systembc | 83accd1cbe7ed2c6db27dcc000e940ab475b40dec95847779cc47905aaa909ea

max time kernel
299s
max time network
301s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
09/04/2024, 08:13

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General

Target
sample.exe
Size 171KB
Sample240409-j4lpvaad28
SHA256 c68035aabbe9b80ace209290aa28b8108cbb03a9d6a6301eb9a8d638db024ad0
MD5 8e3a80163ebba090c69ecdeec8860c8b
SHA1 3beb3fdd46f78d54c19f5d66f46172d6f5cde830
SHA512 fe327e9f59d87f333ec0b2fcae916f41af8e5df5edaa2a2085e7998f3903746ad7de8b891f553b81d44ee49098de3105fae24e380c540b50c78a96ffc859da03
SSDEEP 3072:PGq7Cm2r13QuGGz7qr+qf8v0knEyc9TXA2J:Pj7jmGqqrlfGDcfJ
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

systembc trojan upx

Malware Config

Extracted

Family

systembc

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

pid	Process
5076	xcitkt.exe

UPX packed file 1 IoCs

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

upx

resource	yara_rule
behavioral3/files/0x0009000000023207-6.dat	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.

flow	ioc
24	api.ipify.org
25	api.ipify.org
48	api.ipify.org

Uses Tor communications 1 TTPs
Malware can proxy its traffic through Tor for more anonymity.

Proxy
T1090

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\xcitkt.job	sample.exe
File opened for modification	C:\Windows\Tasks\xcitkt.job	sample.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
548	2116	WerFault.exe	85

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2116	sample.exe
2116	sample.exe

C:\Users\Admin\AppData\Local\Temp\sample.exe
"C:\Users\Admin\AppData\Local\Temp\sample.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:2116
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2116 -s 952
  2⤵
  - Program crash
  PID:548

C:\ProgramData\spnkbhf\xcitkt.exe
C:\ProgramData\spnkbhf\xcitkt.exe start
1⤵
- Executes dropped EXE
PID:5076

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 2116 -ip 2116
1⤵
PID:3936

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Proxy

T1090

Exfiltration

Impact

Replay Monitor

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Downloads

xcitkt.exe

Path C:\ProgramData\spnkbhf\xcitkt.exe
Size 171KB
SHA256 c68035aabbe9b80ace209290aa28b8108cbb03a9d6a6301eb9a8d638db024ad0
MD5 8e3a80163ebba090c69ecdeec8860c8b
SHA1 3beb3fdd46f78d54c19f5d66f46172d6f5cde830
SHA512 fe327e9f59d87f333ec0b2fcae916f41af8e5df5edaa2a2085e7998f3903746ad7de8b891f553b81d44ee49098de3105fae24e380c540b50c78a96ffc859da03
SSDEEP 3072:PGq7Cm2r13QuGGz7qr+qf8v0knEyc9TXA2J:Pj7jmGqqrlfGDcfJ
MD5 SHA1 SHA512 SSDEEP

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memory/2116-1-0x00000000052F0000-0x00000000053F0000-memory.dmp

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memory/2116-2-0x00000000051E0000-0x00000000051E9000-memory.dmp

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memory/2116-9-0x0000000000400000-0x0000000005162000-memory.dmp

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memory/2116-14-0x00000000052F0000-0x00000000053F0000-memory.dmp

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memory/5076-10-0x0000000005320000-0x0000000005420000-memory.dmp

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memory/5076-11-0x00000000052C0000-0x00000000052C9000-memory.dmp

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memory/5076-13-0x0000000000400000-0x0000000005162000-memory.dmp

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memory/5076-17-0x0000000005320000-0x0000000005420000-memory.dmp

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