systembc | f429131538f77d63756e8faa49219785c2b845c79c6ad621bebd6ab88a10e7e2

General

Target

e9f9a434fead41ebc2113ea330a6a0461c9d99c808852f94c6dfa3cd1a1af822.exe
Size

30KB
MD5

e568e52939c93b06ae050223ae4645c5
SHA1

b390b43d557a2364c8848ec598850cb5d4bc5a1b
SHA256

e9f9a434fead41ebc2113ea330a6a0461c9d99c808852f94c6dfa3cd1a1af822
SHA512

edcade4cab931b87bf5f347e57807f37bd5fb6ef90e132a59e84f82a853c4a1ca3413cbe0e31cb18952dd971b0fbd92a34f416607152beefc9d0e868105ebaa3

Score

10^/10

systembc trojan

Malware Config

Extracted

Family

systembc

C2

bookingswarfaces.com:4035

bookingswarfacesec.com:4035

Signatures

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

Processes:

xvuwrvt.exe

pid process

1548 xvuwrvt.exe
Looks up external IP address via web service 8 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

69 api.ipify.org
70 api.ipify.org
8 api.ipify.org
9 api.ipify.org
28 api.ipify.org
29 api.ipify.org
50 api.ipify.org
51 api.ipify.org
Uses Tor communications 1 TTPs
Malware can proxy its traffic through Tor for more anonymity.

Connection Proxy
T1090

pid	process
1548	xvuwrvt.exe

flow	ioc
69	api.ipify.org
70	api.ipify.org
8	api.ipify.org
9	api.ipify.org
28	api.ipify.org
29	api.ipify.org
50	api.ipify.org
51	api.ipify.org

Drops file in Windows directory 2 IoCs

Processes:

e9f9a434fead41ebc2113ea330a6a0461c9d99c808852f94c6dfa3cd1a1af822.exe

description	ioc	process
File created	C:\Windows\Tasks\xvuwrvt.job	e9f9a434fead41ebc2113ea330a6a0461c9d99c808852f94c6dfa3cd1a1af822.exe
File opened for modification	C:\Windows\Tasks\xvuwrvt.job	e9f9a434fead41ebc2113ea330a6a0461c9d99c808852f94c6dfa3cd1a1af822.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

e9f9a434fead41ebc2113ea330a6a0461c9d99c808852f94c6dfa3cd1a1af822.exe

pid process

1104 e9f9a434fead41ebc2113ea330a6a0461c9d99c808852f94c6dfa3cd1a1af822.exe

pid	process
1104	e9f9a434fead41ebc2113ea330a6a0461c9d99c808852f94c6dfa3cd1a1af822.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

taskeng.exe

description	pid	process	target process
PID 1640 wrote to memory of 1548	1640	taskeng.exe	xvuwrvt.exe
PID 1640 wrote to memory of 1548	1640	taskeng.exe	xvuwrvt.exe
PID 1640 wrote to memory of 1548	1640	taskeng.exe	xvuwrvt.exe
PID 1640 wrote to memory of 1548	1640	taskeng.exe	xvuwrvt.exe

C:\Users\Admin\AppData\Local\Temp\e9f9a434fead41ebc2113ea330a6a0461c9d99c808852f94c6dfa3cd1a1af822.exe
"C:\Users\Admin\AppData\Local\Temp\e9f9a434fead41ebc2113ea330a6a0461c9d99c808852f94c6dfa3cd1a1af822.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:1104

C:\Windows\system32\taskeng.exe
taskeng.exe {8981F898-9B55-4FC6-8186-2EC0DD7FE5DB} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:1640
- C:\ProgramData\whafs\xvuwrvt.exe
  C:\ProgramData\whafs\xvuwrvt.exe start
  2⤵
  - Executes dropped EXE
  PID:1548

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

Replay Monitor

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Downloads

C:\ProgramData\whafs\xvuwrvt.exe

MD5
e568e52939c93b06ae050223ae4645c5

SHA1
b390b43d557a2364c8848ec598850cb5d4bc5a1b

SHA256
e9f9a434fead41ebc2113ea330a6a0461c9d99c808852f94c6dfa3cd1a1af822

SHA512
edcade4cab931b87bf5f347e57807f37bd5fb6ef90e132a59e84f82a853c4a1ca3413cbe0e31cb18952dd971b0fbd92a34f416607152beefc9d0e868105ebaa3

Download Submit
C:\ProgramData\whafs\xvuwrvt.exe

MD5
e568e52939c93b06ae050223ae4645c5

SHA1
b390b43d557a2364c8848ec598850cb5d4bc5a1b

SHA256
e9f9a434fead41ebc2113ea330a6a0461c9d99c808852f94c6dfa3cd1a1af822

SHA512
edcade4cab931b87bf5f347e57807f37bd5fb6ef90e132a59e84f82a853c4a1ca3413cbe0e31cb18952dd971b0fbd92a34f416607152beefc9d0e868105ebaa3

Download Submit
memory/1104-60-0x0000000075551000-0x0000000075553000-memory.dmp

Filesize
8KB

Download
memory/1548-62-0x0000000000000000-mapping.dmp

Download

Analysis

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