systembc | d64a8cba1785faf9616ffe7a982ab013432b23aef75bd097d4f75dbe79ad2415

General

Target

d64a8cba1785faf9616ffe7a982ab013432b23aef75bd097d4f75dbe79ad2415.exe
Size

173KB
MD5

cbdfe40fef7a9604064f8494f73e49bc
SHA1

09bf2fcb2f8c54e752eb5a10f2b6fc66d584b43e
SHA256

d64a8cba1785faf9616ffe7a982ab013432b23aef75bd097d4f75dbe79ad2415
SHA512

bee9514bd26fa31ba4977c4088d584884861dba4a9e69264e95a1fc5804edde3310ddc07f762d9908cfbf8c6436a32bd4b7539ac254913b2fa97c528bf1238dd

Score

10^/10

systembc trojan upx

Malware Config

Extracted

Family

systembc

C2

dec15coma.com:4039

dec15coma.xyz:4039

Signatures

SystemBC
SystemBC is a proxy and remote administration tool first seen in 2019.
trojan systembc
Executes dropped EXE 1 IoCs

Processes:

dcocx.exe

pid process

1900 dcocx.exe

pid	process
1900	dcocx.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
C:\ProgramData\mxavl\dcocx.exe	upx
C:\ProgramData\mxavl\dcocx.exe	upx

Looks up external IP address via web service 4 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

5 api.ipify.org
6 api.ipify.org
7 ip4.seeip.org
8 ip4.seeip.org
Uses Tor communications 1 TTPs
Malware can proxy its traffic through Tor for more anonymity.

Connection Proxy
T1090

flow	ioc
5	api.ipify.org
6	api.ipify.org
7	ip4.seeip.org
8	ip4.seeip.org

Drops file in Windows directory 2 IoCs

Processes:

d64a8cba1785faf9616ffe7a982ab013432b23aef75bd097d4f75dbe79ad2415.exe

description	ioc	process
File created	C:\Windows\Tasks\dcocx.job	d64a8cba1785faf9616ffe7a982ab013432b23aef75bd097d4f75dbe79ad2415.exe
File opened for modification	C:\Windows\Tasks\dcocx.job	d64a8cba1785faf9616ffe7a982ab013432b23aef75bd097d4f75dbe79ad2415.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

d64a8cba1785faf9616ffe7a982ab013432b23aef75bd097d4f75dbe79ad2415.exe

pid process

1616 d64a8cba1785faf9616ffe7a982ab013432b23aef75bd097d4f75dbe79ad2415.exe

pid	process
1616	d64a8cba1785faf9616ffe7a982ab013432b23aef75bd097d4f75dbe79ad2415.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

taskeng.exe

description	pid	process	target process
PID 1096 wrote to memory of 1900	1096	taskeng.exe	dcocx.exe
PID 1096 wrote to memory of 1900	1096	taskeng.exe	dcocx.exe
PID 1096 wrote to memory of 1900	1096	taskeng.exe	dcocx.exe
PID 1096 wrote to memory of 1900	1096	taskeng.exe	dcocx.exe

C:\Users\Admin\AppData\Local\Temp\d64a8cba1785faf9616ffe7a982ab013432b23aef75bd097d4f75dbe79ad2415.exe
"C:\Users\Admin\AppData\Local\Temp\d64a8cba1785faf9616ffe7a982ab013432b23aef75bd097d4f75dbe79ad2415.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:1616

C:\Windows\system32\taskeng.exe
taskeng.exe {2DD0F921-570C-4F36-B524-A20D928B1F2E} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:1096
- C:\ProgramData\mxavl\dcocx.exe
  C:\ProgramData\mxavl\dcocx.exe start
  2⤵
  - Executes dropped EXE
  PID:1900

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Connection Proxy

1

T1090

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Connection Proxy

1

T1090

Exfiltration

Impact

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Downloads

C:\ProgramData\mxavl\dcocx.exe

MD5
cbdfe40fef7a9604064f8494f73e49bc

SHA1
09bf2fcb2f8c54e752eb5a10f2b6fc66d584b43e

SHA256
d64a8cba1785faf9616ffe7a982ab013432b23aef75bd097d4f75dbe79ad2415

SHA512
bee9514bd26fa31ba4977c4088d584884861dba4a9e69264e95a1fc5804edde3310ddc07f762d9908cfbf8c6436a32bd4b7539ac254913b2fa97c528bf1238dd

Download Submit
C:\ProgramData\mxavl\dcocx.exe

MD5
cbdfe40fef7a9604064f8494f73e49bc

SHA1
09bf2fcb2f8c54e752eb5a10f2b6fc66d584b43e

SHA256
d64a8cba1785faf9616ffe7a982ab013432b23aef75bd097d4f75dbe79ad2415

SHA512
bee9514bd26fa31ba4977c4088d584884861dba4a9e69264e95a1fc5804edde3310ddc07f762d9908cfbf8c6436a32bd4b7539ac254913b2fa97c528bf1238dd

Download Submit
memory/1616-54-0x00000000755A1000-0x00000000755A3000-memory.dmp

Filesize
8KB

Download
memory/1616-55-0x0000000000020000-0x0000000000026000-memory.dmp

Filesize
24KB

Download
memory/1616-56-0x0000000000030000-0x0000000000039000-memory.dmp

Filesize
36KB

Download
memory/1616-57-0x0000000000400000-0x00000000047B7000-memory.dmp

Filesize
67.7MB

Download
memory/1900-61-0x0000000000400000-0x00000000047B7000-memory.dmp

Filesize
67.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads