systembc | a809d7c791aa2a091554cae7ec1ef8321a2a818c134ec81fb2b53ca2cff7aa34

Analysis

max time kernel
142s
max time network
147s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
18-02-2023 07:47

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General

Target

d87be573a26e97c5b4b8959aab27d931.exe
Size

167KB
MD5

d87be573a26e97c5b4b8959aab27d931
SHA1

0953751d891c051e74bbbb974edc89a29fa88e7e
SHA256

a809d7c791aa2a091554cae7ec1ef8321a2a818c134ec81fb2b53ca2cff7aa34
SHA512

1fa16cbc837b18dce29113ba13301ba48352120e3e16ce660d52bc3bb9fb79c204772e1b31eccd4d684f33aaee22a9a5d68df8682838660bb5a88030b09ac307
SSDEEP

3072:O0O9ibCRpHnL972hGbVl2nES48tezHem:XwlRpHLl2vESMim

Score

10^/10

systembc trojan

Malware Config

Extracted

Family

systembc

advert127ds.xyz:4044

adxspace147.xyz:4044

Signatures

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

Processes:

gpcx.exe

pid process

2000 gpcx.exe
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

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

Connection Proxy
T1090

pid	process
2000	gpcx.exe

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

Drops file in Windows directory 2 IoCs

Processes:

d87be573a26e97c5b4b8959aab27d931.exe

description	ioc	process
File created	C:\Windows\Tasks\gpcx.job	d87be573a26e97c5b4b8959aab27d931.exe
File opened for modification	C:\Windows\Tasks\gpcx.job	d87be573a26e97c5b4b8959aab27d931.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

d87be573a26e97c5b4b8959aab27d931.exe

pid process

1584 d87be573a26e97c5b4b8959aab27d931.exe

pid	process
1584	d87be573a26e97c5b4b8959aab27d931.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

taskeng.exe

description	pid	process	target process
PID 276 wrote to memory of 2000	276	taskeng.exe	gpcx.exe
PID 276 wrote to memory of 2000	276	taskeng.exe	gpcx.exe
PID 276 wrote to memory of 2000	276	taskeng.exe	gpcx.exe
PID 276 wrote to memory of 2000	276	taskeng.exe	gpcx.exe

C:\Users\Admin\AppData\Local\Temp\d87be573a26e97c5b4b8959aab27d931.exe
"C:\Users\Admin\AppData\Local\Temp\d87be573a26e97c5b4b8959aab27d931.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:1584

C:\Windows\system32\taskeng.exe
taskeng.exe {DBF4A5A3-746A-4802-9DC8-701C621EE663} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:276

C:\ProgramData\qpeffv\gpcx.exe
C:\ProgramData\qpeffv\gpcx.exe start
2⤵
- Executes dropped EXE
PID:2000

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Connection Proxy

T1090

Impact

Replay Monitor

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Downloads

C:\ProgramData\qpeffv\gpcx.exe
Filesize
167KB

MD5
d87be573a26e97c5b4b8959aab27d931

SHA1
0953751d891c051e74bbbb974edc89a29fa88e7e

SHA256
a809d7c791aa2a091554cae7ec1ef8321a2a818c134ec81fb2b53ca2cff7aa34

SHA512
1fa16cbc837b18dce29113ba13301ba48352120e3e16ce660d52bc3bb9fb79c204772e1b31eccd4d684f33aaee22a9a5d68df8682838660bb5a88030b09ac307

Download Submit
C:\ProgramData\qpeffv\gpcx.exe
Filesize
167KB

MD5
d87be573a26e97c5b4b8959aab27d931

SHA1
0953751d891c051e74bbbb974edc89a29fa88e7e

SHA256
a809d7c791aa2a091554cae7ec1ef8321a2a818c134ec81fb2b53ca2cff7aa34

SHA512
1fa16cbc837b18dce29113ba13301ba48352120e3e16ce660d52bc3bb9fb79c204772e1b31eccd4d684f33aaee22a9a5d68df8682838660bb5a88030b09ac307

Download Submit
memory/1584-54-0x0000000075241000-0x0000000075243000-memory.dmp

Filesize
8KB

Download
memory/1584-55-0x0000000000D5A000-0x0000000000D60000-memory.dmp

Filesize
24KB

Download
memory/1584-56-0x0000000000030000-0x0000000000039000-memory.dmp

Filesize
36KB

Download
memory/1584-57-0x0000000000400000-0x0000000000C6F000-memory.dmp

Filesize
8.4MB

Download
memory/1584-61-0x0000000000D5A000-0x0000000000D60000-memory.dmp

Filesize
24KB

Download
memory/2000-59-0x0000000000000000-mapping.dmp

Download
memory/2000-63-0x0000000000D29000-0x0000000000D30000-memory.dmp

Filesize
28KB

Download
memory/2000-64-0x0000000000400000-0x0000000000C6F000-memory.dmp

Filesize
8.4MB

Download
memory/2000-65-0x0000000000D29000-0x0000000000D30000-memory.dmp

Filesize
28KB

Download