cycbot | 1796475e197aacc87e0a42df8a1d58340fc8f43105f4065cab277ea3502b6af5

General

Target

JaffaCakes118_4f78e6907967c6f858a1d44ab0c122bd.exe
Size

163KB
MD5

4f78e6907967c6f858a1d44ab0c122bd
SHA1

54e83b153865abae6b8210ab43843eb8f2928aee
SHA256

1796475e197aacc87e0a42df8a1d58340fc8f43105f4065cab277ea3502b6af5
SHA512

f1f43199cc776a1e0571170683ed62162a20712c7c36a28298b086a7d38871b43a9add5bc067318ad2a0284a7f2400b17012f1f5b1be9cc6fca6c4f0acb4af89
SSDEEP

3072:sG4dtwkbMeTx61UPk/jPU5Cycjw2fmafkex8enPAZs7MYaYECBN8OPw3q7F+sWiU:IwkEx/js5SwqmGke9AZMaKN8OwqjJaxb

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 6 IoCs

Cycbot is a backdoor and trojan written in C++.

resource	yara_rule
behavioral2/memory/4020-15-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/3184-16-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral2/memory/3184-17-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/3184-87-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/3556-90-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/3184-189-0x0000000000400000-0x0000000000491000-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-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\B397E\\9217E.exe"	JaffaCakes118_4f78e6907967c6f858a1d44ab0c122bd.exe

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3184-2-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4020-12-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4020-13-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4020-15-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/3184-16-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral2/memory/3184-17-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/3184-87-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/3556-90-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/3184-189-0x0000000000400000-0x0000000000491000-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_4f78e6907967c6f858a1d44ab0c122bd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4f78e6907967c6f858a1d44ab0c122bd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4f78e6907967c6f858a1d44ab0c122bd.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3184 wrote to memory of 4020	3184	JaffaCakes118_4f78e6907967c6f858a1d44ab0c122bd.exe	83
PID 3184 wrote to memory of 4020	3184	JaffaCakes118_4f78e6907967c6f858a1d44ab0c122bd.exe	83
PID 3184 wrote to memory of 4020	3184	JaffaCakes118_4f78e6907967c6f858a1d44ab0c122bd.exe	83
PID 3184 wrote to memory of 3556	3184	JaffaCakes118_4f78e6907967c6f858a1d44ab0c122bd.exe	96
PID 3184 wrote to memory of 3556	3184	JaffaCakes118_4f78e6907967c6f858a1d44ab0c122bd.exe	96
PID 3184 wrote to memory of 3556	3184	JaffaCakes118_4f78e6907967c6f858a1d44ab0c122bd.exe	96

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4f78e6907967c6f858a1d44ab0c122bd.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4f78e6907967c6f858a1d44ab0c122bd.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3184
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4f78e6907967c6f858a1d44ab0c122bd.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4f78e6907967c6f858a1d44ab0c122bd.exe startC:\Program Files (x86)\LP\7E0B\CA3.exe%C:\Program Files (x86)\LP\7E0B
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4020
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4f78e6907967c6f858a1d44ab0c122bd.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4f78e6907967c6f858a1d44ab0c122bd.exe startC:\Program Files (x86)\7EAAD\lvvm.exe%C:\Program Files (x86)\7EAAD
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3556

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\B397E\EAAD.397

Filesize
1KB

MD5
7c6c96dea3ab1cd443b359a568a89630

SHA1
0121a48e49ecc4363608da53bea44cae429629f1

SHA256
55cf1648a2aad6b15f8c2295549b16ce9c6c17258d79c5167c541948f5d48fb8

SHA512
78f8a39193a0de1259b095a15d49fb0e7da9b2ef05d23b3b0e788c5824e8e1cbe7994cb6ec64e1669b46160aa40abc66a66ddff0c71711d9708574313c96e8f1

Download Submit
C:\Users\Admin\AppData\Roaming\B397E\EAAD.397

Filesize
600B

MD5
ff80362667f459c6962364044afc129c

SHA1
2c270c4e51f43e66aaf3b0b3d2d2ccef03b70b4c

SHA256
ff93cf294d6b8c299938b057f9c37dbccffcd76ec4fd1f1ef7f7a3b1d64d9754

SHA512
61ffa2cd7a7094a69f8e1d09463b70e9391f9d13b726a729df0d27dfb4cf38ba24a85c21dee75f43a56639554d2a5ec8434d705c8584b4e4694b14202130bd23

Download Submit
C:\Users\Admin\AppData\Roaming\B397E\EAAD.397

Filesize
996B

MD5
f77ee67c91ac1f564fc1fbb38d5e8305

SHA1
c0ed1373bcc0abb7cfbdd7105c8dfdab6f82a453

SHA256
c408948d4044fbcf7eb05b25a652e8aad4f384eaad846ca700ab0f85c377f660

SHA512
a26741d5058e35b429212e2d3904fea902483a5fff6cc069212a5d560796752b101eee80ac3d3d472eec3d3c2bdb783fb76dbd658704c69e450e21954b24e4af

Download Submit
memory/3184-1-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/3184-2-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3184-189-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3184-16-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/3184-17-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3184-87-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3556-90-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4020-15-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4020-13-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4020-12-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads