cycbot | 9e9cc54cc7db0037d641d1496ea2021b248ad829b7c19484886eba8c3d15d6f2

General

Target

JaffaCakes118_7735855acf95a20be81302c8867ed6ca.exe
Size

179KB
MD5

7735855acf95a20be81302c8867ed6ca
SHA1

e1aed269a95936936914238fe2f923c0e0894d02
SHA256

9e9cc54cc7db0037d641d1496ea2021b248ad829b7c19484886eba8c3d15d6f2
SHA512

0660a122ebab89bfd1d975a74e34b7456e0397c8306dfefe74069bd1c3ca1c8c613a842adf131464c14f216d46eb0df3bb71c5b491e65e94d1dff74d9e69c8ea
SSDEEP

3072:6uTbE585+kWQKhRPZeBx+IG1jaFjPy7D6lC2YGvrFB5nXIADu:6Sc8wRzhaxK7D6LrFBNh

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 6 IoCs

Cycbot is a backdoor and trojan written in C++.

resource	yara_rule
behavioral1/memory/2832-8-0x0000000000400000-0x0000000000485000-memory.dmp	family_cycbot
behavioral1/memory/2716-15-0x0000000000400000-0x0000000000485000-memory.dmp	family_cycbot
behavioral1/memory/2588-77-0x0000000000400000-0x0000000000485000-memory.dmp	family_cycbot
behavioral1/memory/2716-78-0x0000000000400000-0x0000000000485000-memory.dmp	family_cycbot
behavioral1/memory/2716-169-0x0000000000400000-0x0000000000485000-memory.dmp	family_cycbot
behavioral1/memory/2716-206-0x0000000000400000-0x0000000000485000-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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_7735855acf95a20be81302c8867ed6ca.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/2716-2-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral1/memory/2832-6-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral1/memory/2832-5-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral1/memory/2832-8-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral1/memory/2716-15-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral1/memory/2588-77-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral1/memory/2716-78-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral1/memory/2716-169-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral1/memory/2716-206-0x0000000000400000-0x0000000000485000-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_7735855acf95a20be81302c8867ed6ca.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_7735855acf95a20be81302c8867ed6ca.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_7735855acf95a20be81302c8867ed6ca.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2716 wrote to memory of 2832	2716	JaffaCakes118_7735855acf95a20be81302c8867ed6ca.exe	30
PID 2716 wrote to memory of 2832	2716	JaffaCakes118_7735855acf95a20be81302c8867ed6ca.exe	30
PID 2716 wrote to memory of 2832	2716	JaffaCakes118_7735855acf95a20be81302c8867ed6ca.exe	30
PID 2716 wrote to memory of 2832	2716	JaffaCakes118_7735855acf95a20be81302c8867ed6ca.exe	30
PID 2716 wrote to memory of 2588	2716	JaffaCakes118_7735855acf95a20be81302c8867ed6ca.exe	32
PID 2716 wrote to memory of 2588	2716	JaffaCakes118_7735855acf95a20be81302c8867ed6ca.exe	32
PID 2716 wrote to memory of 2588	2716	JaffaCakes118_7735855acf95a20be81302c8867ed6ca.exe	32
PID 2716 wrote to memory of 2588	2716	JaffaCakes118_7735855acf95a20be81302c8867ed6ca.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7735855acf95a20be81302c8867ed6ca.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7735855acf95a20be81302c8867ed6ca.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2716
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7735855acf95a20be81302c8867ed6ca.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7735855acf95a20be81302c8867ed6ca.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2832
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7735855acf95a20be81302c8867ed6ca.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7735855acf95a20be81302c8867ed6ca.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2588

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\28B0.612

Filesize
1KB

MD5
4378fba1b966f88ab87d32373ed39cd9

SHA1
05c20f61104a667f6c9ff528b2a5d74c7a306d97

SHA256
8ffc3a1a5955def26b9105cf851450bfe5b82a984ff80140bf6225fade0521b7

SHA512
65a7e5f639028a3fab764cbbfe9389253d7183651626658aabc01e3cc06a8ba051420e951fed97429f116032099e649d2da8243baae69d59addee0da8479f0b8

Download Submit
C:\Users\Admin\AppData\Roaming\28B0.612

Filesize
600B

MD5
2527a17ef0a5461d7397ad2948d5a45c

SHA1
7a6f3943f63b262e082c69e1adef3699a2b737e0

SHA256
f75f8899484f9162e00fde5d167f75d0ec54a17b8d06c1ec82405e7c9ab4e9b8

SHA512
de830e9a9a1a7f1a07d9bd2f796b0ee744eb428f7adb4e30946e5cfbda01a1511fbb5bbebc973f8608bed7a3daca40fbcda5190a0d6ac6c7c52242ad08f81e30

Download Submit
C:\Users\Admin\AppData\Roaming\28B0.612

Filesize
996B

MD5
03dce4d9556d497f5ce37806f759678c

SHA1
5635714b9fea1d3e7b2cb298ac061eb3c67543c0

SHA256
c2ce713940b6e324fc9391e09a8835a563fca554942926b182c07e3c1b25dc87

SHA512
c8051c9c7457e4dcc5c668c62e82b835ab9a168c59b658c1dc545fce6c58dc1b3068d2385b10170fcf2e20511fa9debff2414a710c1dd7f9566dd14ccd1169fa

Download Submit
memory/2588-77-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/2716-15-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/2716-78-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/2716-1-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/2716-2-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/2716-169-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/2716-206-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/2832-5-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/2832-8-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/2832-6-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads