systembc | b1663d4497ddd27a59f090b72adcedddac51724a1c126f7d6469f8045d065e15

General

Target

b1663d4497ddd27a59f090b72adcedddac51724a1c126f7d6469f8045d065e15.exe
Size

452KB
MD5

a9749ee52eefb0fd48a66527095354bb
SHA1

78170bcc54e1f774528dea3118b50ffc46064fe0
SHA256

b1663d4497ddd27a59f090b72adcedddac51724a1c126f7d6469f8045d065e15
SHA512

9d21f0e1e376b89df717403a3939ed86ef61095bb9f0167ff15c01d3bbbee03d4dd01b3e2769ecd921e40e43bab3cbf0a6844ab6f296982227b0cb507b4b0e25
SSDEEP

12288:Rib1rFTRH6serb/p93j6fGMWP1N72h8xp:IH659m+Mk1YW

Score

10^/10

systembc defense_evasion discovery trojan

Malware Config

Extracted

Family

systembc

C2

towerbingobongoboom.com

62.60.226.86

[U��0]�f'�b]M��9"�|

Signatures

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

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	blvijj.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	effectson.exe

Downloads MZ/PE file 1 IoCs

flow	pid	Process
30	2396	Gxtuum.exe

Checks BIOS information in registry 2 TTPs 4 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	effectson.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	blvijj.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	blvijj.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	effectson.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1874072718-2205492803-118941907-1000\Control Panel\International\Geo\Nation	b1663d4497ddd27a59f090b72adcedddac51724a1c126f7d6469f8045d065e15.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1874072718-2205492803-118941907-1000\Control Panel\International\Geo\Nation	Gxtuum.exe

Executes dropped EXE 5 IoCs

pid	Process
2396	Gxtuum.exe
3044	effectson.exe
1684	blvijj.exe
1448	Gxtuum.exe
4924	Gxtuum.exe

Identifies Wine through registry keys 2 TTPs 2 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1874072718-2205492803-118941907-1000\Software\Wine	effectson.exe
Key opened	\REGISTRY\USER\S-1-5-21-1874072718-2205492803-118941907-1000\Software\Wine	blvijj.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
3044	effectson.exe
1684	blvijj.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\Gxtuum.job	b1663d4497ddd27a59f090b72adcedddac51724a1c126f7d6469f8045d065e15.exe
File created	C:\Windows\Tasks\Test Task17.job	effectson.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 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	b1663d4497ddd27a59f090b72adcedddac51724a1c126f7d6469f8045d065e15.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Gxtuum.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	effectson.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	blvijj.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3044	effectson.exe
3044	effectson.exe
1684	blvijj.exe
1684	blvijj.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2352	b1663d4497ddd27a59f090b72adcedddac51724a1c126f7d6469f8045d065e15.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2352 wrote to memory of 2396	2352	b1663d4497ddd27a59f090b72adcedddac51724a1c126f7d6469f8045d065e15.exe	89
PID 2352 wrote to memory of 2396	2352	b1663d4497ddd27a59f090b72adcedddac51724a1c126f7d6469f8045d065e15.exe	89
PID 2352 wrote to memory of 2396	2352	b1663d4497ddd27a59f090b72adcedddac51724a1c126f7d6469f8045d065e15.exe	89
PID 2396 wrote to memory of 3044	2396	Gxtuum.exe	95
PID 2396 wrote to memory of 3044	2396	Gxtuum.exe	95
PID 2396 wrote to memory of 3044	2396	Gxtuum.exe	95

C:\Users\Admin\AppData\Local\Temp\b1663d4497ddd27a59f090b72adcedddac51724a1c126f7d6469f8045d065e15.exe
"C:\Users\Admin\AppData\Local\Temp\b1663d4497ddd27a59f090b72adcedddac51724a1c126f7d6469f8045d065e15.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:2352
- C:\Users\Admin\AppData\Local\Temp\a58456755d\Gxtuum.exe
  "C:\Users\Admin\AppData\Local\Temp\a58456755d\Gxtuum.exe"
  2⤵
  - Downloads MZ/PE file
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2396
- - C:\Users\Admin\AppData\Roaming\10000790100\effectson.exe
    "C:\Users\Admin\AppData\Roaming\10000790100\effectson.exe"
    3⤵
    - Identifies VirtualBox via ACPI registry values (likely anti-VM)
    - Checks BIOS information in registry
    - Executes dropped EXE
    - Identifies Wine through registry keys
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:3044

C:\ProgramData\npwrh\blvijj.exe
C:\ProgramData\npwrh\blvijj.exe
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:1684

C:\Users\Admin\AppData\Local\Temp\a58456755d\Gxtuum.exe
C:\Users\Admin\AppData\Local\Temp\a58456755d\Gxtuum.exe
1⤵
- Executes dropped EXE
PID:1448

C:\Users\Admin\AppData\Local\Temp\a58456755d\Gxtuum.exe
C:\Users\Admin\AppData\Local\Temp\a58456755d\Gxtuum.exe
1⤵
- Executes dropped EXE
PID:4924

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Query Registry

4

T1012

System Information Discovery

3

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\a58456755d\Gxtuum.exe

Filesize
452KB

MD5
a9749ee52eefb0fd48a66527095354bb

SHA1
78170bcc54e1f774528dea3118b50ffc46064fe0

SHA256
b1663d4497ddd27a59f090b72adcedddac51724a1c126f7d6469f8045d065e15

SHA512
9d21f0e1e376b89df717403a3939ed86ef61095bb9f0167ff15c01d3bbbee03d4dd01b3e2769ecd921e40e43bab3cbf0a6844ab6f296982227b0cb507b4b0e25

Download Submit
C:\Users\Admin\AppData\Roaming\10000790100\effectson.exe

Filesize
1.7MB

MD5
3b4723591e7a82dc45cdd60b2162eee2

SHA1
9618f544c79dbae11634fc14bd472b3cb5eb046d

SHA256
1582d61232dff45c014769e9be4fb06f839ee3e462189dbbf28ca0380a6fa410

SHA512
1559f42a1dbdf1f78f971415f3252a1127ebd2f3490a374a13670fc366b54f50c58bac8234d30a43b3345fbecdf49f65b69500675887c81fa45bc06311917380

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

Filesize
236B

MD5
60dbed135477d869047058a54d877f1c

SHA1
f32ef2f709150d6dba026f42d027920dd5589d0e

SHA256
897d8312a8e9ff943c57d5fcf0118c581513ac8e4d986c4c7c3c23d810b11299

SHA512
35623c9aba7280c7469bcba7aa250f7860810214558887ffae6c469f8cef1f477350d37bfbb982ffe9759bd700ff96312cc1797c23f7111c80477fdc04cb535a

Download Submit
memory/1684-53-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/1684-55-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/1684-54-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/1684-44-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/1684-56-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/1684-51-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/1684-50-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/1684-49-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/1684-46-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/1684-39-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/1684-57-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/1684-43-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/3044-32-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/3044-42-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/3044-45-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/3044-36-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/3044-47-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/3044-48-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/3044-35-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/3044-34-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/3044-33-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/3044-31-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/3044-28-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/3044-27-0x0000000000401000-0x0000000000403000-memory.dmp

Filesize
8KB

Download
memory/3044-26-0x0000000077AE4000-0x0000000077AE6000-memory.dmp

Filesize
8KB

Download
memory/3044-25-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads