systembc | 2becd96e38316309a80434b66df8a932bf57f70c66118860d9510758c281e06f

Analysis

max time kernel
147s
max time network
123s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
29-07-2024 14:37

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

4c94136171542215949f50f67e5f34f2_JaffaCakes118.exe
Size

168KB
MD5

4c94136171542215949f50f67e5f34f2
SHA1

101a5a5afe5b902af9050bef2d2ddd5e54f54448
SHA256

2becd96e38316309a80434b66df8a932bf57f70c66118860d9510758c281e06f
SHA512

7fabc5cad68035586766e7e8243d232fcbdcb5b18dee2c303c23797d8f439047031c11b875121e19023115a76b66939d11e6366a64e5037bfc64ec011cf57782
SSDEEP

3072:JfN7Cjt27vt+Ma/ljphLMzBiKjILzyMatMZ2XefeN:T7CK/Cth4znszXaPHN

Score

10^/10

systembc discovery trojan

Malware Config

Extracted

Family

systembc

knock0909.monster:4035

knock0909.xyz:4035

Signatures

SystemBC
SystemBC is a proxy and remote administration tool first seen in 2019.
trojan systembc

Executes dropped EXE 1 IoCs

pid	Process
2772	sjvfuq.exe

Looks up external IP address via web service 3 IoCs

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

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

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Tasks\sjvfuq.job	4c94136171542215949f50f67e5f34f2_JaffaCakes118.exe
File created	C:\Windows\Tasks\sjvfuq.job	4c94136171542215949f50f67e5f34f2_JaffaCakes118.exe

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4c94136171542215949f50f67e5f34f2_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sjvfuq.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2084	4c94136171542215949f50f67e5f34f2_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2164 wrote to memory of 2772	2164	taskeng.exe	31
PID 2164 wrote to memory of 2772	2164	taskeng.exe	31
PID 2164 wrote to memory of 2772	2164	taskeng.exe	31
PID 2164 wrote to memory of 2772	2164	taskeng.exe	31

C:\Users\Admin\AppData\Local\Temp\4c94136171542215949f50f67e5f34f2_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\4c94136171542215949f50f67e5f34f2_JaffaCakes118.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:2084

C:\Windows\system32\taskeng.exe
taskeng.exe {CB9068F7-08F8-4B34-8FDA-E520A1FF2615} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:2164
- C:\ProgramData\mdsu\sjvfuq.exe
  C:\ProgramData\mdsu\sjvfuq.exe start
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2772

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\mdsu\sjvfuq.exe

Filesize
168KB

MD5
4c94136171542215949f50f67e5f34f2

SHA1
101a5a5afe5b902af9050bef2d2ddd5e54f54448

SHA256
2becd96e38316309a80434b66df8a932bf57f70c66118860d9510758c281e06f

SHA512
7fabc5cad68035586766e7e8243d232fcbdcb5b18dee2c303c23797d8f439047031c11b875121e19023115a76b66939d11e6366a64e5037bfc64ec011cf57782

Download Submit
memory/2084-1-0x00000000002D0000-0x00000000003D0000-memory.dmp

Filesize
1024KB

Download
memory/2084-2-0x00000000001B0000-0x00000000001B9000-memory.dmp

Filesize
36KB

Download
memory/2084-3-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2084-4-0x0000000000400000-0x0000000005FCC000-memory.dmp

Filesize
91.8MB

Download
memory/2084-13-0x00000000001B0000-0x00000000001B9000-memory.dmp

Filesize
36KB

Download
memory/2084-12-0x00000000002D0000-0x00000000003D0000-memory.dmp

Filesize
1024KB

Download
memory/2772-14-0x0000000000400000-0x0000000005FCC000-memory.dmp

Filesize
91.8MB

Download