cycbot | c6f79560d75fa7e7aed3dc0ed4a409b2da1079801f3c825b3537d993652a3845

General

Target

e3563b8f44d31ee37795092a84a4528e_JaffaCakes118.exe
Size

176KB
MD5

e3563b8f44d31ee37795092a84a4528e
SHA1

aeea6518b9129f6c25a98a5932eb36a257286feb
SHA256

c6f79560d75fa7e7aed3dc0ed4a409b2da1079801f3c825b3537d993652a3845
SHA512

1fea4eb86b76317f6dcf22e01c22eb197b569dbcf823e16de5b70446453da511bb47639bdb97a87beb44889fd381ffaba8422847fbd93e08d642b66b9848336e
SSDEEP

3072:PZsEiz8LfmCmKSkPcJjmQk3yt+IymbuAB2RKwRB/pjWwbeSG:PZsE+K7cJjXk3ypyxezGB/pSwbeS

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/2212-19-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/1736-20-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/1316-81-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/1736-82-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/1736-184-0x0000000000400000-0x000000000046E000-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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	e3563b8f44d31ee37795092a84a4528e_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 10 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1736-1-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/1736-2-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2212-17-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2212-18-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2212-19-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/1736-20-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/1316-80-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/1316-81-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/1736-82-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/1736-184-0x0000000000400000-0x000000000046E000-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	e3563b8f44d31ee37795092a84a4528e_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e3563b8f44d31ee37795092a84a4528e_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e3563b8f44d31ee37795092a84a4528e_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1736 wrote to memory of 2212	1736	e3563b8f44d31ee37795092a84a4528e_JaffaCakes118.exe	30
PID 1736 wrote to memory of 2212	1736	e3563b8f44d31ee37795092a84a4528e_JaffaCakes118.exe	30
PID 1736 wrote to memory of 2212	1736	e3563b8f44d31ee37795092a84a4528e_JaffaCakes118.exe	30
PID 1736 wrote to memory of 2212	1736	e3563b8f44d31ee37795092a84a4528e_JaffaCakes118.exe	30
PID 1736 wrote to memory of 1316	1736	e3563b8f44d31ee37795092a84a4528e_JaffaCakes118.exe	32
PID 1736 wrote to memory of 1316	1736	e3563b8f44d31ee37795092a84a4528e_JaffaCakes118.exe	32
PID 1736 wrote to memory of 1316	1736	e3563b8f44d31ee37795092a84a4528e_JaffaCakes118.exe	32
PID 1736 wrote to memory of 1316	1736	e3563b8f44d31ee37795092a84a4528e_JaffaCakes118.exe	32

C:\Users\Admin\AppData\Local\Temp\e3563b8f44d31ee37795092a84a4528e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e3563b8f44d31ee37795092a84a4528e_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1736
- C:\Users\Admin\AppData\Local\Temp\e3563b8f44d31ee37795092a84a4528e_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\e3563b8f44d31ee37795092a84a4528e_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2212
- C:\Users\Admin\AppData\Local\Temp\e3563b8f44d31ee37795092a84a4528e_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\e3563b8f44d31ee37795092a84a4528e_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1316

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\1BA0.10D

Filesize
597B

MD5
b6c2912cdceb38ebdce47fed36c7448e

SHA1
0311a6384241283d41f86e997ece93f08a5ac733

SHA256
c2e0d07f306cf06e5e96919de32ab1c2b5daf01d9ddf80448df2d84c05ce9345

SHA512
fa116d142bd6472fdb313b17a0b66e42bf76a1b881a4a3ea31a4d1d9e4c7a33aad86672b16fcda4af71ac4b97e048ed38ed241b7ae501c2091f5bfc77c1637e9

Download Submit
C:\Users\Admin\AppData\Roaming\1BA0.10D

Filesize
1KB

MD5
5cda7ae1bc8fe37b21d6701c31f08060

SHA1
a67e9e29e651e7216ed7e693487c1eeede2a8b6b

SHA256
0aea54ed57c23004c9ffce7983c57fde43b5b52d438c5e45c8c1f5654cc0c5aa

SHA512
4d1e4e19f425e62a9b2e10b8fe83732f816a1cf6b3a57a0886ddb1983e6b8f0ae69dbe12d23b5fd7f5ab67dc4499292ef139d85774a759050c3ab4241f098fab

Download Submit
C:\Users\Admin\AppData\Roaming\1BA0.10D

Filesize
897B

MD5
c751c3b932e4f969f0d00a208556c5eb

SHA1
aa7bcc83a37c97ff89d4c5a746e6d4b4a131adfe

SHA256
59ff95216d008f1fe1d9a2fef40b84daae1ad7f12f54d8fcf666738a126604b8

SHA512
adc7aa7e115171793b9938ad054ff5206f8355f85ab58acbbfa4649286b887b0569c0db8e9b333783cc948a80189018d573c42d3fb09ea6463e8d792e54da025

Download Submit
C:\Users\Admin\AppData\Roaming\1BA0.10D

Filesize
1KB

MD5
69893fbed5e696a53540e11af5739dd6

SHA1
94170ce4849028bd8a158aa36e5e4cbf00e83675

SHA256
95bedb6ebbcb78b5c06e72aff31a1f4f2cdcc20d6133dd83d510daaab96d865c

SHA512
3a562c0efa1757f100639c65bb21b2ff79117003d06172527180d9ecafc179d80b3bcf2d894db3753f95a520ced4ebb683f056b24ffdff57b53d64ed508aa183

Download Submit
memory/1316-81-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1316-79-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1316-80-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1736-20-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1736-1-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1736-82-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1736-2-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1736-184-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2212-19-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2212-18-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2212-17-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads