cycbot | 243a01f617cc53f24fab0f790f682f04a610e0480599cb843f43dea7283a2d57

General

Target

JaffaCakes118_7f4d4475a7cc4a9e562a0c6c33f7ac8c.exe
Size

176KB
MD5

7f4d4475a7cc4a9e562a0c6c33f7ac8c
SHA1

5224ea303c6de133a34be6dee5bd5aa6288eced6
SHA256

243a01f617cc53f24fab0f790f682f04a610e0480599cb843f43dea7283a2d57
SHA512

1f4ebd1bd564248aec1357033813d0fca20ba7a2411a6ee4387bd148e72be43ad8069185dfcdd83bf56c6c72c684c4acd8778b150c8f767888204db03453b2ef
SSDEEP

3072:Fli4OZS4d94oBQY33xQqniEpIo9yBYg2LXZmyoGR/yoMEa:3iT9PJOqniEpIIyGg2LXgPGRqfj

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/2620-12-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/2044-14-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/2296-85-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/2044-86-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/2044-184-0x0000000000400000-0x000000000048E000-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_7f4d4475a7cc4a9e562a0c6c33f7ac8c.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/2044-1-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/2044-2-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/2620-12-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/2044-14-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/2296-83-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/2296-85-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/2044-86-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/2044-184-0x0000000000400000-0x000000000048E000-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_7f4d4475a7cc4a9e562a0c6c33f7ac8c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_7f4d4475a7cc4a9e562a0c6c33f7ac8c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_7f4d4475a7cc4a9e562a0c6c33f7ac8c.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2044 wrote to memory of 2620	2044	JaffaCakes118_7f4d4475a7cc4a9e562a0c6c33f7ac8c.exe	30
PID 2044 wrote to memory of 2620	2044	JaffaCakes118_7f4d4475a7cc4a9e562a0c6c33f7ac8c.exe	30
PID 2044 wrote to memory of 2620	2044	JaffaCakes118_7f4d4475a7cc4a9e562a0c6c33f7ac8c.exe	30
PID 2044 wrote to memory of 2620	2044	JaffaCakes118_7f4d4475a7cc4a9e562a0c6c33f7ac8c.exe	30
PID 2044 wrote to memory of 2296	2044	JaffaCakes118_7f4d4475a7cc4a9e562a0c6c33f7ac8c.exe	33
PID 2044 wrote to memory of 2296	2044	JaffaCakes118_7f4d4475a7cc4a9e562a0c6c33f7ac8c.exe	33
PID 2044 wrote to memory of 2296	2044	JaffaCakes118_7f4d4475a7cc4a9e562a0c6c33f7ac8c.exe	33
PID 2044 wrote to memory of 2296	2044	JaffaCakes118_7f4d4475a7cc4a9e562a0c6c33f7ac8c.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7f4d4475a7cc4a9e562a0c6c33f7ac8c.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7f4d4475a7cc4a9e562a0c6c33f7ac8c.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2044
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7f4d4475a7cc4a9e562a0c6c33f7ac8c.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7f4d4475a7cc4a9e562a0c6c33f7ac8c.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2620
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7f4d4475a7cc4a9e562a0c6c33f7ac8c.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7f4d4475a7cc4a9e562a0c6c33f7ac8c.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2296

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\867F.26F

Filesize
1KB

MD5
9201acfe85d01b5119667334b8c4d0cc

SHA1
3b5398dcd2ca0e904e1e7f3c370436f8fefc8cd4

SHA256
fe7c4c96b3613f9089fcb64a3cb2b9160bfffe11584cde377d79e28dd6ea10ad

SHA512
153aba716a37aeb9fbfb6d766360972a1352d5f3fb4ec9ecc411f1429d2f9770569dbb9a824d2fd72889c65e9deebb7131b8c872daf92a6dd5772d88fa417405

Download Submit
C:\Users\Admin\AppData\Roaming\867F.26F

Filesize
600B

MD5
1f7e47e716834e4dab86ad08f593f4c7

SHA1
6376b1113f15edc75f4477fa2ac5076daf13d643

SHA256
8147a2a0bf10ff66b3335697fcec64a7c68e9d31ae7c49f3f18f5abb1b30d290

SHA512
d4484c72539dfcf7e96d2119fcee2b820bf97f349d0af7d21d0f149952c095960f642e11ae23bb8c7bb0e892b5148a22c72b3223207ca14e6824d1de2a4a3858

Download Submit
C:\Users\Admin\AppData\Roaming\867F.26F

Filesize
996B

MD5
3da6cc27bf462b3e52ac47a57c8744fd

SHA1
7482ebaf9432e07ca4d12a17c13d1b6e72d3a8c6

SHA256
c8357c99d401b6e8a2c330d6f1fdd42e1245e13d4bc14ae2672da0e7e9cff176

SHA512
dc02e71a8ff2949eebfafa4abdaba4ea3d4db1fc71c5435ea3f2652ed75a9b562bf10769c15f98bc45fc9f9edcd1c2d0fa9f54620013319673c7f200436df403

Download Submit
memory/2044-86-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2044-2-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2044-184-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2044-14-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2044-1-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2296-82-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2296-85-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2296-83-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2620-12-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2620-13-0x0000000000545000-0x000000000055F000-memory.dmp

Filesize
104KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads