cycbot | f9c31819a9bc8904df5753e8eff02e66d95110ecc1aa97f3b437809ad7ec5c64

General

Target

JaffaCakes118_729d080c3ddc3a37e235f3ca0dc08a72.exe
Size

204KB
MD5

729d080c3ddc3a37e235f3ca0dc08a72
SHA1

63c572b8e395ced7134e6921c407fa9555251f5e
SHA256

f9c31819a9bc8904df5753e8eff02e66d95110ecc1aa97f3b437809ad7ec5c64
SHA512

c63bb1f1d03498022420a5fa8967a75393d7a7abe1944d86942574be7e0e107723915f458b9ea175de7079187f0f6bab6efeca809609b045c4d8144ca016271a
SSDEEP

6144:kvDj+Vgh3mhV8yMQ7/z9r8S3RXvO8NdhQ8Wk7fjT3zdq:k7j+vhV8yMYr/3De8JjT3pq

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/2844-8-0x0000000000400000-0x000000000046D000-memory.dmp	family_cycbot
behavioral1/memory/2808-16-0x0000000000400000-0x000000000046D000-memory.dmp	family_cycbot
behavioral1/memory/664-78-0x0000000000400000-0x000000000046D000-memory.dmp	family_cycbot
behavioral1/memory/2808-79-0x0000000000400000-0x000000000046D000-memory.dmp	family_cycbot
behavioral1/memory/2808-194-0x0000000000400000-0x000000000046D000-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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_729d080c3ddc3a37e235f3ca0dc08a72.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/2808-2-0x0000000000400000-0x000000000046D000-memory.dmp	upx
behavioral1/memory/2844-5-0x0000000000400000-0x000000000046D000-memory.dmp	upx
behavioral1/memory/2844-6-0x0000000000400000-0x000000000046D000-memory.dmp	upx
behavioral1/memory/2844-8-0x0000000000400000-0x000000000046D000-memory.dmp	upx
behavioral1/memory/2808-16-0x0000000000400000-0x000000000046D000-memory.dmp	upx
behavioral1/memory/664-77-0x0000000000400000-0x000000000046D000-memory.dmp	upx
behavioral1/memory/664-78-0x0000000000400000-0x000000000046D000-memory.dmp	upx
behavioral1/memory/2808-79-0x0000000000400000-0x000000000046D000-memory.dmp	upx
behavioral1/memory/2808-194-0x0000000000400000-0x000000000046D000-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_729d080c3ddc3a37e235f3ca0dc08a72.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_729d080c3ddc3a37e235f3ca0dc08a72.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_729d080c3ddc3a37e235f3ca0dc08a72.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2808 wrote to memory of 2844	2808	JaffaCakes118_729d080c3ddc3a37e235f3ca0dc08a72.exe	31
PID 2808 wrote to memory of 2844	2808	JaffaCakes118_729d080c3ddc3a37e235f3ca0dc08a72.exe	31
PID 2808 wrote to memory of 2844	2808	JaffaCakes118_729d080c3ddc3a37e235f3ca0dc08a72.exe	31
PID 2808 wrote to memory of 2844	2808	JaffaCakes118_729d080c3ddc3a37e235f3ca0dc08a72.exe	31
PID 2808 wrote to memory of 664	2808	JaffaCakes118_729d080c3ddc3a37e235f3ca0dc08a72.exe	33
PID 2808 wrote to memory of 664	2808	JaffaCakes118_729d080c3ddc3a37e235f3ca0dc08a72.exe	33
PID 2808 wrote to memory of 664	2808	JaffaCakes118_729d080c3ddc3a37e235f3ca0dc08a72.exe	33
PID 2808 wrote to memory of 664	2808	JaffaCakes118_729d080c3ddc3a37e235f3ca0dc08a72.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_729d080c3ddc3a37e235f3ca0dc08a72.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_729d080c3ddc3a37e235f3ca0dc08a72.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2808
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_729d080c3ddc3a37e235f3ca0dc08a72.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_729d080c3ddc3a37e235f3ca0dc08a72.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2844
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_729d080c3ddc3a37e235f3ca0dc08a72.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_729d080c3ddc3a37e235f3ca0dc08a72.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:664

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\4CDB.B4A

Filesize
1KB

MD5
da22ab00e1c97c7bd154de2a56dd3e79

SHA1
2f2ca8d8b39bc7cd934318a265f0f3d65eb224ee

SHA256
575de029e9af8480a56b5d808476b07e5c07a084d3e8bfa473d62e83c1602f1b

SHA512
81f820b511b2aa127d1862b15027b2cd1f5f7bf68866c8c122ee1878fd3b632acca16c1fbf69ba62a424130417f7b3ffb36ecd216fbbd0613d903678c886d704

Download Submit
C:\Users\Admin\AppData\Roaming\4CDB.B4A

Filesize
1KB

MD5
bbf5ff23abe4ecf16cd33ca70a7934a5

SHA1
54b9ad47d362ec9342b15df1f3731026ce592975

SHA256
3fa1ea01c8813f4c877592525ef5f45f8578d038b9d9fa4529dd0581170963ca

SHA512
187df83040ff851064de7c43d1ec54d73df5689b6922eb1b06fbc99c46c0c76a63b02362ec5c24190cf81af7a6f44ac4df32d9c2a59f36ef385ab8583ab54852

Download Submit
C:\Users\Admin\AppData\Roaming\4CDB.B4A

Filesize
600B

MD5
f7ff606cbfdcf2af99abfd3db648363e

SHA1
45d04adfa6a6ff5e8b1e13ae0ac86dd804b1c7d7

SHA256
4ac4e8f3de39f3a6474cea88d34b77c6fabeb24a4f36ce4fac700c7297c522b8

SHA512
3cc56ed21cb7eb799a845303f6a33c345f9b38befcd49e53cd00ceab773fee329ed3ae2f36dae2f27c53505d60ebc3f7835a7c4466e7e2823c9a22bc9ad96618

Download Submit
C:\Users\Admin\AppData\Roaming\4CDB.B4A

Filesize
996B

MD5
e12e79be70c14081f3a5c2b66e8cf92e

SHA1
b388cee0a9eb834ebc434457770c9b7ec0242940

SHA256
2564729efd182af1c46948b6562d3ca0aca7aacb30323312d7775d7349a195d5

SHA512
25efd283fb647130d01d020b44ecb6d5aafd29158eb8b86d57a801bf682667a227d9b66df8cd467af885e74ad968be5c37ef7d89e278dcb5924772db4e3bb57a

Download Submit
memory/664-78-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/664-77-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2808-79-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2808-16-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2808-1-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2808-2-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2808-194-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2844-8-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2844-6-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2844-5-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads