systembc | 9ab42dd0edbb92405904350c550525878312858405e737c7414025dab5981c80

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15/04/2024, 11:19

240415-nfa1nada9610

10/04/2024, 03:13

10/04/2024, 03:12

10/04/2024, 03:12

10/04/2024, 03:12

22/12/2023, 00:59

Analysis

max time kernel
144s
max time network
139s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
22/12/2023, 00:59

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General

Target
3e58382005322606bd6ae12da2f209b1.exe
Size 209KB
Sample231222-bb35escaf6
SHA256 9ab42dd0edbb92405904350c550525878312858405e737c7414025dab5981c80
MD5 3e58382005322606bd6ae12da2f209b1
SHA1 0afab0c2514061f3d341f720705e54aad4a4f36e
SHA512 13c8df1f07d1584cc827fcc78b691cac78e7cd95ad0e2578974acb9bd8b0c2770d410d743fdc84ffa4c1a431ebe05772715d6bd57489abb7dc249b43b241c1ee
SSDEEP 6144:YDnLgI91y1UkT57iJz/DpURWPSvHuUiYphu1UR:cnLh9yn52rpUR5vHuRYpM+R
MD5 SHA1 SHA512 SSDEEP

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
1260	hcbbhjb.exe

UPX packed file 1 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000c00000001225f-6.dat	upx

Looks up external IP address via web service 4 IoCs

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

flow	ioc
5	api.ipify.org
6	api.ipify.org
7	ip4.seeip.org
8	ip4.seeip.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\hcbbhjb.job	3e58382005322606bd6ae12da2f209b1.exe
File opened for modification	C:\Windows\Tasks\hcbbhjb.job	3e58382005322606bd6ae12da2f209b1.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2372	3e58382005322606bd6ae12da2f209b1.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2072 wrote to memory of 1260	2072	taskeng.exe	29
PID 2072 wrote to memory of 1260	2072	taskeng.exe	29
PID 2072 wrote to memory of 1260	2072	taskeng.exe	29
PID 2072 wrote to memory of 1260	2072	taskeng.exe	29

C:\Users\Admin\AppData\Local\Temp\3e58382005322606bd6ae12da2f209b1.exe
"C:\Users\Admin\AppData\Local\Temp\3e58382005322606bd6ae12da2f209b1.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:2372

C:\Windows\system32\taskeng.exe
taskeng.exe {5A7B7C7A-C460-48A7-826B-792E3C02489B} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:2072
- C:\ProgramData\qijmuf\hcbbhjb.exe
  C:\ProgramData\qijmuf\hcbbhjb.exe start
  2⤵
  - Executes dropped EXE
  PID:1260

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

hcbbhjb.exe

Path C:\ProgramData\qijmuf\hcbbhjb.exe
Size 209KB
SHA256 9ab42dd0edbb92405904350c550525878312858405e737c7414025dab5981c80
MD5 3e58382005322606bd6ae12da2f209b1
SHA1 0afab0c2514061f3d341f720705e54aad4a4f36e
SHA512 13c8df1f07d1584cc827fcc78b691cac78e7cd95ad0e2578974acb9bd8b0c2770d410d743fdc84ffa4c1a431ebe05772715d6bd57489abb7dc249b43b241c1ee
SSDEEP 6144:YDnLgI91y1UkT57iJz/DpURWPSvHuUiYphu1UR:cnLh9yn52rpUR5vHuRYpM+R
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1260-10-0x0000000004690000-0x0000000004790000-memory.dmp

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memory/1260-12-0x0000000000400000-0x00000000045F0000-memory.dmp

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memory/1260-16-0x0000000004690000-0x0000000004790000-memory.dmp

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memory/2372-1-0x00000000046E0000-0x00000000047E0000-memory.dmp

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memory/2372-2-0x0000000000020000-0x0000000000029000-memory.dmp

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memory/2372-9-0x0000000000400000-0x00000000045F0000-memory.dmp

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memory/2372-13-0x00000000046E0000-0x00000000047E0000-memory.dmp

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