4b8b7e4c7b2aed6c3c67b3d5678f6440

SHA1
33097d2c883f7e8248c70876cfd6c77b36a1622a

SHA256
dc23e92b35cd9ceb3e8adc91a4492facfd66d65f72967ba69c57f17470f9b66f

SHA512
51d09f79f1d3fbff711bcb99df119f625bbe2d28be99de2555dc374074b64218be8b536da96047b60449a0a7f67932e27894fa1b3ce0fb6efeadd0234e7203e6

Download Submit
C:\ProgramData\ajaw\jhbwlr.exe
Filesize
106KB

MD5
4b8b7e4c7b2aed6c3c67b3d5678f6440

SHA1
33097d2c883f7e8248c70876cfd6c77b36a1622a

SHA256
dc23e92b35cd9ceb3e8adc91a4492facfd66d65f72967ba69c57f17470f9b66f

SHA512
51d09f79f1d3fbff711bcb99df119f625bbe2d28be99de2555dc374074b64218be8b536da96047b60449a0a7f67932e27894fa1b3ce0fb6efeadd0234e7203e6

Download Submit
memory/1476-54-0x0000000075D01000-0x0000000075D03000-memory.dmp

Filesize
8KB

Download
memory/1476-56-0x00000000001B0000-0x00000000001B9000-memory.dmp

Filesize
36KB

Download
memory/1476-55-0x000000000028B000-0x0000000000292000-memory.dmp

Filesize
28KB

Download
memory/1476-57-0x0000000000400000-0x000000000050F000-memory.dmp

Filesize
1.1MB

Download
memory/1476-64-0x000000000028B000-0x0000000000292000-memory.dmp

Filesize
28KB

Download
memory/1712-59-0x0000000000000000-mapping.dmp

Download
memory/1712-62-0x000000000059B000-0x00000000005A2000-memory.dmp

Filesize
28KB

Download
memory/1712-63-0x0000000000400000-0x000000000050F000-memory.dmp

Filesize
1.1MB

Download
memory/1712-65-0x000000000059B000-0x00000000005A2000-memory.dmp

Filesize
28KB

Download