cycbot | 64b304dfc73f994fa741060a66dc9ce5dceced68d36f604782006de093dab90a

General

Target

JaffaCakes118_5b15d0b8b84ff551f1bfe01ae13185c2.exe
Size

164KB
MD5

5b15d0b8b84ff551f1bfe01ae13185c2
SHA1

218cd8fb0c65059f0cf14c8e49055120c1798835
SHA256

64b304dfc73f994fa741060a66dc9ce5dceced68d36f604782006de093dab90a
SHA512

18c8a1910c67deff9ca6409c3bc4e1c567afe0d6b49d1058efd5e6ef340c4fffd6778454c63c021f092aa2fbed2b41cc84ed47ffd694e67d9fa91e9cb4fd6f1c
SSDEEP

3072:E2mEMBnspASCSUYSjz6oBiVqbEWXv1LLNSg/X6e1e1yqPihEvfB5/Qxq+NMRwczt:ENBspSSUYDoBiUEqHdX6Sexiwv/gq2Mx

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 7 IoCs

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

resource	yara_rule
behavioral2/memory/1692-14-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/1692-15-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/3952-16-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral2/memory/3952-17-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/3084-128-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/3952-129-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/3952-299-0x0000000000400000-0x0000000000490000-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-1-5-21-4174397412-4125106315-2776226590-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\A51FB\\EA138.exe"	JaffaCakes118_5b15d0b8b84ff551f1bfe01ae13185c2.exe

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3952-3-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/1692-14-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/1692-15-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/3952-16-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral2/memory/3952-17-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/3084-127-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/3084-128-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/3952-129-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/3952-299-0x0000000000400000-0x0000000000490000-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_5b15d0b8b84ff551f1bfe01ae13185c2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_5b15d0b8b84ff551f1bfe01ae13185c2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_5b15d0b8b84ff551f1bfe01ae13185c2.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3952 wrote to memory of 1692	3952	JaffaCakes118_5b15d0b8b84ff551f1bfe01ae13185c2.exe	84
PID 3952 wrote to memory of 1692	3952	JaffaCakes118_5b15d0b8b84ff551f1bfe01ae13185c2.exe	84
PID 3952 wrote to memory of 1692	3952	JaffaCakes118_5b15d0b8b84ff551f1bfe01ae13185c2.exe	84
PID 3952 wrote to memory of 3084	3952	JaffaCakes118_5b15d0b8b84ff551f1bfe01ae13185c2.exe	85
PID 3952 wrote to memory of 3084	3952	JaffaCakes118_5b15d0b8b84ff551f1bfe01ae13185c2.exe	85
PID 3952 wrote to memory of 3084	3952	JaffaCakes118_5b15d0b8b84ff551f1bfe01ae13185c2.exe	85

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5b15d0b8b84ff551f1bfe01ae13185c2.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5b15d0b8b84ff551f1bfe01ae13185c2.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3952
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5b15d0b8b84ff551f1bfe01ae13185c2.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5b15d0b8b84ff551f1bfe01ae13185c2.exe startC:\Program Files (x86)\LP\381A\B81.exe%C:\Program Files (x86)\LP\381A
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1692
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5b15d0b8b84ff551f1bfe01ae13185c2.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5b15d0b8b84ff551f1bfe01ae13185c2.exe startC:\Program Files (x86)\FB86D\lvvm.exe%C:\Program Files (x86)\FB86D
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3084

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\A51FB\B86D.51F

Filesize
996B

MD5
dfea1d4707d3f29da300c90670661d18

SHA1
eebffae0adffdfe840cfa638756009f2e214820b

SHA256
dc14986666bc00f4f32a95ea0c656e1f08dfcbe08d05c43d5cb0d35a5bccf7ed

SHA512
89c96052dd127499d106b5d441fa46a5b9162909e249cfef9ebe7fd9ad19adffa114d37f09cae95063b84ed852a781d0dc8faa91dfb16eb4ae96e486d0573831

Download Submit
C:\Users\Admin\AppData\Roaming\A51FB\B86D.51F

Filesize
600B

MD5
bff3e40e0b70503d642d44df9e8c8b1f

SHA1
fcfe6e18be1a2c459e4f8e16c9eab9aa5f72120c

SHA256
46a50d9686f7f7976f7b04b1b00d677323a2838149349690a3d99ec5905cebc4

SHA512
a6abdfde5e6c7f17c462b9628314e77cebf03f912d2e2ba388683c457e8cb977549a99e5a972eea5298f6bcc4618894d1a3b86cb96567454e78868c553f6da2c

Download Submit
C:\Users\Admin\AppData\Roaming\A51FB\B86D.51F

Filesize
1KB

MD5
f46a4e2fd6bed4290480a7945591392d

SHA1
ca6bcdae27ba0b4a3d7d71f7bc264613cd0697b3

SHA256
9f6b2385c9cecacd8309b4aba0810d99a8387f57dd56b907fc49aff9c09a0228

SHA512
059770d25354f37d1b910d1fd0cf701730a0c01a88cc1cd4fc923a4e133186517479ea34e324999f35a09bc9ec457c2c9a49b1dca9a020d82c7de62265375c5c

Download Submit
memory/1692-14-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/1692-15-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/3084-128-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/3084-127-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/3952-17-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/3952-16-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/3952-0-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/3952-129-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/3952-3-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/3952-2-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/3952-299-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads