cycbot | 66c501de1e311ae66ba47de335de4e16a8e3f858076498a8e3682853647dfc3f

General

Target

JaffaCakes118_17e28a792f2fea781c5038ed34ed2c05.exe
Size

165KB
MD5

17e28a792f2fea781c5038ed34ed2c05
SHA1

bc2156d0821b3b1deb963aaa7443331781cd24a4
SHA256

66c501de1e311ae66ba47de335de4e16a8e3f858076498a8e3682853647dfc3f
SHA512

ac7f4aad1eb07479a62950f5e520cbd1c1ba08340fc24a7420f0eaa61010ab3fdb706bc2adfbb6782edc25c74c3cd5959b71e52f6adc07f4398ec17999dde9a8
SSDEEP

3072:7PlW+AhhuDcFQjXtMPXoJ6Q6QLl73qKk3cY:blWRuDcWX+PX7Il2KkMY

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/3440-16-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/3960-17-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/3960-18-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral2/memory/2040-112-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/3960-113-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/3960-263-0x0000000000400000-0x0000000000490000-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-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\2D52E\\9E42C.exe"	JaffaCakes118_17e28a792f2fea781c5038ed34ed2c05.exe

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3960-3-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/3440-15-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/3440-14-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/3440-16-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/3960-17-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/3960-18-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral2/memory/2040-112-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/3960-113-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/3960-263-0x0000000000400000-0x0000000000490000-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_17e28a792f2fea781c5038ed34ed2c05.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_17e28a792f2fea781c5038ed34ed2c05.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_17e28a792f2fea781c5038ed34ed2c05.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3960 wrote to memory of 3440	3960	JaffaCakes118_17e28a792f2fea781c5038ed34ed2c05.exe	85
PID 3960 wrote to memory of 3440	3960	JaffaCakes118_17e28a792f2fea781c5038ed34ed2c05.exe	85
PID 3960 wrote to memory of 3440	3960	JaffaCakes118_17e28a792f2fea781c5038ed34ed2c05.exe	85
PID 3960 wrote to memory of 2040	3960	JaffaCakes118_17e28a792f2fea781c5038ed34ed2c05.exe	100
PID 3960 wrote to memory of 2040	3960	JaffaCakes118_17e28a792f2fea781c5038ed34ed2c05.exe	100
PID 3960 wrote to memory of 2040	3960	JaffaCakes118_17e28a792f2fea781c5038ed34ed2c05.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_17e28a792f2fea781c5038ed34ed2c05.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_17e28a792f2fea781c5038ed34ed2c05.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3960
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_17e28a792f2fea781c5038ed34ed2c05.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_17e28a792f2fea781c5038ed34ed2c05.exe startC:\Program Files (x86)\LP\2CC2\F46.exe%C:\Program Files (x86)\LP\2CC2
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3440
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_17e28a792f2fea781c5038ed34ed2c05.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_17e28a792f2fea781c5038ed34ed2c05.exe startC:\Program Files (x86)\2EED7\lvvm.exe%C:\Program Files (x86)\2EED7
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2040

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\2D52E\EED7.D52

Filesize
996B

MD5
769fff713e43117efb48e16d04f365e1

SHA1
bfd8f47bb05fc0d29894b4f486a8af5801639525

SHA256
0916d83ad97233305a3e9d77a70ce442fc92e721581e1c789af61b620e4a1689

SHA512
73ebe0e77bd8a25a4c4bb2358db835000f3f051c63025a27b8cb5a0cb074285ca91974b65774bd9d0bfafa7df220d676459bfedbf030b4f25c60aa68a3b27bec

Download Submit
C:\Users\Admin\AppData\Roaming\2D52E\EED7.D52

Filesize
600B

MD5
5a31d794b082b258e75bd73a3b21b9b9

SHA1
72d01463c35ebfd0a9b7e8051087f1ffe24d4907

SHA256
c7d08ce5e86365a7b7ff4fca942ea405ab0f602e3c816f5a910c0072d3f0d3ea

SHA512
33d99bb61dbdab14aea2f00c83d3a7a1df4d826add783bf89805dea1f7272d1a666aecf1b73abda7eb83086ca155e6cf14519b18195c8c47db733fb801372faf

Download Submit
C:\Users\Admin\AppData\Roaming\2D52E\EED7.D52

Filesize
1KB

MD5
e76868e54b523dd17ecf40bca74a8714

SHA1
699c97802703cdebc4a2463aafab0a67607da3f9

SHA256
68f35024d0a3cc4ee4e27bc7d37bbca2bfe9bf8edb552ca4e1d30ed3a79263c7

SHA512
73a1b2c205cc86dfdbe952549f09823aa4a36615a509e51b59fda01ff060d63f7bdb97710b5635160da0dfa1d673be8cd92eb09bb940b6928e73e62aeddd3de1

Download Submit
memory/2040-112-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/3440-15-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/3440-16-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/3440-14-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/3960-17-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/3960-18-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/3960-0-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/3960-113-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/3960-3-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/3960-2-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/3960-263-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads