systembc | 92f5e87abf9c56629ea18d38fd358c554842492ed2dd927f5da116312bb341e0

Analysis

max time kernel
141s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
16-12-2024 12:54

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General

Target

BlueMail.exe
Size

1006KB
MD5

0630c2c8a8c85dca0b36513ad79967e8
SHA1

9dafbb4ef4c4ecbd78aa9f4c8f0260a8aba2baf4
SHA256

341082f1ded57c304632b7607119183bb78ba76e1b492f3e4a706fd83c1bc13d
SHA512

2e200220d5b8ab644274af62de19b36c502ca8c6e9a450e2ac61c8f5cce20a45d73200d4d8f45b1b45a4b3a645c103a61110d5f4273783f06ccabe6f1c407350
SSDEEP

24576:W0RHvPoU6t/Wn5z09zDxeXTMT9m2OyzUYc:lHvB+QmzoIZ3Bw

Score

10^/10

systembc discovery trojan

Malware Config

Extracted

Family

systembc

wodresomdaymomentum.org

Attributes

dns
5.132.191.104

Signatures

Suspicious use of NtCreateUserProcessOtherParentProcess 2 IoCs

description	pid	Process	procid_target
PID 4564 created 3472	4564	BlueMail.exe	56
PID 4572 created 3472	4572	mprn.exe	56

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

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\vminfol.vbs	BlueMail.exe

Executes dropped EXE 3 IoCs

pid	Process
4572	mprn.exe
2232	mprn.exe
1808	mprn.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4564 set thread context of 224	4564	BlueMail.exe	97
PID 4572 set thread context of 2232	4572	mprn.exe	102

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\Test Task17.job	BlueMail.exe

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	BlueMail.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	BlueMail.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mprn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mprn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mprn.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4564	BlueMail.exe
4572	mprn.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	4564	BlueMail.exe
Token: SeDebugPrivilege	4564	BlueMail.exe
Token: SeDebugPrivilege	4572	mprn.exe
Token: SeDebugPrivilege	4572	mprn.exe
Token: SeDebugPrivilege	1808	mprn.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 4564 wrote to memory of 224	4564	BlueMail.exe	97
PID 4564 wrote to memory of 224	4564	BlueMail.exe	97
PID 4564 wrote to memory of 224	4564	BlueMail.exe	97
PID 4564 wrote to memory of 224	4564	BlueMail.exe	97
PID 4564 wrote to memory of 224	4564	BlueMail.exe	97
PID 4564 wrote to memory of 224	4564	BlueMail.exe	97
PID 4564 wrote to memory of 224	4564	BlueMail.exe	97
PID 4564 wrote to memory of 224	4564	BlueMail.exe	97
PID 4572 wrote to memory of 2232	4572	mprn.exe	102
PID 4572 wrote to memory of 2232	4572	mprn.exe	102
PID 4572 wrote to memory of 2232	4572	mprn.exe	102
PID 4572 wrote to memory of 2232	4572	mprn.exe	102
PID 4572 wrote to memory of 2232	4572	mprn.exe	102
PID 4572 wrote to memory of 2232	4572	mprn.exe	102
PID 4572 wrote to memory of 2232	4572	mprn.exe	102
PID 4572 wrote to memory of 2232	4572	mprn.exe	102

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3472
- C:\Users\Admin\AppData\Local\Temp\BlueMail.exe
  "C:\Users\Admin\AppData\Local\Temp\BlueMail.exe"
  2⤵
  - Suspicious use of NtCreateUserProcessOtherParentProcess
  - Drops startup file
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4564
- C:\Users\Admin\AppData\Local\Temp\BlueMail.exe
  "C:\Users\Admin\AppData\Local\Temp\BlueMail.exe"
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  PID:224
- C:\ProgramData\tdnb\mprn.exe
  "C:\ProgramData\tdnb\mprn.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2232

C:\ProgramData\tdnb\mprn.exe
C:\ProgramData\tdnb\mprn.exe
1⤵
- Suspicious use of NtCreateUserProcessOtherParentProcess
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4572

C:\ProgramData\tdnb\mprn.exe
C:\ProgramData\tdnb\mprn.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:1808

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\tdnb\mprn.exe

Filesize
1006KB

MD5
0630c2c8a8c85dca0b36513ad79967e8

SHA1
9dafbb4ef4c4ecbd78aa9f4c8f0260a8aba2baf4

SHA256
341082f1ded57c304632b7607119183bb78ba76e1b492f3e4a706fd83c1bc13d

SHA512
2e200220d5b8ab644274af62de19b36c502ca8c6e9a450e2ac61c8f5cce20a45d73200d4d8f45b1b45a4b3a645c103a61110d5f4273783f06ccabe6f1c407350

Download Submit
C:\Windows\Tasks\Test Task17.job

Filesize
230B

MD5
9c3a020cd6040a7142d06b09ee308a40

SHA1
bff15e7965a1b38d8d8a8d71ffed0a548977c959

SHA256
b1821c7d2bced73cc6815a128ad7fa0cbacf4791a1a481cd1c87de79db19c7eb

SHA512
76b49a0d59219e2e3fd785f49db511234761d41b0c17807e45ba01aa56d86022bddc011f2518a6953dc9ed5fd1a2d66eb586a3dcb0bea5767c4f4f9faa3a278b

Download Submit
memory/224-1205-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/2232-2405-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/4564-0-0x000000007461E000-0x000000007461F000-memory.dmp

Filesize
4KB

Download
memory/4564-1-0x0000000000B80000-0x0000000000C7A000-memory.dmp

Filesize
1000KB

Download
memory/4564-2-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/4564-3-0x00000000054E0000-0x00000000055C6000-memory.dmp

Filesize
920KB

Download
memory/4564-4-0x0000000005640000-0x0000000005728000-memory.dmp

Filesize
928KB

Download
memory/4564-16-0x0000000005640000-0x0000000005721000-memory.dmp

Filesize
900KB

Download
memory/4564-14-0x0000000005640000-0x0000000005721000-memory.dmp

Filesize
900KB

Download
memory/4564-68-0x0000000005640000-0x0000000005721000-memory.dmp

Filesize
900KB

Download
memory/4564-66-0x0000000005640000-0x0000000005721000-memory.dmp

Filesize
900KB

Download
memory/4564-64-0x0000000005640000-0x0000000005721000-memory.dmp

Filesize
900KB

Download
memory/4564-62-0x0000000005640000-0x0000000005721000-memory.dmp

Filesize
900KB

Download
memory/4564-60-0x0000000005640000-0x0000000005721000-memory.dmp

Filesize
900KB

Download
memory/4564-58-0x0000000005640000-0x0000000005721000-memory.dmp

Filesize
900KB

Download
memory/4564-56-0x0000000005640000-0x0000000005721000-memory.dmp

Filesize
900KB

Download
memory/4564-54-0x0000000005640000-0x0000000005721000-memory.dmp

Filesize
900KB

Download
memory/4564-52-0x0000000005640000-0x0000000005721000-memory.dmp

Filesize
900KB

Download
memory/4564-50-0x0000000005640000-0x0000000005721000-memory.dmp

Filesize
900KB

Download
memory/4564-46-0x0000000005640000-0x0000000005721000-memory.dmp

Filesize
900KB

Download
memory/4564-44-0x0000000005640000-0x0000000005721000-memory.dmp

Filesize
900KB

Download
memory/4564-42-0x0000000005640000-0x0000000005721000-memory.dmp

Filesize
900KB

Download
memory/4564-40-0x0000000005640000-0x0000000005721000-memory.dmp

Filesize
900KB

Download
memory/4564-38-0x0000000005640000-0x0000000005721000-memory.dmp

Filesize
900KB

Download
memory/4564-37-0x0000000005640000-0x0000000005721000-memory.dmp

Filesize
900KB

Download
memory/4564-34-0x0000000005640000-0x0000000005721000-memory.dmp

Filesize
900KB

Download
memory/4564-30-0x0000000005640000-0x0000000005721000-memory.dmp

Filesize
900KB

Download
memory/4564-28-0x0000000005640000-0x0000000005721000-memory.dmp

Filesize
900KB

Download
memory/4564-26-0x0000000005640000-0x0000000005721000-memory.dmp

Filesize
900KB

Download
memory/4564-24-0x0000000005640000-0x0000000005721000-memory.dmp

Filesize
900KB

Download
memory/4564-22-0x0000000005640000-0x0000000005721000-memory.dmp

Filesize
900KB

Download
memory/4564-20-0x0000000005640000-0x0000000005721000-memory.dmp

Filesize
900KB

Download
memory/4564-12-0x0000000005640000-0x0000000005721000-memory.dmp

Filesize
900KB

Download
memory/4564-10-0x0000000005640000-0x0000000005721000-memory.dmp

Filesize
900KB

Download
memory/4564-8-0x0000000005640000-0x0000000005721000-memory.dmp

Filesize
900KB

Download
memory/4564-6-0x0000000005640000-0x0000000005721000-memory.dmp

Filesize
900KB

Download
memory/4564-48-0x0000000005640000-0x0000000005721000-memory.dmp

Filesize
900KB

Download
memory/4564-32-0x0000000005640000-0x0000000005721000-memory.dmp

Filesize
900KB

Download
memory/4564-18-0x0000000005640000-0x0000000005721000-memory.dmp

Filesize
900KB

Download
memory/4564-5-0x0000000005640000-0x0000000005721000-memory.dmp

Filesize
900KB

Download
memory/4564-1181-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/4564-1182-0x0000000005880000-0x00000000058D8000-memory.dmp

Filesize
352KB

Download
memory/4564-1183-0x0000000005940000-0x000000000598C000-memory.dmp

Filesize
304KB

Download
memory/4564-1184-0x000000007461E000-0x000000007461F000-memory.dmp

Filesize
4KB

Download
memory/4564-1185-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/4564-1186-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/4564-1187-0x00000000062E0000-0x0000000006884000-memory.dmp

Filesize
5.6MB

Download
memory/4564-1188-0x0000000005780000-0x00000000057D4000-memory.dmp

Filesize
336KB

Download
memory/4564-1194-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/4564-1196-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/4564-1204-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/4564-1203-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/4572-1208-0x000000007461E000-0x000000007461F000-memory.dmp

Filesize
4KB

Download
memory/4572-1209-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/4572-2386-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/4572-2388-0x000000007461E000-0x000000007461F000-memory.dmp

Filesize
4KB

Download
memory/4572-2389-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/4572-2390-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/4572-2396-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/4572-2404-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/4572-2403-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download