systembc | 6f33157f6cb11b56825af6bcae539938574116e59a4b95c1e90c8560e386d2b1

Analysis

max time kernel
141s
max time network
148s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
07-01-2025 00:03

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General

Target

JaffaCakes118_421baa0323a230ca71d7ab70ec63ee8b.exe
Size

284KB
MD5

421baa0323a230ca71d7ab70ec63ee8b
SHA1

ff65959682ba1f90605c0656c3b27ddd32a02abe
SHA256

6f33157f6cb11b56825af6bcae539938574116e59a4b95c1e90c8560e386d2b1
SHA512

7bdb8c712a5bb739c8c428fef98fe4accb1d183a6dab23c0885a70fe2ac7d495a9208ece7a8fad56df2808da485760b54336a4d46813ccf7de4c038b3c7397eb
SSDEEP

6144:ynkNfhTgg/aHh/cXG7qU/YvGbEFy5pIV0y0tLojI0z7v:KkxGpBWWzgvQdpol0tLoTX

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_421baa0323a230ca71d7ab70ec63ee8b.exe
File opened for modification	C:\Windows\Tasks\wow64.job	JaffaCakes118_421baa0323a230ca71d7ab70ec63ee8b.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_421baa0323a230ca71d7ab70ec63ee8b.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1956 wrote to memory of 2896	1956	taskeng.exe	31
PID 1956 wrote to memory of 2896	1956	taskeng.exe	31
PID 1956 wrote to memory of 2896	1956	taskeng.exe	31
PID 1956 wrote to memory of 2896	1956	taskeng.exe	31

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_421baa0323a230ca71d7ab70ec63ee8b.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_421baa0323a230ca71d7ab70ec63ee8b.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:2312

C:\Windows\system32\taskeng.exe
taskeng.exe {FC0A4337-EA5F-444A-8B8C-C34E2B6637BD} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:1956
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_421baa0323a230ca71d7ab70ec63ee8b.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_421baa0323a230ca71d7ab70ec63ee8b.exe start
  2⤵
  PID:2896

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

memory/2312-1-0x00000000002B0000-0x00000000003B0000-memory.dmp

Filesize
1024KB

Download
memory/2312-3-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/2312-2-0x0000000000020000-0x0000000000025000-memory.dmp

Filesize
20KB

Download
memory/2312-9-0x00000000002B0000-0x00000000003B0000-memory.dmp

Filesize
1024KB

Download
memory/2312-10-0x0000000000020000-0x0000000000025000-memory.dmp

Filesize
20KB

Download
memory/2312-11-0x0000000000400000-0x0000000000877000-memory.dmp

Filesize
4.5MB

Download
memory/2896-7-0x0000000000400000-0x0000000000877000-memory.dmp

Filesize
4.5MB

Download
memory/2896-8-0x0000000000400000-0x0000000000877000-memory.dmp

Filesize
4.5MB

Download