systembc | 37f820fa2cfe1030b9a20be1e124e31354b8c615dd467da63d812057faff2b49

Analysis

max time kernel
113s
max time network
118s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
23-11-2024 12:36

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General

Target

37f820fa2cfe1030b9a20be1e124e31354b8c615dd467da63d812057faff2b49.exe
Size

331KB
MD5

95f3f8ac930634819d32469d82a229fb
SHA1

f9725793b66792f53380440d88edbc599d078504
SHA256

37f820fa2cfe1030b9a20be1e124e31354b8c615dd467da63d812057faff2b49
SHA512

0e0c976f7a153bf58d18bde47241b6a4101f61f6b632904165f67ab323c6a79397478f3a2c4d39841b8f2ca6f20c6e2e975938f0a57ac2be8147ee225f88dd1c
SSDEEP

6144:G+Noo+GdZhrbK3YS2WfD18K8fVKpS94h89Bq4:G+Noo1ZhCp2WfD1gfcpS98UBr

Score

10^/10

systembc discovery trojan

Malware Config

Extracted

Family

systembc

185.173.39.49:4001

Signatures

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

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\wow64.job	37f820fa2cfe1030b9a20be1e124e31354b8c615dd467da63d812057faff2b49.exe
File opened for modification	C:\Windows\Tasks\wow64.job	37f820fa2cfe1030b9a20be1e124e31354b8c615dd467da63d812057faff2b49.exe

System Location Discovery: System Language Discovery 1 TTPs 1 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	37f820fa2cfe1030b9a20be1e124e31354b8c615dd467da63d812057faff2b49.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2716 wrote to memory of 2980	2716	taskeng.exe	31
PID 2716 wrote to memory of 2980	2716	taskeng.exe	31
PID 2716 wrote to memory of 2980	2716	taskeng.exe	31
PID 2716 wrote to memory of 2980	2716	taskeng.exe	31

C:\Users\Admin\AppData\Local\Temp\37f820fa2cfe1030b9a20be1e124e31354b8c615dd467da63d812057faff2b49.exe
"C:\Users\Admin\AppData\Local\Temp\37f820fa2cfe1030b9a20be1e124e31354b8c615dd467da63d812057faff2b49.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:2256

C:\Windows\system32\taskeng.exe
taskeng.exe {08AB2EE0-1551-4715-AA43-674CF91581D9} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:2716
- C:\Users\Admin\AppData\Local\Temp\37f820fa2cfe1030b9a20be1e124e31354b8c615dd467da63d812057faff2b49.exe
  C:\Users\Admin\AppData\Local\Temp\37f820fa2cfe1030b9a20be1e124e31354b8c615dd467da63d812057faff2b49.exe start
  2⤵
  PID:2980

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

memory/2256-2-0x0000000000220000-0x0000000000225000-memory.dmp

Filesize
20KB

Download
memory/2256-1-0x0000000002EB0000-0x0000000002FB0000-memory.dmp

Filesize
1024KB

Download
memory/2256-3-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/2256-8-0x0000000002EB0000-0x0000000002FB0000-memory.dmp

Filesize
1024KB

Download
memory/2256-9-0x0000000000220000-0x0000000000225000-memory.dmp

Filesize
20KB

Download
memory/2256-10-0x0000000000400000-0x0000000002DAA000-memory.dmp

Filesize
41.7MB

Download
memory/2980-7-0x0000000000400000-0x0000000002DAA000-memory.dmp

Filesize
41.7MB

Download