systembc | 42a191ee4f9593db8f514cce85ad8b9d6533bc71983a9529e7a5d68764d21679

Resubmissions

15/04/2024, 11:31

240415-nmzycsff4y 10

10/04/2024, 04:57

10/04/2024, 04:57

10/04/2024, 04:57

10/04/2024, 04:57

19/12/2023, 13:06

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
19/12/2023, 13:06

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General

Target

2d3ba7dd14b9a579b2626fa5baee19bd.exe
Size

209KB
MD5

2d3ba7dd14b9a579b2626fa5baee19bd
SHA1

dd365103583cfb3c10b73efc6592f8b80c1d75e0
SHA256

42a191ee4f9593db8f514cce85ad8b9d6533bc71983a9529e7a5d68764d21679
SHA512

29efd1035df73572efea0d96017772481b9858855c12d1bb96fc6a4ccd49443a4bb0d1bd86c69dda4218f04e8855ec37c4515157b75a240a530792232c4f03c0
SSDEEP

6144:YDnLgI91y1UkT57iJz/DpURWPSvHuUiYphu1UY:cnLh9yn52rpUR5vHuRYpM+Y

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
4440	obqccfi.exe

UPX packed file 1 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000800000002320c-7.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
30	api.ipify.org
31	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\obqccfi.job	2d3ba7dd14b9a579b2626fa5baee19bd.exe
File opened for modification	C:\Windows\Tasks\obqccfi.job	2d3ba7dd14b9a579b2626fa5baee19bd.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
5056	552	WerFault.exe	84

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
552	2d3ba7dd14b9a579b2626fa5baee19bd.exe
552	2d3ba7dd14b9a579b2626fa5baee19bd.exe

C:\Users\Admin\AppData\Local\Temp\2d3ba7dd14b9a579b2626fa5baee19bd.exe
"C:\Users\Admin\AppData\Local\Temp\2d3ba7dd14b9a579b2626fa5baee19bd.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:552
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 552 -s 484
  2⤵
  - Program crash
  PID:5056

C:\ProgramData\tangtur\obqccfi.exe
C:\ProgramData\tangtur\obqccfi.exe start
1⤵
- Executes dropped EXE
PID:4440

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 552 -ip 552
1⤵
PID:844

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\tangtur\obqccfi.exe

Filesize
209KB

MD5
2d3ba7dd14b9a579b2626fa5baee19bd

SHA1
dd365103583cfb3c10b73efc6592f8b80c1d75e0

SHA256
42a191ee4f9593db8f514cce85ad8b9d6533bc71983a9529e7a5d68764d21679

SHA512
29efd1035df73572efea0d96017772481b9858855c12d1bb96fc6a4ccd49443a4bb0d1bd86c69dda4218f04e8855ec37c4515157b75a240a530792232c4f03c0

Download Submit
memory/552-1-0x00000000048B0000-0x00000000049B0000-memory.dmp

Filesize
1024KB

Download
memory/552-2-0x00000000001C0000-0x00000000001C9000-memory.dmp

Filesize
36KB

Download
memory/552-3-0x0000000000400000-0x00000000045F0000-memory.dmp

Filesize
65.9MB

Download
memory/552-14-0x00000000048B0000-0x00000000049B0000-memory.dmp

Filesize
1024KB

Download
memory/552-25-0x0000000000400000-0x00000000045F0000-memory.dmp

Filesize
65.9MB

Download
memory/4440-10-0x00000000047E0000-0x00000000048E0000-memory.dmp

Filesize
1024KB

Download
memory/4440-11-0x00000000001C0000-0x00000000001C9000-memory.dmp

Filesize
36KB

Download
memory/4440-13-0x0000000000400000-0x00000000045F0000-memory.dmp

Filesize
65.9MB

Download
memory/4440-17-0x00000000047E0000-0x00000000048E0000-memory.dmp

Filesize
1024KB

Download