cycbot | ab407357d168b1779cb6e2c9c978002c63c2708caba123f5ebc1aba99afe5cda

General

Target

JaffaCakes118_6f885b5cf83063796df80de97896f57e.exe
Size

178KB
MD5

6f885b5cf83063796df80de97896f57e
SHA1

7530ea982af3ed379ff8edb75d5656a7bd437ab8
SHA256

ab407357d168b1779cb6e2c9c978002c63c2708caba123f5ebc1aba99afe5cda
SHA512

267896d80011eb8499a86f61983e725eb9e025453cb9280e892d19ccf085ce294b5113560fd1da28e90797ab3cf31a62106e1f97bb63f262f2ef0ce7035d7b57
SSDEEP

3072:C2tNXiRKmPgTeVdH0bVr93DKkOwQm72+5/1E0J3MTpVh1zrCdDZxSx/iI:oKm8eV5eilma+5//NM9VTC1ZUB

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/2340-13-0x0000000000400000-0x000000000048C000-memory.dmp	family_cycbot
behavioral1/memory/2340-11-0x0000000000400000-0x000000000048C000-memory.dmp	family_cycbot
behavioral1/memory/2732-14-0x0000000000400000-0x000000000048C000-memory.dmp	family_cycbot
behavioral1/memory/2732-83-0x0000000000400000-0x000000000048C000-memory.dmp	family_cycbot
behavioral1/memory/2600-87-0x0000000000400000-0x000000000048C000-memory.dmp	family_cycbot
behavioral1/memory/2732-146-0x0000000000400000-0x000000000048C000-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_6f885b5cf83063796df80de97896f57e.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 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2732-1-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral1/memory/2340-13-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral1/memory/2340-11-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral1/memory/2732-14-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral1/memory/2732-83-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral1/memory/2600-87-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral1/memory/2732-146-0x0000000000400000-0x000000000048C000-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_6f885b5cf83063796df80de97896f57e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_6f885b5cf83063796df80de97896f57e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_6f885b5cf83063796df80de97896f57e.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2732 wrote to memory of 2340	2732	JaffaCakes118_6f885b5cf83063796df80de97896f57e.exe	30
PID 2732 wrote to memory of 2340	2732	JaffaCakes118_6f885b5cf83063796df80de97896f57e.exe	30
PID 2732 wrote to memory of 2340	2732	JaffaCakes118_6f885b5cf83063796df80de97896f57e.exe	30
PID 2732 wrote to memory of 2340	2732	JaffaCakes118_6f885b5cf83063796df80de97896f57e.exe	30
PID 2732 wrote to memory of 2600	2732	JaffaCakes118_6f885b5cf83063796df80de97896f57e.exe	32
PID 2732 wrote to memory of 2600	2732	JaffaCakes118_6f885b5cf83063796df80de97896f57e.exe	32
PID 2732 wrote to memory of 2600	2732	JaffaCakes118_6f885b5cf83063796df80de97896f57e.exe	32
PID 2732 wrote to memory of 2600	2732	JaffaCakes118_6f885b5cf83063796df80de97896f57e.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6f885b5cf83063796df80de97896f57e.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6f885b5cf83063796df80de97896f57e.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2732
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6f885b5cf83063796df80de97896f57e.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6f885b5cf83063796df80de97896f57e.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2340
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6f885b5cf83063796df80de97896f57e.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6f885b5cf83063796df80de97896f57e.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2600

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\B8B1.942

Filesize
1KB

MD5
a8ecd1c13bf731a9037de48dcfbe38de

SHA1
113537cd21e34004ea4c7e48f70309ab01a08698

SHA256
656eafebbf75458d3d090c82c2e812aa530e9336606c7b05be39c96dde8ff501

SHA512
f5db16143e5f1f177440bcf1c5ef6625000acf6e8c7e5fc6cdc4e6840be44ae8408f6c184036c20bd54021770301bb44204a4adfd0806feecbce9afef4c3a3b4

Download Submit
C:\Users\Admin\AppData\Roaming\B8B1.942

Filesize
600B

MD5
f39d685e5ddf1f9b22f020e338ceed39

SHA1
4f7345fc7e7f7c881dee575b473f96d2c691d154

SHA256
8360566e7b3bdec7df90a89a0d5626c65c45866eed90f0a691acba626f75cc3e

SHA512
ca63a53684147ee4177e6512dedca3f3b4d578a4d69dfc6e813c3b996323972f1f1961d56e0f715e17552ce3389f5ad9f8e10fec241d1c02637537cefb614ae7

Download Submit
C:\Users\Admin\AppData\Roaming\B8B1.942

Filesize
996B

MD5
53deb05363d33bd838cf565e8dd5b8f4

SHA1
f90cb498de07858de93d50318b568b09ff93fa4d

SHA256
9e3a1fb172a27af18cccf80708e3aac66e64fb1d85ea0f88f6e7c3568a0a5326

SHA512
54e130b67c9fa91fa714ed8ca83a5c64ecea7381734afd9f3ad3223d4f1fc3bfce5d79737a58455cc1525fb86dd94fe1e33678f4f6809ff54cec5eb0a19a8712

Download Submit
memory/2340-13-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2340-11-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2600-85-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2600-87-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2732-1-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2732-14-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2732-83-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2732-146-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads