cycbot | 2d7b3252850324176677221e1aab1cc80ff26b98ed70cea42bc6431aed55eefe

General

Target

JaffaCakes118_607af8de573783ace2166937c4910c10.exe
Size

173KB
MD5

607af8de573783ace2166937c4910c10
SHA1

3290efafb6f4649b6f3dd799003b4b15ce974ae2
SHA256

2d7b3252850324176677221e1aab1cc80ff26b98ed70cea42bc6431aed55eefe
SHA512

2e86c06137fa80feba8418852961ff76643b81b792f97a2e931244125a4bea912455da41ab94a4a16ba4d7066bd93def77bad7e700505b9002cfd2bd8c9f39b3
SSDEEP

3072:d7Nl3Rlyf8n99Qjy5WgRjmsiAmiymPqvlmQNJSimU/t3lk:J3j199KijmsiATPqPNJJ3k

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/2748-7-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2788-15-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2788-76-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2256-80-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2256-79-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2788-205-0x0000000000400000-0x000000000048A000-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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_607af8de573783ace2166937c4910c10.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/2788-2-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2748-5-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2748-7-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2788-15-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2788-76-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2256-80-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2256-79-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2788-205-0x0000000000400000-0x000000000048A000-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_607af8de573783ace2166937c4910c10.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_607af8de573783ace2166937c4910c10.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_607af8de573783ace2166937c4910c10.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2788 wrote to memory of 2748	2788	JaffaCakes118_607af8de573783ace2166937c4910c10.exe	30
PID 2788 wrote to memory of 2748	2788	JaffaCakes118_607af8de573783ace2166937c4910c10.exe	30
PID 2788 wrote to memory of 2748	2788	JaffaCakes118_607af8de573783ace2166937c4910c10.exe	30
PID 2788 wrote to memory of 2748	2788	JaffaCakes118_607af8de573783ace2166937c4910c10.exe	30
PID 2788 wrote to memory of 2256	2788	JaffaCakes118_607af8de573783ace2166937c4910c10.exe	32
PID 2788 wrote to memory of 2256	2788	JaffaCakes118_607af8de573783ace2166937c4910c10.exe	32
PID 2788 wrote to memory of 2256	2788	JaffaCakes118_607af8de573783ace2166937c4910c10.exe	32
PID 2788 wrote to memory of 2256	2788	JaffaCakes118_607af8de573783ace2166937c4910c10.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_607af8de573783ace2166937c4910c10.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_607af8de573783ace2166937c4910c10.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2788
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_607af8de573783ace2166937c4910c10.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_607af8de573783ace2166937c4910c10.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2748
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_607af8de573783ace2166937c4910c10.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_607af8de573783ace2166937c4910c10.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2256

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\D49E.16F

Filesize
1KB

MD5
6ca09f18ff5b593e1d31830e46fe922c

SHA1
a065c3cbc020880caa369bd92e29fb9affa8f6ab

SHA256
7d03c833c8d3cc1ce66ffb8dc7a2b6edcb171628b568c7d09ef1d4620962646e

SHA512
175136916b8be875d6c1cc02136c97687e91c42887bfbeb3312d38829417ea64d892f6b29a3d62049273f5e462ed3201a224889f727697350924452dba1a4d76

Download Submit
C:\Users\Admin\AppData\Roaming\D49E.16F

Filesize
600B

MD5
7ba0326686c6f2e59e158c1ca1b1b3b8

SHA1
9149981816a767ae80a2cf1f798ff18ec5aea909

SHA256
52b1a702b98de2738de2a356d7141c9d40aa93de9bc2bdca0480f8fbf8a3b08e

SHA512
048f6d60254ad1917063d42fc42d394823675453a23012a5845d60b2faeb7d40dfa044cc44310fb189fe660b8f6c8dadbcb71eaf5e4a3594ec70141fdd0e6d09

Download Submit
C:\Users\Admin\AppData\Roaming\D49E.16F

Filesize
996B

MD5
181c968e4a19e4f46bc8802df401cd55

SHA1
f6a9bba4b12031b3219ffd87e83cebf7eaf4894c

SHA256
483b25deffbd13ca822fee471e714c923413f5d522ddfee1f0e0fec16af2f7bc

SHA512
770ae86567abb22ed25fe45bc67de9e981b884f3f45dcfcc72b2343c8f3dc1ab3939ba7253be569751312a257f2ebf12b01dfbb1bdfaefaf2c35812162ee2138

Download Submit
memory/2256-80-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2256-79-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2748-5-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2748-7-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2788-1-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2788-2-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2788-15-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2788-76-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2788-205-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads