cycbot | 6aac1af77d70f17af5eab29486c50e1564b354f658e37eb796c7a58598071199

General

Target

JaffaCakes118_e1414c52a5105fb9d7c4b5c3313ebdb9.exe
Size

168KB
MD5

e1414c52a5105fb9d7c4b5c3313ebdb9
SHA1

92fa9c69f288cd6333b96598a09fa49ff3f4de31
SHA256

6aac1af77d70f17af5eab29486c50e1564b354f658e37eb796c7a58598071199
SHA512

4966c513a14ef8024f0bf7498bcdf65fc6c33504ed50ba153f127e9659215b0a5ac0971d2d87710d9df4a3cda6184c04606ade2fe843ff68a6cdf0aec93f2ab8
SSDEEP

3072:J/39g5/lBmH6/sizOm3DwFIbZEExG7hCkBlclpoUt9+:J/NW31sizOSDQmccP+

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 7 IoCs

Cycbot is a backdoor and trojan written in C++.

resource	yara_rule
behavioral1/memory/2524-6-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/2092-14-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/2524-78-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/2092-77-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/876-83-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/2092-150-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/2092-185-0x0000000000400000-0x000000000046A000-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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_e1414c52a5105fb9d7c4b5c3313ebdb9.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/2092-2-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2524-6-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2092-14-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2524-78-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2092-77-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/876-80-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/876-81-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/876-83-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2092-150-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2092-185-0x0000000000400000-0x000000000046A000-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_e1414c52a5105fb9d7c4b5c3313ebdb9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_e1414c52a5105fb9d7c4b5c3313ebdb9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_e1414c52a5105fb9d7c4b5c3313ebdb9.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2092 wrote to memory of 2524	2092	JaffaCakes118_e1414c52a5105fb9d7c4b5c3313ebdb9.exe	28
PID 2092 wrote to memory of 2524	2092	JaffaCakes118_e1414c52a5105fb9d7c4b5c3313ebdb9.exe	28
PID 2092 wrote to memory of 2524	2092	JaffaCakes118_e1414c52a5105fb9d7c4b5c3313ebdb9.exe	28
PID 2092 wrote to memory of 2524	2092	JaffaCakes118_e1414c52a5105fb9d7c4b5c3313ebdb9.exe	28
PID 2092 wrote to memory of 876	2092	JaffaCakes118_e1414c52a5105fb9d7c4b5c3313ebdb9.exe	30
PID 2092 wrote to memory of 876	2092	JaffaCakes118_e1414c52a5105fb9d7c4b5c3313ebdb9.exe	30
PID 2092 wrote to memory of 876	2092	JaffaCakes118_e1414c52a5105fb9d7c4b5c3313ebdb9.exe	30
PID 2092 wrote to memory of 876	2092	JaffaCakes118_e1414c52a5105fb9d7c4b5c3313ebdb9.exe	30

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e1414c52a5105fb9d7c4b5c3313ebdb9.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e1414c52a5105fb9d7c4b5c3313ebdb9.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2092
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e1414c52a5105fb9d7c4b5c3313ebdb9.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e1414c52a5105fb9d7c4b5c3313ebdb9.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2524
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e1414c52a5105fb9d7c4b5c3313ebdb9.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e1414c52a5105fb9d7c4b5c3313ebdb9.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:876

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\BE23.671

Filesize
600B

MD5
59634384a1a5255cc38874fa44be1017

SHA1
c0b2542439b2e3023e887cb48fda599a70a19df0

SHA256
22cc11e66c2025fe7a2a95192b5de1d18a1fca0dc63e21a77cc1912a460cac4c

SHA512
47618425dbac978593d7cbb4cb9c87c167af92ecf73fd32c2f978556fbdd78b89fa4e5c51b917e40758c6a7ca266afd68db69a7b8424b04a9caa760397ac2cd1

Download Submit
C:\Users\Admin\AppData\Roaming\BE23.671

Filesize
1KB

MD5
2267dca6a4f79bbcef8b492bbbcc1ab9

SHA1
73258c7b6ac194657c2539151ee5463af2e1bde4

SHA256
d7b1e82550886b2bc14b9668cddc6ffc3fb9abf95e209d8f852f325317981434

SHA512
064b8ff5bd496942682db4b2d4573da0bdefe5d29cd805108671add4efdd9614b0c13e294b07476b64ed4d19627c8f212de77a2f6f0315e13475ee71b13f79c4

Download Submit
C:\Users\Admin\AppData\Roaming\BE23.671

Filesize
996B

MD5
b9fdf5dd1fb4b81f2ff684de7c986897

SHA1
6851dc596a1c29e343b18ec17ef3d169f55491fb

SHA256
1aaceffb5a26f40d785b4c5149507f0e57aa0887f3536545332639a4ac61966c

SHA512
783ce442a613142e1b12de8f79f532305219fd75ccb140aa5fc5ee94bc2bd6318c6524c18548e93a3914e7cddee6683e60b92b72531bb969e33d07a594f63b4e

Download Submit
memory/876-81-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/876-80-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/876-83-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2092-14-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2092-77-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2092-1-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2092-150-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2092-2-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2092-185-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2524-6-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2524-78-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads