cycbot | 9d0eebe40aeedb7a33d6c93e1370a4b3a0d2c1ff7868b33f87672f4248f2d0c3

General

Target

e3b819b82243a8eb75673a9bb77a2aaa_JaffaCakes118.exe
Size

168KB
MD5

e3b819b82243a8eb75673a9bb77a2aaa
SHA1

b62167d96bdb6437ec3fec596d95f5c7ce91b731
SHA256

9d0eebe40aeedb7a33d6c93e1370a4b3a0d2c1ff7868b33f87672f4248f2d0c3
SHA512

c4f2b5e467205406a0a4fb35f346152ea11972a2ade8f793b47a4e07600775fc6e80804b384d08354ee4cccd14c8cf41d0f639e241beab8ae96006b490592372
SSDEEP

3072:3w0kxfJr+HMTthTtsOkmeD0wVoCin2c2mRO0edWnecPEH/dpQji+:ExV+sT6keD7obLFne+4H/8jN

Score

10^/10

cycbot backdoor discovery persistence rat 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
behavioral2/memory/3116-13-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral2/memory/3116-14-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/3116-79-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/4120-83-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/3116-188-0x0000000000400000-0x0000000000490000-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-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\8D398\\FCE24.exe"	e3b819b82243a8eb75673a9bb77a2aaa_JaffaCakes118.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3116-2-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/3116-13-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral2/memory/3116-14-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/3116-79-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/4120-81-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/4120-83-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/3116-188-0x0000000000400000-0x0000000000490000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4728	4164	WerFault.exe	83

System Location Discovery: System Language Discovery 1 TTPs 1 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	e3b819b82243a8eb75673a9bb77a2aaa_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3116 wrote to memory of 4164	3116	e3b819b82243a8eb75673a9bb77a2aaa_JaffaCakes118.exe	83
PID 3116 wrote to memory of 4164	3116	e3b819b82243a8eb75673a9bb77a2aaa_JaffaCakes118.exe	83
PID 3116 wrote to memory of 4164	3116	e3b819b82243a8eb75673a9bb77a2aaa_JaffaCakes118.exe	83
PID 3116 wrote to memory of 4120	3116	e3b819b82243a8eb75673a9bb77a2aaa_JaffaCakes118.exe	88
PID 3116 wrote to memory of 4120	3116	e3b819b82243a8eb75673a9bb77a2aaa_JaffaCakes118.exe	88
PID 3116 wrote to memory of 4120	3116	e3b819b82243a8eb75673a9bb77a2aaa_JaffaCakes118.exe	88

C:\Users\Admin\AppData\Local\Temp\e3b819b82243a8eb75673a9bb77a2aaa_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e3b819b82243a8eb75673a9bb77a2aaa_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3116
- C:\Users\Admin\AppData\Local\Temp\e3b819b82243a8eb75673a9bb77a2aaa_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\e3b819b82243a8eb75673a9bb77a2aaa_JaffaCakes118.exe startC:\Program Files (x86)\LP\24B8\C25.exe%C:\Program Files (x86)\LP\24B8
  2⤵
  PID:4164
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4164 -s 496
    3⤵
    - Program crash
    PID:4728
- C:\Users\Admin\AppData\Local\Temp\e3b819b82243a8eb75673a9bb77a2aaa_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\e3b819b82243a8eb75673a9bb77a2aaa_JaffaCakes118.exe startC:\Program Files (x86)\98B52\lvvm.exe%C:\Program Files (x86)\98B52
  2⤵
  PID:4120

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4164 -ip 4164
1⤵
PID:1400

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

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\8D398\8B52.D39

Filesize
600B

MD5
ecc62f7367b506b10a0aaac8d4ba45be

SHA1
fef90d1a3632b7061eb1ddf9bab5fb811553c771

SHA256
2f6e3dc5ca4412f9fb9f7500d59dadd290c7fc616f9b10a967cd3c72f05b02d1

SHA512
cf74ec81a44ec8b13f91fdf891472a8098ec3348529e3752745d880ce8609b898c60c4e16356266399199982c485de01d5d50ee23adfdec6e6d8adc6a3030d85

Download Submit
C:\Users\Admin\AppData\Roaming\8D398\8B52.D39

Filesize
1KB

MD5
645a11d3f5eb5d54f50371ec3d6f8bad

SHA1
9790bb5e16e5eeb11751182dabb45af1c613e2f5

SHA256
4b253437f0c52319aebacfcb7e3502138872c41ca8a325f696f410c7ffcb5a46

SHA512
9989e3743687bd5e71704038c155fa8214f30eecbe85ecd97e41951befda66c62974d9494d11413b0b3458144775c52c857a4129a0cabafc577fb0a7c80806fa

Download Submit
C:\Users\Admin\AppData\Roaming\8D398\8B52.D39

Filesize
996B

MD5
c5d1997f02faea1b1956934622f74520

SHA1
13b7e4a4a3db439d71f8e83eab608d229f588fb2

SHA256
122fd44ea43de7d81bab4dce86c0914bb661269a7ef9a18a3f56cff33dfbde2d

SHA512
b140cd9d723180e1b20f2d4b8f8fcc1d8259843ba37a55ea6ecff076f457caaf1717dcf2213ebc3a10c1bfe8943171187ffaeacef62cc2b50ea9e521f8715a11

Download Submit
memory/3116-1-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/3116-2-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/3116-13-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/3116-14-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/3116-79-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/3116-188-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/4120-81-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/4120-83-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/4164-12-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads