cycbot | e0dcd3b33e78147ec3c91bb889064ff109c4544280e03c03c95d3118fd9a7601

General

Target

d52e6e52485008f1df333c279c368783_JaffaCakes118.exe
Size

178KB
MD5

d52e6e52485008f1df333c279c368783
SHA1

5e8d9f961d5a598f8cf2d834bbb1218d48b67298
SHA256

e0dcd3b33e78147ec3c91bb889064ff109c4544280e03c03c95d3118fd9a7601
SHA512

593d2385de7dde1e59e69f7d02bb4c2c43f5c62ed30101a3877ca5853650f67b635a3342b2cca06728b017ecbe5d261078474156c58fba78bb8336c1c546f8a5
SSDEEP

3072:115VVdZedtq4IFmlOaoT5iJkwMbL4hUiAZ7s/vcVebz48jMfEwwn3H5hL9wDSqax:LatOF3aoTtohytAbz4/fEww3Hr94Nxo

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/3064-8-0x0000000000400000-0x0000000000485000-memory.dmp	family_cycbot
behavioral1/memory/2412-15-0x0000000000400000-0x0000000000485000-memory.dmp	family_cycbot
behavioral1/memory/2360-87-0x0000000000400000-0x0000000000485000-memory.dmp	family_cycbot
behavioral1/memory/2412-88-0x0000000000400000-0x0000000000485000-memory.dmp	family_cycbot
behavioral1/memory/2412-167-0x0000000000400000-0x0000000000485000-memory.dmp	family_cycbot
behavioral1/memory/2412-202-0x0000000000400000-0x0000000000485000-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-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	d52e6e52485008f1df333c279c368783_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 10 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2412-2-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral1/memory/3064-6-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral1/memory/3064-8-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral1/memory/3064-5-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral1/memory/2412-15-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral1/memory/2360-87-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral1/memory/2360-86-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral1/memory/2412-88-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral1/memory/2412-167-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral1/memory/2412-202-0x0000000000400000-0x0000000000485000-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	d52e6e52485008f1df333c279c368783_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d52e6e52485008f1df333c279c368783_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d52e6e52485008f1df333c279c368783_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2412 wrote to memory of 3064	2412	d52e6e52485008f1df333c279c368783_JaffaCakes118.exe	30
PID 2412 wrote to memory of 3064	2412	d52e6e52485008f1df333c279c368783_JaffaCakes118.exe	30
PID 2412 wrote to memory of 3064	2412	d52e6e52485008f1df333c279c368783_JaffaCakes118.exe	30
PID 2412 wrote to memory of 3064	2412	d52e6e52485008f1df333c279c368783_JaffaCakes118.exe	30
PID 2412 wrote to memory of 2360	2412	d52e6e52485008f1df333c279c368783_JaffaCakes118.exe	33
PID 2412 wrote to memory of 2360	2412	d52e6e52485008f1df333c279c368783_JaffaCakes118.exe	33
PID 2412 wrote to memory of 2360	2412	d52e6e52485008f1df333c279c368783_JaffaCakes118.exe	33
PID 2412 wrote to memory of 2360	2412	d52e6e52485008f1df333c279c368783_JaffaCakes118.exe	33

C:\Users\Admin\AppData\Local\Temp\d52e6e52485008f1df333c279c368783_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d52e6e52485008f1df333c279c368783_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2412
- C:\Users\Admin\AppData\Local\Temp\d52e6e52485008f1df333c279c368783_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\d52e6e52485008f1df333c279c368783_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3064
- C:\Users\Admin\AppData\Local\Temp\d52e6e52485008f1df333c279c368783_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\d52e6e52485008f1df333c279c368783_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2360

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\F8E5.344

Filesize
1KB

MD5
f4543ef2421a20f71561a307197a240a

SHA1
156b9dba7c17319f35babe94a657a6bbc1685752

SHA256
891c2c68ef4ce78c733e96fd0b53af256f49c8c02c0fd6ebf5bc456a09c28182

SHA512
fca15f943997eb060aa2bfefa2a59b9771c65b0a0521624b0c4c41e8ba8a33f2d70ef1f5fe74e067f1c89196a99c50876974df160ebb9a5dfa919879cf569b28

Download Submit
C:\Users\Admin\AppData\Roaming\F8E5.344

Filesize
600B

MD5
360e7214500bd12ac2915ff3347bf820

SHA1
954aca687a878fee5dcabc64e0d3a34e7eab258d

SHA256
ca03db25c79be51950ce95d76676e29f2d8d1c9c75a0eb9bfb8e6a85bc6605ab

SHA512
ebc50a767c7af03c0e6553d224edd8ad331138436f624070db647a1dd42a90a75011830c3ab44eb8fa4739afc4d9699de60f39ce10064232775516f418eb295f

Download Submit
C:\Users\Admin\AppData\Roaming\F8E5.344

Filesize
996B

MD5
78f7db980ebe5efa9ad5c5b82e326943

SHA1
2a16972eefdbe38b0dded2b1725a6017e860f18f

SHA256
d6633a738101f70b4b8ae8e4b07d72e67dc2025baf1c85cd44d3a62dd4fe8392

SHA512
4a684c4564720c22f2c845d0c69a9b7303e09870f9d0155f7f01e21d5c38bb3bf6da1f77ac648bada12ed55d0e70435a8d8a40102fe6d69239c7fdc685831a58

Download Submit
memory/2360-86-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/2360-87-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/2412-88-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/2412-15-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/2412-1-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/2412-2-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/2412-167-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/2412-202-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/3064-5-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/3064-8-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/3064-6-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads