cycbot | 282a5560dd15d62af747fbe53e9de12d5b868679409da64eca0064e41b2c8e79

General

Target

JaffaCakes118_36041f07b7fb1fa6671b0dc78d65072a.exe
Size

169KB
MD5

36041f07b7fb1fa6671b0dc78d65072a
SHA1

4e0a3e5c8ed5a8e79add472a54583580530d5345
SHA256

282a5560dd15d62af747fbe53e9de12d5b868679409da64eca0064e41b2c8e79
SHA512

3b6619497cff93926471a26afbd11083f393536146ea62621b8d14d0960faf4ba7ec6ae99d12743ea59e4e29d1f22461a2e9fe1f8625f44601d1ae0a09ac8ad0
SSDEEP

3072:VkyY5mEzWsPWjLIb+qyk5+KQrCDT9Oeh2telcvkWck78yXNd6HqY:VC5mEasPHbXXQrqrlcvqkH/6K

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/2224-10-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2140-21-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2140-88-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2080-90-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2140-196-0x0000000000400000-0x000000000048A000-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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_36041f07b7fb1fa6671b0dc78d65072a.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/2140-2-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2224-7-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2224-10-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2224-8-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2140-21-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2140-88-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2080-90-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2140-196-0x0000000000400000-0x000000000048A000-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_36041f07b7fb1fa6671b0dc78d65072a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_36041f07b7fb1fa6671b0dc78d65072a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_36041f07b7fb1fa6671b0dc78d65072a.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2140 wrote to memory of 2224	2140	JaffaCakes118_36041f07b7fb1fa6671b0dc78d65072a.exe	29
PID 2140 wrote to memory of 2224	2140	JaffaCakes118_36041f07b7fb1fa6671b0dc78d65072a.exe	29
PID 2140 wrote to memory of 2224	2140	JaffaCakes118_36041f07b7fb1fa6671b0dc78d65072a.exe	29
PID 2140 wrote to memory of 2224	2140	JaffaCakes118_36041f07b7fb1fa6671b0dc78d65072a.exe	29
PID 2140 wrote to memory of 2080	2140	JaffaCakes118_36041f07b7fb1fa6671b0dc78d65072a.exe	31
PID 2140 wrote to memory of 2080	2140	JaffaCakes118_36041f07b7fb1fa6671b0dc78d65072a.exe	31
PID 2140 wrote to memory of 2080	2140	JaffaCakes118_36041f07b7fb1fa6671b0dc78d65072a.exe	31
PID 2140 wrote to memory of 2080	2140	JaffaCakes118_36041f07b7fb1fa6671b0dc78d65072a.exe	31

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_36041f07b7fb1fa6671b0dc78d65072a.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_36041f07b7fb1fa6671b0dc78d65072a.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2140
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_36041f07b7fb1fa6671b0dc78d65072a.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_36041f07b7fb1fa6671b0dc78d65072a.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2224
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_36041f07b7fb1fa6671b0dc78d65072a.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_36041f07b7fb1fa6671b0dc78d65072a.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2080

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

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Downloads

C:\Users\Admin\AppData\Roaming\ADC7.B2A

Filesize
597B

MD5
d44b0e4f8fb59ca60dd779878cf464ba

SHA1
d502b71b17e2c668d2707b693b8ef6a9bfb3d158

SHA256
58758f7a4dade7211f0be80fedb787c7ade9b05a3f18ef24326c51664675b636

SHA512
54986869c6a877cd43382d0994cbb2352c68dc4dd59c7372f2fa9d657dac1a16aefdd183b0d966d002ad4cae17923eee9c7c738f1271cfe5d9505e9075346624

Download Submit
C:\Users\Admin\AppData\Roaming\ADC7.B2A

Filesize
1KB

MD5
d29927a250473e2e6dfe552d35cbd447

SHA1
82dc4d5bbaf28bd0c04c57c939df1523659017a0

SHA256
abb0dcd8190ae56616120052bcb498557cb319f451d0d6a7efb79c7e23c0a268

SHA512
52d3f7fe8d7a49505c3e7440bb323a4c70fee9f19b07be75d71368fe3853a290caa4a3252b21a2137d06b047a2af4df635f01ef2b5143685474ee2200fb3e8d3

Download Submit
C:\Users\Admin\AppData\Roaming\ADC7.B2A

Filesize
897B

MD5
1595f87a5b52ce9a5748444d7a8d5691

SHA1
e063f6b82107285e3435e9e1870b7688257ed0e1

SHA256
b75125b2b83e0903bbb90248e51555cb34caffd448a2747d88c3fca59df6ce18

SHA512
39f1f982b0c57ca4b7c8fdccec7349ddc8c020d6da11f527187271ab850d93ce544bc6d6f74a35b2213d41f9ad2ac99c160760554761207a7802f9fda5c21c33

Download Submit
C:\Users\Admin\AppData\Roaming\ADC7.B2A

Filesize
1KB

MD5
b2a82e161b095fed9ef279e77ffa11a5

SHA1
c2783f36fd7dcc390796fa029f3ebda438535046

SHA256
97d32c52189d3aaea4da96dfdf658b09898a0717641b464660b9843c893f2cf7

SHA512
4dc55b78654796ca24d17a113264c68df1e147aa1b94d95beb6a2400ac73800a1ec7bdfa0a34054dee2582cebc8ebfac0a22adb12293aa13e2859bc9bb7ff3e3

Download Submit
memory/2080-90-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2140-21-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2140-1-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2140-88-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2140-2-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2140-196-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2224-8-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2224-10-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2224-7-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads