cycbot | 23c0f4cd9090b3e3f6b5be673dc8bbab70431f4736cf05f39fcd854527413ae9

General

Target

JaffaCakes118_a8b17aebfcd64862068ee2635acaff35.exe
Size

176KB
MD5

a8b17aebfcd64862068ee2635acaff35
SHA1

88e58562af8f52527c7ad4bdeffb1e138cbc7f7f
SHA256

23c0f4cd9090b3e3f6b5be673dc8bbab70431f4736cf05f39fcd854527413ae9
SHA512

e87c11a5d3b132db23c1da47213318890b2c35857dd789d52309475264f5f98f88f43c91e55d7f5ddd07f9f3c3caf0eb77be8ff047f1a090f4bb729c25f8fe78
SSDEEP

3072:/CsNAKJx/U5K5X81JAhMcQM3+2Kl9Vd/PwmJ35I7EFEes5iPMARCksh2c6JNB5oS:/DAQG5rJgMcvgl/Pwc36OpXR+hF6z7bX

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/1712-15-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/3504-16-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/3504-17-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral2/memory/3304-131-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/3504-132-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/3504-306-0x0000000000400000-0x0000000000491000-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-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\6BEFC\\3CE00.exe"	JaffaCakes118_a8b17aebfcd64862068ee2635acaff35.exe

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3504-2-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/1712-13-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/1712-15-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/3504-16-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/3504-17-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral2/memory/3304-130-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/3304-131-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/3504-132-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/3504-306-0x0000000000400000-0x0000000000491000-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_a8b17aebfcd64862068ee2635acaff35.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_a8b17aebfcd64862068ee2635acaff35.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_a8b17aebfcd64862068ee2635acaff35.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3504 wrote to memory of 1712	3504	JaffaCakes118_a8b17aebfcd64862068ee2635acaff35.exe	85
PID 3504 wrote to memory of 1712	3504	JaffaCakes118_a8b17aebfcd64862068ee2635acaff35.exe	85
PID 3504 wrote to memory of 1712	3504	JaffaCakes118_a8b17aebfcd64862068ee2635acaff35.exe	85
PID 3504 wrote to memory of 3304	3504	JaffaCakes118_a8b17aebfcd64862068ee2635acaff35.exe	90
PID 3504 wrote to memory of 3304	3504	JaffaCakes118_a8b17aebfcd64862068ee2635acaff35.exe	90
PID 3504 wrote to memory of 3304	3504	JaffaCakes118_a8b17aebfcd64862068ee2635acaff35.exe	90

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a8b17aebfcd64862068ee2635acaff35.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a8b17aebfcd64862068ee2635acaff35.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3504
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a8b17aebfcd64862068ee2635acaff35.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a8b17aebfcd64862068ee2635acaff35.exe startC:\Program Files (x86)\LP\00B6\B2F.exe%C:\Program Files (x86)\LP\00B6
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1712
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a8b17aebfcd64862068ee2635acaff35.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a8b17aebfcd64862068ee2635acaff35.exe startC:\Program Files (x86)\FCEDB\lvvm.exe%C:\Program Files (x86)\FCEDB
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3304

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\6BEFC\CEDB.BEF

Filesize
996B

MD5
1e1e4ae5288ac4029e32d340a6bcea05

SHA1
ec428db91b9714c2f2b8fc8e71b0c5a2d788e069

SHA256
665087ef657a818794d566fb80055dd00afa49a1b58b4d2fb9601e950b478f4b

SHA512
74fd183b38d214fa3787589a0d8d9746abf4a5ce393f316270c904ca7c775a72f629866215af5e76341ba0f1a39922a456ffd945b45a7e6e1ed0fdeaae2de0d7

Download Submit
C:\Users\Admin\AppData\Roaming\6BEFC\CEDB.BEF

Filesize
600B

MD5
b4d86c4525ca49e3560fc62af3f2e2fc

SHA1
ddc834b90bc393649cdb716c3d240298954984a1

SHA256
3cc1c44e2134a5b51c1fdbfdb67027a42916d201b6e19e195f8725d0b62af76d

SHA512
9405e67ec83818c6c0d6b7f245f4e451fb19d89d8bb5aa75f7034df4bd3e9c53e09f7c23c29c7e4a4318750ff34fecb5f0873543c19c096ec9ee69f032ef92c9

Download Submit
C:\Users\Admin\AppData\Roaming\6BEFC\CEDB.BEF

Filesize
1KB

MD5
85ce4a3e7a91998eebb3c584aeb083bb

SHA1
584a4f7fbe6514464e025096fff6600558ce8ee8

SHA256
3361dc2e477c0ea351b34e6c1d66039bf3e60cc99d6dc84ed8bd1e59c85c2a4a

SHA512
693d6e902b7243b0d353c6af96a84752590e70bd2da86526af978a14e4c304ba396f8ef488d44bac1a586309743ceee990ca68bce2b25fbbce104ec40739e942

Download Submit
memory/1712-12-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1712-13-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1712-15-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3304-131-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3304-130-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3504-17-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/3504-1-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/3504-132-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3504-16-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3504-2-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3504-306-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads