cycbot | 6565370e18eb38e28796bb5389e5a3e08f02107d5884eecbe7ec6674b2c8b1ff

General

Target

JaffaCakes118_132e6e3a52d8e906dfc0bf01bf4fc0aa.exe
Size

192KB
MD5

132e6e3a52d8e906dfc0bf01bf4fc0aa
SHA1

a5a0f20cf2774734c76482517f741fdb2f3a1c3a
SHA256

6565370e18eb38e28796bb5389e5a3e08f02107d5884eecbe7ec6674b2c8b1ff
SHA512

7aeab926b6022cd52860042bdf25aa895793ee5e077258356a132b5d186d5622cbcbee185b36fd51546143f3fdd7c352822b5d9f50042717596bb6251798c83a
SSDEEP

6144:jmZM2Oas8lb2B3h4r5omET1gTjqgLoYfv2nRTkVQTy/:aZM+NwhK5ob10LQnRIVQTy

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 8 IoCs

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

resource	yara_rule
behavioral1/memory/2260-8-0x0000000000400000-0x000000000046B000-memory.dmp	family_cycbot
behavioral1/memory/2260-6-0x0000000000400000-0x000000000046B000-memory.dmp	family_cycbot
behavioral1/memory/576-15-0x0000000000400000-0x000000000046B000-memory.dmp	family_cycbot
behavioral1/memory/2404-84-0x0000000000400000-0x000000000046B000-memory.dmp	family_cycbot
behavioral1/memory/2404-86-0x0000000000400000-0x000000000046B000-memory.dmp	family_cycbot
behavioral1/memory/576-87-0x0000000000400000-0x000000000046B000-memory.dmp	family_cycbot
behavioral1/memory/576-172-0x0000000000400000-0x000000000046B000-memory.dmp	family_cycbot
behavioral1/memory/576-201-0x0000000000400000-0x000000000046B000-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_132e6e3a52d8e906dfc0bf01bf4fc0aa.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 11 IoCs

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

upx

resource	yara_rule
behavioral1/memory/576-2-0x0000000000400000-0x000000000046B000-memory.dmp	upx
behavioral1/memory/2260-5-0x0000000000400000-0x000000000046B000-memory.dmp	upx
behavioral1/memory/2260-8-0x0000000000400000-0x000000000046B000-memory.dmp	upx
behavioral1/memory/2260-6-0x0000000000400000-0x000000000046B000-memory.dmp	upx
behavioral1/memory/576-15-0x0000000000400000-0x000000000046B000-memory.dmp	upx
behavioral1/memory/2404-84-0x0000000000400000-0x000000000046B000-memory.dmp	upx
behavioral1/memory/2404-86-0x0000000000400000-0x000000000046B000-memory.dmp	upx
behavioral1/memory/2404-83-0x0000000000400000-0x000000000046B000-memory.dmp	upx
behavioral1/memory/576-87-0x0000000000400000-0x000000000046B000-memory.dmp	upx
behavioral1/memory/576-172-0x0000000000400000-0x000000000046B000-memory.dmp	upx
behavioral1/memory/576-201-0x0000000000400000-0x000000000046B000-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_132e6e3a52d8e906dfc0bf01bf4fc0aa.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_132e6e3a52d8e906dfc0bf01bf4fc0aa.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_132e6e3a52d8e906dfc0bf01bf4fc0aa.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 576 wrote to memory of 2260	576	JaffaCakes118_132e6e3a52d8e906dfc0bf01bf4fc0aa.exe	30
PID 576 wrote to memory of 2260	576	JaffaCakes118_132e6e3a52d8e906dfc0bf01bf4fc0aa.exe	30
PID 576 wrote to memory of 2260	576	JaffaCakes118_132e6e3a52d8e906dfc0bf01bf4fc0aa.exe	30
PID 576 wrote to memory of 2260	576	JaffaCakes118_132e6e3a52d8e906dfc0bf01bf4fc0aa.exe	30
PID 576 wrote to memory of 2404	576	JaffaCakes118_132e6e3a52d8e906dfc0bf01bf4fc0aa.exe	32
PID 576 wrote to memory of 2404	576	JaffaCakes118_132e6e3a52d8e906dfc0bf01bf4fc0aa.exe	32
PID 576 wrote to memory of 2404	576	JaffaCakes118_132e6e3a52d8e906dfc0bf01bf4fc0aa.exe	32
PID 576 wrote to memory of 2404	576	JaffaCakes118_132e6e3a52d8e906dfc0bf01bf4fc0aa.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_132e6e3a52d8e906dfc0bf01bf4fc0aa.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_132e6e3a52d8e906dfc0bf01bf4fc0aa.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:576
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_132e6e3a52d8e906dfc0bf01bf4fc0aa.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_132e6e3a52d8e906dfc0bf01bf4fc0aa.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2260
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_132e6e3a52d8e906dfc0bf01bf4fc0aa.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_132e6e3a52d8e906dfc0bf01bf4fc0aa.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2404

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\8B59.9D6

Filesize
1KB

MD5
2c2bf12ce9b153ed3890d0548985dfc5

SHA1
e4657dabdc1241054ad4bb12dd6df6f30e0bc993

SHA256
7a53be459452682fe20a17a2adf04dbe6d0386c66b7f4f3b0df6c1787c34264c

SHA512
63f57087fc249d7e81a66b6e92d21c21e55f42bedd65f4b87d296a5d59414947f0788d9de1db0f750bfaeb4578247ea36b3edcc674e8550e66730ec3bc6016ba

Download Submit
C:\Users\Admin\AppData\Roaming\8B59.9D6

Filesize
600B

MD5
b6fafb36904041a57f24f8e4b08e52d6

SHA1
d5b4b3ae4109c3c3c046930cfa684611824c7846

SHA256
a7a7cd158f6160441a8fea421dd4c3efec0264a33f8159cb283c036058946a77

SHA512
863b4d9b606e427101528ae2fe793e2f14d8aad81ac35784509b6b6c0550164422dcf4ddfae5df3109707785f4f098e34d3806274e67fd7fc6cbfaee4bb9a22e

Download Submit
C:\Users\Admin\AppData\Roaming\8B59.9D6

Filesize
996B

MD5
9db932c390580ee381b0d2a0f8f74bb9

SHA1
ca3df1b13897c3d8799b9e3edff65c63dcf125d0

SHA256
60bf1959ab94783cf5a480799db928bb2cf6d2a1d8fff3f8694113f2903a49a0

SHA512
313f7657750514c1c6522a769aa5da4e94835df2d3259b3bd59dd6380c398089b5300e94900656400dce3b82dfe03e217c74d8cc78df0881907a562b60635c0f

Download Submit
memory/576-87-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/576-2-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/576-201-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/576-1-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/576-172-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/576-15-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/2260-8-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/2260-6-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/2260-5-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/2404-83-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/2404-86-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/2404-84-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads