cycbot | c86754080341471175b6205e1162f35f1ca02acaf9f487ccc50b3db7f682d22d

General

Target

JaffaCakes118_6d067b3dca524db72ee007e2ba6de8ee.exe
Size

177KB
MD5

6d067b3dca524db72ee007e2ba6de8ee
SHA1

60ddfe6a62b38490780543975f27d8dbf34347bb
SHA256

c86754080341471175b6205e1162f35f1ca02acaf9f487ccc50b3db7f682d22d
SHA512

e74c5a6549c088a8e1746a7e77fe30eaac0ae0b5ae10da5158d7bff1911561cbdf6281c119b64f3d4dd076a317a727fde674f7057cf85732b3f8f9ca37216b17
SSDEEP

3072:qefcNcgE1c8zKX1xRJCPz+Y2yfoP+z9/kpzFOtGSeaA14W6cqavKkn2Vrq:KGr6rlP8PztwPnctGS814PBayv

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/2564-15-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/2564-13-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/2076-16-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/2076-93-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/2076-197-0x0000000000400000-0x000000000046E000-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"	JaffaCakes118_6d067b3dca524db72ee007e2ba6de8ee.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/2076-1-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2076-2-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2564-15-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2564-13-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2564-12-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2076-16-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2076-93-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2076-197-0x0000000000400000-0x000000000046E000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3036	1576	WerFault.exe	32

System Location Discovery: System Language Discovery 1 TTPs 2 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_6d067b3dca524db72ee007e2ba6de8ee.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_6d067b3dca524db72ee007e2ba6de8ee.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2076 wrote to memory of 2564	2076	JaffaCakes118_6d067b3dca524db72ee007e2ba6de8ee.exe	30
PID 2076 wrote to memory of 2564	2076	JaffaCakes118_6d067b3dca524db72ee007e2ba6de8ee.exe	30
PID 2076 wrote to memory of 2564	2076	JaffaCakes118_6d067b3dca524db72ee007e2ba6de8ee.exe	30
PID 2076 wrote to memory of 2564	2076	JaffaCakes118_6d067b3dca524db72ee007e2ba6de8ee.exe	30
PID 2076 wrote to memory of 1576	2076	JaffaCakes118_6d067b3dca524db72ee007e2ba6de8ee.exe	32
PID 2076 wrote to memory of 1576	2076	JaffaCakes118_6d067b3dca524db72ee007e2ba6de8ee.exe	32
PID 2076 wrote to memory of 1576	2076	JaffaCakes118_6d067b3dca524db72ee007e2ba6de8ee.exe	32
PID 2076 wrote to memory of 1576	2076	JaffaCakes118_6d067b3dca524db72ee007e2ba6de8ee.exe	32
PID 1576 wrote to memory of 3036	1576	JaffaCakes118_6d067b3dca524db72ee007e2ba6de8ee.exe	33
PID 1576 wrote to memory of 3036	1576	JaffaCakes118_6d067b3dca524db72ee007e2ba6de8ee.exe	33
PID 1576 wrote to memory of 3036	1576	JaffaCakes118_6d067b3dca524db72ee007e2ba6de8ee.exe	33
PID 1576 wrote to memory of 3036	1576	JaffaCakes118_6d067b3dca524db72ee007e2ba6de8ee.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6d067b3dca524db72ee007e2ba6de8ee.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6d067b3dca524db72ee007e2ba6de8ee.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2076
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6d067b3dca524db72ee007e2ba6de8ee.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6d067b3dca524db72ee007e2ba6de8ee.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  PID:2564
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6d067b3dca524db72ee007e2ba6de8ee.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6d067b3dca524db72ee007e2ba6de8ee.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1576
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1576 -s 120
    3⤵
    - Program crash
    PID:3036

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\D4C9.67F

Filesize
1KB

MD5
e5b75ce790300bcf0c349c821886363a

SHA1
5c164eab101951d83eed2db7c75ddbdbec8a588f

SHA256
c199dba3435fcdb3591b173fcc623caef3a727844c565dc685a6b8b8dd607100

SHA512
33b964f7cd3e43a0c54ca673044f0046ca941f09dacea751856aeef30f84225ce4f33c5ced6926a84eeca34ba7e215cbe70f7530b420a623305035696c0aeec7

Download Submit
C:\Users\Admin\AppData\Roaming\D4C9.67F

Filesize
600B

MD5
975350c34f3959dea15d4c13a531cac3

SHA1
e762264468a8a774de69b5a931b42fa5aa8de0ab

SHA256
5055499b62f5a873635876db000361ae18dc89eb3b4c717549ec88fae4b22441

SHA512
ff9c5d1c6484e984fb902be9fc3a526568b1a5bd992801a3213a1e57954da12f0e61ed29ae4919efcd828e4c42b79b17cc4503b436d6d48601667e8716a64cca

Download Submit
C:\Users\Admin\AppData\Roaming\D4C9.67F

Filesize
996B

MD5
a9466c398f944b34d3cda6f51223d954

SHA1
19fe007167389609657e1c857f5cdf32e17395cc

SHA256
b452dc5828484d981c3ecd556778451f9a8b1135763bba7f3cc08068eabf8971

SHA512
0fedb18d20994ebd470d3b27176b02b56f0b0b80489820389f08071317efe1bbf1d4e42b7274e0e9bc8359af151916e86d56200d72be7535474f4bf58efaf567

Download Submit
memory/1576-92-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2076-1-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2076-2-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2076-16-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2076-93-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2076-197-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2564-15-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2564-13-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2564-12-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads