systembc | fe9c809037f44ae90bb094ab94481e3cfc42d286ce90eb1e4e19e44268537424

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
29-07-2024 05:52

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General

Target

3a1fd8df0d5c55c3a72c86819f6a0679_JaffaCakes118.exe
Size

168KB
MD5

3a1fd8df0d5c55c3a72c86819f6a0679
SHA1

1ee6d5be78509a0ccaf7194d9eee36f12d6e8ea4
SHA256

fe9c809037f44ae90bb094ab94481e3cfc42d286ce90eb1e4e19e44268537424
SHA512

5d4e7eef1a4e5c3f498d4e24dc53566b8357d0e7b05eeef01449f8a9be2eed72822dfcd9190a3b1d90056522cbc5a1961e5e5f039e6ff19cc62fb9d97c5e7e0b
SSDEEP

3072:F6N7CSt27vt+Ma/lDphLMzPpoVVqQ2rMo/XTpQXpfWXk:07CD/CNh4zCVN2rMWjesX

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
2736	xfmqcx.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

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\xfmqcx.job	3a1fd8df0d5c55c3a72c86819f6a0679_JaffaCakes118.exe
File opened for modification	C:\Windows\Tasks\xfmqcx.job	3a1fd8df0d5c55c3a72c86819f6a0679_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	3a1fd8df0d5c55c3a72c86819f6a0679_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xfmqcx.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2020	3a1fd8df0d5c55c3a72c86819f6a0679_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2660 wrote to memory of 2736	2660	taskeng.exe	31
PID 2660 wrote to memory of 2736	2660	taskeng.exe	31
PID 2660 wrote to memory of 2736	2660	taskeng.exe	31
PID 2660 wrote to memory of 2736	2660	taskeng.exe	31

C:\Users\Admin\AppData\Local\Temp\3a1fd8df0d5c55c3a72c86819f6a0679_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\3a1fd8df0d5c55c3a72c86819f6a0679_JaffaCakes118.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:2020

C:\Windows\system32\taskeng.exe
taskeng.exe {7FB4EE53-0216-43D4-8999-94D3CCC3118A} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:2660
- C:\ProgramData\sksc\xfmqcx.exe
  C:\ProgramData\sksc\xfmqcx.exe start
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2736

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

Replay Monitor

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Downloads

C:\ProgramData\sksc\xfmqcx.exe

Filesize
168KB

MD5
3a1fd8df0d5c55c3a72c86819f6a0679

SHA1
1ee6d5be78509a0ccaf7194d9eee36f12d6e8ea4

SHA256
fe9c809037f44ae90bb094ab94481e3cfc42d286ce90eb1e4e19e44268537424

SHA512
5d4e7eef1a4e5c3f498d4e24dc53566b8357d0e7b05eeef01449f8a9be2eed72822dfcd9190a3b1d90056522cbc5a1961e5e5f039e6ff19cc62fb9d97c5e7e0b

Download Submit
memory/2020-3-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2020-2-0x0000000000220000-0x0000000000229000-memory.dmp

Filesize
36KB

Download
memory/2020-1-0x0000000006170000-0x0000000006270000-memory.dmp

Filesize
1024KB

Download
memory/2020-4-0x0000000000400000-0x0000000005FCC000-memory.dmp

Filesize
91.8MB

Download
memory/2020-13-0x0000000006170000-0x0000000006270000-memory.dmp

Filesize
1024KB

Download
memory/2736-12-0x0000000000400000-0x0000000005FCC000-memory.dmp

Filesize
91.8MB

Download