systembc | e901c09fe8b81cf2a87de97087faf4cafce7287a3784907cb52806ca1cfa20f6

General

Target

e901c09fe8b81cf2a87de97087faf4cafce7287a3784907cb52806ca1cfa20f6.exe
Size

86KB
MD5

ee901758b646be29eec10374025e5aea
SHA1

5dce870f80a5a97d0a05df73696222b7c2a3d528
SHA256

e901c09fe8b81cf2a87de97087faf4cafce7287a3784907cb52806ca1cfa20f6
SHA512

9c7b1911e92395e41bd10a5138475063ff7675220fdb10722e35f830e2f132d97a9449dfb61547f7866a3a1a9e6cf3401b29359e982035ebb08345fd0303fc65

Score

10^/10

systembc suricata 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
suricata: ET MALWARE Observed SystemBC CnC Domain in DNS Query
suricata: ET MALWARE Observed SystemBC CnC Domain in DNS Query
suricata
Executes dropped EXE 1 IoCs

Processes:

infg.exe

pid process

960 infg.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

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

Connection Proxy
T1090

pid	process
960	infg.exe

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

Drops file in Windows directory 2 IoCs

Processes:

e901c09fe8b81cf2a87de97087faf4cafce7287a3784907cb52806ca1cfa20f6.exe

description	ioc	process
File created	C:\Windows\Tasks\infg.job	e901c09fe8b81cf2a87de97087faf4cafce7287a3784907cb52806ca1cfa20f6.exe
File opened for modification	C:\Windows\Tasks\infg.job	e901c09fe8b81cf2a87de97087faf4cafce7287a3784907cb52806ca1cfa20f6.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

e901c09fe8b81cf2a87de97087faf4cafce7287a3784907cb52806ca1cfa20f6.exe

pid process

1988 e901c09fe8b81cf2a87de97087faf4cafce7287a3784907cb52806ca1cfa20f6.exe

pid	process
1988	e901c09fe8b81cf2a87de97087faf4cafce7287a3784907cb52806ca1cfa20f6.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

taskeng.exe

description	pid	process	target process
PID 1216 wrote to memory of 960	1216	taskeng.exe	infg.exe
PID 1216 wrote to memory of 960	1216	taskeng.exe	infg.exe
PID 1216 wrote to memory of 960	1216	taskeng.exe	infg.exe
PID 1216 wrote to memory of 960	1216	taskeng.exe	infg.exe

C:\Users\Admin\AppData\Local\Temp\e901c09fe8b81cf2a87de97087faf4cafce7287a3784907cb52806ca1cfa20f6.exe
"C:\Users\Admin\AppData\Local\Temp\e901c09fe8b81cf2a87de97087faf4cafce7287a3784907cb52806ca1cfa20f6.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:1988

C:\Windows\system32\taskeng.exe
taskeng.exe {F02F20C0-AE28-4216-8955-7E8D5915779E} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:1216

C:\ProgramData\vvurk\infg.exe
C:\ProgramData\vvurk\infg.exe start
2⤵
- Executes dropped EXE
PID:960

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

1

T1090

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\vvurk\infg.exe
Filesize
86KB

MD5
ee901758b646be29eec10374025e5aea

SHA1
5dce870f80a5a97d0a05df73696222b7c2a3d528

SHA256
e901c09fe8b81cf2a87de97087faf4cafce7287a3784907cb52806ca1cfa20f6

SHA512
9c7b1911e92395e41bd10a5138475063ff7675220fdb10722e35f830e2f132d97a9449dfb61547f7866a3a1a9e6cf3401b29359e982035ebb08345fd0303fc65

Download Submit
C:\ProgramData\vvurk\infg.exe
Filesize
86KB

MD5
ee901758b646be29eec10374025e5aea

SHA1
5dce870f80a5a97d0a05df73696222b7c2a3d528

SHA256
e901c09fe8b81cf2a87de97087faf4cafce7287a3784907cb52806ca1cfa20f6

SHA512
9c7b1911e92395e41bd10a5138475063ff7675220fdb10722e35f830e2f132d97a9449dfb61547f7866a3a1a9e6cf3401b29359e982035ebb08345fd0303fc65

Download Submit
memory/960-59-0x0000000000000000-mapping.dmp

Download
memory/960-63-0x0000000000360000-0x0000000000369000-memory.dmp

Filesize
36KB

Download
memory/960-62-0x00000000030FB000-0x0000000003102000-memory.dmp

Filesize
28KB

Download
memory/960-64-0x0000000000400000-0x0000000002FA1000-memory.dmp

Filesize
43.6MB

Download
memory/1988-54-0x0000000076781000-0x0000000076783000-memory.dmp

Filesize
8KB

Download
memory/1988-55-0x000000000026B000-0x0000000000272000-memory.dmp

Filesize
28KB

Download
memory/1988-56-0x00000000001B0000-0x00000000001B9000-memory.dmp

Filesize
36KB

Download
memory/1988-57-0x0000000000400000-0x0000000002FA1000-memory.dmp

Filesize
43.6MB

Download

Analysis

Sharing