cycbot | 4b65d6be2cc5c3b968296837147ca2812e243c88ccf44a03e9c4188f38b9f5bc

General

Target

JaffaCakes118_5580849d3baddef79ca41fa7c37a1b13.exe
Size

190KB
MD5

5580849d3baddef79ca41fa7c37a1b13
SHA1

045b7a38141b534d8181d5dd1b936403d462f74a
SHA256

4b65d6be2cc5c3b968296837147ca2812e243c88ccf44a03e9c4188f38b9f5bc
SHA512

4e29115e94ebcbf9818ba9b0afded7af26dab0b3b9c9db55c8732f350ab3eb07b3a09c741802f385615b745ec44c4ed812a991c28188ac367c460b55f6460215
SSDEEP

3072:TzDC1FEbCXAGj19vWQ5A9ZqbuhRnIGxIqUfwY3FM65fjLg9UdqPX6rQNNTeP4Si5:HDC1F0CXVnWQnuMGaoY3F15ffVqCeNTR

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/2264-5-0x0000000000400000-0x000000000046B000-memory.dmp	family_cycbot
behavioral1/memory/1880-13-0x0000000000400000-0x000000000046B000-memory.dmp	family_cycbot
behavioral1/memory/1356-71-0x0000000000400000-0x000000000046B000-memory.dmp	family_cycbot
behavioral1/memory/1880-73-0x0000000000400000-0x000000000046B000-memory.dmp	family_cycbot
behavioral1/memory/1880-162-0x0000000000400000-0x000000000046B000-memory.dmp	family_cycbot
behavioral1/memory/1880-197-0x0000000000400000-0x000000000046B000-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-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_5580849d3baddef79ca41fa7c37a1b13.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 8 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1880-2-0x0000000000400000-0x000000000046B000-memory.dmp	upx
behavioral1/memory/2264-5-0x0000000000400000-0x000000000046B000-memory.dmp	upx
behavioral1/memory/1880-13-0x0000000000400000-0x000000000046B000-memory.dmp	upx
behavioral1/memory/1356-72-0x0000000000400000-0x000000000046B000-memory.dmp	upx
behavioral1/memory/1356-71-0x0000000000400000-0x000000000046B000-memory.dmp	upx
behavioral1/memory/1880-73-0x0000000000400000-0x000000000046B000-memory.dmp	upx
behavioral1/memory/1880-162-0x0000000000400000-0x000000000046B000-memory.dmp	upx
behavioral1/memory/1880-197-0x0000000000400000-0x000000000046B000-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_5580849d3baddef79ca41fa7c37a1b13.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_5580849d3baddef79ca41fa7c37a1b13.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_5580849d3baddef79ca41fa7c37a1b13.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1880 wrote to memory of 2264	1880	JaffaCakes118_5580849d3baddef79ca41fa7c37a1b13.exe	31
PID 1880 wrote to memory of 2264	1880	JaffaCakes118_5580849d3baddef79ca41fa7c37a1b13.exe	31
PID 1880 wrote to memory of 2264	1880	JaffaCakes118_5580849d3baddef79ca41fa7c37a1b13.exe	31
PID 1880 wrote to memory of 2264	1880	JaffaCakes118_5580849d3baddef79ca41fa7c37a1b13.exe	31
PID 1880 wrote to memory of 1356	1880	JaffaCakes118_5580849d3baddef79ca41fa7c37a1b13.exe	33
PID 1880 wrote to memory of 1356	1880	JaffaCakes118_5580849d3baddef79ca41fa7c37a1b13.exe	33
PID 1880 wrote to memory of 1356	1880	JaffaCakes118_5580849d3baddef79ca41fa7c37a1b13.exe	33
PID 1880 wrote to memory of 1356	1880	JaffaCakes118_5580849d3baddef79ca41fa7c37a1b13.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5580849d3baddef79ca41fa7c37a1b13.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5580849d3baddef79ca41fa7c37a1b13.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1880
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5580849d3baddef79ca41fa7c37a1b13.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5580849d3baddef79ca41fa7c37a1b13.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2264
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5580849d3baddef79ca41fa7c37a1b13.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5580849d3baddef79ca41fa7c37a1b13.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1356

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\4700.9DD

Filesize
1KB

MD5
1f9d175b85a7a47d1c8a4f0d0b4f2fcc

SHA1
82d72133f082fd86fc11dc50726a0d9c73f4dfda

SHA256
450bb037befd0b6d4e260f299c3b03a5eaadec3065ecb3943644bb36a14f0612

SHA512
108dd1eb10175726db71dc9d01016a58ddc801552cf568f53498520a83a5b98e4f960df16ffa7780b6210e938b0fa00c62a61c7944275f823c2fa72d192a4ec1

Download Submit
C:\Users\Admin\AppData\Roaming\4700.9DD

Filesize
600B

MD5
229c911e717ea5b0b617eb31a99e0c2e

SHA1
059e545bf76f6f32fd34215cac9751bce34a99db

SHA256
fe7829fc225f23ea16ab2ee207598912f6f419a06cdd0890a3797fc8cde3ebee

SHA512
ef00ef66cdc5452bc0963a006becff10dc8fa5e34f8be4e93f521988558181e4376a4939814d4c510dcf30f8a1e9a6bcc5b7bad1c782dfc2f3b839cfc12b10c3

Download Submit
C:\Users\Admin\AppData\Roaming\4700.9DD

Filesize
996B

MD5
986e7c696837d68b827df8727b733b72

SHA1
b66143b7b28e64b4730baa33054a4d3792998f4d

SHA256
cb22dc79e246360004f0111787f6bb53a75d97b53e0b5a744ad928ddd543c521

SHA512
aa9275bb2955b53f011a2b8d9ff26e2c7997de466b896240357d591d282aefd6d08ef23e976ce4e6755304c58d3acf947f420ec8b237993c5ed75b29a28e7a9d

Download Submit
memory/1356-72-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/1356-71-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/1880-1-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/1880-2-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/1880-13-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/1880-73-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/1880-162-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/1880-197-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/2264-5-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads