cycbot | 8bd403adc225ef5512a309e52822b37c6dfad2905c327da490ab409fd4aea738

General

Target

d35a7352e12a25e36b718b07d2a74d9c_JaffaCakes118.exe
Size

174KB
MD5

d35a7352e12a25e36b718b07d2a74d9c
SHA1

0ea1212e27715dfa2adaac3679622fc8f00a8769
SHA256

8bd403adc225ef5512a309e52822b37c6dfad2905c327da490ab409fd4aea738
SHA512

717768020a4e09868324483ea9bf71b4a68cd87384a2ac4cbf09edabe61c563d7d6dda299c2963eedd75dd6fa39462880fb4b335a91c0aca0b3b25edfea46308
SSDEEP

3072:j3QTXjUhMXiYETuL6Iqp8n3Jgrz7dz8QeZII:sY65dqrVoQ

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/2880-15-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/2340-16-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/2548-93-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/2340-94-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/2340-162-0x0000000000400000-0x000000000048D000-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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	d35a7352e12a25e36b718b07d2a74d9c_JaffaCakes118.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/2340-2-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2880-12-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2880-15-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2880-13-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2340-16-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2548-91-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2548-93-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2340-94-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/2340-162-0x0000000000400000-0x000000000048D000-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	d35a7352e12a25e36b718b07d2a74d9c_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d35a7352e12a25e36b718b07d2a74d9c_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d35a7352e12a25e36b718b07d2a74d9c_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2340 wrote to memory of 2880	2340	d35a7352e12a25e36b718b07d2a74d9c_JaffaCakes118.exe	28
PID 2340 wrote to memory of 2880	2340	d35a7352e12a25e36b718b07d2a74d9c_JaffaCakes118.exe	28
PID 2340 wrote to memory of 2880	2340	d35a7352e12a25e36b718b07d2a74d9c_JaffaCakes118.exe	28
PID 2340 wrote to memory of 2880	2340	d35a7352e12a25e36b718b07d2a74d9c_JaffaCakes118.exe	28
PID 2340 wrote to memory of 2548	2340	d35a7352e12a25e36b718b07d2a74d9c_JaffaCakes118.exe	30
PID 2340 wrote to memory of 2548	2340	d35a7352e12a25e36b718b07d2a74d9c_JaffaCakes118.exe	30
PID 2340 wrote to memory of 2548	2340	d35a7352e12a25e36b718b07d2a74d9c_JaffaCakes118.exe	30
PID 2340 wrote to memory of 2548	2340	d35a7352e12a25e36b718b07d2a74d9c_JaffaCakes118.exe	30

C:\Users\Admin\AppData\Local\Temp\d35a7352e12a25e36b718b07d2a74d9c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d35a7352e12a25e36b718b07d2a74d9c_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2340
- C:\Users\Admin\AppData\Local\Temp\d35a7352e12a25e36b718b07d2a74d9c_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\d35a7352e12a25e36b718b07d2a74d9c_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2880
- C:\Users\Admin\AppData\Local\Temp\d35a7352e12a25e36b718b07d2a74d9c_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\d35a7352e12a25e36b718b07d2a74d9c_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2548

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\D95C.8BA

Filesize
1KB

MD5
a32a7238b2ad4d836199d5777cb86ee0

SHA1
fc5e394082b2c02241dd699598a70b7fcc0c0901

SHA256
4d479372ee6a6d3dfc6de109e023edf0c09af08dc0e4266704da2dd5f44dfb0a

SHA512
bc03d668e4d7aa6cc54be125368f17d616f48b83ffcaaacf60530aa59c7d3c1b3319e8ad5a8c665ad5659bd9ac2fd3af92286c30b02763ad21ee252a73c57b3b

Download Submit
C:\Users\Admin\AppData\Roaming\D95C.8BA

Filesize
600B

MD5
bdc966021e6078574e2278707c77e470

SHA1
3dc82e33c3403246abb75f4891c284edf22b27ac

SHA256
bf0dacbacbfd03e1a06cbea07c8d06434de682ea20b2c4a83a9362a1c21c4dcb

SHA512
09c561e08e863f5aaf7c9bd1ce1108a01c5ce609923d84284d9c1d6ae1cbced369c3e8dd44986c77639da1e53829c9e2259edfdbee09f526000f84a3ef2d444c

Download Submit
C:\Users\Admin\AppData\Roaming\D95C.8BA

Filesize
996B

MD5
9539ccc77978829491e8030ae51a7816

SHA1
b8aa036d4caab04fc34b2fcc512fa218c446544d

SHA256
23ff45bd78e3fa462788671219261106e9eb0a029225a7ae55f7c29725065a30

SHA512
1e5c20b50afc14b6611261513ab987d89fe548fea065da2ca6eeeef6ccc3f788c4004912e48e45b074c1cf9ffce740020cec80e2f8a55612a5761e7723f427e5

Download Submit
memory/2340-94-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2340-16-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2340-1-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2340-162-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2340-2-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2548-91-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2548-93-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2880-13-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2880-15-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2880-12-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads