systembc | 21aaa5319a6729df0581203a0782ead837b848387e44cd1844ca8e19882a50af

Analysis

max time kernel
147s
max time network
151s
platform
windows11-21h2_x64
resource
win11-20241007-en
resource tags

arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
submitted
30-11-2024 01:25

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General

Target

Ewpeloxttug.exe
Size

2.2MB
MD5

23c8cb1226c61a164d7518218c837b81
SHA1

45ea74832e487bacb788189c04661b29a71e86b5
SHA256

21aaa5319a6729df0581203a0782ead837b848387e44cd1844ca8e19882a50af
SHA512

8e219108c05966ec8ee6bc2ce2fb40c4aedce6614e65970c356e4f840e88720188c762aaa4451c2f5f1fa1bbc14136ecbcd1f4c9f3b1a5fccc0ab053a37bcc21
SSDEEP

24576:wqDdns3FYYhWxL3rc/+rhm+qx6GuQ5qGPVmTy9xMNWgJ/AICqQ9pEsePeHMSPs2f:1iD

Score

10^/10

systembc discovery trojan

Malware Config

Extracted

Family

systembc

claywyaeropumps.com

178.132.2.10

Attributes

dns
5.132.191.104

Signatures

Suspicious use of NtCreateUserProcessOtherParentProcess 3 IoCs

description	pid	Process	procid_target
PID 2480 created 3264	2480	Ewpeloxttug.exe	53
PID 3220 created 3264	3220	gddf.exe	53
PID 2040 created 3264	2040	gddf.exe	53

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\DriverUtil.vbs	Ewpeloxttug.exe

Executes dropped EXE 4 IoCs

pid	Process
3220	gddf.exe
3532	gddf.exe
2040	gddf.exe
2932	gddf.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2480 set thread context of 4976	2480	Ewpeloxttug.exe	78
PID 3220 set thread context of 3532	3220	gddf.exe	80
PID 2040 set thread context of 2932	2040	gddf.exe	82

Drops file in Windows directory 1 IoCs

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

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2480	Ewpeloxttug.exe
3220	gddf.exe
2040	gddf.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2480	Ewpeloxttug.exe
Token: SeDebugPrivilege	2480	Ewpeloxttug.exe
Token: SeDebugPrivilege	3220	gddf.exe
Token: SeDebugPrivilege	3220	gddf.exe
Token: SeDebugPrivilege	2040	gddf.exe
Token: SeDebugPrivilege	2040	gddf.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2480 wrote to memory of 4976	2480	Ewpeloxttug.exe	78
PID 2480 wrote to memory of 4976	2480	Ewpeloxttug.exe	78
PID 2480 wrote to memory of 4976	2480	Ewpeloxttug.exe	78
PID 2480 wrote to memory of 4976	2480	Ewpeloxttug.exe	78
PID 2480 wrote to memory of 4976	2480	Ewpeloxttug.exe	78
PID 2480 wrote to memory of 4976	2480	Ewpeloxttug.exe	78
PID 2480 wrote to memory of 4976	2480	Ewpeloxttug.exe	78
PID 2480 wrote to memory of 4976	2480	Ewpeloxttug.exe	78
PID 3220 wrote to memory of 3532	3220	gddf.exe	80
PID 3220 wrote to memory of 3532	3220	gddf.exe	80
PID 3220 wrote to memory of 3532	3220	gddf.exe	80
PID 3220 wrote to memory of 3532	3220	gddf.exe	80
PID 3220 wrote to memory of 3532	3220	gddf.exe	80
PID 3220 wrote to memory of 3532	3220	gddf.exe	80
PID 3220 wrote to memory of 3532	3220	gddf.exe	80
PID 3220 wrote to memory of 3532	3220	gddf.exe	80
PID 2040 wrote to memory of 2932	2040	gddf.exe	82
PID 2040 wrote to memory of 2932	2040	gddf.exe	82
PID 2040 wrote to memory of 2932	2040	gddf.exe	82
PID 2040 wrote to memory of 2932	2040	gddf.exe	82
PID 2040 wrote to memory of 2932	2040	gddf.exe	82
PID 2040 wrote to memory of 2932	2040	gddf.exe	82
PID 2040 wrote to memory of 2932	2040	gddf.exe	82
PID 2040 wrote to memory of 2932	2040	gddf.exe	82

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3264
- C:\Users\Admin\AppData\Local\Temp\Ewpeloxttug.exe
  "C:\Users\Admin\AppData\Local\Temp\Ewpeloxttug.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:2480
- C:\Users\Admin\AppData\Local\Temp\Ewpeloxttug.exe
  "C:\Users\Admin\AppData\Local\Temp\Ewpeloxttug.exe"
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  PID:4976
- C:\ProgramData\eavtt\gddf.exe
  "C:\ProgramData\eavtt\gddf.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:3532
- C:\ProgramData\eavtt\gddf.exe
  "C:\ProgramData\eavtt\gddf.exe"
  2⤵
  - Executes dropped EXE
  PID:2932

C:\ProgramData\eavtt\gddf.exe
C:\ProgramData\eavtt\gddf.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:3220

C:\ProgramData\eavtt\gddf.exe
C:\ProgramData\eavtt\gddf.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:2040

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\eavtt\gddf.exe

Filesize
2.2MB

MD5
23c8cb1226c61a164d7518218c837b81

SHA1
45ea74832e487bacb788189c04661b29a71e86b5

SHA256
21aaa5319a6729df0581203a0782ead837b848387e44cd1844ca8e19882a50af

SHA512
8e219108c05966ec8ee6bc2ce2fb40c4aedce6614e65970c356e4f840e88720188c762aaa4451c2f5f1fa1bbc14136ecbcd1f4c9f3b1a5fccc0ab053a37bcc21

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

Filesize
232B

MD5
43030dc35b3b14135b670f9efc6a8383

SHA1
38ccbb209993231b374ae19ca6fd49e2eefb7837

SHA256
40d3519d2b4e7ef39e1e8bcc56c8d17e178f85e57a380728ed297dd8427c4cc5

SHA512
f756e6a79f16f5d01cd552a67fc53ae5f43cccff724eff86b93ce8d1c32a3169ba0ffb374c64b384ce3262a9ae647df1561166f030ce1e951332fb6712c9c9f4

Download Submit
memory/2480-0-0x000000007459E000-0x000000007459F000-memory.dmp

Filesize
4KB

Download
memory/2480-1-0x0000000000D70000-0x0000000000FA6000-memory.dmp

Filesize
2.2MB

Download
memory/2480-2-0x0000000005B90000-0x0000000005C6C000-memory.dmp

Filesize
880KB

Download
memory/2480-8-0x0000000005B90000-0x0000000005C67000-memory.dmp

Filesize
860KB

Download
memory/2480-12-0x0000000005B90000-0x0000000005C67000-memory.dmp

Filesize
860KB

Download
memory/2480-64-0x0000000005B90000-0x0000000005C67000-memory.dmp

Filesize
860KB

Download
memory/2480-62-0x0000000005B90000-0x0000000005C67000-memory.dmp

Filesize
860KB

Download
memory/2480-60-0x0000000005B90000-0x0000000005C67000-memory.dmp

Filesize
860KB

Download
memory/2480-58-0x0000000005B90000-0x0000000005C67000-memory.dmp

Filesize
860KB

Download
memory/2480-56-0x0000000005B90000-0x0000000005C67000-memory.dmp

Filesize
860KB

Download
memory/2480-52-0x0000000005B90000-0x0000000005C67000-memory.dmp

Filesize
860KB

Download
memory/2480-50-0x0000000005B90000-0x0000000005C67000-memory.dmp

Filesize
860KB

Download
memory/2480-44-0x0000000005B90000-0x0000000005C67000-memory.dmp

Filesize
860KB

Download
memory/2480-42-0x0000000005B90000-0x0000000005C67000-memory.dmp

Filesize
860KB

Download
memory/2480-41-0x0000000005B90000-0x0000000005C67000-memory.dmp

Filesize
860KB

Download
memory/2480-36-0x0000000005B90000-0x0000000005C67000-memory.dmp

Filesize
860KB

Download
memory/2480-34-0x0000000005B90000-0x0000000005C67000-memory.dmp

Filesize
860KB

Download
memory/2480-32-0x0000000005B90000-0x0000000005C67000-memory.dmp

Filesize
860KB

Download
memory/2480-28-0x0000000005B90000-0x0000000005C67000-memory.dmp

Filesize
860KB

Download
memory/2480-24-0x0000000005B90000-0x0000000005C67000-memory.dmp

Filesize
860KB

Download
memory/2480-22-0x0000000005B90000-0x0000000005C67000-memory.dmp

Filesize
860KB

Download
memory/2480-20-0x0000000005B90000-0x0000000005C67000-memory.dmp

Filesize
860KB

Download
memory/2480-18-0x0000000005B90000-0x0000000005C67000-memory.dmp

Filesize
860KB

Download
memory/2480-16-0x0000000005B90000-0x0000000005C67000-memory.dmp

Filesize
860KB

Download
memory/2480-10-0x0000000005B90000-0x0000000005C67000-memory.dmp

Filesize
860KB

Download
memory/2480-66-0x0000000005B90000-0x0000000005C67000-memory.dmp

Filesize
860KB

Download
memory/2480-54-0x0000000005B90000-0x0000000005C67000-memory.dmp

Filesize
860KB

Download
memory/2480-48-0x0000000005B90000-0x0000000005C67000-memory.dmp

Filesize
860KB

Download
memory/2480-46-0x0000000005B90000-0x0000000005C67000-memory.dmp

Filesize
860KB

Download
memory/2480-6-0x0000000005B90000-0x0000000005C67000-memory.dmp

Filesize
860KB

Download
memory/2480-38-0x0000000005B90000-0x0000000005C67000-memory.dmp

Filesize
860KB

Download
memory/2480-31-0x0000000005B90000-0x0000000005C67000-memory.dmp

Filesize
860KB

Download
memory/2480-26-0x0000000005B90000-0x0000000005C67000-memory.dmp

Filesize
860KB

Download
memory/2480-4-0x0000000005B90000-0x0000000005C67000-memory.dmp

Filesize
860KB

Download
memory/2480-14-0x0000000005B90000-0x0000000005C67000-memory.dmp

Filesize
860KB

Download
memory/2480-3-0x0000000005B90000-0x0000000005C67000-memory.dmp

Filesize
860KB

Download
memory/2480-1077-0x0000000074590000-0x0000000074D41000-memory.dmp

Filesize
7.7MB

Download
memory/2480-1078-0x0000000074590000-0x0000000074D41000-memory.dmp

Filesize
7.7MB

Download
memory/2480-1079-0x0000000005D20000-0x0000000005D78000-memory.dmp

Filesize
352KB

Download
memory/2480-1080-0x0000000005D80000-0x0000000005DCC000-memory.dmp

Filesize
304KB

Download
memory/2480-1085-0x0000000074590000-0x0000000074D41000-memory.dmp

Filesize
7.7MB

Download
memory/2480-1084-0x0000000074590000-0x0000000074D41000-memory.dmp

Filesize
7.7MB

Download
memory/2480-1086-0x0000000074590000-0x0000000074D41000-memory.dmp

Filesize
7.7MB

Download
memory/2480-1087-0x000000007459E000-0x000000007459F000-memory.dmp

Filesize
4KB

Download
memory/2480-1088-0x00000000066E0000-0x0000000006C86000-memory.dmp

Filesize
5.6MB

Download
memory/2480-1089-0x0000000005E20000-0x0000000005E74000-memory.dmp

Filesize
336KB

Download
memory/2480-1098-0x0000000074590000-0x0000000074D41000-memory.dmp

Filesize
7.7MB

Download
memory/3220-1102-0x0000000073DCE000-0x0000000073DCF000-memory.dmp

Filesize
4KB

Download
memory/3220-2177-0x0000000073DC0000-0x0000000074571000-memory.dmp

Filesize
7.7MB

Download
memory/3220-2178-0x0000000073DC0000-0x0000000074571000-memory.dmp

Filesize
7.7MB

Download
memory/3220-2182-0x0000000073DC0000-0x0000000074571000-memory.dmp

Filesize
7.7MB

Download
memory/3220-2184-0x0000000073DC0000-0x0000000074571000-memory.dmp

Filesize
7.7MB

Download
memory/3220-2183-0x0000000073DC0000-0x0000000074571000-memory.dmp

Filesize
7.7MB

Download
memory/3220-2185-0x0000000073DCE000-0x0000000073DCF000-memory.dmp

Filesize
4KB

Download
memory/3220-2186-0x0000000073DC0000-0x0000000074571000-memory.dmp

Filesize
7.7MB

Download
memory/3220-2195-0x0000000073DC0000-0x0000000074571000-memory.dmp

Filesize
7.7MB

Download
memory/3532-2193-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4976-1096-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download