cycbot | b8beaa6691629e237109c4d4baca960540a6e39e1928ebed7fba88264220aafd

General

Target

e7c92550be6e64999ae9e16218a25866_JaffaCakes118.exe
Size

180KB
MD5

e7c92550be6e64999ae9e16218a25866
SHA1

eafaf59e4a8a460a28eb13920af8c0f3836d4a80
SHA256

b8beaa6691629e237109c4d4baca960540a6e39e1928ebed7fba88264220aafd
SHA512

2b0473c012f10c0aff8eb7329b01b08a024de1e7d3be95cd7084ea72beda21e44537640d7180baa704a84c8669f48e0b92621b6c2a3884ce8b223c0f92ec5f79
SSDEEP

3072:4egiUWo2EtNZeJLWkxhGfsKqV45EJK58KsTeaBpkUEsDgOSZU:3giUWCEtFhqsKC4eK56qaBTEssA

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/2932-8-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/2932-10-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/2716-15-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/2716-72-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/408-76-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/2716-183-0x0000000000400000-0x000000000048D000-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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	e7c92550be6e64999ae9e16218a25866_JaffaCakes118.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 8 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2716-2-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2932-8-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2932-10-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2716-15-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2716-72-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/408-74-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/408-76-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2716-183-0x0000000000400000-0x000000000048D000-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	e7c92550be6e64999ae9e16218a25866_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e7c92550be6e64999ae9e16218a25866_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e7c92550be6e64999ae9e16218a25866_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2716 wrote to memory of 2932	2716	e7c92550be6e64999ae9e16218a25866_JaffaCakes118.exe	30
PID 2716 wrote to memory of 2932	2716	e7c92550be6e64999ae9e16218a25866_JaffaCakes118.exe	30
PID 2716 wrote to memory of 2932	2716	e7c92550be6e64999ae9e16218a25866_JaffaCakes118.exe	30
PID 2716 wrote to memory of 2932	2716	e7c92550be6e64999ae9e16218a25866_JaffaCakes118.exe	30
PID 2716 wrote to memory of 408	2716	e7c92550be6e64999ae9e16218a25866_JaffaCakes118.exe	32
PID 2716 wrote to memory of 408	2716	e7c92550be6e64999ae9e16218a25866_JaffaCakes118.exe	32
PID 2716 wrote to memory of 408	2716	e7c92550be6e64999ae9e16218a25866_JaffaCakes118.exe	32
PID 2716 wrote to memory of 408	2716	e7c92550be6e64999ae9e16218a25866_JaffaCakes118.exe	32

C:\Users\Admin\AppData\Local\Temp\e7c92550be6e64999ae9e16218a25866_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e7c92550be6e64999ae9e16218a25866_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2716
- C:\Users\Admin\AppData\Local\Temp\e7c92550be6e64999ae9e16218a25866_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\e7c92550be6e64999ae9e16218a25866_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2932
- C:\Users\Admin\AppData\Local\Temp\e7c92550be6e64999ae9e16218a25866_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\e7c92550be6e64999ae9e16218a25866_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:408

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\2241.AF2

Filesize
1KB

MD5
f7e1bc25de0106cd8b733f414c2b7c00

SHA1
179c74dd39d408d8fefb66d24c5f516a265e028c

SHA256
dac2ce6f23f86d22eb6d152ac63a6157bc81035201abf64e290e9c98928c2197

SHA512
a4840eabed2c68762b5d166c7d75d4d5b50a5db1417fec8b8e943ef5967268747de78bf187787ea0bcab6f367d1297e8c7407fe5d58b1dfc7c57118699827cf7

Download Submit
C:\Users\Admin\AppData\Roaming\2241.AF2

Filesize
600B

MD5
6f3289803223d072044d4f0b837988d1

SHA1
73047dda2997eb6051af609f3452f303395f5bc8

SHA256
63d8cdfba33e031dac4999c6580aa93f1ca5ef21b8f9e7af5e581f74cf3bd2f9

SHA512
de9883d999d8f40a7b571537432c486d1b22d26da3705ca8eac9b8d23bb24314cd0a3278f07f329a83651b9b80dfdd0e41b6c293ae2246530a475af8c47b49c0

Download Submit
C:\Users\Admin\AppData\Roaming\2241.AF2

Filesize
996B

MD5
50073e25b43d8067ee14c3331c222ba6

SHA1
3b98ac9ebc786c73ecdfa1d395e8c76a30daede3

SHA256
a32ed2d5bf7c34f09d23c615eea0a69baea362612459fbc0317d9a282d210c2d

SHA512
7143b5565ce1ea233dca184022a230119a9d23dbd6d1f4d5c15e60ec459dbec066665e2514f5f9132074b0ee649278271607243745e8deeeee7be8bc092fa45b

Download Submit
memory/408-74-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/408-76-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2716-1-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2716-2-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2716-15-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2716-72-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2716-183-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2932-8-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2932-10-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads