cycbot | 4fbd044ae624ad60c6deb22f9d75c8b7f8511205702fd8699e9aa8ec4da480cf

General

Target

JaffaCakes118_d4105ce3c50f94325221fa3ddba1ebd4.exe
Size

178KB
MD5

d4105ce3c50f94325221fa3ddba1ebd4
SHA1

f9fc5322722215edcd9ed7a99e54c95fad9ce5a6
SHA256

4fbd044ae624ad60c6deb22f9d75c8b7f8511205702fd8699e9aa8ec4da480cf
SHA512

f79ef5b25d6774a6525c7925aee50ddfc8ca5e5f1f20bc50e09ea9856b16730dc407c35f7e6ebee019c9d760361827f7181a432b2a3447a5a8141273c9ffe270
SSDEEP

3072:B8PCh614n5S3CT+JdqnW9h8a97qL129m4UfnS4wSIrBtDTCLBj0RErY72uRBWp:Sq0inH6OQlu2E44SV6L6WrmhR

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/2180-7-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/2776-15-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/1728-79-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/2776-80-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/2776-200-0x0000000000400000-0x000000000046E000-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_d4105ce3c50f94325221fa3ddba1ebd4.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 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2776-2-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2180-7-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2180-6-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2776-15-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/1728-79-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2776-80-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2776-200-0x0000000000400000-0x000000000046E000-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_d4105ce3c50f94325221fa3ddba1ebd4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_d4105ce3c50f94325221fa3ddba1ebd4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_d4105ce3c50f94325221fa3ddba1ebd4.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2776 wrote to memory of 2180	2776	JaffaCakes118_d4105ce3c50f94325221fa3ddba1ebd4.exe	30
PID 2776 wrote to memory of 2180	2776	JaffaCakes118_d4105ce3c50f94325221fa3ddba1ebd4.exe	30
PID 2776 wrote to memory of 2180	2776	JaffaCakes118_d4105ce3c50f94325221fa3ddba1ebd4.exe	30
PID 2776 wrote to memory of 2180	2776	JaffaCakes118_d4105ce3c50f94325221fa3ddba1ebd4.exe	30
PID 2776 wrote to memory of 1728	2776	JaffaCakes118_d4105ce3c50f94325221fa3ddba1ebd4.exe	32
PID 2776 wrote to memory of 1728	2776	JaffaCakes118_d4105ce3c50f94325221fa3ddba1ebd4.exe	32
PID 2776 wrote to memory of 1728	2776	JaffaCakes118_d4105ce3c50f94325221fa3ddba1ebd4.exe	32
PID 2776 wrote to memory of 1728	2776	JaffaCakes118_d4105ce3c50f94325221fa3ddba1ebd4.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_d4105ce3c50f94325221fa3ddba1ebd4.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_d4105ce3c50f94325221fa3ddba1ebd4.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2776
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_d4105ce3c50f94325221fa3ddba1ebd4.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_d4105ce3c50f94325221fa3ddba1ebd4.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2180
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_d4105ce3c50f94325221fa3ddba1ebd4.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_d4105ce3c50f94325221fa3ddba1ebd4.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1728

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\6953.78C

Filesize
1KB

MD5
a943157986ef6af73029cdaf36a9ebc1

SHA1
ae8915553c84008452daa64e0fbbb3e6f2a49e10

SHA256
043644e8510a8a71682fbe1d7cb6471076ca62e7c0790ffa42c86986fba8fd51

SHA512
45b0a5cb9ae832489843ff15313e64859337e586dcec3319bdf219f0975eb0ddfd5d9bfb12ee08404e8868b2db89465414150c7619ae237aef567753d503eefd

Download Submit
C:\Users\Admin\AppData\Roaming\6953.78C

Filesize
600B

MD5
5ae9c2d53a04ed7061d047e7f39ad759

SHA1
590a0b47eb411b0ac83dd098a6693be23f848179

SHA256
d749451c07e499d3cae63404f68404586e2506ecf63533d397c2973f6e495ff5

SHA512
979a75cbd236aba46154c084935f27f0cb85dfecc66739328e588681ba1bf8e9d1636400164d2e246cab6b84866215c96a7698356c8d731c8f67ecf3915a134b

Download Submit
C:\Users\Admin\AppData\Roaming\6953.78C

Filesize
996B

MD5
ce0537fe4d9ded19321f2bd15acbf477

SHA1
e89ea18be0f718e8fa5f19140e86951be9cc5452

SHA256
ccefd0c97c4d83ee7350b5ee8feba65108dd24cdde0627536715576e1533f3c0

SHA512
c6859f5bced815248a8906cbcdfe7b7b77b6701498fcd49761f1f5ae0019f6b324984873badfb33452049c68d5e23d3b421f203cbc13fca877950aaa48407be3

Download Submit
memory/1728-79-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1728-78-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1728-154-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2180-6-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2180-7-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2776-15-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2776-1-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2776-80-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2776-2-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2776-200-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads