systembc | 318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd

Resubmissions

18/04/2024, 11:20

240418-nfk6macg3w10

18/04/2024, 11:20

18/04/2024, 11:20

18/04/2024, 11:20

18/04/2024, 11:20

18/04/2024, 09:59

Analysis

max time kernel
1200s
max time network
1201s
platform
windows11-21h2_x64
resource
win11-20240412-en
resource tags

arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
submitted
18/04/2024, 11:20

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General

Target
318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe
Size 350KB
Sample240418-nfheqsbd89
SHA256 318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd
MD5 0dc61438b79668900bd081bac6109760
SHA1 2ee66fd972c2d28ad30775971ba95056951910f0
SHA512 467b352ce6188e6126050c229cd47b526e83ef3535449c3f02b70491e159523d7cc8ebb28caab4e8d98627a22a0af1faf13b134072309dfe56ad175d18177ca7
SSDEEP 6144:RoX0oZ+rm/OV6ZH7XYuB4xpuMadbr2X3f+gOkXdhFr:Ry0xrm/h7XYuWCMaV2XWgO8hFr
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

systembc trojan

Malware Config

Extracted

Family

systembc

knock0909.monster:4035
knock0909.xyz:4035

Signatures

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

Executes dropped EXE 22 IoCs

pid	Process
1464	vjjwjiv.exe
2916	vjjwjiv.exe
476	vjjwjiv.exe
3332	vjjwjiv.exe
3492	vjjwjiv.exe
2144	vjjwjiv.exe
3296	vjjwjiv.exe
3752	vjjwjiv.exe
3600	vjjwjiv.exe
3352	vjjwjiv.exe
4532	vjjwjiv.exe
4968	vjjwjiv.exe
2416	vjjwjiv.exe
5072	vjjwjiv.exe
1464	vjjwjiv.exe
2616	vjjwjiv.exe
3740	vjjwjiv.exe
104	vjjwjiv.exe
1368	vjjwjiv.exe
2588	vjjwjiv.exe
896	vjjwjiv.exe
4880	vjjwjiv.exe

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
1	api.ipify.org
2	api.ipify.org

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

Proxy
T1090

Suspicious use of SetThreadContext 12 IoCs

description	pid	Process	procid_target
PID 3052 set thread context of 2540	3052	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe	81
PID 1464 set thread context of 2916	1464	vjjwjiv.exe	83
PID 476 set thread context of 3332	476	vjjwjiv.exe	85
PID 3492 set thread context of 2144	3492	vjjwjiv.exe	87
PID 3296 set thread context of 3752	3296	vjjwjiv.exe	89
PID 3600 set thread context of 3352	3600	vjjwjiv.exe	91
PID 4532 set thread context of 4968	4532	vjjwjiv.exe	93
PID 2416 set thread context of 5072	2416	vjjwjiv.exe	95
PID 1464 set thread context of 2616	1464	vjjwjiv.exe	97
PID 3740 set thread context of 104	3740	vjjwjiv.exe	99
PID 1368 set thread context of 2588	1368	vjjwjiv.exe	101
PID 896 set thread context of 4880	896	vjjwjiv.exe	103

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\vjjwjiv.job	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe
File opened for modification	C:\Windows\Tasks\vjjwjiv.job	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2540	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe
2540	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 3052 wrote to memory of 2540	3052	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe	81
PID 3052 wrote to memory of 2540	3052	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe	81
PID 3052 wrote to memory of 2540	3052	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe	81
PID 3052 wrote to memory of 2540	3052	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe	81
PID 3052 wrote to memory of 2540	3052	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe	81
PID 3052 wrote to memory of 2540	3052	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe	81
PID 3052 wrote to memory of 2540	3052	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe	81
PID 3052 wrote to memory of 2540	3052	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe	81
PID 3052 wrote to memory of 2540	3052	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe	81
PID 1464 wrote to memory of 2916	1464	vjjwjiv.exe	83
PID 1464 wrote to memory of 2916	1464	vjjwjiv.exe	83
PID 1464 wrote to memory of 2916	1464	vjjwjiv.exe	83
PID 1464 wrote to memory of 2916	1464	vjjwjiv.exe	83
PID 1464 wrote to memory of 2916	1464	vjjwjiv.exe	83
PID 1464 wrote to memory of 2916	1464	vjjwjiv.exe	83
PID 1464 wrote to memory of 2916	1464	vjjwjiv.exe	83
PID 1464 wrote to memory of 2916	1464	vjjwjiv.exe	83
PID 1464 wrote to memory of 2916	1464	vjjwjiv.exe	83
PID 476 wrote to memory of 3332	476	vjjwjiv.exe	85
PID 476 wrote to memory of 3332	476	vjjwjiv.exe	85
PID 476 wrote to memory of 3332	476	vjjwjiv.exe	85
PID 476 wrote to memory of 3332	476	vjjwjiv.exe	85
PID 476 wrote to memory of 3332	476	vjjwjiv.exe	85
PID 476 wrote to memory of 3332	476	vjjwjiv.exe	85
PID 476 wrote to memory of 3332	476	vjjwjiv.exe	85
PID 476 wrote to memory of 3332	476	vjjwjiv.exe	85
PID 476 wrote to memory of 3332	476	vjjwjiv.exe	85
PID 3492 wrote to memory of 2144	3492	vjjwjiv.exe	87
PID 3492 wrote to memory of 2144	3492	vjjwjiv.exe	87
PID 3492 wrote to memory of 2144	3492	vjjwjiv.exe	87
PID 3492 wrote to memory of 2144	3492	vjjwjiv.exe	87
PID 3492 wrote to memory of 2144	3492	vjjwjiv.exe	87
PID 3492 wrote to memory of 2144	3492	vjjwjiv.exe	87
PID 3492 wrote to memory of 2144	3492	vjjwjiv.exe	87
PID 3492 wrote to memory of 2144	3492	vjjwjiv.exe	87
PID 3492 wrote to memory of 2144	3492	vjjwjiv.exe	87
PID 3296 wrote to memory of 3752	3296	vjjwjiv.exe	89
PID 3296 wrote to memory of 3752	3296	vjjwjiv.exe	89
PID 3296 wrote to memory of 3752	3296	vjjwjiv.exe	89
PID 3296 wrote to memory of 3752	3296	vjjwjiv.exe	89
PID 3296 wrote to memory of 3752	3296	vjjwjiv.exe	89
PID 3296 wrote to memory of 3752	3296	vjjwjiv.exe	89
PID 3296 wrote to memory of 3752	3296	vjjwjiv.exe	89
PID 3296 wrote to memory of 3752	3296	vjjwjiv.exe	89
PID 3296 wrote to memory of 3752	3296	vjjwjiv.exe	89
PID 3600 wrote to memory of 3352	3600	vjjwjiv.exe	91
PID 3600 wrote to memory of 3352	3600	vjjwjiv.exe	91
PID 3600 wrote to memory of 3352	3600	vjjwjiv.exe	91
PID 3600 wrote to memory of 3352	3600	vjjwjiv.exe	91
PID 3600 wrote to memory of 3352	3600	vjjwjiv.exe	91
PID 3600 wrote to memory of 3352	3600	vjjwjiv.exe	91
PID 3600 wrote to memory of 3352	3600	vjjwjiv.exe	91
PID 3600 wrote to memory of 3352	3600	vjjwjiv.exe	91
PID 3600 wrote to memory of 3352	3600	vjjwjiv.exe	91
PID 4532 wrote to memory of 4968	4532	vjjwjiv.exe	93
PID 4532 wrote to memory of 4968	4532	vjjwjiv.exe	93
PID 4532 wrote to memory of 4968	4532	vjjwjiv.exe	93
PID 4532 wrote to memory of 4968	4532	vjjwjiv.exe	93
PID 4532 wrote to memory of 4968	4532	vjjwjiv.exe	93
PID 4532 wrote to memory of 4968	4532	vjjwjiv.exe	93
PID 4532 wrote to memory of 4968	4532	vjjwjiv.exe	93
PID 4532 wrote to memory of 4968	4532	vjjwjiv.exe	93
PID 4532 wrote to memory of 4968	4532	vjjwjiv.exe	93
PID 2416 wrote to memory of 5072	2416	vjjwjiv.exe	95

C:\Users\Admin\AppData\Local\Temp\318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe
"C:\Users\Admin\AppData\Local\Temp\318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3052
- C:\Users\Admin\AppData\Local\Temp\318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe
  "C:\Users\Admin\AppData\Local\Temp\318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe"
  2⤵
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  PID:2540

C:\ProgramData\biaqxp\vjjwjiv.exe
C:\ProgramData\biaqxp\vjjwjiv.exe start
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1464
- C:\ProgramData\biaqxp\vjjwjiv.exe
  C:\ProgramData\biaqxp\vjjwjiv.exe start
  2⤵
  - Executes dropped EXE
  PID:2916

C:\ProgramData\biaqxp\vjjwjiv.exe
C:\ProgramData\biaqxp\vjjwjiv.exe start
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:476
- C:\ProgramData\biaqxp\vjjwjiv.exe
  C:\ProgramData\biaqxp\vjjwjiv.exe start
  2⤵
  - Executes dropped EXE
  PID:3332

C:\ProgramData\biaqxp\vjjwjiv.exe
C:\ProgramData\biaqxp\vjjwjiv.exe start
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3492
- C:\ProgramData\biaqxp\vjjwjiv.exe
  C:\ProgramData\biaqxp\vjjwjiv.exe start
  2⤵
  - Executes dropped EXE
  PID:2144

C:\ProgramData\biaqxp\vjjwjiv.exe
C:\ProgramData\biaqxp\vjjwjiv.exe start
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3296
- C:\ProgramData\biaqxp\vjjwjiv.exe
  C:\ProgramData\biaqxp\vjjwjiv.exe start
  2⤵
  - Executes dropped EXE
  PID:3752

