cycbot | c23c3bb2ca149de01aa29b97c70729b6731cca2d9e4078a041472880c3fe1c33

General

Target

JaffaCakes118_5191704b32ccd272c2de38d5bd5c7b42.exe
Size

169KB
MD5

5191704b32ccd272c2de38d5bd5c7b42
SHA1

a90517ee06f3228b905f84267d5aeb622e471524
SHA256

c23c3bb2ca149de01aa29b97c70729b6731cca2d9e4078a041472880c3fe1c33
SHA512

5f7f6edadcbdf7f0b54ed6e4b8cbc201401e25be588bf63dd1903e628ff7b50880c1e74867787dde97cdec1d7358e0f589ba239d5512161c85d8359848592d8f
SSDEEP

3072:f/9h/w5RrC4LLxMSYjldWD0+n6IyjdAJD5L+cgFCNfmNFFbdsbff3sRo5c:n9Rw5R24LLySYjjjaem5ikGvRSs3

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 5 IoCs

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

resource	yara_rule
behavioral1/memory/2944-7-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/2692-15-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/2584-78-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/2692-149-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/2692-189-0x0000000000400000-0x000000000046A000-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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_5191704b32ccd272c2de38d5bd5c7b42.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/2692-2-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2944-5-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2944-6-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2944-7-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2692-15-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2584-76-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2584-78-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2692-149-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2692-189-0x0000000000400000-0x000000000046A000-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_5191704b32ccd272c2de38d5bd5c7b42.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_5191704b32ccd272c2de38d5bd5c7b42.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_5191704b32ccd272c2de38d5bd5c7b42.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2692 wrote to memory of 2944	2692	JaffaCakes118_5191704b32ccd272c2de38d5bd5c7b42.exe	30
PID 2692 wrote to memory of 2944	2692	JaffaCakes118_5191704b32ccd272c2de38d5bd5c7b42.exe	30
PID 2692 wrote to memory of 2944	2692	JaffaCakes118_5191704b32ccd272c2de38d5bd5c7b42.exe	30
PID 2692 wrote to memory of 2944	2692	JaffaCakes118_5191704b32ccd272c2de38d5bd5c7b42.exe	30
PID 2692 wrote to memory of 2584	2692	JaffaCakes118_5191704b32ccd272c2de38d5bd5c7b42.exe	32
PID 2692 wrote to memory of 2584	2692	JaffaCakes118_5191704b32ccd272c2de38d5bd5c7b42.exe	32
PID 2692 wrote to memory of 2584	2692	JaffaCakes118_5191704b32ccd272c2de38d5bd5c7b42.exe	32
PID 2692 wrote to memory of 2584	2692	JaffaCakes118_5191704b32ccd272c2de38d5bd5c7b42.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5191704b32ccd272c2de38d5bd5c7b42.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5191704b32ccd272c2de38d5bd5c7b42.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2692
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5191704b32ccd272c2de38d5bd5c7b42.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5191704b32ccd272c2de38d5bd5c7b42.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2944
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5191704b32ccd272c2de38d5bd5c7b42.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5191704b32ccd272c2de38d5bd5c7b42.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2584

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

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Downloads

C:\Users\Admin\AppData\Roaming\07C4.50F

Filesize
600B

MD5
7effecfdc44a8d5b0a34a9681a9e7ccb

SHA1
12aea3615149be4cebd92f1c573574d460897fb0

SHA256
867f70db1319240ef4fbea4c5a96155f02307b865d3349076db37f643c894dfe

SHA512
a56d286bf2e0d3b36e11f8a68f0f793b3b673a15c42b19627075a2c01478e44759ba2088059f9c7d757cb304da3c14ef8d7e990685730be8076af5a8ed16f01c

Download Submit
C:\Users\Admin\AppData\Roaming\07C4.50F

Filesize
1KB

MD5
f25cf2a4e1b6a8140d9d9b665c86638c

SHA1
09aeb5d803544ba480099af4f3a33a9838d9c2d0

SHA256
2b9ac0c67f0f5f3d43e821fc18ffd19ada872ad37a09234c0e7b8f35abd9a4c2

SHA512
6625e5277872549e275240c1cdc205d308c9f3235b3fd4e8cfb228959a30d36489c2fd3629e4832fdc9e7420e22e32156c66d75b1f7dbb1076301c1b616a1e1d

Download Submit
C:\Users\Admin\AppData\Roaming\07C4.50F

Filesize
996B

MD5
3414f27c2ad361329764013b6f6004f2

SHA1
d02d2fbcb2494f90d64dc01f5497a5ac2afd95a2

SHA256
c2bb06334d9d4d84b6f28a2adb3dd7f1f6542b265342574f6c11a03ba5ff402e

SHA512
3f9f5a032b771287a30b915e26fe3a8e641a9ab54da9ddb6ec2d60fe7bcc81fc5a28f6fe97226f2a87f51bfa0ecb830c6db8d2e06f3bc454525101a3b4bfcf8b

Download Submit
memory/2584-78-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2584-76-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2692-15-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2692-1-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2692-2-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2692-149-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2692-189-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2944-7-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2944-6-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2944-5-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads