cycbot | 9da7a9400ec94ed272a6a8b32b801f1167ff82d7dae3cae4d6aa60212b3dc689

General

Target

JaffaCakes118_206ffaa99f030ee349bf90acc1541540.exe
Size

200KB
MD5

206ffaa99f030ee349bf90acc1541540
SHA1

fe778710a662c6660459237729733a0aad2cf559
SHA256

9da7a9400ec94ed272a6a8b32b801f1167ff82d7dae3cae4d6aa60212b3dc689
SHA512

1c195292d7e82ec9f38f5f800cfb93af95b2a9a9f9811cb774d85cd6a6a0aaaefc17f019b0d04fe8e86e84b07c814e4986df8d84cb6534212ecb4297cc2fff7c
SSDEEP

3072:PN5H8Hb7WuB9j0gGXSPByTUhSg0z8nx+FvVl+xSM50KWdS5O/Xub9YK1nH4PLs:2bJmrSZkWznxuvL+cmH5Xx1nH

Score

10^/10

cycbot backdoor discovery persistence rat spyware stealer 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
behavioral1/memory/2188-7-0x0000000000400000-0x000000000046C000-memory.dmp	family_cycbot
behavioral1/memory/2188-8-0x0000000000400000-0x000000000046C000-memory.dmp	family_cycbot
behavioral1/memory/2132-17-0x0000000000400000-0x000000000046C000-memory.dmp	family_cycbot
behavioral1/memory/604-78-0x0000000000400000-0x000000000046C000-memory.dmp	family_cycbot
behavioral1/memory/2132-79-0x0000000000400000-0x000000000046C000-memory.dmp	family_cycbot
behavioral1/memory/2132-174-0x0000000000400000-0x000000000046C000-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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_206ffaa99f030ee349bf90acc1541540.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2132-2-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2188-7-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2188-8-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2132-17-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/604-77-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/604-78-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2132-79-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2132-174-0x0000000000400000-0x000000000046C000-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_206ffaa99f030ee349bf90acc1541540.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_206ffaa99f030ee349bf90acc1541540.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_206ffaa99f030ee349bf90acc1541540.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2132 wrote to memory of 2188	2132	JaffaCakes118_206ffaa99f030ee349bf90acc1541540.exe	28
PID 2132 wrote to memory of 2188	2132	JaffaCakes118_206ffaa99f030ee349bf90acc1541540.exe	28
PID 2132 wrote to memory of 2188	2132	JaffaCakes118_206ffaa99f030ee349bf90acc1541540.exe	28
PID 2132 wrote to memory of 2188	2132	JaffaCakes118_206ffaa99f030ee349bf90acc1541540.exe	28
PID 2132 wrote to memory of 604	2132	JaffaCakes118_206ffaa99f030ee349bf90acc1541540.exe	30
PID 2132 wrote to memory of 604	2132	JaffaCakes118_206ffaa99f030ee349bf90acc1541540.exe	30
PID 2132 wrote to memory of 604	2132	JaffaCakes118_206ffaa99f030ee349bf90acc1541540.exe	30
PID 2132 wrote to memory of 604	2132	JaffaCakes118_206ffaa99f030ee349bf90acc1541540.exe	30

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_206ffaa99f030ee349bf90acc1541540.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_206ffaa99f030ee349bf90acc1541540.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2132
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_206ffaa99f030ee349bf90acc1541540.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_206ffaa99f030ee349bf90acc1541540.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2188
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_206ffaa99f030ee349bf90acc1541540.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_206ffaa99f030ee349bf90acc1541540.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:604

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

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\2BA7.4CD

Filesize
1KB

MD5
159c0c9aabd38f69ee4a7ba63ee5912f

SHA1
465346bd0c3cafce50f641f98944b7d8eb4c8d3c

SHA256
36fb4b055fa4615f09b00ca46d36a20ffb457c837c1758f85fc3c2f6fd4891c9

SHA512
deeae8c88b65d44175ea7a9d18ff0fd1549d1a6a2b8656913f21e73c87ac231fe26e8e6608f94dd666d7271f2250433be5038a264f150e0008461fd742917b30

Download Submit
C:\Users\Admin\AppData\Roaming\2BA7.4CD

Filesize
600B

MD5
6ccf060b2cf18b4ef724e94d67ad9e56

SHA1
29536dc92fe1cb63c43a257e2e254bf5da2fe8ae

SHA256
39ba5cfd695f0832e8c61167258a7fea59aa9c40f11b46acb9a2b48d204b439e

SHA512
5f73752a07759b9b3302272cd466be45720d3e19e46ad3517b1de33ee2846997c4485a1a3c74d685cd4a5848b9b49d87798d51772281cf2eef689444230421f8

Download Submit
C:\Users\Admin\AppData\Roaming\2BA7.4CD

Filesize
996B

MD5
732d71c55e5aefdd436bdc9e81310339

SHA1
3148adf94865a4bd0d64c3526d50b0103ad7d575

SHA256
bdd7d9e2835e0ea0a56a630ab1589680b5767c64ab63209b7468e89b176867a9

SHA512
494c47530d47b3d55d0cdbdd44f63abe42e83d27010a6ff7674caf06a25221c5d497b97c12c9088a9b22287aa373e5cece1ad581bee1336c797c888bdac0bfdb

Download Submit
memory/604-78-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/604-77-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2132-79-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2132-17-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2132-1-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2132-2-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2132-174-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2188-8-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2188-7-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2188-5-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads