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
1199s
max time network
1204s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-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
2728	fmgsln.exe
2708	fmgsln.exe
1276	fmgsln.exe
2636	fmgsln.exe
1656	fmgsln.exe
1376	fmgsln.exe
2704	fmgsln.exe
2740	fmgsln.exe
1480	fmgsln.exe
1948	fmgsln.exe
1612	fmgsln.exe
1636	fmgsln.exe
2236	fmgsln.exe
1992	fmgsln.exe
1460	fmgsln.exe
1756	fmgsln.exe
2924	fmgsln.exe
892	fmgsln.exe
3044	fmgsln.exe
860	fmgsln.exe
1632	fmgsln.exe
1624	fmgsln.exe

Unexpected DNS network traffic destination 1 IoCs

Network traffic to other servers than the configured DNS servers was detected on the DNS port.

description	ioc
Destination IP	88.198.207.48

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

Suspicious use of SetThreadContext 12 IoCs

description	pid	Process	procid_target
PID 1284 set thread context of 2744	1284	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe	28
PID 2728 set thread context of 2708	2728	fmgsln.exe	31
PID 1276 set thread context of 2636	1276	fmgsln.exe	35
PID 1656 set thread context of 1376	1656	fmgsln.exe	37
PID 2704 set thread context of 2740	2704	fmgsln.exe	39
PID 1480 set thread context of 1948	1480	fmgsln.exe	41
PID 1612 set thread context of 1636	1612	fmgsln.exe	43
PID 2236 set thread context of 1992	2236	fmgsln.exe	45
PID 1460 set thread context of 1756	1460	fmgsln.exe	47
PID 2924 set thread context of 892	2924	fmgsln.exe	49
PID 3044 set thread context of 860	3044	fmgsln.exe	51
PID 1632 set thread context of 1624	1632	fmgsln.exe	53

Drops file in Windows directory 2 IoCs

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

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2744	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1284 wrote to memory of 2744	1284	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe	28
PID 1284 wrote to memory of 2744	1284	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe	28
PID 1284 wrote to memory of 2744	1284	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe	28
PID 1284 wrote to memory of 2744	1284	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe	28
PID 1284 wrote to memory of 2744	1284	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe	28
PID 1284 wrote to memory of 2744	1284	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe	28
PID 1284 wrote to memory of 2744	1284	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe	28
PID 1284 wrote to memory of 2744	1284	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe	28
PID 1284 wrote to memory of 2744	1284	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe	28
PID 1284 wrote to memory of 2744	1284	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe	28
PID 2680 wrote to memory of 2728	2680	taskeng.exe	30
PID 2680 wrote to memory of 2728	2680	taskeng.exe	30
PID 2680 wrote to memory of 2728	2680	taskeng.exe	30
PID 2680 wrote to memory of 2728	2680	taskeng.exe	30
PID 2728 wrote to memory of 2708	2728	fmgsln.exe	31
PID 2728 wrote to memory of 2708	2728	fmgsln.exe	31
PID 2728 wrote to memory of 2708	2728	fmgsln.exe	31
PID 2728 wrote to memory of 2708	2728	fmgsln.exe	31
PID 2728 wrote to memory of 2708	2728	fmgsln.exe	31
PID 2728 wrote to memory of 2708	2728	fmgsln.exe	31
PID 2728 wrote to memory of 2708	2728	fmgsln.exe	31
PID 2728 wrote to memory of 2708	2728	fmgsln.exe	31
PID 2728 wrote to memory of 2708	2728	fmgsln.exe	31
PID 2728 wrote to memory of 2708	2728	fmgsln.exe	31
PID 2680 wrote to memory of 1276	2680	taskeng.exe	34
PID 2680 wrote to memory of 1276	2680	taskeng.exe	34
PID 2680 wrote to memory of 1276	2680	taskeng.exe	34
PID 2680 wrote to memory of 1276	2680	taskeng.exe	34
PID 1276 wrote to memory of 2636	1276	fmgsln.exe	35
PID 1276 wrote to memory of 2636	1276	fmgsln.exe	35
PID 1276 wrote to memory of 2636	1276	fmgsln.exe	35
PID 1276 wrote to memory of 2636	1276	fmgsln.exe	35
PID 1276 wrote to memory of 2636	1276	fmgsln.exe	35
PID 1276 wrote to memory of 2636	1276	fmgsln.exe	35
PID 1276 wrote to memory of 2636	1276	fmgsln.exe	35
PID 1276 wrote to memory of 2636	1276	fmgsln.exe	35
PID 1276 wrote to memory of 2636	1276	fmgsln.exe	35
PID 1276 wrote to memory of 2636	1276	fmgsln.exe	35
PID 2680 wrote to memory of 1656	2680	taskeng.exe	36
PID 2680 wrote to memory of 1656	2680	taskeng.exe	36
PID 2680 wrote to memory of 1656	2680	taskeng.exe	36
PID 2680 wrote to memory of 1656	2680	taskeng.exe	36
PID 1656 wrote to memory of 1376	1656	fmgsln.exe	37
PID 1656 wrote to memory of 1376	1656	fmgsln.exe	37
PID 1656 wrote to memory of 1376	1656	fmgsln.exe	37
PID 1656 wrote to memory of 1376	1656	fmgsln.exe	37
PID 1656 wrote to memory of 1376	1656	fmgsln.exe	37
PID 1656 wrote to memory of 1376	1656	fmgsln.exe	37
PID 1656 wrote to memory of 1376	1656	fmgsln.exe	37
PID 1656 wrote to memory of 1376	1656	fmgsln.exe	37
PID 1656 wrote to memory of 1376	1656	fmgsln.exe	37
PID 1656 wrote to memory of 1376	1656	fmgsln.exe	37
PID 2680 wrote to memory of 2704	2680	taskeng.exe	38
PID 2680 wrote to memory of 2704	2680	taskeng.exe	38
PID 2680 wrote to memory of 2704	2680	taskeng.exe	38
PID 2680 wrote to memory of 2704	2680	taskeng.exe	38
PID 2704 wrote to memory of 2740	2704	fmgsln.exe	39
PID 2704 wrote to memory of 2740	2704	fmgsln.exe	39
PID 2704 wrote to memory of 2740	2704	fmgsln.exe	39
PID 2704 wrote to memory of 2740	2704	fmgsln.exe	39
PID 2704 wrote to memory of 2740	2704	fmgsln.exe	39
PID 2704 wrote to memory of 2740	2704	fmgsln.exe	39
PID 2704 wrote to memory of 2740	2704	fmgsln.exe	39
PID 2704 wrote to memory of 2740	2704	fmgsln.exe	39

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:1284
- 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:2744

C:\Windows\system32\taskeng.exe
taskeng.exe {A3815121-5A42-44AF-9D7A-BD1D9608860A} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:2680
- C:\ProgramData\gfal\fmgsln.exe
  C:\ProgramData\gfal\fmgsln.exe start
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:2728
- - C:\ProgramData\gfal\fmgsln.exe
    C:\ProgramData\gfal\fmgsln.exe start
    3⤵
    - Executes dropped EXE
    PID:2708
- C:\ProgramData\gfal\fmgsln.exe
  C:\ProgramData\gfal\fmgsln.exe start
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:1276
- - C:\ProgramData\gfal\fmgsln.exe
    C:\ProgramData\gfal\fmgsln.exe start
    3⤵
    - Executes dropped EXE
    PID:2636
- C:\ProgramData\gfal\fmgsln.exe
  C:\ProgramData\gfal\fmgsln.exe start
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:1656
- - C:\ProgramData\gfal\fmgsln.exe
    C:\ProgramData\gfal\fmgsln.exe start
    3⤵
    - Executes dropped EXE
    PID:1376
- C:\ProgramData\gfal\fmgsln.exe
  C:\ProgramData\gfal\fmgsln.exe start
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:2704
- - C:\ProgramData\gfal\fmgsln.exe
    C:\ProgramData\gfal\fmgsln.exe start
    3⤵
    - Executes dropped EXE
    PID:2740
- C:\ProgramData\gfal\fmgsln.exe
  C:\ProgramData\gfal\fmgsln.exe start
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  PID:1480
- - C:\ProgramData\gfal\fmgsln.exe
    C:\ProgramData\gfal\fmgsln.exe start
    3⤵
    - Executes dropped EXE
    PID:1948
- C:\ProgramData\gfal\fmgsln.exe
  C:\ProgramData\gfal\fmgsln.exe start
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  PID:1612
- - C:\ProgramData\gfal\fmgsln.exe
    C:\ProgramData\gfal\fmgsln.exe start
    3⤵
    - Executes dropped EXE
    PID:1636
- C:\ProgramData\gfal\fmgsln.exe
  C:\ProgramData\gfal\fmgsln.exe start
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  PID:2236
- - C:\ProgramData\gfal\fmgsln.exe
    C:\ProgramData\gfal\fmgsln.exe start
    3⤵
    - Executes dropped EXE
    PID:1992
- C:\ProgramData\gfal\fmgsln.exe
  C:\ProgramData\gfal\fmgsln.exe start
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  PID:1460
- - C:\ProgramData\gfal\fmgsln.exe
    C:\ProgramData\gfal\fmgsln.exe start
    3⤵
    - Executes dropped EXE
    PID:1756
- C:\ProgramData\gfal\fmgsln.exe
  C:\ProgramData\gfal\fmgsln.exe start
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  PID:2924
- - C:\ProgramData\gfal\fmgsln.exe
    C:\ProgramData\gfal\fmgsln.exe start
    3⤵
    - Executes dropped EXE
    PID:892
- C:\ProgramData\gfal\fmgsln.exe
  C:\ProgramData\gfal\fmgsln.exe start
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  PID:3044
- - C:\ProgramData\gfal\fmgsln.exe
    C:\ProgramData\gfal\fmgsln.exe start
    3⤵
    - Executes dropped EXE
    PID:860
- C:\ProgramData\gfal\fmgsln.exe
  C:\ProgramData\gfal\fmgsln.exe start
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  PID:1632
- - C:\ProgramData\gfal\fmgsln.exe
    C:\ProgramData\gfal\fmgsln.exe start
    3⤵
    - Executes dropped EXE
    PID:1624

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

fmgsln.exe

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

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memory/1276-40-0x0000000000DC0000-0x0000000000EC0000-memory.dmp

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memory/1284-2-0x0000000000020000-0x000000000002A000-memory.dmp

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memory/1284-1-0x0000000000DB0000-0x0000000000EB0000-memory.dmp

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memory/1460-214-0x0000000000D20000-0x0000000000E20000-memory.dmp

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memory/1480-127-0x0000000000D60000-0x0000000000E60000-memory.dmp

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memory/1612-156-0x0000000000DF0000-0x0000000000EF0000-memory.dmp

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memory/1632-306-0x00000000002F1000-0x00000000002F7000-memory.dmp

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memory/1656-69-0x0000000000DB0000-0x0000000000EB0000-memory.dmp

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memory/2236-185-0x0000000000D20000-0x0000000000E20000-memory.dmp

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memory/2704-98-0x0000000000D70000-0x0000000000E70000-memory.dmp

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memory/2708-17-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

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memory/2728-18-0x0000000000E00000-0x0000000000F00000-memory.dmp

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memory/2744-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

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memory/2744-5-0x0000000000400000-0x000000000040B000-memory.dmp

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memory/2744-9-0x0000000000400000-0x000000000040B000-memory.dmp

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memory/2744-7-0x0000000000400000-0x000000000040B000-memory.dmp

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memory/2924-243-0x0000000000D00000-0x0000000000E00000-memory.dmp

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memory/3044-272-0x00000000002F0000-0x00000000003F0000-memory.dmp

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