cycbot | 8d28eddc2a2257e13c2f2e1fb1b65dd8f562a8b4c32f57affcbd73db752d303d

General

Target

JaffaCakes118_97bb3a4ee9d41b40b899452442abf040.exe
Size

177KB
MD5

97bb3a4ee9d41b40b899452442abf040
SHA1

054ad10124611696061a1a227e9b99ccc87dc22a
SHA256

8d28eddc2a2257e13c2f2e1fb1b65dd8f562a8b4c32f57affcbd73db752d303d
SHA512

b788bcf6c87839ed624f70adb72f8b532cef2f54961cb6038bba13ad76f98358e91703c05ff121c47e33325df8c032da2e167af1946615eab88324205aff3216
SSDEEP

3072:vpXyJRPSPGs7VDy7symIXtSMayovDlpMLTMheUOTKzhQKiWJhLf0QC09/:RiLoVpQXthQDnMmepezDxfZNV

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 6 IoCs

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

resource	yara_rule
behavioral1/memory/2208-8-0x0000000000400000-0x0000000000485000-memory.dmp	family_cycbot
behavioral1/memory/684-15-0x0000000000400000-0x0000000000485000-memory.dmp	family_cycbot
behavioral1/memory/2156-79-0x0000000000400000-0x0000000000485000-memory.dmp	family_cycbot
behavioral1/memory/684-80-0x0000000000400000-0x0000000000485000-memory.dmp	family_cycbot
behavioral1/memory/684-169-0x0000000000400000-0x0000000000485000-memory.dmp	family_cycbot
behavioral1/memory/684-202-0x0000000000400000-0x0000000000485000-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-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_97bb3a4ee9d41b40b899452442abf040.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/684-2-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral1/memory/2208-5-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral1/memory/2208-8-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral1/memory/2208-7-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral1/memory/684-15-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral1/memory/2156-79-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral1/memory/684-80-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral1/memory/684-169-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral1/memory/684-202-0x0000000000400000-0x0000000000485000-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_97bb3a4ee9d41b40b899452442abf040.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_97bb3a4ee9d41b40b899452442abf040.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_97bb3a4ee9d41b40b899452442abf040.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 684 wrote to memory of 2208	684	JaffaCakes118_97bb3a4ee9d41b40b899452442abf040.exe	30
PID 684 wrote to memory of 2208	684	JaffaCakes118_97bb3a4ee9d41b40b899452442abf040.exe	30
PID 684 wrote to memory of 2208	684	JaffaCakes118_97bb3a4ee9d41b40b899452442abf040.exe	30
PID 684 wrote to memory of 2208	684	JaffaCakes118_97bb3a4ee9d41b40b899452442abf040.exe	30
PID 684 wrote to memory of 2156	684	JaffaCakes118_97bb3a4ee9d41b40b899452442abf040.exe	33
PID 684 wrote to memory of 2156	684	JaffaCakes118_97bb3a4ee9d41b40b899452442abf040.exe	33
PID 684 wrote to memory of 2156	684	JaffaCakes118_97bb3a4ee9d41b40b899452442abf040.exe	33
PID 684 wrote to memory of 2156	684	JaffaCakes118_97bb3a4ee9d41b40b899452442abf040.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_97bb3a4ee9d41b40b899452442abf040.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_97bb3a4ee9d41b40b899452442abf040.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:684
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_97bb3a4ee9d41b40b899452442abf040.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_97bb3a4ee9d41b40b899452442abf040.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2208
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_97bb3a4ee9d41b40b899452442abf040.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_97bb3a4ee9d41b40b899452442abf040.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2156

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\FC0B.C59

Filesize
1KB

MD5
1dc6095709a754f43f0ef3f5452ba31a

SHA1
206e7b7c91eb25fcf0acda587b5db64d6e0d77d9

SHA256
0ad7ce5c6905fb964191cb241b955df25b318188c1fbf043e6f4b35d6b0101cb

SHA512
6fbb44680e04648f86d6b6ae9efe200dda293c51ee84b1f4e80de46815f12fd8811412393beb5b3c036e3c3994b0cb53057f59aeea5726f8b9957d343a4c4b2b

Download Submit
C:\Users\Admin\AppData\Roaming\FC0B.C59

Filesize
600B

MD5
c9a8032a2ee62846ae57b738b6eb3522

SHA1
b09d7efaf805e898e0390946be4b95e84f7b3188

SHA256
a93bfb315636623a41fcb6dc8a2b217750dd42b6d5d53eec8ba79ec1eefdd0d4

SHA512
1871448c5f0a2cba4ba188de1682d9cf8462c6765f00bf113498a851d571f0420db92183ed7328f10970cd110cff19fe5def2f65d1414841e6c9f60d7d0a3290

Download Submit
C:\Users\Admin\AppData\Roaming\FC0B.C59

Filesize
996B

MD5
53dd7b848fbebb69a685ece04751ae09

SHA1
948332dccacecfe40c0f2c3f8d2bca935187f570

SHA256
001ba8b32a9ba23614feae9f1a3d5183a198fe2c757278316b9bc0bf814ccc5d

SHA512
09c3d3a1c2ac989b1aa3c3a8010ac28211a47c86d07a9d1fd83995cc6ae18d3b89b2466a09e66eb29ac4b367a79c84a68fb42320b3d11cf7d117ca54c3c47e16

Download Submit
memory/684-15-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/684-80-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/684-1-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/684-2-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/684-169-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/684-202-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/2156-79-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/2208-8-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/2208-7-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/2208-5-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads