cycbot | 546ee55cffe8d0fb0c0e606fe8de9cb49a894b692a50e7daf6858318f5141db3

General

Target

JaffaCakes118_781b3f6a751cf14c00a2a4b5a9e6ff0b.exe
Size

170KB
MD5

781b3f6a751cf14c00a2a4b5a9e6ff0b
SHA1

24cf86d2faf39fa15abc8eb936b3b8ac85bc6816
SHA256

546ee55cffe8d0fb0c0e606fe8de9cb49a894b692a50e7daf6858318f5141db3
SHA512

4c7b3b9d2cdeec7cce61b42d66aa5463d565c547915bc5be907da63c6f4a5087ef02991f0ecc29a661a582e1208597e1a170c8c98dcec6fe7ad23220addad461
SSDEEP

3072:thYT1w9DMflW7lf3Hqtf6XO4Ya3f1uhlFIEaDetyHkFNHrhU4uB:thw1SDMNW5f3zLv1UIE9y0VTu

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/1908-14-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/1912-15-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/1912-16-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/2476-82-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/1912-83-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/1912-181-0x0000000000400000-0x0000000000491000-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\\ED551\\AB23D.exe"	JaffaCakes118_781b3f6a751cf14c00a2a4b5a9e6ff0b.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 9 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1912-2-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1908-13-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1908-14-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1912-15-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1912-16-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/2476-81-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2476-82-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1912-83-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1912-181-0x0000000000400000-0x0000000000491000-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_781b3f6a751cf14c00a2a4b5a9e6ff0b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_781b3f6a751cf14c00a2a4b5a9e6ff0b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_781b3f6a751cf14c00a2a4b5a9e6ff0b.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1912 wrote to memory of 1908	1912	JaffaCakes118_781b3f6a751cf14c00a2a4b5a9e6ff0b.exe	28
PID 1912 wrote to memory of 1908	1912	JaffaCakes118_781b3f6a751cf14c00a2a4b5a9e6ff0b.exe	28
PID 1912 wrote to memory of 1908	1912	JaffaCakes118_781b3f6a751cf14c00a2a4b5a9e6ff0b.exe	28
PID 1912 wrote to memory of 1908	1912	JaffaCakes118_781b3f6a751cf14c00a2a4b5a9e6ff0b.exe	28
PID 1912 wrote to memory of 2476	1912	JaffaCakes118_781b3f6a751cf14c00a2a4b5a9e6ff0b.exe	32
PID 1912 wrote to memory of 2476	1912	JaffaCakes118_781b3f6a751cf14c00a2a4b5a9e6ff0b.exe	32
PID 1912 wrote to memory of 2476	1912	JaffaCakes118_781b3f6a751cf14c00a2a4b5a9e6ff0b.exe	32
PID 1912 wrote to memory of 2476	1912	JaffaCakes118_781b3f6a751cf14c00a2a4b5a9e6ff0b.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_781b3f6a751cf14c00a2a4b5a9e6ff0b.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_781b3f6a751cf14c00a2a4b5a9e6ff0b.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1912
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_781b3f6a751cf14c00a2a4b5a9e6ff0b.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_781b3f6a751cf14c00a2a4b5a9e6ff0b.exe startC:\Program Files (x86)\LP\3DDE\828.exe%C:\Program Files (x86)\LP\3DDE
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1908
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_781b3f6a751cf14c00a2a4b5a9e6ff0b.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_781b3f6a751cf14c00a2a4b5a9e6ff0b.exe startC:\Program Files (x86)\51AD0\lvvm.exe%C:\Program Files (x86)\51AD0
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2476

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\ED551\1AD0.D55

Filesize
1KB

MD5
22a1ff5e50eb0f9252d8c0f23d64453c

SHA1
24d7fe323011a219cc7a3965e97030bd9eb60f10

SHA256
f9ddd0524f37c0dbb4a0010358c557df5f1afd9bc5fd7a26cf435ebe9974cca6

SHA512
eb5d1b7cdbcd66f3dbe5b9070fdf0bfa8e1acdb0654541f0d05c454198cb4719ef08d4500a6a55675bf7447fe452b4f05a67119a0888d8703469e81f7c1e14a1

Download Submit
C:\Users\Admin\AppData\Roaming\ED551\1AD0.D55

Filesize
600B

MD5
5ab0ca54d595fa95bb06606563224fa3

SHA1
e1b090249c8b29fa5624ca0970c7417aa7c7f0c1

SHA256
10a8c1c60ac9ec2b8fe94d87ab6d0102664292d653adb5ce62d45627f6e85931

SHA512
99c8629e059f1e6ebce86099ae8d61152734e840020f10768d15a3aa0f7a92d1e71b441453d9359003809e92aff15e6a300105a4fe99929900391d83b67ebed5

Download Submit
C:\Users\Admin\AppData\Roaming\ED551\1AD0.D55

Filesize
996B

MD5
9dd11b795d922a0b5b8fa30ec2b6a2dc

SHA1
59164e2b1eb11a41efb6fca259bb6360945b90e8

SHA256
0a9d9495c2fbe8cb022f53c9b5f6010e9a7a7de0a57068432149a2621c28e8b6

SHA512
50ea907e12e95be833b5fd65e8ca84add64803ba44d0e8b203d93380aada0df700aa0798b5d70ad1c24a0c9e848a8febb2656af1e1b64fc0ad70ea6a29df126d

Download Submit
memory/1908-13-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1908-12-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1908-14-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1912-16-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/1912-1-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/1912-83-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1912-15-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1912-2-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1912-181-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2476-81-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2476-82-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads