cycbot | 4e1f2b6a504b421ec6cb4c98a105248643dff527aee26b39e3cb8279eb8a6df3

General

Target

JaffaCakes118_1a9b7f68c4b4232ac15708b289ae8135.exe
Size

178KB
MD5

1a9b7f68c4b4232ac15708b289ae8135
SHA1

9a8f1da1a4d4a69153cf1a4120802b66e038dd2c
SHA256

4e1f2b6a504b421ec6cb4c98a105248643dff527aee26b39e3cb8279eb8a6df3
SHA512

9eb990715f049a8bd759e63e99dfec2eadf735ca6a344608cf06017444b44f75859ae68b1152405822507c7118db646bf052f8b235202ec2af6aacc5867a7e74
SSDEEP

3072:HF8h3rEGnHZfg15j6o7ouFD5txqo5rjuv+Q3ZWTZHv7nhR1cJCd8ahjau9M17mjw:HF8rVH1C52o7lFAo5OGQ0TZusd82/9M7

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 5 IoCs

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

resource	yara_rule
behavioral1/memory/2852-7-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/1996-15-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/1628-79-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/1996-80-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/1996-179-0x0000000000400000-0x000000000046E000-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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_1a9b7f68c4b4232ac15708b289ae8135.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/1996-2-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2852-5-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2852-7-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/1996-15-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/1628-79-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/1628-78-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/1996-80-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/1996-179-0x0000000000400000-0x000000000046E000-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_1a9b7f68c4b4232ac15708b289ae8135.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_1a9b7f68c4b4232ac15708b289ae8135.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_1a9b7f68c4b4232ac15708b289ae8135.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1996 wrote to memory of 2852	1996	JaffaCakes118_1a9b7f68c4b4232ac15708b289ae8135.exe	29
PID 1996 wrote to memory of 2852	1996	JaffaCakes118_1a9b7f68c4b4232ac15708b289ae8135.exe	29
PID 1996 wrote to memory of 2852	1996	JaffaCakes118_1a9b7f68c4b4232ac15708b289ae8135.exe	29
PID 1996 wrote to memory of 2852	1996	JaffaCakes118_1a9b7f68c4b4232ac15708b289ae8135.exe	29
PID 1996 wrote to memory of 1628	1996	JaffaCakes118_1a9b7f68c4b4232ac15708b289ae8135.exe	31
PID 1996 wrote to memory of 1628	1996	JaffaCakes118_1a9b7f68c4b4232ac15708b289ae8135.exe	31
PID 1996 wrote to memory of 1628	1996	JaffaCakes118_1a9b7f68c4b4232ac15708b289ae8135.exe	31
PID 1996 wrote to memory of 1628	1996	JaffaCakes118_1a9b7f68c4b4232ac15708b289ae8135.exe	31

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1a9b7f68c4b4232ac15708b289ae8135.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1a9b7f68c4b4232ac15708b289ae8135.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1996
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1a9b7f68c4b4232ac15708b289ae8135.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1a9b7f68c4b4232ac15708b289ae8135.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2852
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1a9b7f68c4b4232ac15708b289ae8135.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1a9b7f68c4b4232ac15708b289ae8135.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1628

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\FFF6.2F2

Filesize
1KB

MD5
3c4b314cd566c450e867c6aba61b012c

SHA1
523ed85e96d3880e83367f4c93ac7ce26aa9b241

SHA256
3df1958bcd08200637da8afb75d7030099f373a98f4528448d4d29670ec0946c

SHA512
c1de814aace97164a1df85ebbc91bf2d656726a5a1e227b95dca116f0c6280db677e5395264f56502ae0c4bea67bb6ec7add3f888e082d527fc4cf0c85c66d88

Download Submit
C:\Users\Admin\AppData\Roaming\FFF6.2F2

Filesize
600B

MD5
f94bbe41a0341b0a96bf3e8ac86c7873

SHA1
050432819405132ff7b4c1c342ac1521d8d25db2

SHA256
dcca9590ca2e00d09cb1a48b0cb1d545d8a52be5059c774ff2c1786fa916d84b

SHA512
e20aca338ad817ef6fe7916de9c6618023a7091edfd7530735612136071185b43c6d5520ea1e9d010b163c46469ab234288b2a563e88c12befdb274eda250991

Download Submit
C:\Users\Admin\AppData\Roaming\FFF6.2F2

Filesize
996B

MD5
c4775ed757b02b5ca82e87edd04417d5

SHA1
bcae178bb9adbc4ec48591209ca6ebc0e08ffe5e

SHA256
6fe1c120460431ab513ef52b06a6b3ceea50d6add3b6f801e8427c537c18db45

SHA512
ed7a9948ae8dacdb086df6b91479c2814c9ed28e843f2a77d5599e345a47aae2097e802904ae0a450d394c4707c23d263d1be8386913003b33bceaf4ce14faf8

Download Submit
memory/1628-76-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1628-78-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1628-79-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1996-80-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1996-15-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1996-1-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1996-2-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1996-179-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2852-7-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2852-5-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads