systembc | 722aff7500dfce8737389cef11282becce37827df3ca9069b68bac66efb02287

Analysis

max time kernel
299s
max time network
300s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
16/04/2024, 13:48

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General

Target
722aff7500dfce8737389cef11282becce37827df3ca9069b68bac66efb02287.exe
Size 856KB
Sample240416-q4e1mabe82
SHA256 722aff7500dfce8737389cef11282becce37827df3ca9069b68bac66efb02287
MD5 f7d59f44fee4981011624cfad18f5337
SHA1 db1cb01bfb123b2f5fb1240d57f263573d90433f
SHA512 633774cda15ad084b8aa6cdde1783450c3bafdfb744cf3e79066632e785261f93e520b5a0f346623727f2158f562b691ab16b0e55bc209f364414843df929965
SSDEEP 1536:ysXQ0yVN2gV0GnoX1kPYqwtFUNn0WJWsa9tjUQukOVRct3Z3zAtp:xQX2gV1lwqaFFF9tjUXfVRo
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

systembc trojan

Malware Config

Extracted

Family

systembc

asdasd08.com:4039
asdasd08.xyz:4039

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
2084	rwhbq.exe

Unexpected DNS network traffic destination 1 IoCs

Network traffic to other servers than the configured DNS servers was detected on the DNS port.

description	ioc
Destination IP	88.216.223.5

Looks up external IP address via web service 4 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

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.

Proxy
T1090

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\rwhbq.job	722aff7500dfce8737389cef11282becce37827df3ca9069b68bac66efb02287.exe
File opened for modification	C:\Windows\Tasks\rwhbq.job	722aff7500dfce8737389cef11282becce37827df3ca9069b68bac66efb02287.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2732	722aff7500dfce8737389cef11282becce37827df3ca9069b68bac66efb02287.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2340 wrote to memory of 2084	2340	taskeng.exe	29
PID 2340 wrote to memory of 2084	2340	taskeng.exe	29
PID 2340 wrote to memory of 2084	2340	taskeng.exe	29
PID 2340 wrote to memory of 2084	2340	taskeng.exe	29

C:\Users\Admin\AppData\Local\Temp\722aff7500dfce8737389cef11282becce37827df3ca9069b68bac66efb02287.exe
"C:\Users\Admin\AppData\Local\Temp\722aff7500dfce8737389cef11282becce37827df3ca9069b68bac66efb02287.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:2732

C:\Windows\system32\taskeng.exe
taskeng.exe {3FA92787-EFD0-4E85-AEB3-14CE95548812} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:2340
- C:\ProgramData\rahdo\rwhbq.exe
  C:\ProgramData\rahdo\rwhbq.exe start
  2⤵
  - Executes dropped EXE
  PID:2084

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Proxy

T1090

Exfiltration

Impact

Replay Monitor

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Downloads

rwhbq.exe

Path C:\ProgramData\rahdo\rwhbq.exe
Size 856KB
SHA256 722aff7500dfce8737389cef11282becce37827df3ca9069b68bac66efb02287
MD5 f7d59f44fee4981011624cfad18f5337
SHA1 db1cb01bfb123b2f5fb1240d57f263573d90433f
SHA512 633774cda15ad084b8aa6cdde1783450c3bafdfb744cf3e79066632e785261f93e520b5a0f346623727f2158f562b691ab16b0e55bc209f364414843df929965
SSDEEP 1536:ysXQ0yVN2gV0GnoX1kPYqwtFUNn0WJWsa9tjUQukOVRct3Z3zAtp:xQX2gV1lwqaFFF9tjUXfVRo
MD5 SHA1 SHA512 SSDEEP

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