cycbot | a0587260a4dddae640878f7258e1880d6e9699598138acf2f3152383f485a5c7

General

Target

JaffaCakes118_34473d67fd0b8eedd313a26ae1f5f9a0.exe
Size

178KB
MD5

34473d67fd0b8eedd313a26ae1f5f9a0
SHA1

8bf27e0489a6774df30a4e72d951eee1c5fdbeff
SHA256

a0587260a4dddae640878f7258e1880d6e9699598138acf2f3152383f485a5c7
SHA512

1cb3f58287ba8d6d0aaa5b517f87b22c7c8f8c81b2a4bcfda58ab08103361ac8142a3ada0408275447544397086ef4b9c7d8d932d88d477c63a6eb83b6d68785
SSDEEP

3072:HF8h3rEGnHZfg15j6o7ouFD5txqo5rjuv+Q3ZWTZHv7nhR1cJCd8ahjau9M17mjw:HF8rVH1C52o7lFAo5OGQ0TZusd82/9M7

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/2240-8-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/2240-7-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/2068-16-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/2068-76-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/2504-80-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/2068-175-0x0000000000400000-0x000000000046E000-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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_34473d67fd0b8eedd313a26ae1f5f9a0.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/2068-2-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2240-5-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2240-8-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2240-7-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2068-16-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2068-76-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2240-77-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2504-79-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2504-80-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2068-175-0x0000000000400000-0x000000000046E000-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	JaffaCakes118_34473d67fd0b8eedd313a26ae1f5f9a0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_34473d67fd0b8eedd313a26ae1f5f9a0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_34473d67fd0b8eedd313a26ae1f5f9a0.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2068 wrote to memory of 2240	2068	JaffaCakes118_34473d67fd0b8eedd313a26ae1f5f9a0.exe	30
PID 2068 wrote to memory of 2240	2068	JaffaCakes118_34473d67fd0b8eedd313a26ae1f5f9a0.exe	30
PID 2068 wrote to memory of 2240	2068	JaffaCakes118_34473d67fd0b8eedd313a26ae1f5f9a0.exe	30
PID 2068 wrote to memory of 2240	2068	JaffaCakes118_34473d67fd0b8eedd313a26ae1f5f9a0.exe	30
PID 2068 wrote to memory of 2504	2068	JaffaCakes118_34473d67fd0b8eedd313a26ae1f5f9a0.exe	33
PID 2068 wrote to memory of 2504	2068	JaffaCakes118_34473d67fd0b8eedd313a26ae1f5f9a0.exe	33
PID 2068 wrote to memory of 2504	2068	JaffaCakes118_34473d67fd0b8eedd313a26ae1f5f9a0.exe	33
PID 2068 wrote to memory of 2504	2068	JaffaCakes118_34473d67fd0b8eedd313a26ae1f5f9a0.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_34473d67fd0b8eedd313a26ae1f5f9a0.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_34473d67fd0b8eedd313a26ae1f5f9a0.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2068
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_34473d67fd0b8eedd313a26ae1f5f9a0.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_34473d67fd0b8eedd313a26ae1f5f9a0.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2240
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_34473d67fd0b8eedd313a26ae1f5f9a0.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_34473d67fd0b8eedd313a26ae1f5f9a0.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2504

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\CB1F.401

Filesize
1KB

MD5
b20d896d5494b9e60ebea81ba5ea0bc1

SHA1
080d51f4e9061c93ed0d18eb33785a696bedf65f

SHA256
a9f895f6045ea53bfcf826e34890603cd8e0df0aa7d8bb2da4092d8fdd589611

SHA512
05d5f862e1eca54e21caad686c687dc4d885359f14df3318075e2a75481b69f5c3f4c908957a6a24fe239bb23c6136b99dd36f84544970dbf11f449a755c37fd

Download Submit
C:\Users\Admin\AppData\Roaming\CB1F.401

Filesize
600B

MD5
6616639334ee9fc3a79bf7205115186a

SHA1
ae2a272a32370311bf5a00972deee74228bb0e1d

SHA256
641982aeff0872e3f8bdc1941beab1c80256c90145a543f7146c1a148392a997

SHA512
8256549203f59eec53e44501d59f956b7816b80cd9bbbdfaeb4b2416f405d2b9a93747fbc00cfcfb17d9c6a9d6808d53f4a624ecba94846a7b18fdbfc2f49526

Download Submit
memory/2068-76-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2068-2-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2068-175-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2068-1-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2068-16-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2240-8-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2240-77-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2240-7-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2240-5-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2504-79-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2504-80-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads