systembc | 2ff18fb4a4d05b7d419a88167d7001bb000eac2f4861bf3849a713b6b701f4c9

Resubmissions

18-04-2024 11:08

240418-m8wmdsbc27 10

18-04-2024 11:08

18-04-2024 11:08

18-04-2024 11:08

18-04-2024 11:08

18-04-2024 09:41

Analysis

max time kernel
599s
max time network
608s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
18-04-2024 11:08

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General

Target

2ff18fb4a4d05b7d419a88167d7001bb000eac2f4861bf3849a713b6b701f4c9.exe
Size

209KB
MD5

8e9ddb099e71555326413d9a3a930584
SHA1

96350dae3f42d37341b3da7410aabe5c42384156
SHA256

2ff18fb4a4d05b7d419a88167d7001bb000eac2f4861bf3849a713b6b701f4c9
SHA512

8d34f32ee48e3d399e020ba3ab4eeab9f1fbdb55a4a5b61b120280975990058221c75be001d09b4f804400977bb769e9ba1fdbd68e90f7db97bd78a69001f09c
SSDEEP

6144:YDnLgI91y1UkT57iJz/DpURWPSvHuUiYphu1Ux:cnLh9yn52rpUR5vHuRYpM+x

Score

10^/10

systembc trojan upx

Malware Config

Extracted

Family

systembc

yan0212.com:4039

yan0212.net:4039

Signatures

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

Processes:

whwfe.exe

pid process

4520 whwfe.exe

pid	process
4520	whwfe.exe

UPX packed file 1 IoCs

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

upx

Processes:

resource	yara_rule
C:\ProgramData\itrbab\whwfe.exe	upx

Unexpected DNS network traffic destination 1 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.

Processes:

description ioc

Destination IP 88.216.223.3
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

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

Proxy
T1090

description	ioc
Destination IP	88.216.223.3

flow	ioc
4	api.ipify.org
5	api.ipify.org

Drops file in Windows directory 2 IoCs

Processes:

2ff18fb4a4d05b7d419a88167d7001bb000eac2f4861bf3849a713b6b701f4c9.exe

description	ioc	process
File created	C:\Windows\Tasks\whwfe.job	2ff18fb4a4d05b7d419a88167d7001bb000eac2f4861bf3849a713b6b701f4c9.exe
File opened for modification	C:\Windows\Tasks\whwfe.job	2ff18fb4a4d05b7d419a88167d7001bb000eac2f4861bf3849a713b6b701f4c9.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

2ff18fb4a4d05b7d419a88167d7001bb000eac2f4861bf3849a713b6b701f4c9.exe

pid	process
2060	2ff18fb4a4d05b7d419a88167d7001bb000eac2f4861bf3849a713b6b701f4c9.exe
2060	2ff18fb4a4d05b7d419a88167d7001bb000eac2f4861bf3849a713b6b701f4c9.exe

C:\Users\Admin\AppData\Local\Temp\2ff18fb4a4d05b7d419a88167d7001bb000eac2f4861bf3849a713b6b701f4c9.exe
"C:\Users\Admin\AppData\Local\Temp\2ff18fb4a4d05b7d419a88167d7001bb000eac2f4861bf3849a713b6b701f4c9.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:2060

C:\ProgramData\itrbab\whwfe.exe
C:\ProgramData\itrbab\whwfe.exe start
1⤵
- Executes dropped EXE
PID:4520

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Proxy

T1090

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\ProgramData\itrbab\whwfe.exe
Filesize
209KB

MD5
8e9ddb099e71555326413d9a3a930584

SHA1
96350dae3f42d37341b3da7410aabe5c42384156

SHA256
2ff18fb4a4d05b7d419a88167d7001bb000eac2f4861bf3849a713b6b701f4c9

SHA512
8d34f32ee48e3d399e020ba3ab4eeab9f1fbdb55a4a5b61b120280975990058221c75be001d09b4f804400977bb769e9ba1fdbd68e90f7db97bd78a69001f09c

Download Submit
memory/2060-1-0x0000000004800000-0x0000000004900000-memory.dmp

Filesize
1024KB

Download
memory/2060-2-0x00000000001C0000-0x00000000001C9000-memory.dmp

Filesize
36KB

Download
memory/2060-9-0x0000000000400000-0x00000000045F0000-memory.dmp

Filesize
65.9MB

Download
memory/2060-14-0x0000000004800000-0x0000000004900000-memory.dmp

Filesize
1024KB

Download
memory/4520-10-0x00000000047D0000-0x00000000048D0000-memory.dmp

Filesize
1024KB

Download
memory/4520-11-0x00000000001C0000-0x00000000001C9000-memory.dmp

Filesize
36KB

Download
memory/4520-13-0x0000000000400000-0x00000000045F0000-memory.dmp

Filesize
65.9MB

Download
memory/4520-17-0x00000000047D0000-0x00000000048D0000-memory.dmp

Filesize
1024KB

Download