cycbot | 9d47e8a561e316e9c40ba27cac8c229c01ec1e5c7657f05a6eef176e5943d957

General

Target

JaffaCakes118_601235d805470d07c077163c6017b584.exe
Size

175KB
MD5

601235d805470d07c077163c6017b584
SHA1

4fb03564ee9dd28ecf3664a460ee0112c4da5915
SHA256

9d47e8a561e316e9c40ba27cac8c229c01ec1e5c7657f05a6eef176e5943d957
SHA512

88a947b3b1ef1680f55e7205ee884a992f05da10422b008e748114dcd1222c6cf172fc5b3550fe46de2a91ee6160a6d71bcfce52282802e836ac5fe907b2ea9d
SSDEEP

3072:i5c9xUdzO67/UxERxx+kNNZqf4XnmmFHTmQcAVg1y85aQ2oODU8h4vZKQi2+:ugUJUmxx+ym43zH6QcyXbBDU8hJ

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/2068-9-0x0000000000400000-0x000000000048C000-memory.dmp	family_cycbot
behavioral1/memory/2120-15-0x0000000000400000-0x000000000048C000-memory.dmp	family_cycbot
behavioral1/memory/2300-79-0x0000000000400000-0x000000000048C000-memory.dmp	family_cycbot
behavioral1/memory/2300-80-0x0000000000400000-0x000000000048C000-memory.dmp	family_cycbot
behavioral1/memory/2120-139-0x0000000000400000-0x000000000048C000-memory.dmp	family_cycbot
behavioral1/memory/2120-181-0x0000000000400000-0x000000000048C000-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-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_601235d805470d07c077163c6017b584.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 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2120-2-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral1/memory/2068-9-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral1/memory/2120-15-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral1/memory/2300-79-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral1/memory/2300-80-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral1/memory/2120-139-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral1/memory/2120-181-0x0000000000400000-0x000000000048C000-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_601235d805470d07c077163c6017b584.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_601235d805470d07c077163c6017b584.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_601235d805470d07c077163c6017b584.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2120 wrote to memory of 2068	2120	JaffaCakes118_601235d805470d07c077163c6017b584.exe	30
PID 2120 wrote to memory of 2068	2120	JaffaCakes118_601235d805470d07c077163c6017b584.exe	30
PID 2120 wrote to memory of 2068	2120	JaffaCakes118_601235d805470d07c077163c6017b584.exe	30
PID 2120 wrote to memory of 2068	2120	JaffaCakes118_601235d805470d07c077163c6017b584.exe	30
PID 2120 wrote to memory of 2300	2120	JaffaCakes118_601235d805470d07c077163c6017b584.exe	33
PID 2120 wrote to memory of 2300	2120	JaffaCakes118_601235d805470d07c077163c6017b584.exe	33
PID 2120 wrote to memory of 2300	2120	JaffaCakes118_601235d805470d07c077163c6017b584.exe	33
PID 2120 wrote to memory of 2300	2120	JaffaCakes118_601235d805470d07c077163c6017b584.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_601235d805470d07c077163c6017b584.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_601235d805470d07c077163c6017b584.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2120
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_601235d805470d07c077163c6017b584.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_601235d805470d07c077163c6017b584.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2068
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_601235d805470d07c077163c6017b584.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_601235d805470d07c077163c6017b584.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2300

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\44CB.164

Filesize
1KB

MD5
c0a6b2fa9be67034b73a32cfaf1594d5

SHA1
1db8e63ce1f382987032af8623104d3cddb4b6fa

SHA256
77805fb3f1ef173d544fbe60a3ef0cfea260364808334837c6391a276a0f3d60

SHA512
37484cca743ac6a94004f6c4729fc753e9b85c6029914d655396c248fc16390c5221f0bd5986bc3a66f82b2d6b6c52a41544e19bb026becce44748c43e05598f

Download Submit
C:\Users\Admin\AppData\Roaming\44CB.164

Filesize
600B

MD5
ef5b0ffad36369e3ad467628a179ca4d

SHA1
6425abfff8e12afefb929183eac292267eb0d922

SHA256
922fae48e3edf7e9cabd5ab72ab67497e15de974aed8eb35f466a04b24aa4265

SHA512
64d6fd8a2e0cff8b547bfb38a61b8b69102316a1e89efd442785ae2a6c085c76fbc812dc3d68d72e972212fb099099245c5828e8dfccd380201bd386187ac39b

Download Submit
C:\Users\Admin\AppData\Roaming\44CB.164

Filesize
996B

MD5
3a4be53afbe4a539de915f920c88cea9

SHA1
43687d58275323b8e3a8901026d052be023cbe08

SHA256
7c0a9f65210cf88bd48a10329e904fa8825670b52022b68e8a7c52b76d3407e1

SHA512
60b85b38d0721be970a9d0e8f08002ba53545223a2a381cd9111c50996864861ec22c3a92cf0581164a3596211c28c8e25c217b1b7464da7ca64fe49f97f8d88

Download Submit
memory/2068-10-0x000000000059A000-0x00000000005B5000-memory.dmp

Filesize
108KB

Download
memory/2068-9-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2120-1-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2120-2-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2120-15-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2120-139-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2120-181-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2300-79-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2300-80-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads