systembc | 98de0d13399818c6582fcce361f3768072362b657f1177a46f639b149ff981d8

General

Target

98de0d13399818c6582fcce361f3768072362b657f1177a46f639b149ff981d8.exe
Size

137KB
MD5

c684031ab0b9aab1f82ec9cf2e52ae18
SHA1

18af53cd6dc37bd5b1963dcf0562d4b98f6aa466
SHA256

98de0d13399818c6582fcce361f3768072362b657f1177a46f639b149ff981d8
SHA512

e78f5f8e917f3dd85e7cf2df43b2af4882118bd37cc04b56e660700011f1863c0580b4e6d797fee55fab2caeca55a92ba205da651707fa9b519a8e497fd156a5

Score

10^/10

systembc trojan upx

Malware Config

Extracted

Family

systembc

C2

admex175x.xyz:4044

servx278x.xyz:4044

Signatures

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

Processes:

cmhn.exe

pid process

4216 cmhn.exe

pid	process
4216	cmhn.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
C:\ProgramData\spmx\cmhn.exe	upx
C:\ProgramData\spmx\cmhn.exe	upx

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

29 api.ipify.org
38 ip4.seeip.org
39 ip4.seeip.org
Uses Tor communications 1 TTPs
Malware can proxy its traffic through Tor for more anonymity.

Connection Proxy
T1090

flow	ioc
29	api.ipify.org
38	ip4.seeip.org
39	ip4.seeip.org

Drops file in Windows directory 2 IoCs

Processes:

98de0d13399818c6582fcce361f3768072362b657f1177a46f639b149ff981d8.exe

description	ioc	process
File created	C:\Windows\Tasks\cmhn.job	98de0d13399818c6582fcce361f3768072362b657f1177a46f639b149ff981d8.exe
File opened for modification	C:\Windows\Tasks\cmhn.job	98de0d13399818c6582fcce361f3768072362b657f1177a46f639b149ff981d8.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4752 2040 WerFault.exe 98de0d13399818c6582fcce361f3768072362b657f1177a46f639b149ff981d8.exe

pid	pid_target	process	target process
4752	2040	WerFault.exe	98de0d13399818c6582fcce361f3768072362b657f1177a46f639b149ff981d8.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

98de0d13399818c6582fcce361f3768072362b657f1177a46f639b149ff981d8.exe

pid	process
2040	98de0d13399818c6582fcce361f3768072362b657f1177a46f639b149ff981d8.exe
2040	98de0d13399818c6582fcce361f3768072362b657f1177a46f639b149ff981d8.exe

C:\Users\Admin\AppData\Local\Temp\98de0d13399818c6582fcce361f3768072362b657f1177a46f639b149ff981d8.exe
"C:\Users\Admin\AppData\Local\Temp\98de0d13399818c6582fcce361f3768072362b657f1177a46f639b149ff981d8.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:2040

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2040 -s 484
2⤵
- Program crash
PID:4752

C:\ProgramData\spmx\cmhn.exe
C:\ProgramData\spmx\cmhn.exe start
1⤵
- Executes dropped EXE
PID:4216

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2040 -ip 2040
1⤵
PID:3116

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

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Downloads

C:\ProgramData\spmx\cmhn.exe
Filesize
137KB

MD5
c684031ab0b9aab1f82ec9cf2e52ae18

SHA1
18af53cd6dc37bd5b1963dcf0562d4b98f6aa466

SHA256
98de0d13399818c6582fcce361f3768072362b657f1177a46f639b149ff981d8

SHA512
e78f5f8e917f3dd85e7cf2df43b2af4882118bd37cc04b56e660700011f1863c0580b4e6d797fee55fab2caeca55a92ba205da651707fa9b519a8e497fd156a5

Download Submit
C:\ProgramData\spmx\cmhn.exe
Filesize
137KB

MD5
c684031ab0b9aab1f82ec9cf2e52ae18

SHA1
18af53cd6dc37bd5b1963dcf0562d4b98f6aa466

SHA256
98de0d13399818c6582fcce361f3768072362b657f1177a46f639b149ff981d8

SHA512
e78f5f8e917f3dd85e7cf2df43b2af4882118bd37cc04b56e660700011f1863c0580b4e6d797fee55fab2caeca55a92ba205da651707fa9b519a8e497fd156a5

Download Submit
memory/2040-130-0x000000000510A000-0x0000000005111000-memory.dmp

Filesize
28KB

Download
memory/2040-131-0x00000000050C0000-0x00000000050C9000-memory.dmp

Filesize
36KB

Download
memory/2040-132-0x0000000000400000-0x0000000004D7C000-memory.dmp

Filesize
73.5MB

Download
memory/4216-135-0x0000000004E05000-0x0000000004E0C000-memory.dmp

Filesize
28KB

Download
memory/4216-136-0x0000000000400000-0x0000000004D7C000-memory.dmp

Filesize
73.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads