cycbot | 97e8f18076c4df6f5511015d7e6446b432d6fd3fa450d610a8ded518ebcd8a1a

General

Target

JaffaCakes118_3ace59e1019ae966e3d7e0b73ac2c8c3.exe
Size

165KB
MD5

3ace59e1019ae966e3d7e0b73ac2c8c3
SHA1

c7b87c0b515cd674aee691adbb00649cabe160d0
SHA256

97e8f18076c4df6f5511015d7e6446b432d6fd3fa450d610a8ded518ebcd8a1a
SHA512

4e06698fc314d1f9f14d3a01cf54a0839f9591024e721ede7f5be8dbe86c9c6f9b20b7cbcc7229a3e8e7a1989004a119d2484f1798d16ddac591dfc92640ebfd
SSDEEP

3072:UUggWvei+S23U56YAdTrs9iZAR/NUgiwtavxoqrVf1yZuS5uZVLq:UUPUedSueAdTKCAR/N/Oxn9kZuS5uz

Score

10^/10

cycbot backdoor discovery persistence rat 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
behavioral2/memory/4996-15-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/1800-16-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral2/memory/1800-17-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/5092-127-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/1800-128-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/1800-282-0x0000000000400000-0x0000000000490000-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-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\B91A3\\932DF.exe"	JaffaCakes118_3ace59e1019ae966e3d7e0b73ac2c8c3.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1800-3-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/4996-14-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/4996-15-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/1800-16-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral2/memory/1800-17-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/5092-127-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/1800-128-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/1800-282-0x0000000000400000-0x0000000000490000-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_3ace59e1019ae966e3d7e0b73ac2c8c3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_3ace59e1019ae966e3d7e0b73ac2c8c3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_3ace59e1019ae966e3d7e0b73ac2c8c3.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1800 wrote to memory of 4996	1800	JaffaCakes118_3ace59e1019ae966e3d7e0b73ac2c8c3.exe	85
PID 1800 wrote to memory of 4996	1800	JaffaCakes118_3ace59e1019ae966e3d7e0b73ac2c8c3.exe	85
PID 1800 wrote to memory of 4996	1800	JaffaCakes118_3ace59e1019ae966e3d7e0b73ac2c8c3.exe	85
PID 1800 wrote to memory of 5092	1800	JaffaCakes118_3ace59e1019ae966e3d7e0b73ac2c8c3.exe	87
PID 1800 wrote to memory of 5092	1800	JaffaCakes118_3ace59e1019ae966e3d7e0b73ac2c8c3.exe	87
PID 1800 wrote to memory of 5092	1800	JaffaCakes118_3ace59e1019ae966e3d7e0b73ac2c8c3.exe	87

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3ace59e1019ae966e3d7e0b73ac2c8c3.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3ace59e1019ae966e3d7e0b73ac2c8c3.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1800
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3ace59e1019ae966e3d7e0b73ac2c8c3.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3ace59e1019ae966e3d7e0b73ac2c8c3.exe startC:\Program Files (x86)\LP\DF6B\5CE.exe%C:\Program Files (x86)\LP\DF6B
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4996
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3ace59e1019ae966e3d7e0b73ac2c8c3.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3ace59e1019ae966e3d7e0b73ac2c8c3.exe startC:\Program Files (x86)\A3539\lvvm.exe%C:\Program Files (x86)\A3539
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5092

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

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\B91A3\3539.91A

Filesize
596B

MD5
5532f46562351acac93c71f5a1e007bd

SHA1
ef4fab0a890fd1a105baa0365ed2dae8ac02700a

SHA256
a84d790e4694f2f83969d79d68caf80b0c43b3b495a53ead1156063c0719429b

SHA512
637e1f62f705ad2b8045ac8a505afad165797f35b646729f1c2adfdcca44eadb81deedaf15ad22a830724305db94da7753a1486d81861a427fe35c85b75e64da

Download Submit
C:\Users\Admin\AppData\Roaming\B91A3\3539.91A

Filesize
996B

MD5
7b074bceb5a04c4cd6eb3bcf5a6ead15

SHA1
4102542d7610095a9450f46ad8dcfb048f1c94be

SHA256
ee8cd94ed52a229543181c5118a2e742355bb240f95546172fab22a2c7c36c03

SHA512
d808c012986683e8fdd6108db7e157165215c37a8c6c840f64b7e90a90b36d5421ecea3a28204501a903f847ced6400e7c3ad760af9a84fbfbccf9a8f23723aa

Download Submit
C:\Users\Admin\AppData\Roaming\B91A3\3539.91A

Filesize
600B

MD5
401b24ebf2fa6c669ca7701550c21e15

SHA1
6b617a938d103453a7a210ec3d1827225f42f512

SHA256
95fb285b02bc23a066ec65eb50ccb84dcf624227a449eb67ad74531b9efc9c9c

SHA512
97c42645360096863964eff30a9a8284b90686fef1dc4137f541293968b792f9d637f47ded76feccc60e37d1cb6bf2f2a0cad995ae667f0f175b641535783771

Download Submit
C:\Users\Admin\AppData\Roaming\B91A3\3539.91A

Filesize
1KB

MD5
aa3eecb1bbdd467d61e0de43a2b3810c

SHA1
2f1823d18cfd61b5e9123e9196fdf6bfa6140785

SHA256
3fbd12113691cb02b5f7cd12330e5afaf8f86defb133f7662835ee6b151ab6bb

SHA512
31875c86c24ea003b1d9e613e3ece19128f432be39f797586464db40728a4520f2f0fed3cb8c4a41f0fd0bb62c9c0afe29f0976afe1868c0ffd2f0334157da26

Download Submit
memory/1800-16-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/1800-0-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/1800-17-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/1800-128-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/1800-3-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/1800-2-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/1800-282-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/4996-15-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/4996-14-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/5092-127-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads