cycbot | a456c332b4b8fc68a928dbb2bc10ec48a0a6924ae3d19254987ac1fc2370b3bb

General

Target

JaffaCakes118_995ebf875b324eb7e3fcc3d50beb6b49.exe
Size

176KB
MD5

995ebf875b324eb7e3fcc3d50beb6b49
SHA1

487733bcbdaf1b7e0625e58bdaae20423b745468
SHA256

a456c332b4b8fc68a928dbb2bc10ec48a0a6924ae3d19254987ac1fc2370b3bb
SHA512

2bdb6d0c3fe14401f575dcfb2673b2c3a84bdcd8508a29f1c6148448422c25fd573769ff71544fc4ab62c437abe946febb3ee87eeca1f60fc7a140b7f7c82b05
SSDEEP

3072:5s9YHZ3H/PMYZ3NzNG/AETua0PlalX8bC3hI8Y6bq58DWGOxc6LDLBAiFmtbO:5rVPV6/AE6pNaZHu8YYqPlFmg

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/2388-15-0x0000000000400000-0x000000000046C000-memory.dmp	family_cycbot
behavioral1/memory/2388-13-0x0000000000400000-0x000000000046C000-memory.dmp	family_cycbot
behavioral1/memory/2212-16-0x0000000000400000-0x000000000046C000-memory.dmp	family_cycbot
behavioral1/memory/2920-88-0x0000000000400000-0x000000000046C000-memory.dmp	family_cycbot
behavioral1/memory/2920-90-0x0000000000400000-0x000000000046C000-memory.dmp	family_cycbot
behavioral1/memory/2212-91-0x0000000000400000-0x000000000046C000-memory.dmp	family_cycbot
behavioral1/memory/2212-159-0x0000000000400000-0x000000000046C000-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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_995ebf875b324eb7e3fcc3d50beb6b49.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/2212-2-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2388-15-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2388-13-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2212-16-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2920-88-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2920-90-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2212-91-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2212-159-0x0000000000400000-0x000000000046C000-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_995ebf875b324eb7e3fcc3d50beb6b49.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_995ebf875b324eb7e3fcc3d50beb6b49.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_995ebf875b324eb7e3fcc3d50beb6b49.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2212 wrote to memory of 2388	2212	JaffaCakes118_995ebf875b324eb7e3fcc3d50beb6b49.exe	30
PID 2212 wrote to memory of 2388	2212	JaffaCakes118_995ebf875b324eb7e3fcc3d50beb6b49.exe	30
PID 2212 wrote to memory of 2388	2212	JaffaCakes118_995ebf875b324eb7e3fcc3d50beb6b49.exe	30
PID 2212 wrote to memory of 2388	2212	JaffaCakes118_995ebf875b324eb7e3fcc3d50beb6b49.exe	30
PID 2212 wrote to memory of 2920	2212	JaffaCakes118_995ebf875b324eb7e3fcc3d50beb6b49.exe	32
PID 2212 wrote to memory of 2920	2212	JaffaCakes118_995ebf875b324eb7e3fcc3d50beb6b49.exe	32
PID 2212 wrote to memory of 2920	2212	JaffaCakes118_995ebf875b324eb7e3fcc3d50beb6b49.exe	32
PID 2212 wrote to memory of 2920	2212	JaffaCakes118_995ebf875b324eb7e3fcc3d50beb6b49.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_995ebf875b324eb7e3fcc3d50beb6b49.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_995ebf875b324eb7e3fcc3d50beb6b49.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2212
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_995ebf875b324eb7e3fcc3d50beb6b49.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_995ebf875b324eb7e3fcc3d50beb6b49.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2388
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_995ebf875b324eb7e3fcc3d50beb6b49.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_995ebf875b324eb7e3fcc3d50beb6b49.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2920

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\20B3.F09

Filesize
1KB

MD5
8c191b448a233361af3e81e092130d63

SHA1
2f6f1c219c62531d595130057a90b6d6b2427c48

SHA256
ac5f2c98c2cb9ececddc537c3174c37b348a26022408b31b647e992696b512de

SHA512
7e15b9c7a40fa8ba91316f1f548b6dbecfe653f289016fa3754980a5a9ad9bb42fc77cab0e0e00bc2c5780b006b06c65126e34c409bf3ad417e730989c0d2341

Download Submit
C:\Users\Admin\AppData\Roaming\20B3.F09

Filesize
600B

MD5
957d2e0494dd5cd476d7f186bf5ae36e

SHA1
eb1847d5a037787b612cff1dea64c66551ffc487

SHA256
286f01c34c67094cb2258e189fa8fe7b15f4748a8b92408e4e747d62c671b216

SHA512
520a03409802cdd1fd8e22f8d84f5df03a6c4887e82d4372b8c64ab7baa321b28b5267cd574c82b0721f0a1bf502a4434159a3aae7d94024c9430bdb1de9eed6

Download Submit
C:\Users\Admin\AppData\Roaming\20B3.F09

Filesize
996B

MD5
84f248a8f54f33f2359be8c465133faf

SHA1
f1be2ff5cdaf60992403dbf1e1c25f92279c66a9

SHA256
829f41d0bcaf379f6d9931e36596f96f55ee7166a25196bad65613e83faae9ba

SHA512
cd65346163ce82e2473938d72dee5718523db1f0971b31bda531d5fd78434d943e7ca6ee5b603c5318f5c2959b636d164c5c5ffdd371d36135ccf149b9313c3e

Download Submit
memory/2212-91-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2212-16-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2212-1-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2212-159-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2212-2-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2388-13-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2388-15-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2388-12-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2920-88-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2920-90-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads