systembc | 38373950a7348876d1a81cd11f1d6e4737e4da3361b667c0582ae29f809ee284

Analysis

max time kernel
145s
max time network
148s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
11-01-2025 06:55

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General

Target

JaffaCakes118_fa1bbe98e6ecfc6ac3e8e9c881a7532a.exe
Size

223KB
MD5

fa1bbe98e6ecfc6ac3e8e9c881a7532a
SHA1

ad8c8eeb74166e9283e2afd8d2f2ddeb58f7219b
SHA256

38373950a7348876d1a81cd11f1d6e4737e4da3361b667c0582ae29f809ee284
SHA512

703979a1e384a032e03e34415c4101fd32d094805b68ab1509a28fb71a1ef4bf4ae8e6483530e8dd7ca63da55f62d063e921e2622b4385b29cb0dc54eb20a4f1
SSDEEP

3072:CWh1e6j5yA5WsWKrm606qIVxQe1763M/+w+CNf4/AWaSkSJu98vd:7e6j5yAfNF5Vt17vWaIADG8el

Score

10^/10

systembc discovery trojan

Malware Config

Extracted

Family

systembc

185.173.39.49:4001

Signatures

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

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\wow64.job	JaffaCakes118_fa1bbe98e6ecfc6ac3e8e9c881a7532a.exe
File opened for modification	C:\Windows\Tasks\wow64.job	JaffaCakes118_fa1bbe98e6ecfc6ac3e8e9c881a7532a.exe

System Location Discovery: System Language Discovery 1 TTPs 1 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	JaffaCakes118_fa1bbe98e6ecfc6ac3e8e9c881a7532a.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2084 wrote to memory of 2264	2084	taskeng.exe	32
PID 2084 wrote to memory of 2264	2084	taskeng.exe	32
PID 2084 wrote to memory of 2264	2084	taskeng.exe	32
PID 2084 wrote to memory of 2264	2084	taskeng.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fa1bbe98e6ecfc6ac3e8e9c881a7532a.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fa1bbe98e6ecfc6ac3e8e9c881a7532a.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:1696

C:\Windows\system32\taskeng.exe
taskeng.exe {962799B3-E01D-44F1-862F-9DFFEC83AD4C} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:2084
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fa1bbe98e6ecfc6ac3e8e9c881a7532a.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fa1bbe98e6ecfc6ac3e8e9c881a7532a.exe start
  2⤵
  PID:2264

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

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Downloads

memory/1696-0-0x0000000000220000-0x0000000000226000-memory.dmp

Filesize
24KB

Download
memory/1696-1-0x00000000002B0000-0x00000000002B5000-memory.dmp

Filesize
20KB

Download
memory/1696-2-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/1696-6-0x0000000000220000-0x0000000000226000-memory.dmp

Filesize
24KB

Download
memory/1696-5-0x0000000000400000-0x0000000002EFE000-memory.dmp

Filesize
43.0MB

Download
memory/1696-7-0x00000000002B0000-0x00000000002B5000-memory.dmp

Filesize
20KB

Download
memory/2264-8-0x0000000000400000-0x0000000002EFE000-memory.dmp

Filesize
43.0MB

Download