cycbot | 696402889b6b3e16e8d89e2b446a506c06d11d9c60ad3548ec6329475eec1dec

General

Target

JaffaCakes118_87fb8136431cdd5eb3893584acc30e6d.exe
Size

167KB
MD5

87fb8136431cdd5eb3893584acc30e6d
SHA1

b72c3d11bd58d245a4532d2644abd7369b4abe75
SHA256

696402889b6b3e16e8d89e2b446a506c06d11d9c60ad3548ec6329475eec1dec
SHA512

20ba019b527ddfc54da315f842e8c9fac2c63d3927d572f852b12600312125919e208175c6024a58337b1b89104a025b3246758825543991aa94da47d7c796ca
SSDEEP

3072:5C2W94EaIwgHPFaE+pWouiUEu9lLSxScXXV0AvLn9X5gHazbhefydIce:V3EF+pWqUtlmjXxDn9pWebAfsH

Score

10^/10

cycbot backdoor discovery persistence rat spyware stealer upx

Malware Config

Signatures

Cycbot
Cycbot is a backdoor and trojan written in C++..
backdoor rat cycbot
Cycbot family
cycbot

Detects Cycbot payload 7 IoCs

Cycbot is a backdoor and trojan written in C++.

resource	yara_rule
behavioral1/memory/2456-8-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2456-6-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2732-16-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2960-96-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2960-94-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2732-97-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2732-207-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_87fb8136431cdd5eb3893584acc30e6d.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

UPX packed file 9 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2732-2-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2456-5-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2456-8-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2456-6-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2732-16-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2960-96-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2960-94-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2732-97-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2732-207-0x0000000000400000-0x000000000048A000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 3 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_87fb8136431cdd5eb3893584acc30e6d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_87fb8136431cdd5eb3893584acc30e6d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_87fb8136431cdd5eb3893584acc30e6d.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2732 wrote to memory of 2456	2732	JaffaCakes118_87fb8136431cdd5eb3893584acc30e6d.exe	30
PID 2732 wrote to memory of 2456	2732	JaffaCakes118_87fb8136431cdd5eb3893584acc30e6d.exe	30
PID 2732 wrote to memory of 2456	2732	JaffaCakes118_87fb8136431cdd5eb3893584acc30e6d.exe	30
PID 2732 wrote to memory of 2456	2732	JaffaCakes118_87fb8136431cdd5eb3893584acc30e6d.exe	30
PID 2732 wrote to memory of 2960	2732	JaffaCakes118_87fb8136431cdd5eb3893584acc30e6d.exe	32
PID 2732 wrote to memory of 2960	2732	JaffaCakes118_87fb8136431cdd5eb3893584acc30e6d.exe	32
PID 2732 wrote to memory of 2960	2732	JaffaCakes118_87fb8136431cdd5eb3893584acc30e6d.exe	32
PID 2732 wrote to memory of 2960	2732	JaffaCakes118_87fb8136431cdd5eb3893584acc30e6d.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_87fb8136431cdd5eb3893584acc30e6d.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_87fb8136431cdd5eb3893584acc30e6d.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2732
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_87fb8136431cdd5eb3893584acc30e6d.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_87fb8136431cdd5eb3893584acc30e6d.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2456
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_87fb8136431cdd5eb3893584acc30e6d.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_87fb8136431cdd5eb3893584acc30e6d.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2960

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\9EA2.3F8

Filesize
1KB

MD5
34e65456c9d4e3622c9952952c378cd4

SHA1
603e11d83dee5271fe0fab5ec09ce0ccec080481

SHA256
e491640caae61f1769ee7acbc5aeb7239abb2ad2f7f9faabffc200da68b9078a

SHA512
412f07af5120fa896345760b9356816a5e85409caa9a345490eb7263f10d417c2ab60c747e51eaeb1c479dca55c80cea577419ebc29a4e66a8d39b94b08177d2

Download Submit
C:\Users\Admin\AppData\Roaming\9EA2.3F8

Filesize
600B

MD5
3263fa3a36e175a8e9936c108f223c03

SHA1
5a664298ae0044c6fa47b7c4492c46c44c9c0193

SHA256
e18420c56c8f866a13bcef6365e182822caff29492f910f591279a656e8052fd

SHA512
68bb8c33176f80f7ea693b2e62ff1e1d4e4b8db2cc3df33a0f7338f501ee246ceb4ca937cd0a47690b3f2f23166041c3cd1bbcdb2ae980f2c77c82eefb4996c0

Download Submit
C:\Users\Admin\AppData\Roaming\9EA2.3F8

Filesize
996B

MD5
9a88d5bd39bcbd7f095e898a056dcd91

SHA1
1e3cb90ee0da5a9b8a488b996e6aff264275b4e0

SHA256
54d4f76ad5339ad572c7e4772df491c071ebd617a90b6ced0d339b89ede2ec95

SHA512
f2a27a6ed4280514c9b4b126228061a065ad536c2e94b3e35863a4f76611ea5728143df997266831f4334a4dc3221a380100d39512c10c41aebdcae273b0b3e7

Download Submit
memory/2456-8-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2456-6-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2456-5-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2732-16-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2732-1-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2732-97-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2732-2-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2732-207-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2960-93-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2960-96-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2960-94-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads