systembc | dba174d5ff22c6f4b3969a5dfd3dd66026a4f60d6ec73f5105c312f66ec2a6af

Analysis

max time kernel
150s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
29-07-2024 17:32

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General

Target

55b4e7ffb50c61e3f44b6af2f360f8b6_JaffaCakes118.exe
Size

236KB
MD5

55b4e7ffb50c61e3f44b6af2f360f8b6
SHA1

b0760a08794565ef5f03512ead50ec6ca2f0ca40
SHA256

dba174d5ff22c6f4b3969a5dfd3dd66026a4f60d6ec73f5105c312f66ec2a6af
SHA512

879fd56dcb0c74cb316e411474ea5e134ad819d19f0b1288941756fb47a6da9ce88ad3a5abac54ba86a0cab1de7fc41ffe05faa3e0f05623d8f5c74d18d7e2fd
SSDEEP

3072:Y8AZJhoX+SWywcu/cSQsUwSz508dMW8dEONo3C5eeFJ1kgEb5VsPHgh:YZJeXNFpz5ri7W31eFJQbof+

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
3980	nefpgh.exe

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
29	api.ipify.org
30	api.ipify.org

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\nefpgh.job	55b4e7ffb50c61e3f44b6af2f360f8b6_JaffaCakes118.exe
File opened for modification	C:\Windows\Tasks\nefpgh.job	55b4e7ffb50c61e3f44b6af2f360f8b6_JaffaCakes118.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4664	1388	WerFault.exe	83

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	55b4e7ffb50c61e3f44b6af2f360f8b6_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nefpgh.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1388	55b4e7ffb50c61e3f44b6af2f360f8b6_JaffaCakes118.exe
1388	55b4e7ffb50c61e3f44b6af2f360f8b6_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\55b4e7ffb50c61e3f44b6af2f360f8b6_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\55b4e7ffb50c61e3f44b6af2f360f8b6_JaffaCakes118.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:1388
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1388 -s 480
  2⤵
  - Program crash
  PID:4664

C:\ProgramData\vmixt\nefpgh.exe
C:\ProgramData\vmixt\nefpgh.exe start
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3980

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1388 -ip 1388
1⤵
PID:3916

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

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Downloads

C:\ProgramData\vmixt\nefpgh.exe

Filesize
236KB

MD5
55b4e7ffb50c61e3f44b6af2f360f8b6

SHA1
b0760a08794565ef5f03512ead50ec6ca2f0ca40

SHA256
dba174d5ff22c6f4b3969a5dfd3dd66026a4f60d6ec73f5105c312f66ec2a6af

SHA512
879fd56dcb0c74cb316e411474ea5e134ad819d19f0b1288941756fb47a6da9ce88ad3a5abac54ba86a0cab1de7fc41ffe05faa3e0f05623d8f5c74d18d7e2fd

Download Submit
memory/1388-2-0x00000000001C0000-0x00000000001C9000-memory.dmp

Filesize
36KB

Download
memory/1388-1-0x0000000004F50000-0x0000000005050000-memory.dmp

Filesize
1024KB

Download
memory/1388-3-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1388-4-0x0000000000400000-0x0000000004DDE000-memory.dmp

Filesize
73.9MB

Download
memory/1388-15-0x00000000001C0000-0x00000000001C9000-memory.dmp

Filesize
36KB

Download
memory/1388-14-0x0000000004F50000-0x0000000005050000-memory.dmp

Filesize
1024KB

Download
memory/1388-16-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3980-12-0x0000000000400000-0x0000000004DDE000-memory.dmp

Filesize
73.9MB

Download