cycbot | 1a0e4e1a66c8074e7c5120134f24b6eb31af3c461aedcc09d6e46be661be5664

General

Target

1a0e4e1a66c8074e7c5120134f24b6eb31af3c461aedcc09d6e46be661be5664N.exe
Size

173KB
MD5

e74886b56828724381864cbd4a02d970
SHA1

b7c867ec52da12c73047b7e6ddbc43e92ca439df
SHA256

1a0e4e1a66c8074e7c5120134f24b6eb31af3c461aedcc09d6e46be661be5664
SHA512

2979afee4da2612fe8e1dc33f8e07326324b282e058ad1600a303dc1fc8802805424e64326c5ad6d48580da5121c00505078a4b608af8a7567241a604e2ee0ef
SSDEEP

3072:ct4uQ++kNoWKAjL5S+QNGS0CjBYP3TB4yHYMJwD28/HMZwF59Pi2:ctRFIAwjHX9YPiIY9SMEs

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/3028-8-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2372-16-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2372-79-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/1648-82-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2372-198-0x0000000000400000-0x000000000048A000-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-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	1a0e4e1a66c8074e7c5120134f24b6eb31af3c461aedcc09d6e46be661be5664N.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/2372-2-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2372-1-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/3028-5-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/3028-8-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/3028-6-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2372-16-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2372-79-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/1648-82-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2372-198-0x0000000000400000-0x000000000048A000-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	1a0e4e1a66c8074e7c5120134f24b6eb31af3c461aedcc09d6e46be661be5664N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1a0e4e1a66c8074e7c5120134f24b6eb31af3c461aedcc09d6e46be661be5664N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1a0e4e1a66c8074e7c5120134f24b6eb31af3c461aedcc09d6e46be661be5664N.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2372 wrote to memory of 3028	2372	1a0e4e1a66c8074e7c5120134f24b6eb31af3c461aedcc09d6e46be661be5664N.exe	30
PID 2372 wrote to memory of 3028	2372	1a0e4e1a66c8074e7c5120134f24b6eb31af3c461aedcc09d6e46be661be5664N.exe	30
PID 2372 wrote to memory of 3028	2372	1a0e4e1a66c8074e7c5120134f24b6eb31af3c461aedcc09d6e46be661be5664N.exe	30
PID 2372 wrote to memory of 3028	2372	1a0e4e1a66c8074e7c5120134f24b6eb31af3c461aedcc09d6e46be661be5664N.exe	30
PID 2372 wrote to memory of 1648	2372	1a0e4e1a66c8074e7c5120134f24b6eb31af3c461aedcc09d6e46be661be5664N.exe	32
PID 2372 wrote to memory of 1648	2372	1a0e4e1a66c8074e7c5120134f24b6eb31af3c461aedcc09d6e46be661be5664N.exe	32
PID 2372 wrote to memory of 1648	2372	1a0e4e1a66c8074e7c5120134f24b6eb31af3c461aedcc09d6e46be661be5664N.exe	32
PID 2372 wrote to memory of 1648	2372	1a0e4e1a66c8074e7c5120134f24b6eb31af3c461aedcc09d6e46be661be5664N.exe	32

C:\Users\Admin\AppData\Local\Temp\1a0e4e1a66c8074e7c5120134f24b6eb31af3c461aedcc09d6e46be661be5664N.exe
"C:\Users\Admin\AppData\Local\Temp\1a0e4e1a66c8074e7c5120134f24b6eb31af3c461aedcc09d6e46be661be5664N.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2372
- C:\Users\Admin\AppData\Local\Temp\1a0e4e1a66c8074e7c5120134f24b6eb31af3c461aedcc09d6e46be661be5664N.exe
  C:\Users\Admin\AppData\Local\Temp\1a0e4e1a66c8074e7c5120134f24b6eb31af3c461aedcc09d6e46be661be5664N.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\1a0e4e1a66c8074e7c5120134f24b6eb31af3c461aedcc09d6e46be661be5664N.exe
  C:\Users\Admin\AppData\Local\Temp\1a0e4e1a66c8074e7c5120134f24b6eb31af3c461aedcc09d6e46be661be5664N.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1648

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\6486.FEB

Filesize
1KB

MD5
0c2959e29a9425afdd5fb8ed9c16a117

SHA1
806a60b537cbeaa6543463ea2f70835fa5037052

SHA256
2bb83dd8d554eabe125b6e2a4462e611151972632b22a3ec34c086e91473a796

SHA512
20c1fc4910743a22a4eacb85de82236329679f3c52ac1d153f0613616cfff683a129bd10c9d347fa93c2aa38899cc8d27a0188618c266f404785b977545ddd3e

Download Submit
C:\Users\Admin\AppData\Roaming\6486.FEB

Filesize
600B

MD5
e5deed3b95d24815d0598c1d381d2841

SHA1
61d58bf9b89c224108a2b613d3d4fe0013f0ec2d

SHA256
c5a10bd14fd299d27617b561e4fd342c04155cfffb2ba021bd2a735772aeff60

SHA512
3fdda9190edd732e9e821a4818759ef1362ac390c6a79499787260df4afceb75f5696bd1770c67c83d672ae5a6952a3086d9434a17994c746d3bdc173fbfdf04

Download Submit
C:\Users\Admin\AppData\Roaming\6486.FEB

Filesize
996B

MD5
270669aced3c9cd585aa44387888dfad

SHA1
04728d102fee3f2c700b27594e5ea51a6cb8aed7

SHA256
d41a52a5ee8219d18f1ba974cde72e28c58d2974c32a60cd027c4909cc85d60e

SHA512
e12590bfd29bb79b1b7f64616eb2b23dac498c4903e6eab014f4a903c6a3859ab823423ffe775813cd10c4a9404264ca020e4f3dcfe1d364cd793ddd7f290f49

Download Submit
memory/1648-82-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/1648-81-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2372-16-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2372-79-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2372-2-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2372-1-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2372-198-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/3028-6-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/3028-8-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/3028-5-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads