cycbot | 24dda5a1b590c108ca7ee3eeac132705a845abacac716c5c7673a941efd881e5

General

Target

JaffaCakes118_c659bd947a937c9b68717034c48d2c2d.exe
Size

168KB
MD5

c659bd947a937c9b68717034c48d2c2d
SHA1

fe84f049a961c9f7cd9d65e09a2bc40b97ab0b16
SHA256

24dda5a1b590c108ca7ee3eeac132705a845abacac716c5c7673a941efd881e5
SHA512

9ba06f70a51561482631c76f33aa3eb5eec7fce47a27d4f247df123f59a5a7f7a9bebe49178fac47a3bfcaff98b5feadf980d7b15702905187300bf305635f07
SSDEEP

3072:UhSzIiBfIqd7oIQo1y3V083XhVlG0vFduuVFIl+kDw6KtTUqIrDAO5hWEW/8yB2a:3Kqek1yF0qX9Fd6lzDwlTUFfp5xX4

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/2176-9-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/1992-20-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2392-85-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2392-87-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/1992-150-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/1992-187-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/1992-192-0x0000000000400000-0x000000000048A000-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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_c659bd947a937c9b68717034c48d2c2d.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/1992-2-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2176-7-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2176-9-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/1992-20-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2392-85-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2392-87-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/1992-150-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/1992-187-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/1992-192-0x0000000000400000-0x000000000048A000-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_c659bd947a937c9b68717034c48d2c2d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_c659bd947a937c9b68717034c48d2c2d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_c659bd947a937c9b68717034c48d2c2d.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1992 wrote to memory of 2176	1992	JaffaCakes118_c659bd947a937c9b68717034c48d2c2d.exe	30
PID 1992 wrote to memory of 2176	1992	JaffaCakes118_c659bd947a937c9b68717034c48d2c2d.exe	30
PID 1992 wrote to memory of 2176	1992	JaffaCakes118_c659bd947a937c9b68717034c48d2c2d.exe	30
PID 1992 wrote to memory of 2176	1992	JaffaCakes118_c659bd947a937c9b68717034c48d2c2d.exe	30
PID 1992 wrote to memory of 2392	1992	JaffaCakes118_c659bd947a937c9b68717034c48d2c2d.exe	33
PID 1992 wrote to memory of 2392	1992	JaffaCakes118_c659bd947a937c9b68717034c48d2c2d.exe	33
PID 1992 wrote to memory of 2392	1992	JaffaCakes118_c659bd947a937c9b68717034c48d2c2d.exe	33
PID 1992 wrote to memory of 2392	1992	JaffaCakes118_c659bd947a937c9b68717034c48d2c2d.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c659bd947a937c9b68717034c48d2c2d.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c659bd947a937c9b68717034c48d2c2d.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1992
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c659bd947a937c9b68717034c48d2c2d.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c659bd947a937c9b68717034c48d2c2d.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2176
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c659bd947a937c9b68717034c48d2c2d.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c659bd947a937c9b68717034c48d2c2d.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2392

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\4159.085

Filesize
597B

MD5
f17790f24d7014fecfb1f29998509473

SHA1
aad8fbd35fbbb1dd6f0af699e924673cd92e0520

SHA256
015c9b7a498cfb8a4b712b2b1696a5708bfd4adede68d51ec6c81b0e533ab0bf

SHA512
6af628d92c9149120033a400702aae7ded41d73f3083959af914646c39cba93450df3d304429800bcf1e32e005794b7fd5b4bf068519f6d259c17d8a069ca056

Download Submit
C:\Users\Admin\AppData\Roaming\4159.085

Filesize
1KB

MD5
7253e07b00fa070663587d5c5ce55b97

SHA1
b5df6bcacb9adc7456b855ee4faef29b82154fab

SHA256
d89add8f783741fd9c2c22c252f3ae44ef754827e8ccd8ff44f5c7c2d3bdb7cd

SHA512
466fad440619bb7b3fe0bce04814a8ac1602b3dd3a3571034b2f70805d98b1a35d23d2be0517d4063df80d05e61fa5da0313fc304575ebe0bbd5531a51af10ac

Download Submit
C:\Users\Admin\AppData\Roaming\4159.085

Filesize
897B

MD5
b00a8d7097b9a7383049e33d7b4cc56a

SHA1
f437c9ab5f96d43b81e1cbbe9090c05aafa5c7f3

SHA256
0019752d69740fdb8ea5d76657b6c626a223e2aad8abe596c01f06f9301ffd77

SHA512
7151bc264e77cb2f0241e70ae3cede0b29b27cb508c6093bf7d012cc964309e9e9d980f99efafcbf87a2380b4053d43e85a6eb7b74f9054f4f12fcd697652189

Download Submit
C:\Users\Admin\AppData\Roaming\4159.085

Filesize
1KB

MD5
9a3b5715c6cc263fc0841a9e3ea06076

SHA1
c913fa85cc7af00a084a73bf6186312c4ca3c2a2

SHA256
7374a01b9b4d8d0e3555282057c5c214da6dd29469c57beebe673a012a021b01

SHA512
cb0357d709f59b545716f4047710d612fd26294dfdfce54953be1cdb47fb002688534f831414793eb6c9ee300f8c8bb5e14bacae593d6620111d9c7942d402a0

Download Submit
memory/1992-2-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/1992-192-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/1992-1-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/1992-20-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/1992-187-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/1992-150-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2176-9-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2176-7-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2392-87-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2392-85-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads