cycbot | d4e518e98bbbe18c36e773dc7baefaeb6f25138e498cdf084c96efa4969cfcf9

General

Target

d4e518e98bbbe18c36e773dc7baefaeb6f25138e498cdf084c96efa4969cfcf9.exe
Size

167KB
MD5

7e491419646116c38b978f2ee850d804
SHA1

9077bfdc44afab533a9cdfaf1144fa133650bfdf
SHA256

d4e518e98bbbe18c36e773dc7baefaeb6f25138e498cdf084c96efa4969cfcf9
SHA512

400a44b83b25ead75c9d5389fce6e9f5beb3a45dfb67902104ca83ce028e8f58c95d0b5b4ecf53a6b973fb9ed7151cf1f0eb25a7d5bd87ed407b07b1e8081b2e
SSDEEP

3072:QOXbTyNkYhsO1d3NTw8RgA/LqNExmHURwslnInWbUt+w/o:vyNrhd1w8RDxmHURJlWWbU+

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/2020-9-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/1720-20-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/1720-89-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2296-93-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/1720-204-0x0000000000400000-0x000000000048A000-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"	d4e518e98bbbe18c36e773dc7baefaeb6f25138e498cdf084c96efa4969cfcf9.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 9 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1720-2-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2020-7-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2020-8-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2020-9-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/1720-20-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/1720-89-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2296-91-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2296-93-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/1720-204-0x0000000000400000-0x000000000048A000-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	d4e518e98bbbe18c36e773dc7baefaeb6f25138e498cdf084c96efa4969cfcf9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d4e518e98bbbe18c36e773dc7baefaeb6f25138e498cdf084c96efa4969cfcf9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d4e518e98bbbe18c36e773dc7baefaeb6f25138e498cdf084c96efa4969cfcf9.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1720 wrote to memory of 2020	1720	d4e518e98bbbe18c36e773dc7baefaeb6f25138e498cdf084c96efa4969cfcf9.exe	30
PID 1720 wrote to memory of 2020	1720	d4e518e98bbbe18c36e773dc7baefaeb6f25138e498cdf084c96efa4969cfcf9.exe	30
PID 1720 wrote to memory of 2020	1720	d4e518e98bbbe18c36e773dc7baefaeb6f25138e498cdf084c96efa4969cfcf9.exe	30
PID 1720 wrote to memory of 2020	1720	d4e518e98bbbe18c36e773dc7baefaeb6f25138e498cdf084c96efa4969cfcf9.exe	30
PID 1720 wrote to memory of 2296	1720	d4e518e98bbbe18c36e773dc7baefaeb6f25138e498cdf084c96efa4969cfcf9.exe	33
PID 1720 wrote to memory of 2296	1720	d4e518e98bbbe18c36e773dc7baefaeb6f25138e498cdf084c96efa4969cfcf9.exe	33
PID 1720 wrote to memory of 2296	1720	d4e518e98bbbe18c36e773dc7baefaeb6f25138e498cdf084c96efa4969cfcf9.exe	33
PID 1720 wrote to memory of 2296	1720	d4e518e98bbbe18c36e773dc7baefaeb6f25138e498cdf084c96efa4969cfcf9.exe	33

C:\Users\Admin\AppData\Local\Temp\d4e518e98bbbe18c36e773dc7baefaeb6f25138e498cdf084c96efa4969cfcf9.exe
"C:\Users\Admin\AppData\Local\Temp\d4e518e98bbbe18c36e773dc7baefaeb6f25138e498cdf084c96efa4969cfcf9.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1720
- C:\Users\Admin\AppData\Local\Temp\d4e518e98bbbe18c36e773dc7baefaeb6f25138e498cdf084c96efa4969cfcf9.exe
  C:\Users\Admin\AppData\Local\Temp\d4e518e98bbbe18c36e773dc7baefaeb6f25138e498cdf084c96efa4969cfcf9.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2020
- C:\Users\Admin\AppData\Local\Temp\d4e518e98bbbe18c36e773dc7baefaeb6f25138e498cdf084c96efa4969cfcf9.exe
  C:\Users\Admin\AppData\Local\Temp\d4e518e98bbbe18c36e773dc7baefaeb6f25138e498cdf084c96efa4969cfcf9.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2296

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\2DC3.3E7

Filesize
597B

MD5
3126d730bcc810e38dcd4512c5cfd0e6

SHA1
61f2e781b381d66ba52245ed2fa4ab27d8b2fafd

SHA256
f896fe5b66f65cf1946d0734a15f8624f6ca7ee1ced4fdf9392fbc455acbe411

SHA512
d5b3152f50d1c97d96119bb055004253b3ee307b27f9c73cc98d8d0fcbf5afe5f161d118202cb01823a8f9df8d951303cc7cc68252a16e999632c96da1914e69

Download Submit
C:\Users\Admin\AppData\Roaming\2DC3.3E7

Filesize
1KB

MD5
c6bab44fe7dc4cd3c398602322c812d2

SHA1
59651975b84bf5372287d34cfb54a79bf1937a10

SHA256
983265e3a6685f120c0fb812c89dd16fb7716dfa9ba67373e8e59ce257f548b5

SHA512
f3d75bc71c2db5ac85cccda2ed43bad84802c560be21dedc65f29f32722950645e26f271aa74286c1478e3b49406a1e6b248478044f990b445872506d9f1f624

Download Submit
C:\Users\Admin\AppData\Roaming\2DC3.3E7

Filesize
897B

MD5
5994acac5a5e45b7ce2de93c47b836dc

SHA1
0d1fab0693c3fafd95fe4004e792960b72c29167

SHA256
3bd5e425a2131882e0a23f49c28158255e006655294f9fe680d2489570e357fe

SHA512
baf73ae53d87c7e013fd872e489aa2358b429d634a8d5a61d772faa440e6d96452a49ba7427ae90f15bfa3d253d7de87262a9f4ed1d32063717191bc8ae2b5da

Download Submit
C:\Users\Admin\AppData\Roaming\2DC3.3E7

Filesize
1KB

MD5
b6b47f30c6567baf9c99292dd69e9b03

SHA1
6c7b1f72b05229ffdf2c14ce661513d024494999

SHA256
c24552a998da95ee1e46f50841f4c11668dad0cdb02d5a1326903615a5bbd0f9

SHA512
f872e6230209a3591ba0305ddd1c870e4ce15263062f7546ff19ecc134b0eed95c435b7b93915d96308296d6cc4dabffa763ef8a6e1b97ad35e8728548abd8d0

Download Submit
memory/1720-89-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/1720-20-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/1720-1-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/1720-2-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/1720-204-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2020-9-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2020-8-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2020-7-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2296-91-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2296-93-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads