systembc | 88f4f48515fa6a2e7499d28c5d1a6c3558785c1b136ce60c5815a5f9095cb1a9

General

Target

88f4f48515fa6a2e7499d28c5d1a6c3558785c1b136ce60c5815a5f9095cb1a9.exe
Size

357KB
MD5

32294f57e6775a1395ece90371a9deb3
SHA1

f10794c6e6df36de1d5709492f25b9a5a5a246ae
SHA256

88f4f48515fa6a2e7499d28c5d1a6c3558785c1b136ce60c5815a5f9095cb1a9
SHA512

6cf3b10b5b5dc96a57a0ceb7376c31821e821b05900edf95ead5dc70ed2b2d8bab39d950ae6653fce8a1345d9dc0ef15256ccf2116fe3cb16c40713c8cc25677

Score

10^/10

systembc trojan

Malware Config

Extracted

Family

systembc

C2

26asdcgd.com:4039

26asdcgd.xyz:4039

Signatures

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

Processes:

fkewxg.exe

pid process

1152 fkewxg.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 ip4.seeip.org
8 ip4.seeip.org
5 api.ipify.org
Uses Tor communications 1 TTPs
Malware can proxy its traffic through Tor for more anonymity.

Connection Proxy
T1090

pid	process
1152	fkewxg.exe

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

Drops file in Windows directory 2 IoCs

Processes:

88f4f48515fa6a2e7499d28c5d1a6c3558785c1b136ce60c5815a5f9095cb1a9.exe

description	ioc	process
File created	C:\Windows\Tasks\fkewxg.job	88f4f48515fa6a2e7499d28c5d1a6c3558785c1b136ce60c5815a5f9095cb1a9.exe
File opened for modification	C:\Windows\Tasks\fkewxg.job	88f4f48515fa6a2e7499d28c5d1a6c3558785c1b136ce60c5815a5f9095cb1a9.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

88f4f48515fa6a2e7499d28c5d1a6c3558785c1b136ce60c5815a5f9095cb1a9.exe

pid process

1520 88f4f48515fa6a2e7499d28c5d1a6c3558785c1b136ce60c5815a5f9095cb1a9.exe

pid	process
1520	88f4f48515fa6a2e7499d28c5d1a6c3558785c1b136ce60c5815a5f9095cb1a9.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

taskeng.exe

description	pid	process	target process
PID 1356 wrote to memory of 1152	1356	taskeng.exe	fkewxg.exe
PID 1356 wrote to memory of 1152	1356	taskeng.exe	fkewxg.exe
PID 1356 wrote to memory of 1152	1356	taskeng.exe	fkewxg.exe
PID 1356 wrote to memory of 1152	1356	taskeng.exe	fkewxg.exe

C:\Users\Admin\AppData\Local\Temp\88f4f48515fa6a2e7499d28c5d1a6c3558785c1b136ce60c5815a5f9095cb1a9.exe
"C:\Users\Admin\AppData\Local\Temp\88f4f48515fa6a2e7499d28c5d1a6c3558785c1b136ce60c5815a5f9095cb1a9.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:1520

C:\Windows\system32\taskeng.exe
taskeng.exe {76699236-F41B-471E-AEE6-27221BE7FFA3} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:1356

C:\ProgramData\tndeg\fkewxg.exe
C:\ProgramData\tndeg\fkewxg.exe start
2⤵
- Executes dropped EXE
PID:1152

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Connection Proxy

1

T1090

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Connection Proxy

1

T1090

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\tndeg\fkewxg.exe
Filesize
357KB

MD5
32294f57e6775a1395ece90371a9deb3

SHA1
f10794c6e6df36de1d5709492f25b9a5a5a246ae

SHA256
88f4f48515fa6a2e7499d28c5d1a6c3558785c1b136ce60c5815a5f9095cb1a9

SHA512
6cf3b10b5b5dc96a57a0ceb7376c31821e821b05900edf95ead5dc70ed2b2d8bab39d950ae6653fce8a1345d9dc0ef15256ccf2116fe3cb16c40713c8cc25677

Download Submit
C:\ProgramData\tndeg\fkewxg.exe
Filesize
357KB

MD5
32294f57e6775a1395ece90371a9deb3

SHA1
f10794c6e6df36de1d5709492f25b9a5a5a246ae

SHA256
88f4f48515fa6a2e7499d28c5d1a6c3558785c1b136ce60c5815a5f9095cb1a9

SHA512
6cf3b10b5b5dc96a57a0ceb7376c31821e821b05900edf95ead5dc70ed2b2d8bab39d950ae6653fce8a1345d9dc0ef15256ccf2116fe3cb16c40713c8cc25677

Download Submit
memory/1152-60-0x0000000000000000-mapping.dmp

Download
memory/1152-62-0x00000000002D9000-0x00000000002DF000-memory.dmp

Filesize
24KB

Download
memory/1152-64-0x00000000002D9000-0x00000000002DF000-memory.dmp

Filesize
24KB

Download
memory/1152-65-0x0000000000400000-0x0000000000C33000-memory.dmp

Filesize
8.2MB

Download
memory/1520-54-0x0000000000D39000-0x0000000000D3F000-memory.dmp

Filesize
24KB

Download
memory/1520-55-0x0000000076451000-0x0000000076453000-memory.dmp

Filesize
8KB

Download
memory/1520-57-0x0000000000220000-0x0000000000229000-memory.dmp

Filesize
36KB

Download
memory/1520-56-0x0000000000D39000-0x0000000000D3F000-memory.dmp

Filesize
24KB

Download
memory/1520-58-0x0000000000400000-0x0000000000C33000-memory.dmp

Filesize
8.2MB

Download

Analysis

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