systembc | 8ceee34b010701c3745db2e9868c68902440d951d7c2dbe383ee2c25d5aa20dc

Analysis

max time kernel
143s
max time network
143s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
17-08-2024 14:08

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General

Target

a2d724e306338577a5896594950d41a5_JaffaCakes118.exe
Size

335KB
MD5

a2d724e306338577a5896594950d41a5
SHA1

7914ac4f3911cd4ea2aa15546a6f14cabe89b55d
SHA256

8ceee34b010701c3745db2e9868c68902440d951d7c2dbe383ee2c25d5aa20dc
SHA512

af91fbca78e583ff5a9cc211b154fb5043918fde3d8b0e93e22d9b08e0d0e05ce03bb8e7b7c62a1ac07e2d7b85332badedd03bd681c05dfb0de6e79e2c616526
SSDEEP

6144:rUpXdMEe7VdlxQ/0C7WBCgs0Wkadbr2X3f+gOkXdhF3:rUddkjlk1WBz0kaV2XWgO8hF3

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

Processes:

ltmffpi.exe

pid process

2636 ltmffpi.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.

Processes:

flow ioc

7 ip4.seeip.org
5 api.ipify.org
6 api.ipify.org
Uses Tor communications 1 TTPs
Malware can proxy its traffic through Tor for more anonymity.

Proxy
T1090

pid	process
2636	ltmffpi.exe

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

Drops file in Windows directory 2 IoCs

Processes:

a2d724e306338577a5896594950d41a5_JaffaCakes118.exe

description	ioc	process
File opened for modification	C:\Windows\Tasks\ltmffpi.job	a2d724e306338577a5896594950d41a5_JaffaCakes118.exe
File created	C:\Windows\Tasks\ltmffpi.job	a2d724e306338577a5896594950d41a5_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

Processes:

a2d724e306338577a5896594950d41a5_JaffaCakes118.exeltmffpi.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a2d724e306338577a5896594950d41a5_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ltmffpi.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

a2d724e306338577a5896594950d41a5_JaffaCakes118.exe

pid process

784 a2d724e306338577a5896594950d41a5_JaffaCakes118.exe

pid	process
784	a2d724e306338577a5896594950d41a5_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

taskeng.exe

description	pid	process	target process
PID 1920 wrote to memory of 2636	1920	taskeng.exe	ltmffpi.exe
PID 1920 wrote to memory of 2636	1920	taskeng.exe	ltmffpi.exe
PID 1920 wrote to memory of 2636	1920	taskeng.exe	ltmffpi.exe
PID 1920 wrote to memory of 2636	1920	taskeng.exe	ltmffpi.exe

C:\Users\Admin\AppData\Local\Temp\a2d724e306338577a5896594950d41a5_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a2d724e306338577a5896594950d41a5_JaffaCakes118.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:784

C:\Windows\system32\taskeng.exe
taskeng.exe {BB95505D-D8C9-4C00-B75E-EFB060FC755C} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:1920
- C:\ProgramData\qrkclun\ltmffpi.exe
  C:\ProgramData\qrkclun\ltmffpi.exe start
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2636

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

Proxy

T1090

Exfiltration

Impact

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Downloads

C:\ProgramData\qrkclun\ltmffpi.exe

Filesize
335KB

MD5
a2d724e306338577a5896594950d41a5

SHA1
7914ac4f3911cd4ea2aa15546a6f14cabe89b55d

SHA256
8ceee34b010701c3745db2e9868c68902440d951d7c2dbe383ee2c25d5aa20dc

SHA512
af91fbca78e583ff5a9cc211b154fb5043918fde3d8b0e93e22d9b08e0d0e05ce03bb8e7b7c62a1ac07e2d7b85332badedd03bd681c05dfb0de6e79e2c616526

Download Submit
memory/784-2-0x0000000000020000-0x0000000000029000-memory.dmp

Filesize
36KB

Download
memory/784-1-0x0000000004ED0000-0x0000000004FD0000-memory.dmp

Filesize
1024KB

Download
memory/784-3-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/784-4-0x0000000004ED0000-0x0000000004FD0000-memory.dmp

Filesize
1024KB

Download
memory/784-6-0x0000000000020000-0x0000000000029000-memory.dmp

Filesize
36KB

Download
memory/784-5-0x0000000000400000-0x0000000004DD5000-memory.dmp

Filesize
73.8MB

Download
memory/784-8-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2636-15-0x0000000000400000-0x0000000004DD5000-memory.dmp

Filesize
73.8MB

Download