systembc | c539384c0034cc40b226df8cf1354eb264c0e48e722fdd44205ce6783122dba8

General

Target

c539384c0034cc40b226df8cf1354eb264c0e48e722fdd44205ce6783122dba8.exe
Size

1.7MB
MD5

e2df3d65784e6202d297bec31d1dfaa1
SHA1

a74be156066f49f56bd5835e35210591b7010634
SHA256

c539384c0034cc40b226df8cf1354eb264c0e48e722fdd44205ce6783122dba8
SHA512

3e311421b7bd8db2ed11fa3bd6406d96a6506b96c54dcf8ab0ea5b95d208dbb124e3372a7be39e42f25f2c2cf59a35888d489c2a107377b831c470bde8f35dfc
SSDEEP

49152:BGZgyO3gUhNuZ+gw5N2W4FCcDK5juYWwb4EOpRpOm:Qw3gCNTph4rwq+

Score

10^/10

systembc defense_evasion discovery trojan

Malware Config

Extracted

Family

systembc

C2

wodresomdaymomentum.org

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__	c539384c0034cc40b226df8cf1354eb264c0e48e722fdd44205ce6783122dba8.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	qruckdg.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	c539384c0034cc40b226df8cf1354eb264c0e48e722fdd44205ce6783122dba8.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	c539384c0034cc40b226df8cf1354eb264c0e48e722fdd44205ce6783122dba8.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	qruckdg.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	qruckdg.exe

Executes dropped EXE 1 IoCs

pid	Process
2728	qruckdg.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-1-5-21-3692679935-4019334568-335155002-1000\Software\Wine	c539384c0034cc40b226df8cf1354eb264c0e48e722fdd44205ce6783122dba8.exe
Key opened	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Wine	qruckdg.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2856	c539384c0034cc40b226df8cf1354eb264c0e48e722fdd44205ce6783122dba8.exe
2728	qruckdg.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\Test Task17.job	c539384c0034cc40b226df8cf1354eb264c0e48e722fdd44205ce6783122dba8.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	c539384c0034cc40b226df8cf1354eb264c0e48e722fdd44205ce6783122dba8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	qruckdg.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2856	c539384c0034cc40b226df8cf1354eb264c0e48e722fdd44205ce6783122dba8.exe
2728	qruckdg.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2748 wrote to memory of 2728	2748	taskeng.exe	31
PID 2748 wrote to memory of 2728	2748	taskeng.exe	31
PID 2748 wrote to memory of 2728	2748	taskeng.exe	31
PID 2748 wrote to memory of 2728	2748	taskeng.exe	31

C:\Users\Admin\AppData\Local\Temp\c539384c0034cc40b226df8cf1354eb264c0e48e722fdd44205ce6783122dba8.exe
"C:\Users\Admin\AppData\Local\Temp\c539384c0034cc40b226df8cf1354eb264c0e48e722fdd44205ce6783122dba8.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:2856

C:\Windows\system32\taskeng.exe
taskeng.exe {152F60B9-64F5-4EA8-B84C-83B5BA62638A} S-1-5-21-3692679935-4019334568-335155002-1000:BCXRJFKE\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2748
- C:\ProgramData\eorxg\qruckdg.exe
  C:\ProgramData\eorxg\qruckdg.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:2728

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\eorxg\qruckdg.exe

Filesize
1.7MB

MD5
e2df3d65784e6202d297bec31d1dfaa1

SHA1
a74be156066f49f56bd5835e35210591b7010634

SHA256
c539384c0034cc40b226df8cf1354eb264c0e48e722fdd44205ce6783122dba8

SHA512
3e311421b7bd8db2ed11fa3bd6406d96a6506b96c54dcf8ab0ea5b95d208dbb124e3372a7be39e42f25f2c2cf59a35888d489c2a107377b831c470bde8f35dfc

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

Filesize
220B

MD5
b499ab9d69482f6f4b574fb6962c187d

SHA1
f3f8dfff9d132503481987bdc56a8511e2d98471

SHA256
f77aa3882c5b50fe63ba804cca6f882423f55437ff990243695e522a8ff263e1

SHA512
4b484b77fb723416324d5bb6499f7a3a09f1f32068878990629b484a7e21bc45892f4ef19c58f804f46df424a6ddf1ed5c77ee2dee29038d8839f5f30ccef14a

Download Submit
memory/2728-32-0x0000000000400000-0x0000000000843000-memory.dmp

Filesize
4.3MB

Download
memory/2728-14-0x0000000000400000-0x0000000000843000-memory.dmp

Filesize
4.3MB

Download
memory/2728-33-0x0000000000400000-0x0000000000843000-memory.dmp

Filesize
4.3MB

Download
memory/2728-24-0x0000000000400000-0x0000000000843000-memory.dmp

Filesize
4.3MB

Download
memory/2728-31-0x0000000000400000-0x0000000000843000-memory.dmp

Filesize
4.3MB

Download
memory/2728-30-0x0000000000400000-0x0000000000843000-memory.dmp

Filesize
4.3MB

Download
memory/2728-29-0x0000000000400000-0x0000000000843000-memory.dmp

Filesize
4.3MB

Download
memory/2728-28-0x0000000000400000-0x0000000000843000-memory.dmp

Filesize
4.3MB

Download
memory/2728-35-0x0000000000400000-0x0000000000843000-memory.dmp

Filesize
4.3MB

Download
memory/2728-34-0x0000000000400000-0x0000000000843000-memory.dmp

Filesize
4.3MB

Download
memory/2728-15-0x0000000000400000-0x0000000000843000-memory.dmp

Filesize
4.3MB

Download
memory/2728-36-0x0000000000400000-0x0000000000843000-memory.dmp

Filesize
4.3MB

Download
memory/2728-17-0x0000000000400000-0x0000000000843000-memory.dmp

Filesize
4.3MB

Download
memory/2728-26-0x0000000000400000-0x0000000000843000-memory.dmp

Filesize
4.3MB

Download
memory/2728-19-0x0000000000400000-0x0000000000843000-memory.dmp

Filesize
4.3MB

Download
memory/2728-21-0x0000000000400000-0x0000000000843000-memory.dmp

Filesize
4.3MB

Download
memory/2728-20-0x0000000000400000-0x0000000000843000-memory.dmp

Filesize
4.3MB

Download
memory/2728-22-0x0000000000400000-0x0000000000843000-memory.dmp

Filesize
4.3MB

Download
memory/2856-10-0x0000000000400000-0x0000000000843000-memory.dmp

Filesize
4.3MB

Download
memory/2856-23-0x0000000000400000-0x0000000000843000-memory.dmp

Filesize
4.3MB

Download
memory/2856-25-0x0000000000400000-0x0000000000843000-memory.dmp

Filesize
4.3MB

Download
memory/2856-18-0x0000000000400000-0x0000000000843000-memory.dmp

Filesize
4.3MB

Download
memory/2856-27-0x0000000000400000-0x0000000000843000-memory.dmp

Filesize
4.3MB

Download
memory/2856-11-0x0000000000400000-0x0000000000843000-memory.dmp

Filesize
4.3MB

Download
memory/2856-0-0x0000000000400000-0x0000000000843000-memory.dmp

Filesize
4.3MB

Download
memory/2856-9-0x0000000000400000-0x0000000000843000-memory.dmp

Filesize
4.3MB

Download
memory/2856-8-0x0000000000400000-0x0000000000843000-memory.dmp

Filesize
4.3MB

Download
memory/2856-7-0x0000000000400000-0x0000000000843000-memory.dmp

Filesize
4.3MB

Download
memory/2856-6-0x0000000000400000-0x0000000000843000-memory.dmp

Filesize
4.3MB

Download
memory/2856-4-0x0000000000400000-0x0000000000843000-memory.dmp

Filesize
4.3MB

Download
memory/2856-2-0x0000000000401000-0x0000000000403000-memory.dmp

Filesize
8KB

Download
memory/2856-1-0x0000000077D20000-0x0000000077D22000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads