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__	unic.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	coredrive.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	unic.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	unic.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	coredrive.exe

Executes dropped EXE 1 IoCs

pid	Process
2924	unic.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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Wine	coredrive.exe
Key opened	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Wine	unic.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2556	coredrive.exe
2924	unic.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	unic.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2556	coredrive.exe
2924	unic.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2464 wrote to memory of 2924	2464	taskeng.exe	32
PID 2464 wrote to memory of 2924	2464	taskeng.exe	32
PID 2464 wrote to memory of 2924	2464	taskeng.exe	32
PID 2464 wrote to memory of 2924	2464	taskeng.exe	32

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:2556

C:\Windows\system32\taskeng.exe
taskeng.exe {7672AAAE-DBB7-4565-8B9F-5ECEE2F2581D} S-1-5-21-1846800975-3917212583-2893086201-1000:ZQABOPWE\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2464
- C:\ProgramData\bpit\unic.exe
  C:\ProgramData\bpit\unic.exe
  2⤵
  - 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:2924

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\bpit\unic.exe

Filesize
1.6MB

MD5
c6a399eb155322a8cbf1390c118553cb

SHA1
c59b0aa34638e8991358520e29625bb7fb4e3b6b

SHA256
a7c8390922ecfe4e4be4c9ffff567e91298a8bbf96dc96318305f45ec59f5221

SHA512
6437b6ea8990130f8e69b113f6ec8310e8831a80a2cf7ef1d8d16b323729a89c4a00a8900030e77f5671a7a40971e519731ec22519d98d7af29577dcb5dfe44e

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

Filesize
212B

MD5
31e587f578317e6817571197119cd22a

SHA1
b71bdcecb9bf97869db76f79c9f09f084de86105

SHA256
37b2e47ce05ad0bc4768dc0a75165c17a906a6933ec7db9ba72be93cd6dc1860

SHA512
2fa407014b3ac23049d7bc5dd05b1145025b4e17dd35ec06d5b6aee37e4f926deb2ae1b5d937c6ac2499eabeea8c7115e17c8d0a868702586033916cd58963e6

Download Submit
memory/2556-19-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/2556-4-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/2556-6-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/2556-7-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/2556-8-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/2556-9-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/2556-10-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/2556-11-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/2556-12-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/2556-2-0x0000000000401000-0x0000000000403000-memory.dmp

Filesize
8KB

Download
memory/2556-27-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/2556-1-0x0000000077110000-0x0000000077112000-memory.dmp

Filesize
8KB

Download
memory/2556-0-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/2924-21-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/2924-29-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/2924-18-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/2924-23-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/2924-22-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/2924-20-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/2924-24-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/2924-15-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/2924-28-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/2924-16-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/2924-30-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/2924-31-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/2924-32-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/2924-33-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/2924-34-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/2924-35-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/2924-36-0x0000000000400000-0x0000000000823000-memory.dmp

Filesize
4.1MB

Download
memory/2924-37-0x0000000000400000-0x0000000000823000-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