systembc | bd70533a197b804454e56b1926c3adfd5880d2ee26fb393db923a09f18d8d661

Analysis

max time kernel
141s
max time network
148s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
27-08-2024 03:16

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General

Target

bd70533a197b804454e56b1926c3adfd5880d2ee26fb393db923a09f18d8d661.exe
Size

724KB
MD5

7ff8fb3e91efc5da071a140880ed3f5b
SHA1

6919948f570e388fdd2960925fa39030894482f0
SHA256

bd70533a197b804454e56b1926c3adfd5880d2ee26fb393db923a09f18d8d661
SHA512

51e459cd7fa0b29fc418ecd573a83f0eb93d4374be34a78a825d8cc3ce0216d83f8fcf10e141efb030c83df7d5d95681abbd50b9ae42d23cf9916e99d58280ca
SSDEEP

12288:K2c1/SCCBpcdznj0cHYKlI1DsAGqekL47Yql:ZK91dzj0FKa1BZtG

Score

10^/10

systembc discovery trojan

Malware Config

Extracted

Family

systembc

185.215.113.32:4000

78.47.64.46:4000

Signatures

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

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\wow64.job	bd70533a197b804454e56b1926c3adfd5880d2ee26fb393db923a09f18d8d661.exe
File opened for modification	C:\Windows\Tasks\wow64.job	bd70533a197b804454e56b1926c3adfd5880d2ee26fb393db923a09f18d8d661.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	bd70533a197b804454e56b1926c3adfd5880d2ee26fb393db923a09f18d8d661.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bd70533a197b804454e56b1926c3adfd5880d2ee26fb393db923a09f18d8d661.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2660 wrote to memory of 2788	2660	taskeng.exe	31
PID 2660 wrote to memory of 2788	2660	taskeng.exe	31
PID 2660 wrote to memory of 2788	2660	taskeng.exe	31
PID 2660 wrote to memory of 2788	2660	taskeng.exe	31

C:\Users\Admin\AppData\Local\Temp\bd70533a197b804454e56b1926c3adfd5880d2ee26fb393db923a09f18d8d661.exe
"C:\Users\Admin\AppData\Local\Temp\bd70533a197b804454e56b1926c3adfd5880d2ee26fb393db923a09f18d8d661.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:3040

C:\Windows\system32\taskeng.exe
taskeng.exe {216F3765-D90C-42BD-9021-208E3FAC8FD4} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:2660
- C:\Users\Admin\AppData\Local\Temp\bd70533a197b804454e56b1926c3adfd5880d2ee26fb393db923a09f18d8d661.exe
  C:\Users\Admin\AppData\Local\Temp\bd70533a197b804454e56b1926c3adfd5880d2ee26fb393db923a09f18d8d661.exe start
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2788

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/2788-5-0x0000000000400000-0x00000000004BB000-memory.dmp

Filesize
748KB

Download
memory/2788-6-0x0000000000400000-0x00000000004BB000-memory.dmp

Filesize
748KB

Download
memory/2788-7-0x0000000000400000-0x00000000004BB000-memory.dmp

Filesize
748KB

Download
memory/3040-0-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/3040-1-0x0000000000290000-0x0000000000295000-memory.dmp

Filesize
20KB

Download
memory/3040-2-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/3040-8-0x0000000000400000-0x00000000004BB000-memory.dmp

Filesize
748KB

Download