cycbot | eefdc751b3ca1dd5e2771a5d3e847efd8ec81dbf05447c927ffad071c95c88aa

General

Target

JaffaCakes118_66f0e5a421e308d1bad945eeb469b34d.exe
Size

176KB
MD5

66f0e5a421e308d1bad945eeb469b34d
SHA1

a44f31b439db3588affcba9a78ca1e36b93a3a32
SHA256

eefdc751b3ca1dd5e2771a5d3e847efd8ec81dbf05447c927ffad071c95c88aa
SHA512

5e14ffd7520560ca5f15b788bb48f032a3307743fca25ab53dfb42316d14186817c03072cc74e992bfc9f16ad9b1613d755419b80a9d9ea6f9b1fc636d84efdf
SSDEEP

3072:y57GJO4OYlxry+oy3yuGAWquYqfUwdQoPW4iaq+1t+xaSNL6kq2:oKJO49lxryGCqyinVxaSJ

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 7 IoCs

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

resource	yara_rule
behavioral1/memory/2804-14-0x0000000000400000-0x000000000046C000-memory.dmp	family_cycbot
behavioral1/memory/2804-13-0x0000000000400000-0x000000000046C000-memory.dmp	family_cycbot
behavioral1/memory/2792-15-0x0000000000400000-0x000000000046C000-memory.dmp	family_cycbot
behavioral1/memory/2808-81-0x0000000000400000-0x000000000046C000-memory.dmp	family_cycbot
behavioral1/memory/2808-82-0x0000000000400000-0x000000000046C000-memory.dmp	family_cycbot
behavioral1/memory/2792-83-0x0000000000400000-0x000000000046C000-memory.dmp	family_cycbot
behavioral1/memory/2792-194-0x0000000000400000-0x000000000046C000-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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_66f0e5a421e308d1bad945eeb469b34d.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 9 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2804-14-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2804-13-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2792-2-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2792-15-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2808-81-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2808-80-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2808-82-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2792-83-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2792-194-0x0000000000400000-0x000000000046C000-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_66f0e5a421e308d1bad945eeb469b34d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_66f0e5a421e308d1bad945eeb469b34d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_66f0e5a421e308d1bad945eeb469b34d.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2792 wrote to memory of 2804	2792	JaffaCakes118_66f0e5a421e308d1bad945eeb469b34d.exe	29
PID 2792 wrote to memory of 2804	2792	JaffaCakes118_66f0e5a421e308d1bad945eeb469b34d.exe	29
PID 2792 wrote to memory of 2804	2792	JaffaCakes118_66f0e5a421e308d1bad945eeb469b34d.exe	29
PID 2792 wrote to memory of 2804	2792	JaffaCakes118_66f0e5a421e308d1bad945eeb469b34d.exe	29
PID 2792 wrote to memory of 2808	2792	JaffaCakes118_66f0e5a421e308d1bad945eeb469b34d.exe	31
PID 2792 wrote to memory of 2808	2792	JaffaCakes118_66f0e5a421e308d1bad945eeb469b34d.exe	31
PID 2792 wrote to memory of 2808	2792	JaffaCakes118_66f0e5a421e308d1bad945eeb469b34d.exe	31
PID 2792 wrote to memory of 2808	2792	JaffaCakes118_66f0e5a421e308d1bad945eeb469b34d.exe	31

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_66f0e5a421e308d1bad945eeb469b34d.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_66f0e5a421e308d1bad945eeb469b34d.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2792
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_66f0e5a421e308d1bad945eeb469b34d.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_66f0e5a421e308d1bad945eeb469b34d.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2804
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_66f0e5a421e308d1bad945eeb469b34d.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_66f0e5a421e308d1bad945eeb469b34d.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2808

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\8579.897

Filesize
1KB

MD5
ca4af0c4235b76fa44f393f4c13df638

SHA1
4288b81802bc1e03ea1ea35ca3f165e9c44b5540

SHA256
43f4c15d3aa805ab79f05d0196b1fc6a27b3f87aff7d52993b22d4c32832be6c

SHA512
e42b2e32efd23766ec51c31db109a8893db3d9d7cec3b039e7ed7407166cd1720717e51f33ba31256188f5cf9e45513f7b8f38257b9b56fad103056d4506cd68

Download Submit
C:\Users\Admin\AppData\Roaming\8579.897

Filesize
600B

MD5
d83f77596ecf77e2882f85271c6d5e1c

SHA1
35883d6a570634e62b9946ec22a5454aba007f2e

SHA256
a6850dc5684762c3d1ad267bde8350d49e64340b29effff0c7fd0d2beefc9025

SHA512
71818799756ae8672728b2ac18ac551d409db354f9ff38a9ca84045da309250ace50e39892f40e2a12b161883158dfb9d1088df95e47be2c4b2c8898a0e0a873

Download Submit
C:\Users\Admin\AppData\Roaming\8579.897

Filesize
996B

MD5
461b4ca9e69b061a7401329b7c23107a

SHA1
5f6c3314db14db899470205c28091ac6d1754429

SHA256
feaa4b79b8863364382a09463687b6ea35305a1b2013544ad33e4a9c95c2ae20

SHA512
ea3b82e965b625a2661eeb8ae13c3e9caaf4342b5857ac424e024ebe5cbf6a1855d423cd899b1dc72b86c7c4a92f38a05cb1ee42f0e8f26a5d9be9a99b3eae28

Download Submit
memory/2792-83-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2792-15-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2792-1-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2792-2-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2792-194-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2804-14-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2804-13-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2808-81-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2808-80-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2808-82-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads