systembc | 91eba91d8b9f359f751e25935401f51ee6f6fb49304263050690d5079475606e

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
27-01-2023 14:29

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General

Target

fb45af7bb8ffdcddaaec2a9e88968fbcb82eaedbdf1c16a7e9ac861906a07e23.exe
Size

156KB
MD5

e62582236c24973720e092adec05f8c5
SHA1

dc865394a456b89282bf248eeff3509ec0116911
SHA256

fb45af7bb8ffdcddaaec2a9e88968fbcb82eaedbdf1c16a7e9ac861906a07e23
SHA512

702960c841eec4c16d4b686c1cafe42d1568e3cde1aebca4c2feaef275dc9efd5dea8e6260d4a18f92d63640bd530ccb071de42a6511a7719fbbe7ee2b9bda2a
SSDEEP

3072:SXiOd5A7ENBKYEm9/1fUQcl7XcOOILUJC2PsrZLILNNOmr:SXiEA7EfKYE6RU1AnvspsP

Score

10^/10

systembc trojan

Malware Config

Extracted

Family

systembc

advertrex20.xyz:4044

gentexman37.xyz:4044

Signatures

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

Processes:

exeoud.exe

pid process

516 exeoud.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

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

pid	process
516	exeoud.exe

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:

fb45af7bb8ffdcddaaec2a9e88968fbcb82eaedbdf1c16a7e9ac861906a07e23.exe

description	ioc	process
File created	C:\Windows\Tasks\exeoud.job	fb45af7bb8ffdcddaaec2a9e88968fbcb82eaedbdf1c16a7e9ac861906a07e23.exe
File opened for modification	C:\Windows\Tasks\exeoud.job	fb45af7bb8ffdcddaaec2a9e88968fbcb82eaedbdf1c16a7e9ac861906a07e23.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

fb45af7bb8ffdcddaaec2a9e88968fbcb82eaedbdf1c16a7e9ac861906a07e23.exe

pid process

1112 fb45af7bb8ffdcddaaec2a9e88968fbcb82eaedbdf1c16a7e9ac861906a07e23.exe

pid	process
1112	fb45af7bb8ffdcddaaec2a9e88968fbcb82eaedbdf1c16a7e9ac861906a07e23.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

taskeng.exe

description	pid	process	target process
PID 596 wrote to memory of 516	596	taskeng.exe	exeoud.exe
PID 596 wrote to memory of 516	596	taskeng.exe	exeoud.exe
PID 596 wrote to memory of 516	596	taskeng.exe	exeoud.exe
PID 596 wrote to memory of 516	596	taskeng.exe	exeoud.exe

C:\Users\Admin\AppData\Local\Temp\fb45af7bb8ffdcddaaec2a9e88968fbcb82eaedbdf1c16a7e9ac861906a07e23.exe
"C:\Users\Admin\AppData\Local\Temp\fb45af7bb8ffdcddaaec2a9e88968fbcb82eaedbdf1c16a7e9ac861906a07e23.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:1112

C:\Windows\system32\taskeng.exe
taskeng.exe {7D066F29-BDA6-479C-B856-56534F0AD18F} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:596

C:\ProgramData\uabwpb\exeoud.exe
C:\ProgramData\uabwpb\exeoud.exe start
2⤵
- Executes dropped EXE
PID:516

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\uabwpb\exeoud.exe
Filesize
156KB

MD5
e62582236c24973720e092adec05f8c5

SHA1
dc865394a456b89282bf248eeff3509ec0116911

SHA256
fb45af7bb8ffdcddaaec2a9e88968fbcb82eaedbdf1c16a7e9ac861906a07e23

SHA512
702960c841eec4c16d4b686c1cafe42d1568e3cde1aebca4c2feaef275dc9efd5dea8e6260d4a18f92d63640bd530ccb071de42a6511a7719fbbe7ee2b9bda2a

Download Submit
C:\ProgramData\uabwpb\exeoud.exe
Filesize
156KB

MD5
e62582236c24973720e092adec05f8c5

SHA1
dc865394a456b89282bf248eeff3509ec0116911

SHA256
fb45af7bb8ffdcddaaec2a9e88968fbcb82eaedbdf1c16a7e9ac861906a07e23

SHA512
702960c841eec4c16d4b686c1cafe42d1568e3cde1aebca4c2feaef275dc9efd5dea8e6260d4a18f92d63640bd530ccb071de42a6511a7719fbbe7ee2b9bda2a

Download Submit
memory/516-59-0x0000000000000000-mapping.dmp

Download
memory/516-63-0x00000000009FB000-0x0000000000A02000-memory.dmp

Filesize
28KB

Download
memory/516-64-0x0000000000400000-0x00000000008C6000-memory.dmp

Filesize
4.8MB

Download
memory/516-65-0x00000000009FB000-0x0000000000A02000-memory.dmp

Filesize
28KB

Download
memory/1112-54-0x00000000760D1000-0x00000000760D3000-memory.dmp

Filesize
8KB

Download
memory/1112-55-0x0000000000A4B000-0x0000000000A52000-memory.dmp

Filesize
28KB

Download
memory/1112-56-0x0000000000230000-0x0000000000239000-memory.dmp

Filesize
36KB

Download
memory/1112-57-0x0000000000400000-0x00000000008C6000-memory.dmp

Filesize
4.8MB

Download
memory/1112-62-0x0000000000A4B000-0x0000000000A52000-memory.dmp

Filesize
28KB

Download