systembc | 31fc239f5d0aa2a4496d5a3bf56c77cfad7d0b7fd68e3b4d2784b82c8105502f

General

Target

31fc239f5d0aa2a4496d5a3bf56c77cfad7d0b7fd68e3b4d2784b82c8105502f.exe
Size

157KB
MD5

f4a85ad0057ce4c4a622471228cb2e6c
SHA1

24c344f1a33b3e6d2bd8fd301475c23bb8a6f30f
SHA256

31fc239f5d0aa2a4496d5a3bf56c77cfad7d0b7fd68e3b4d2784b82c8105502f
SHA512

03a4116994862357b8b162595c1ea3a5019a38411cedefcd2bed8f26bc60ca4204be1d3ea9bda306365a46cf1f43deeb90d848853238944b803fa77759911f0c

Score

10^/10

systembc trojan

Malware Config

Extracted

Family

systembc

C2

advertrex20.xyz:4044

gentexman37.xyz:4044

Signatures

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

Processes:

hijgqpt.exe

pid process

1556 hijgqpt.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

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

Connection Proxy
T1090

pid	process
1556	hijgqpt.exe

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

Drops file in Windows directory 2 IoCs

Processes:

31fc239f5d0aa2a4496d5a3bf56c77cfad7d0b7fd68e3b4d2784b82c8105502f.exe

description	ioc	process
File created	C:\Windows\Tasks\hijgqpt.job	31fc239f5d0aa2a4496d5a3bf56c77cfad7d0b7fd68e3b4d2784b82c8105502f.exe
File opened for modification	C:\Windows\Tasks\hijgqpt.job	31fc239f5d0aa2a4496d5a3bf56c77cfad7d0b7fd68e3b4d2784b82c8105502f.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

31fc239f5d0aa2a4496d5a3bf56c77cfad7d0b7fd68e3b4d2784b82c8105502f.exe

pid process

1676 31fc239f5d0aa2a4496d5a3bf56c77cfad7d0b7fd68e3b4d2784b82c8105502f.exe

pid	process
1676	31fc239f5d0aa2a4496d5a3bf56c77cfad7d0b7fd68e3b4d2784b82c8105502f.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

taskeng.exe

description	pid	process	target process
PID 616 wrote to memory of 1556	616	taskeng.exe	hijgqpt.exe
PID 616 wrote to memory of 1556	616	taskeng.exe	hijgqpt.exe
PID 616 wrote to memory of 1556	616	taskeng.exe	hijgqpt.exe
PID 616 wrote to memory of 1556	616	taskeng.exe	hijgqpt.exe

C:\Users\Admin\AppData\Local\Temp\31fc239f5d0aa2a4496d5a3bf56c77cfad7d0b7fd68e3b4d2784b82c8105502f.exe
"C:\Users\Admin\AppData\Local\Temp\31fc239f5d0aa2a4496d5a3bf56c77cfad7d0b7fd68e3b4d2784b82c8105502f.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:1676

C:\Windows\system32\taskeng.exe
taskeng.exe {323A994C-9849-4025-855D-60C17ED54A90} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:616
- C:\ProgramData\nnnm\hijgqpt.exe
  C:\ProgramData\nnnm\hijgqpt.exe start
  2⤵
  - Executes dropped EXE
  PID:1556

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\nnnm\hijgqpt.exe

Filesize
157KB

MD5
f4a85ad0057ce4c4a622471228cb2e6c

SHA1
24c344f1a33b3e6d2bd8fd301475c23bb8a6f30f

SHA256
31fc239f5d0aa2a4496d5a3bf56c77cfad7d0b7fd68e3b4d2784b82c8105502f

SHA512
03a4116994862357b8b162595c1ea3a5019a38411cedefcd2bed8f26bc60ca4204be1d3ea9bda306365a46cf1f43deeb90d848853238944b803fa77759911f0c

Download Submit
C:\ProgramData\nnnm\hijgqpt.exe

Filesize
157KB

MD5
f4a85ad0057ce4c4a622471228cb2e6c

SHA1
24c344f1a33b3e6d2bd8fd301475c23bb8a6f30f

SHA256
31fc239f5d0aa2a4496d5a3bf56c77cfad7d0b7fd68e3b4d2784b82c8105502f

SHA512
03a4116994862357b8b162595c1ea3a5019a38411cedefcd2bed8f26bc60ca4204be1d3ea9bda306365a46cf1f43deeb90d848853238944b803fa77759911f0c

Download Submit
memory/1556-60-0x0000000000000000-mapping.dmp

Download
memory/1556-62-0x000000000028B000-0x0000000000292000-memory.dmp

Filesize
28KB

Download
memory/1556-64-0x000000000028B000-0x0000000000292000-memory.dmp

Filesize
28KB

Download
memory/1556-65-0x00000000001B0000-0x00000000001B9000-memory.dmp

Filesize
36KB

Download
memory/1556-66-0x0000000000400000-0x0000000002FB4000-memory.dmp

Filesize
43.7MB

Download
memory/1676-54-0x000000000305B000-0x0000000003062000-memory.dmp

Filesize
28KB

Download
memory/1676-55-0x000000000305B000-0x0000000003062000-memory.dmp

Filesize
28KB

Download
memory/1676-56-0x0000000000220000-0x0000000000229000-memory.dmp

Filesize
36KB

Download
memory/1676-57-0x00000000749A1000-0x00000000749A3000-memory.dmp

Filesize
8KB

Download
memory/1676-58-0x0000000000400000-0x0000000002FB4000-memory.dmp

Filesize
43.7MB

Download

Analysis

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