systembc | 31cdb1024e6010e5a59c0fc509432e6928c4eaf1a42c82e9fbd33e9aac2c552c

Resubmissions

10/04/2024, 03:10

240410-dpckqsfg9s 10

10/04/2024, 03:10

10/04/2024, 03:10

10/04/2024, 03:10

22/12/2023, 13:30

Analysis

max time kernel
607s
max time network
616s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
10/04/2024, 03:10

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General

Target

a41982f4915a70f246b0d6109280f39b.exe
Size

209KB
MD5

a41982f4915a70f246b0d6109280f39b
SHA1

a256130c4872a7860a95dbabfd6e8b5ea60e83aa
SHA256

31cdb1024e6010e5a59c0fc509432e6928c4eaf1a42c82e9fbd33e9aac2c552c
SHA512

890395bc017590ccf80e08b0d542c7c556c6d30cb7bb1902acc525745bcb225467fe0c9c213836eca0f577058334bfc90e6a767cbcb9e9ea5bff870ba006032a
SSDEEP

6144:YDnLgI91y1UkT57iJz/DpURWPSvHuUiYphu1Us:cnLh9yn52rpUR5vHuRYpM+s

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

pid	Process
3108	imtjej.exe

UPX packed file 1 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000800000001ac39-6.dat	upx

Unexpected DNS network traffic destination 1 IoCs

Network traffic to other servers than the configured DNS servers was detected on the DNS port.

description	ioc
Destination IP	88.198.207.48

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

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

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\imtjej.job	a41982f4915a70f246b0d6109280f39b.exe
File opened for modification	C:\Windows\Tasks\imtjej.job	a41982f4915a70f246b0d6109280f39b.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4028	a41982f4915a70f246b0d6109280f39b.exe
4028	a41982f4915a70f246b0d6109280f39b.exe

C:\Users\Admin\AppData\Local\Temp\a41982f4915a70f246b0d6109280f39b.exe
"C:\Users\Admin\AppData\Local\Temp\a41982f4915a70f246b0d6109280f39b.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:4028

C:\ProgramData\qluujja\imtjej.exe
C:\ProgramData\qluujja\imtjej.exe start
1⤵
- Executes dropped EXE
PID:3108

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Proxy

T1090

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\qluujja\imtjej.exe

Filesize
209KB

MD5
a41982f4915a70f246b0d6109280f39b

SHA1
a256130c4872a7860a95dbabfd6e8b5ea60e83aa

SHA256
31cdb1024e6010e5a59c0fc509432e6928c4eaf1a42c82e9fbd33e9aac2c552c

SHA512
890395bc017590ccf80e08b0d542c7c556c6d30cb7bb1902acc525745bcb225467fe0c9c213836eca0f577058334bfc90e6a767cbcb9e9ea5bff870ba006032a

Download Submit
memory/3108-10-0x0000000004770000-0x0000000004870000-memory.dmp

Filesize
1024KB

Download
memory/3108-11-0x00000000001C0000-0x00000000001C9000-memory.dmp

Filesize
36KB

Download
memory/3108-13-0x0000000000400000-0x00000000045F0000-memory.dmp

Filesize
65.9MB

Download
memory/3108-17-0x0000000004770000-0x0000000004870000-memory.dmp

Filesize
1024KB

Download
memory/4028-1-0x0000000004740000-0x0000000004840000-memory.dmp

Filesize
1024KB

Download
memory/4028-2-0x00000000001C0000-0x00000000001C9000-memory.dmp

Filesize
36KB

Download
memory/4028-9-0x0000000000400000-0x00000000045F0000-memory.dmp

Filesize
65.9MB

Download
memory/4028-14-0x0000000004740000-0x0000000004840000-memory.dmp

Filesize
1024KB

Download