cycbot | 0b575f9b95f12fd7e995eb8a9a6e3d742a3762b75cd20ca05830851ca979e342

General

Target

JaffaCakes118_1479b3354d7f9e6fe513f88924ae0e5c.exe
Size

180KB
MD5

1479b3354d7f9e6fe513f88924ae0e5c
SHA1

ca3e2ce38eb5b9b5651b6fec8d38b523dfceb3c6
SHA256

0b575f9b95f12fd7e995eb8a9a6e3d742a3762b75cd20ca05830851ca979e342
SHA512

b46435aa607af53ffea9e72626c93fa573385ec1e76a11e98b1a6b8754a0e6f7277d61403c7649c46557d036701271f79761765b8827830caa20ff775e20f8fb
SSDEEP

3072:R4DlgwOy4hsf3hyjNbhGKJ6TOAqOjhM18uI2WupaXgAFFVfvu+bAZFAzpYlgFDal:ylgry4avCP6u1vI2TmvVfvSZFAtYiDo

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/3028-8-0x0000000000400000-0x0000000000466000-memory.dmp	family_cycbot
behavioral1/memory/3028-6-0x0000000000400000-0x0000000000466000-memory.dmp	family_cycbot
behavioral1/memory/2484-15-0x0000000000400000-0x0000000000466000-memory.dmp	family_cycbot
behavioral1/memory/2072-72-0x0000000000400000-0x0000000000466000-memory.dmp	family_cycbot
behavioral1/memory/2484-73-0x0000000000400000-0x0000000000466000-memory.dmp	family_cycbot
behavioral1/memory/2484-174-0x0000000000400000-0x0000000000466000-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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_1479b3354d7f9e6fe513f88924ae0e5c.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/2484-2-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/3028-8-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/3028-6-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2484-15-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2072-71-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2072-72-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2484-73-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2484-174-0x0000000000400000-0x0000000000466000-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_1479b3354d7f9e6fe513f88924ae0e5c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_1479b3354d7f9e6fe513f88924ae0e5c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_1479b3354d7f9e6fe513f88924ae0e5c.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2484 wrote to memory of 3028	2484	JaffaCakes118_1479b3354d7f9e6fe513f88924ae0e5c.exe	30
PID 2484 wrote to memory of 3028	2484	JaffaCakes118_1479b3354d7f9e6fe513f88924ae0e5c.exe	30
PID 2484 wrote to memory of 3028	2484	JaffaCakes118_1479b3354d7f9e6fe513f88924ae0e5c.exe	30
PID 2484 wrote to memory of 3028	2484	JaffaCakes118_1479b3354d7f9e6fe513f88924ae0e5c.exe	30
PID 2484 wrote to memory of 2072	2484	JaffaCakes118_1479b3354d7f9e6fe513f88924ae0e5c.exe	32
PID 2484 wrote to memory of 2072	2484	JaffaCakes118_1479b3354d7f9e6fe513f88924ae0e5c.exe	32
PID 2484 wrote to memory of 2072	2484	JaffaCakes118_1479b3354d7f9e6fe513f88924ae0e5c.exe	32
PID 2484 wrote to memory of 2072	2484	JaffaCakes118_1479b3354d7f9e6fe513f88924ae0e5c.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1479b3354d7f9e6fe513f88924ae0e5c.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1479b3354d7f9e6fe513f88924ae0e5c.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2484
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1479b3354d7f9e6fe513f88924ae0e5c.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1479b3354d7f9e6fe513f88924ae0e5c.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3028
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1479b3354d7f9e6fe513f88924ae0e5c.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1479b3354d7f9e6fe513f88924ae0e5c.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2072

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\A26E.56C

Filesize
1KB

MD5
e67cfe26ac986c149c9945839481c6c0

SHA1
c6d8bf9460460763f5a1ef272de94f783e0cf7db

SHA256
b3bef1e9a7852e891411cd24c27490f29f81415a68e60d8e82e4dc2e7cc4dc82

SHA512
24c2f20366d4e0edddaa9d28d721862189326d97f46acdbc11637213a242c2a1aef6983a8f81b91fc46115d511510e063b06b609d4e7e7326744f056b804b8fc

Download Submit
C:\Users\Admin\AppData\Roaming\A26E.56C

Filesize
600B

MD5
17065c3dd5e6924b0f4dc6c4b668fcec

SHA1
62e6dcf115cc8d3ea2b9c164b2dda81cc6bc5b20

SHA256
017e4209279b105f6073cf5d04d8ef90b41ee0f34e6afae460b1283fcb31c31d

SHA512
4635123898b02c26042f173400a8aa01104962ef75bc65ebbf1d8364e398c4bffcacdaf74671c1f68603206aa1715e48d4ba74d8d73b49e7158784bae1b6e55b

Download Submit
C:\Users\Admin\AppData\Roaming\A26E.56C

Filesize
996B

MD5
03eaff483c9080003aceae0ebcfd046e

SHA1
cd8884af6a5da596ed2c40678245bddb19abebbc

SHA256
1b53719b83a359daddd92f4d8b5eba2e8327a71d28a43fc76cc59fd2a83d0b50

SHA512
72939c667857478b5b3febd407d4f11c37f807f4bf650ecd2e03a798b502d373f1368b70c6ee04e1b7cdb42212b3227044283a56a21c31df12155eac594aaa37

Download Submit
memory/2072-72-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2072-71-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2484-73-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2484-15-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2484-1-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2484-2-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2484-174-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/3028-6-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/3028-8-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/3028-5-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads