systembc | 318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd

Analysis

max time kernel
147s
max time network
150s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
28-07-2024 07:02

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General

Target

0dc61438b79668900bd081bac6109760_JaffaCakes118.exe
Size

350KB
MD5

0dc61438b79668900bd081bac6109760
SHA1

2ee66fd972c2d28ad30775971ba95056951910f0
SHA256

318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd
SHA512

467b352ce6188e6126050c229cd47b526e83ef3535449c3f02b70491e159523d7cc8ebb28caab4e8d98627a22a0af1faf13b134072309dfe56ad175d18177ca7
SSDEEP

6144:RoX0oZ+rm/OV6ZH7XYuB4xpuMadbr2X3f+gOkXdhFr:Ry0xrm/h7XYuWCMaV2XWgO8hFr

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 4 IoCs

pid	Process
2192	cgajd.exe
2848	cgajd.exe
2964	cgajd.exe
2904	cgajd.exe

Looks up external IP address via web service 4 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
8	ip4.seeip.org

Uses Tor communications 1 TTPs
Malware can proxy its traffic through Tor for more anonymity.

Proxy
T1090

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2044 set thread context of 2520	2044	0dc61438b79668900bd081bac6109760_JaffaCakes118.exe	29
PID 2192 set thread context of 2848	2192	cgajd.exe	32
PID 2964 set thread context of 2904	2964	cgajd.exe	34

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\cgajd.job	0dc61438b79668900bd081bac6109760_JaffaCakes118.exe
File opened for modification	C:\Windows\Tasks\cgajd.job	0dc61438b79668900bd081bac6109760_JaffaCakes118.exe

System Location Discovery: System Language Discovery 1 TTPs 5 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	0dc61438b79668900bd081bac6109760_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cgajd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cgajd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cgajd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	0dc61438b79668900bd081bac6109760_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2520	0dc61438b79668900bd081bac6109760_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 38 IoCs

description	pid	Process	procid_target
PID 2044 wrote to memory of 2520	2044	0dc61438b79668900bd081bac6109760_JaffaCakes118.exe	29
PID 2044 wrote to memory of 2520	2044	0dc61438b79668900bd081bac6109760_JaffaCakes118.exe	29
PID 2044 wrote to memory of 2520	2044	0dc61438b79668900bd081bac6109760_JaffaCakes118.exe	29
PID 2044 wrote to memory of 2520	2044	0dc61438b79668900bd081bac6109760_JaffaCakes118.exe	29
PID 2044 wrote to memory of 2520	2044	0dc61438b79668900bd081bac6109760_JaffaCakes118.exe	29
PID 2044 wrote to memory of 2520	2044	0dc61438b79668900bd081bac6109760_JaffaCakes118.exe	29
PID 2044 wrote to memory of 2520	2044	0dc61438b79668900bd081bac6109760_JaffaCakes118.exe	29
PID 2044 wrote to memory of 2520	2044	0dc61438b79668900bd081bac6109760_JaffaCakes118.exe	29
PID 2044 wrote to memory of 2520	2044	0dc61438b79668900bd081bac6109760_JaffaCakes118.exe	29
PID 2044 wrote to memory of 2520	2044	0dc61438b79668900bd081bac6109760_JaffaCakes118.exe	29
PID 2160 wrote to memory of 2192	2160	taskeng.exe	31
PID 2160 wrote to memory of 2192	2160	taskeng.exe	31
PID 2160 wrote to memory of 2192	2160	taskeng.exe	31
PID 2160 wrote to memory of 2192	2160	taskeng.exe	31
PID 2192 wrote to memory of 2848	2192	cgajd.exe	32
PID 2192 wrote to memory of 2848	2192	cgajd.exe	32
PID 2192 wrote to memory of 2848	2192	cgajd.exe	32
PID 2192 wrote to memory of 2848	2192	cgajd.exe	32
PID 2192 wrote to memory of 2848	2192	cgajd.exe	32
PID 2192 wrote to memory of 2848	2192	cgajd.exe	32
PID 2192 wrote to memory of 2848	2192	cgajd.exe	32
PID 2192 wrote to memory of 2848	2192	cgajd.exe	32
PID 2192 wrote to memory of 2848	2192	cgajd.exe	32
PID 2192 wrote to memory of 2848	2192	cgajd.exe	32
PID 2160 wrote to memory of 2964	2160	taskeng.exe	33
PID 2160 wrote to memory of 2964	2160	taskeng.exe	33
PID 2160 wrote to memory of 2964	2160	taskeng.exe	33
PID 2160 wrote to memory of 2964	2160	taskeng.exe	33
PID 2964 wrote to memory of 2904	2964	cgajd.exe	34
PID 2964 wrote to memory of 2904	2964	cgajd.exe	34
PID 2964 wrote to memory of 2904	2964	cgajd.exe	34
PID 2964 wrote to memory of 2904	2964	cgajd.exe	34
PID 2964 wrote to memory of 2904	2964	cgajd.exe	34
PID 2964 wrote to memory of 2904	2964	cgajd.exe	34
PID 2964 wrote to memory of 2904	2964	cgajd.exe	34
PID 2964 wrote to memory of 2904	2964	cgajd.exe	34
PID 2964 wrote to memory of 2904	2964	cgajd.exe	34
PID 2964 wrote to memory of 2904	2964	cgajd.exe	34

C:\Users\Admin\AppData\Local\Temp\0dc61438b79668900bd081bac6109760_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\0dc61438b79668900bd081bac6109760_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2044
- C:\Users\Admin\AppData\Local\Temp\0dc61438b79668900bd081bac6109760_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\0dc61438b79668900bd081bac6109760_JaffaCakes118.exe"
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:2520

C:\Windows\system32\taskeng.exe
taskeng.exe {0A71B06E-BB95-465D-8E2F-AC58E61B0572} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:2160
- C:\ProgramData\nkvj\cgajd.exe
  C:\ProgramData\nkvj\cgajd.exe start
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2192
- - C:\ProgramData\nkvj\cgajd.exe
    C:\ProgramData\nkvj\cgajd.exe start
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2848
- C:\ProgramData\nkvj\cgajd.exe
  C:\ProgramData\nkvj\cgajd.exe start
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2964
- - C:\ProgramData\nkvj\cgajd.exe
    C:\ProgramData\nkvj\cgajd.exe start
    3⤵
    - Executes dropped EXE
    PID:2904

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\nkvj\cgajd.exe

Filesize
350KB

MD5
0dc61438b79668900bd081bac6109760

SHA1
2ee66fd972c2d28ad30775971ba95056951910f0

SHA256
318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd

SHA512
467b352ce6188e6126050c229cd47b526e83ef3535449c3f02b70491e159523d7cc8ebb28caab4e8d98627a22a0af1faf13b134072309dfe56ad175d18177ca7

Download Submit
memory/2044-1-0x0000000000DE0000-0x0000000000EE0000-memory.dmp

Filesize
1024KB

Download
memory/2044-2-0x0000000000020000-0x000000000002A000-memory.dmp

Filesize
40KB

Download
memory/2192-21-0x0000000000271000-0x0000000000277000-memory.dmp

Filesize
24KB

Download
memory/2520-5-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2520-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2520-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2520-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2848-17-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download