cycbot | c7374243439e3c3c8255d16edc4b4bc88d58ce41852b8fc231410d30443093c6

General

Target

JaffaCakes118_63a64fab1dcd6d59778659d433304664.exe
Size

175KB
MD5

63a64fab1dcd6d59778659d433304664
SHA1

e7db1b5fc5cbc531dbc19fc18082a77ef04a8fbe
SHA256

c7374243439e3c3c8255d16edc4b4bc88d58ce41852b8fc231410d30443093c6
SHA512

a5148019a28e1fdec192bfc0c48242a98c86065ef814f9afaba67ba103c1443b633416c2f24d03067665297a60e6702298b94abe440d681119dc7656da25dc88
SSDEEP

3072:eyhMAEU+IpLrMRWZnXGadK6PeYpNkpLPqeKP4Hgtr4LcSu0iSjqUU1:eSCURauGUFUcSu0iSC

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/828-13-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral2/memory/4656-14-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral2/memory/4656-67-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral2/memory/4592-71-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral2/memory/4656-177-0x0000000000400000-0x000000000046E000-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-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_63a64fab1dcd6d59778659d433304664.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4656-2-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/828-13-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/4656-14-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/4656-67-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/4592-69-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/4592-71-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/4656-177-0x0000000000400000-0x000000000046E000-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_63a64fab1dcd6d59778659d433304664.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_63a64fab1dcd6d59778659d433304664.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_63a64fab1dcd6d59778659d433304664.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4656 wrote to memory of 828	4656	JaffaCakes118_63a64fab1dcd6d59778659d433304664.exe	83
PID 4656 wrote to memory of 828	4656	JaffaCakes118_63a64fab1dcd6d59778659d433304664.exe	83
PID 4656 wrote to memory of 828	4656	JaffaCakes118_63a64fab1dcd6d59778659d433304664.exe	83
PID 4656 wrote to memory of 4592	4656	JaffaCakes118_63a64fab1dcd6d59778659d433304664.exe	93
PID 4656 wrote to memory of 4592	4656	JaffaCakes118_63a64fab1dcd6d59778659d433304664.exe	93
PID 4656 wrote to memory of 4592	4656	JaffaCakes118_63a64fab1dcd6d59778659d433304664.exe	93

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_63a64fab1dcd6d59778659d433304664.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_63a64fab1dcd6d59778659d433304664.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4656
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_63a64fab1dcd6d59778659d433304664.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_63a64fab1dcd6d59778659d433304664.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:828
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_63a64fab1dcd6d59778659d433304664.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_63a64fab1dcd6d59778659d433304664.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4592

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

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Downloads

C:\Users\Admin\AppData\Roaming\B061.891

Filesize
1KB

MD5
9d7a7a713d3b6d5b40a76c250e3a0d9e

SHA1
d31443a7c3e52fbaeeb06e89a9a3375a84347973

SHA256
1f84a3c76f66e37c3c082fd88f4a69c779c848c5c7957da7f6573c4fc4238126

SHA512
74d39a1aeb63d675bdd68e5cce3c0b3f9271d92b9aece0bc8f9bca481b374afa58927ab6d2dd4a174509dd112b13e4f5ced275198b43d14f898b301a0bbf216f

Download Submit
C:\Users\Admin\AppData\Roaming\B061.891

Filesize
600B

MD5
ee2c4a8e2046c569fa12d4090e2df8b5

SHA1
d23c20e1135c493a11dcd2ff2b01baadadf55d27

SHA256
c75b54cd5941d17b8319df996af73c3f2c355ffa41432993fa83f1815a26efef

SHA512
7b4297cbe070b81d2c2c28af0c422a883a1fa9ee374fbd3794027801edbe6a751a44261ea076401b15ab81f47004c79b3b55e492fcf37e56b3b2e1948e3de45b

Download Submit
C:\Users\Admin\AppData\Roaming\B061.891

Filesize
996B

MD5
1676dd0c23e1f6ece85eb3db71229b39

SHA1
4d4ce51e6c744430e56694582738a161a98b666d

SHA256
e896dd6b4eb14741add87f8ee5542805c1323818983adecd1b6ececa2a543370

SHA512
b9888d29fc1d2043f5a952830a284fb40dcfe3840758f1a09fed64f808630ee281c206c122a6abc9f7f1f78fed480d29ad3c1eec059917f480e28b485546d09b

Download Submit
memory/828-13-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4592-69-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4592-71-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4656-1-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4656-2-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4656-14-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4656-67-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4656-177-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads