systembc | 7582fd4ed2e0b92d254962953083d90b3324d41a3a81ff30f146af4b3ae4e442

Resubmissions

15/04/2024, 11:17

240415-ndzk8sfd4y 10

10/04/2024, 03:11

10/04/2024, 03:11

10/04/2024, 03:11

10/04/2024, 03:11

22/12/2023, 01:14

Analysis

max time kernel
600s
max time network
604s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
10/04/2024, 03:11

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General

Target

4307ea6dc3759c609a950c11763ebe3e.exe
Size

209KB
MD5

4307ea6dc3759c609a950c11763ebe3e
SHA1

dbfe522524e2157b62939e11fba0caea4b5758eb
SHA256

7582fd4ed2e0b92d254962953083d90b3324d41a3a81ff30f146af4b3ae4e442
SHA512

2afc23f09d5369fb036b8f8e831019ba6dd309d49662d9a8e85322bdd9d1c33e349454f2ba86621b01469efe3175ed9d38612691e34d6862f98d469281ca19a9
SSDEEP

6144:YDnLgI91y1UkT57iJz/DpURWPSvHuUiYphu1U6:cnLh9yn52rpUR5vHuRYpM+6

Score

10^/10

systembc trojan upx

Malware Config

Extracted

Family

systembc

yan0212.com:4039

yan0212.net:4039

Signatures

SystemBC
SystemBC is a proxy and remote administration tool first seen in 2019.
trojan systembc

Executes dropped EXE 1 IoCs

pid	Process
1916	uehv.exe

UPX packed file 1 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000800000001abb8-6.dat	upx

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
5	api.ipify.org
4	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\uehv.job	4307ea6dc3759c609a950c11763ebe3e.exe
File opened for modification	C:\Windows\Tasks\uehv.job	4307ea6dc3759c609a950c11763ebe3e.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4972	4307ea6dc3759c609a950c11763ebe3e.exe
4972	4307ea6dc3759c609a950c11763ebe3e.exe

C:\Users\Admin\AppData\Local\Temp\4307ea6dc3759c609a950c11763ebe3e.exe
"C:\Users\Admin\AppData\Local\Temp\4307ea6dc3759c609a950c11763ebe3e.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:4972

C:\ProgramData\puat\uehv.exe
C:\ProgramData\puat\uehv.exe start
1⤵
- Executes dropped EXE
PID:1916

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

C:\ProgramData\puat\uehv.exe

Filesize
209KB

MD5
4307ea6dc3759c609a950c11763ebe3e

SHA1
dbfe522524e2157b62939e11fba0caea4b5758eb

SHA256
7582fd4ed2e0b92d254962953083d90b3324d41a3a81ff30f146af4b3ae4e442

SHA512
2afc23f09d5369fb036b8f8e831019ba6dd309d49662d9a8e85322bdd9d1c33e349454f2ba86621b01469efe3175ed9d38612691e34d6862f98d469281ca19a9

Download Submit
memory/1916-11-0x00000000001C0000-0x00000000001C9000-memory.dmp

Filesize
36KB

Download
memory/1916-10-0x0000000004660000-0x0000000004760000-memory.dmp

Filesize
1024KB

Download
memory/1916-13-0x0000000000400000-0x00000000045F0000-memory.dmp

Filesize
65.9MB

Download
memory/1916-18-0x0000000004660000-0x0000000004760000-memory.dmp

Filesize
1024KB

Download
memory/4972-2-0x00000000001C0000-0x00000000001C9000-memory.dmp

Filesize
36KB

Download
memory/4972-1-0x00000000048F0000-0x00000000049F0000-memory.dmp

Filesize
1024KB

Download
memory/4972-9-0x0000000000400000-0x00000000045F0000-memory.dmp

Filesize
65.9MB

Download
memory/4972-14-0x00000000048F0000-0x00000000049F0000-memory.dmp

Filesize
1024KB

Download