cycbot | 3cb2a63bfeab8a67731332b7f61675aa13344d26445e8df2932fcc790d0f314b

General

Target

e8093b46dddc0bcba074968e5a6b33c5_JaffaCakes118.exe
Size

172KB
MD5

e8093b46dddc0bcba074968e5a6b33c5
SHA1

934dbc167f20e6f592b193db0f2532aecbdd1004
SHA256

3cb2a63bfeab8a67731332b7f61675aa13344d26445e8df2932fcc790d0f314b
SHA512

d6171bd08aae1e7b967da1c5ea0aa321ead3d26910bcfc089df4f8191892ef76a9f609cbf9896e3ed79803b7870febe723bb1582dcc45a2c1b1007b6db8c2ac3
SSDEEP

3072:MNWW+DLaq5zn1w6+/Mdpt2l2Ha8YExPeOWL9YpW8Q4LGWF9wh7hN6cK9XGWDoIkR:MNfMLaUeYd4268YEWOWBYg+gthN6cK9g

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/524-5-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/524-7-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/1732-15-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/2576-78-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/2576-80-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/1732-81-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/1732-189-0x0000000000400000-0x000000000046A000-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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	e8093b46dddc0bcba074968e5a6b33c5_JaffaCakes118.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/1732-2-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/1732-1-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/524-5-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/524-7-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/1732-15-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2576-78-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2576-80-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/1732-81-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/1732-189-0x0000000000400000-0x000000000046A000-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	e8093b46dddc0bcba074968e5a6b33c5_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e8093b46dddc0bcba074968e5a6b33c5_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e8093b46dddc0bcba074968e5a6b33c5_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1732 wrote to memory of 524	1732	e8093b46dddc0bcba074968e5a6b33c5_JaffaCakes118.exe	31
PID 1732 wrote to memory of 524	1732	e8093b46dddc0bcba074968e5a6b33c5_JaffaCakes118.exe	31
PID 1732 wrote to memory of 524	1732	e8093b46dddc0bcba074968e5a6b33c5_JaffaCakes118.exe	31
PID 1732 wrote to memory of 524	1732	e8093b46dddc0bcba074968e5a6b33c5_JaffaCakes118.exe	31
PID 1732 wrote to memory of 2576	1732	e8093b46dddc0bcba074968e5a6b33c5_JaffaCakes118.exe	33
PID 1732 wrote to memory of 2576	1732	e8093b46dddc0bcba074968e5a6b33c5_JaffaCakes118.exe	33
PID 1732 wrote to memory of 2576	1732	e8093b46dddc0bcba074968e5a6b33c5_JaffaCakes118.exe	33
PID 1732 wrote to memory of 2576	1732	e8093b46dddc0bcba074968e5a6b33c5_JaffaCakes118.exe	33

C:\Users\Admin\AppData\Local\Temp\e8093b46dddc0bcba074968e5a6b33c5_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e8093b46dddc0bcba074968e5a6b33c5_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1732
- C:\Users\Admin\AppData\Local\Temp\e8093b46dddc0bcba074968e5a6b33c5_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\e8093b46dddc0bcba074968e5a6b33c5_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:524
- C:\Users\Admin\AppData\Local\Temp\e8093b46dddc0bcba074968e5a6b33c5_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\e8093b46dddc0bcba074968e5a6b33c5_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2576

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

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Downloads

C:\Users\Admin\AppData\Roaming\BE7A.F18

Filesize
1KB

MD5
0fdfaf620e866622202051bbae71151f

SHA1
5617dcf219a80b4540db5fd589c87872ea7594fe

SHA256
ac2e13d18a685b769469d8f56e7023dd9091c11de723eda9a1e235f9c340b6e8

SHA512
08693b57c5d741d068c6ac881c7993f18864a7fc7326ed2d189e18341072d27be2aa02e8a23ab5ebffe6cc2a84f5e38d2f82661550702c646bdb4202cd17ec10

Download Submit
C:\Users\Admin\AppData\Roaming\BE7A.F18

Filesize
600B

MD5
56cb70f7dec497f24531c168e52280ff

SHA1
28ba6809be1a04a70859f93ccc43f89965ad1704

SHA256
b1d84ce4ff742f296edb137cc13b3bdf3723d44535e1793884428e5fe95603f1

SHA512
456d7e261d514a0ee95203209c376e17c3a7fb3a760cb36822b497528daf1f7058953de996d809f010fb5f2f7746ba306d85b1b236aa6cc360311a3b4682ab1d

Download Submit
C:\Users\Admin\AppData\Roaming\BE7A.F18

Filesize
996B

MD5
4085f840ced7ea09656d9643caa1bf59

SHA1
827d93fb9255acdb2fa6055b60a3429cb4c7ba70

SHA256
acba641b2bc3ff638b36ab4916326fa22346c052760fdaa926b301c76b985a63

SHA512
8c6b42b16b69c5de426e547377c33e9df7806bba18cb43db2ea789a0c3eb3624f20e75281af75228c29ef7b3b2d423edeae1bf6ceed4c69ee26b3b26bd718cfd

Download Submit
memory/524-5-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/524-7-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/1732-81-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/1732-2-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/1732-15-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/1732-1-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/1732-189-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2576-77-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2576-78-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2576-80-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads