systembc | a7c8390922ecfe4e4be4c9ffff567e91298a8bbf96dc96318305f45ec59f5221

General

Target

coredrive.exe
Size

1.6MB
MD5

c6a399eb155322a8cbf1390c118553cb
SHA1

c59b0aa34638e8991358520e29625bb7fb4e3b6b
SHA256

a7c8390922ecfe4e4be4c9ffff567e91298a8bbf96dc96318305f45ec59f5221
SHA512

6437b6ea8990130f8e69b113f6ec8310e8831a80a2cf7ef1d8d16b323729a89c4a00a8900030e77f5671a7a40971e519731ec22519d98d7af29577dcb5dfe44e
SSDEEP

49152:R1aqCQ3KKia9icS8P80nPIIXQocVHmir6QmEGmNyRzs3X:R1aA37ia9iJ800QIXQocVHoEGV

Score

10^/10

systembc defense_evasion discovery trojan

Malware Config

Extracted

Family

systembc

C2

towerbingobongoboom.com

62.60.226.86

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__	coredrive.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	ivvi.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\SystemBiosVersion	coredrive.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	coredrive.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	ivvi.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	ivvi.exe

Executes dropped EXE 1 IoCs

pid	Process
4588	ivvi.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-1-5-21-1408376509-1621642251-2666462513-1000\Software\Wine	coredrive.exe
Key opened	\REGISTRY\USER\S-1-5-21-1408376509-1621642251-2666462513-1000\Software\Wine	ivvi.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
4068	coredrive.exe
4588	ivvi.exe

Drops file in Windows directory 1 IoCs

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

System Location Discovery: System Language Discovery 1 TTPs 2 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	coredrive.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ivvi.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4068	coredrive.exe
4068	coredrive.exe
4588	ivvi.exe
4588	ivvi.exe

C:\Users\Admin\AppData\Local\Temp\coredrive.exe
"C:\Users\Admin\AppData\Local\Temp\coredrive.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:4068

C:\ProgramData\tcmxfil\ivvi.exe
C:\ProgramData\tcmxfil\ivvi.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:4588

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

3

T1012

System Information Discovery

1

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

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Downloads

C:\ProgramData\tcmxfil\ivvi.exe

Filesize
1.6MB

MD5
c6a399eb155322a8cbf1390c118553cb

SHA1
c59b0aa34638e8991358520e29625bb7fb4e3b6b

SHA256
a7c8390922ecfe4e4be4c9ffff567e91298a8bbf96dc96318305f45ec59f5221

SHA512
6437b6ea8990130f8e69b113f6ec8310e8831a80a2cf7ef1d8d16b323729a89c4a00a8900030e77f5671a7a40971e519731ec22519d98d7af29577dcb5dfe44e

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

Filesize
236B

MD5
8ff7f0ac98bbc5a28e0836bdea512bb1

SHA1
4f85309d5493f7ec323525e374d1e06f72161be1

SHA256
3d370057d48a7ff15ffe4bfb4092c795d39d8a124b52af3d6ffee0ce41704cdb

SHA512
91728ad63910d6bcc68854983920df86c2c16b84aa90cdf7b92863d9d2e4ce187ae08d0c33eba9d7da47a427a364dd64ec3b9f532cb6cb97ff2b52601071a6c9

Download Submit
memory/4068-13-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/4068-15-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/4068-1-0x00000000770D6000-0x00000000770D8000-memory.dmp

Filesize
8KB

Download
memory/4068-29-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/4068-9-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/4068-2-0x0000000000401000-0x0000000000403000-memory.dmp

Filesize
8KB

Download
memory/4068-3-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/4068-20-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/4068-28-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/4068-14-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/4068-26-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/4068-16-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/4068-24-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/4068-22-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/4068-0-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/4588-21-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/4588-8-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/4588-18-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/4588-23-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/4588-17-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/4588-25-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/4588-11-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/4588-27-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/4588-10-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/4588-19-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/4588-30-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/4588-31-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/4588-32-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/4588-33-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/4588-34-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/4588-35-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/4588-36-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/4588-37-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/4588-38-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads