cycbot | dd5a4fdea9fa94e6535803867990352151b51f3d9716be66be8282382e4bb3c9

General

Target

JaffaCakes118_6e7cc9d832b8e4dda93784898e96191d.exe
Size

172KB
MD5

6e7cc9d832b8e4dda93784898e96191d
SHA1

a8b3bd573fb29e13bfeb6988a322a520591874d0
SHA256

dd5a4fdea9fa94e6535803867990352151b51f3d9716be66be8282382e4bb3c9
SHA512

4ef75f30770e3c4078b61ffbce0f4032654352155cc9f96a20f5d587a004a17899628bc9ee30a649b0dd1753025b7a72ff378aa1515cc9d5c92a7080f731b0ac
SSDEEP

3072:VOVje/W2l0W1JZMwspmwwvjRaoq+0z0iIdCMCuqm0cAWoXAaGTVZQDghQqsZitRx:VOVjeO21Jitmxq50/djFpoQaGLtsZitb

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/2712-14-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/2700-15-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/2700-80-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/2176-84-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/2700-187-0x0000000000400000-0x000000000048D000-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-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\92384\\7ED3A.exe"	JaffaCakes118_6e7cc9d832b8e4dda93784898e96191d.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/2700-2-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2712-12-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2712-14-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2700-15-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2700-80-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2176-83-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2176-84-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2700-187-0x0000000000400000-0x000000000048D000-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	JaffaCakes118_6e7cc9d832b8e4dda93784898e96191d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_6e7cc9d832b8e4dda93784898e96191d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_6e7cc9d832b8e4dda93784898e96191d.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2700 wrote to memory of 2712	2700	JaffaCakes118_6e7cc9d832b8e4dda93784898e96191d.exe	30
PID 2700 wrote to memory of 2712	2700	JaffaCakes118_6e7cc9d832b8e4dda93784898e96191d.exe	30
PID 2700 wrote to memory of 2712	2700	JaffaCakes118_6e7cc9d832b8e4dda93784898e96191d.exe	30
PID 2700 wrote to memory of 2712	2700	JaffaCakes118_6e7cc9d832b8e4dda93784898e96191d.exe	30
PID 2700 wrote to memory of 2176	2700	JaffaCakes118_6e7cc9d832b8e4dda93784898e96191d.exe	32
PID 2700 wrote to memory of 2176	2700	JaffaCakes118_6e7cc9d832b8e4dda93784898e96191d.exe	32
PID 2700 wrote to memory of 2176	2700	JaffaCakes118_6e7cc9d832b8e4dda93784898e96191d.exe	32
PID 2700 wrote to memory of 2176	2700	JaffaCakes118_6e7cc9d832b8e4dda93784898e96191d.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6e7cc9d832b8e4dda93784898e96191d.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6e7cc9d832b8e4dda93784898e96191d.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2700
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6e7cc9d832b8e4dda93784898e96191d.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6e7cc9d832b8e4dda93784898e96191d.exe startC:\Program Files (x86)\Internet Explorer\3A09\54D.exe%C:\Program Files (x86)\Internet Explorer\3A09
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2712
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6e7cc9d832b8e4dda93784898e96191d.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6e7cc9d832b8e4dda93784898e96191d.exe startC:\Program Files (x86)\84B13\lvvm.exe%C:\Program Files (x86)\84B13
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2176

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\92384\4B13.238

Filesize
1KB

MD5
d21d7514e001d4d61c7c4680cedc7d11

SHA1
97a7cdfc37796560e9ace186a28e023287e1e79c

SHA256
5b8fc4dd58ee15f2d5291215f8cbc230ca12c431cfb6d4b4ffafccda30fe6d9b

SHA512
a2da625fd08226f12c75d8dbc235212357b233be41690c201d1ba2f3e9c54d0bb87213ebe56f546c58bc2256c23827a3b116e3e2cbe8264b677d62a1f375f01b

Download Submit
C:\Users\Admin\AppData\Roaming\92384\4B13.238

Filesize
600B

MD5
8bf2a150e1cae666c721130caad40415

SHA1
6ae08d90c5d4091a1d793add0c8121429804a6b5

SHA256
9da2c895c291a25738a584df228629fe48210709ba9d2dd6b9aff8e891d66ad3

SHA512
30e860f446c08f091d072306da8d5574cc0d9bc1f4ea2b749b83f1c4e9e5472a2214b85dcfb0981a20e8a2a8fff5903c37abaf9f60876b7d943e161e5519662c

Download Submit
C:\Users\Admin\AppData\Roaming\92384\4B13.238

Filesize
996B

MD5
03075797d017aa77c48af5eebbe44a45

SHA1
da8ff294b7781b394bfbba3480054d31945a1a7c

SHA256
412354a7dbb99d9537d83821e921965d42291ab15714911b2635483c1324998b

SHA512
e6814bf97697f6343cf6408dea76674c5f67e5b4e995df5d88a62d9ff0b95d8a34182834aa3fb2262554327fbe3f7122bfe55556903b3d9cd130784c37f1a5c8

Download Submit
memory/2176-83-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2176-84-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2700-2-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2700-187-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2700-1-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2700-15-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2700-80-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2712-14-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2712-81-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2712-12-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads