cycbot | b5778f8e8fcc1d06f0a684a383883f83ced63f980573463eba2381c09bf1e19d

General

Target

e85fa12ac36d0bb243227325072eee77_JaffaCakes118.exe
Size

165KB
MD5

e85fa12ac36d0bb243227325072eee77
SHA1

d12d5f59c3bbb4f779e90b2cb6fbd1ce710bf795
SHA256

b5778f8e8fcc1d06f0a684a383883f83ced63f980573463eba2381c09bf1e19d
SHA512

a8cf247c95af609557041cc88c3cb1e3cd34bbeb4b85422c5615d9476b8fd06d056b4e379136f14bf250dd166975ea3f9accaa0f9ed912b62436dc1be62bfbf0
SSDEEP

3072:XBOz/2NsqcjZ/A8JCFtPdIkR6ZgLDPVT7m4nPfkQZO:RaGcjegCjPdd6yF7m4PfB

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/2740-10-0x0000000000400000-0x0000000000445000-memory.dmp	family_cycbot
behavioral1/memory/2824-15-0x0000000000400000-0x0000000000445000-memory.dmp	family_cycbot
behavioral1/memory/2996-90-0x0000000000400000-0x0000000000445000-memory.dmp	family_cycbot
behavioral1/memory/2824-147-0x0000000000400000-0x0000000000445000-memory.dmp	family_cycbot
behavioral1/memory/2824-198-0x0000000000400000-0x0000000000445000-memory.dmp	family_cycbot

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\conhost = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\conhost.exe"	e85fa12ac36d0bb243227325072eee77_JaffaCakes118.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2824-2-0x0000000000400000-0x0000000000445000-memory.dmp	upx
behavioral1/memory/2740-10-0x0000000000400000-0x0000000000445000-memory.dmp	upx
behavioral1/memory/2824-15-0x0000000000400000-0x0000000000445000-memory.dmp	upx
behavioral1/memory/2996-89-0x0000000000400000-0x0000000000445000-memory.dmp	upx
behavioral1/memory/2996-90-0x0000000000400000-0x0000000000445000-memory.dmp	upx
behavioral1/memory/2824-147-0x0000000000400000-0x0000000000445000-memory.dmp	upx
behavioral1/memory/2824-198-0x0000000000400000-0x0000000000445000-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	e85fa12ac36d0bb243227325072eee77_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e85fa12ac36d0bb243227325072eee77_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e85fa12ac36d0bb243227325072eee77_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2824 wrote to memory of 2740	2824	e85fa12ac36d0bb243227325072eee77_JaffaCakes118.exe	30
PID 2824 wrote to memory of 2740	2824	e85fa12ac36d0bb243227325072eee77_JaffaCakes118.exe	30
PID 2824 wrote to memory of 2740	2824	e85fa12ac36d0bb243227325072eee77_JaffaCakes118.exe	30
PID 2824 wrote to memory of 2740	2824	e85fa12ac36d0bb243227325072eee77_JaffaCakes118.exe	30
PID 2824 wrote to memory of 2996	2824	e85fa12ac36d0bb243227325072eee77_JaffaCakes118.exe	32
PID 2824 wrote to memory of 2996	2824	e85fa12ac36d0bb243227325072eee77_JaffaCakes118.exe	32
PID 2824 wrote to memory of 2996	2824	e85fa12ac36d0bb243227325072eee77_JaffaCakes118.exe	32
PID 2824 wrote to memory of 2996	2824	e85fa12ac36d0bb243227325072eee77_JaffaCakes118.exe	32

C:\Users\Admin\AppData\Local\Temp\e85fa12ac36d0bb243227325072eee77_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e85fa12ac36d0bb243227325072eee77_JaffaCakes118.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2824
- C:\Users\Admin\AppData\Local\Temp\e85fa12ac36d0bb243227325072eee77_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\e85fa12ac36d0bb243227325072eee77_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\dwm.exe%C:\Users\Admin\AppData\Roaming
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2740
- C:\Users\Admin\AppData\Local\Temp\e85fa12ac36d0bb243227325072eee77_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\e85fa12ac36d0bb243227325072eee77_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2996

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

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\BB3F.61A

Filesize
600B

MD5
ab40b812eb743810b29ff84cda9ab378

SHA1
022a44ac17dd8f2630ea2b117e9b55bd7834f968

SHA256
354209b23a66ad879acd87d9fa0fdc98eb9ba70f3514828ef8a20978e4e94f7f

SHA512
9292ec163b51b20a61014d9e397214230de4852e9a75c54b28635fc6d7cef7dedd41d17fb9c9b597afcc15368c49b0e108f2911baaead5dc0a4ab07bcef1e8b4

Download Submit
C:\Users\Admin\AppData\Roaming\BB3F.61A

Filesize
1KB

MD5
cf816fc5210425c3ea9601cca005091b

SHA1
0b851c8a86d8bf85b2f8ac7d26860b711c5ec8ee

SHA256
e4e0593bf0c5f61e578275c5f72b930fc7c0359b2584b7f26ad7c9f941bc2023

SHA512
9a0cf1612e108da25fa8e6783d21cce95a196cd20a8c7ee426548a4e5a2ff807c038df59d55ff94b522b8bba25cc30b367e005d45a736cabd304b43d5d62f901

Download Submit
C:\Users\Admin\AppData\Roaming\BB3F.61A

Filesize
996B

MD5
7f9450d58a0ed03783425b24b6a12f35

SHA1
3b4d17f24e2bd48a232dc45173b88b8e4ffc51ae

SHA256
08fc28f1df4ea76d0ef1d19ddef9fe05a0a5ea83170d62371ca9f807c58143af

SHA512
11195c7837320ec0eca2e9fd636d02804ba9ff9b39cd1d965d634417673e2300363063d739a5370805b9967912af81c65fdb1e118ea6f5047b58866d9bca011b

Download Submit
memory/2740-10-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/2740-9-0x00000000005A6000-0x00000000005BE000-memory.dmp

Filesize
96KB

Download
memory/2740-7-0x0000000000560000-0x0000000000660000-memory.dmp

Filesize
1024KB

Download
memory/2824-15-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/2824-1-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/2824-147-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/2824-2-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/2824-198-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/2996-88-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/2996-89-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/2996-90-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads