systembc | 3d2a6335cf267e52f65d919aeea421c75f47878f4139a80842080485b72d2ac7

General

Target

3d2a6335cf267e52f65d919aeea421c75f47878f4139a80842080485b72d2ac7.exe
Size

267KB
MD5

e213b1c3dc9cb0f7771d299d2cf7a346
SHA1

85229bc75fb370973c78afef7409554bc891dcf1
SHA256

3d2a6335cf267e52f65d919aeea421c75f47878f4139a80842080485b72d2ac7
SHA512

9bd45559c7da861711a8f706a8c2b5dc83916ff44f988ea86eb8794daf128b5ad426b954ff58356cfc521c165fb129bdbeafe286d4184250ca66b621125514e4

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:

jkwrohb.exe

pid process

1496 jkwrohb.exe
Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

59 api.ipify.org
68 ip4.seeip.org
69 ip4.seeip.org
Uses Tor communications 1 TTPs
Malware can proxy its traffic through Tor for more anonymity.

Connection Proxy
T1090

pid	process
1496	jkwrohb.exe

flow	ioc
59	api.ipify.org
68	ip4.seeip.org
69	ip4.seeip.org

Drops file in Windows directory 2 IoCs

Processes:

3d2a6335cf267e52f65d919aeea421c75f47878f4139a80842080485b72d2ac7.exe

description	ioc	process
File created	C:\Windows\Tasks\jkwrohb.job	3d2a6335cf267e52f65d919aeea421c75f47878f4139a80842080485b72d2ac7.exe
File opened for modification	C:\Windows\Tasks\jkwrohb.job	3d2a6335cf267e52f65d919aeea421c75f47878f4139a80842080485b72d2ac7.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3840 3112 WerFault.exe 3d2a6335cf267e52f65d919aeea421c75f47878f4139a80842080485b72d2ac7.exe

pid	pid_target	process	target process
3840	3112	WerFault.exe	3d2a6335cf267e52f65d919aeea421c75f47878f4139a80842080485b72d2ac7.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

3d2a6335cf267e52f65d919aeea421c75f47878f4139a80842080485b72d2ac7.exe

pid	process
3112	3d2a6335cf267e52f65d919aeea421c75f47878f4139a80842080485b72d2ac7.exe
3112	3d2a6335cf267e52f65d919aeea421c75f47878f4139a80842080485b72d2ac7.exe

C:\Users\Admin\AppData\Local\Temp\3d2a6335cf267e52f65d919aeea421c75f47878f4139a80842080485b72d2ac7.exe
"C:\Users\Admin\AppData\Local\Temp\3d2a6335cf267e52f65d919aeea421c75f47878f4139a80842080485b72d2ac7.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:3112

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3112 -s 936
2⤵
- Program crash
PID:3840

C:\ProgramData\evdwhje\jkwrohb.exe
C:\ProgramData\evdwhje\jkwrohb.exe start
1⤵
- Executes dropped EXE
PID:1496

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3112 -ip 3112
1⤵
PID:3156

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

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Downloads

C:\ProgramData\evdwhje\jkwrohb.exe
Filesize
267KB

MD5
e213b1c3dc9cb0f7771d299d2cf7a346

SHA1
85229bc75fb370973c78afef7409554bc891dcf1

SHA256
3d2a6335cf267e52f65d919aeea421c75f47878f4139a80842080485b72d2ac7

SHA512
9bd45559c7da861711a8f706a8c2b5dc83916ff44f988ea86eb8794daf128b5ad426b954ff58356cfc521c165fb129bdbeafe286d4184250ca66b621125514e4

Download Submit
C:\ProgramData\evdwhje\jkwrohb.exe
Filesize
267KB

MD5
e213b1c3dc9cb0f7771d299d2cf7a346

SHA1
85229bc75fb370973c78afef7409554bc891dcf1

SHA256
3d2a6335cf267e52f65d919aeea421c75f47878f4139a80842080485b72d2ac7

SHA512
9bd45559c7da861711a8f706a8c2b5dc83916ff44f988ea86eb8794daf128b5ad426b954ff58356cfc521c165fb129bdbeafe286d4184250ca66b621125514e4

Download Submit
memory/1496-135-0x0000000000030000-0x0000000000036000-memory.dmp

Filesize
24KB

Download
memory/1496-136-0x00000000001C0000-0x00000000001C9000-memory.dmp

Filesize
36KB

Download
memory/1496-137-0x0000000000400000-0x00000000004D3000-memory.dmp

Filesize
844KB

Download
memory/3112-130-0x0000000000030000-0x0000000000036000-memory.dmp

Filesize
24KB

Download
memory/3112-131-0x00000000001C0000-0x00000000001C9000-memory.dmp

Filesize
36KB

Download
memory/3112-132-0x0000000000400000-0x00000000004D3000-memory.dmp

Filesize
844KB

Download

Analysis

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