C:\ProgramData\biaqxp\vjjwjiv.exe
C:\ProgramData\biaqxp\vjjwjiv.exe start
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3600
- C:\ProgramData\biaqxp\vjjwjiv.exe
  C:\ProgramData\biaqxp\vjjwjiv.exe start
  2⤵
  - Executes dropped EXE
  PID:3352

C:\ProgramData\biaqxp\vjjwjiv.exe
C:\ProgramData\biaqxp\vjjwjiv.exe start
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4532
- C:\ProgramData\biaqxp\vjjwjiv.exe
  C:\ProgramData\biaqxp\vjjwjiv.exe start
  2⤵
  - Executes dropped EXE
  PID:4968

C:\ProgramData\biaqxp\vjjwjiv.exe
C:\ProgramData\biaqxp\vjjwjiv.exe start
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2416
- C:\ProgramData\biaqxp\vjjwjiv.exe
  C:\ProgramData\biaqxp\vjjwjiv.exe start
  2⤵
  - Executes dropped EXE
  PID:5072

C:\ProgramData\biaqxp\vjjwjiv.exe
C:\ProgramData\biaqxp\vjjwjiv.exe start
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
PID:1464
- C:\ProgramData\biaqxp\vjjwjiv.exe
  C:\ProgramData\biaqxp\vjjwjiv.exe start
  2⤵
  - Executes dropped EXE
  PID:2616

C:\ProgramData\biaqxp\vjjwjiv.exe
C:\ProgramData\biaqxp\vjjwjiv.exe start
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
PID:3740
- C:\ProgramData\biaqxp\vjjwjiv.exe
  C:\ProgramData\biaqxp\vjjwjiv.exe start
  2⤵
  - Executes dropped EXE
  PID:104

C:\ProgramData\biaqxp\vjjwjiv.exe
C:\ProgramData\biaqxp\vjjwjiv.exe start
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
PID:1368
- C:\ProgramData\biaqxp\vjjwjiv.exe
  C:\ProgramData\biaqxp\vjjwjiv.exe start
  2⤵
  - Executes dropped EXE
  PID:2588

C:\ProgramData\biaqxp\vjjwjiv.exe
C:\ProgramData\biaqxp\vjjwjiv.exe start
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
PID:896
- C:\ProgramData\biaqxp\vjjwjiv.exe
  C:\ProgramData\biaqxp\vjjwjiv.exe start
  2⤵
  - Executes dropped EXE
  PID:4880

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

vjjwjiv.exe

Path C:\ProgramData\biaqxp\vjjwjiv.exe
Size 350KB
SHA256 318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd
MD5 0dc61438b79668900bd081bac6109760
SHA1 2ee66fd972c2d28ad30775971ba95056951910f0
SHA512 467b352ce6188e6126050c229cd47b526e83ef3535449c3f02b70491e159523d7cc8ebb28caab4e8d98627a22a0af1faf13b134072309dfe56ad175d18177ca7
SSDEEP 6144:RoX0oZ+rm/OV6ZH7XYuB4xpuMadbr2X3f+gOkXdhFr:Ry0xrm/h7XYuWCMaV2XWgO8hFr
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/476-38-0x0000000000DA0000-0x0000000000EA0000-memory.dmp

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memory/896-284-0x0000000000E80000-0x0000000000F80000-memory.dmp

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memory/1368-257-0x0000000000D30000-0x0000000000E30000-memory.dmp

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memory/1464-18-0x0000000000D40000-0x0000000000E40000-memory.dmp

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memory/1464-25-0x0000000000D40000-0x0000000000E40000-memory.dmp

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memory/1464-203-0x0000000000D10000-0x0000000000E10000-memory.dmp

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memory/2416-177-0x0000000000DEB000-0x0000000000DF1000-memory.dmp

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memory/2540-7-0x0000000000400000-0x000000000040B000-memory.dmp

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memory/2540-5-0x0000000000400000-0x000000000040B000-memory.dmp

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memory/2540-3-0x0000000000400000-0x000000000040B000-memory.dmp

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memory/3052-1-0x0000000000E30000-0x0000000000F30000-memory.dmp

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memory/3052-2-0x0000000000E10000-0x0000000000E1A000-memory.dmp

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memory/3296-93-0x0000000000EA0000-0x0000000000FA0000-memory.dmp

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memory/3296-101-0x0000000000EA0000-0x0000000000FA0000-memory.dmp

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memory/3492-64-0x0000000000E50000-0x0000000000F50000-memory.dmp

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memory/3600-129-0x0000000000E90000-0x0000000000F90000-memory.dmp

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memory/3600-122-0x0000000000E90000-0x0000000000F90000-memory.dmp

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memory/3740-231-0x0000000000EBB000-0x0000000000EC2000-memory.dmp

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memory/4532-149-0x0000000000DD0000-0x0000000000ED0000-memory.dmp

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memory/4532-157-0x0000000000DD0000-0x0000000000ED0000-memory.dmp

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