cycbot | 75665712ae3afe923a7d3955f6abde69d770915e1394d4461ebe8fb0e5a03c6d

General

Target

JaffaCakes118_0644a36112dc84e64ec836abcc9d4bf0.exe
Size

167KB
MD5

0644a36112dc84e64ec836abcc9d4bf0
SHA1

de42a0d6a0f372f3a3c22f0cd5c4ace55229e415
SHA256

75665712ae3afe923a7d3955f6abde69d770915e1394d4461ebe8fb0e5a03c6d
SHA512

41e61ed4fc76bc3d30eb588383ed1a03dd641468e713aaeae63020e100502d6a88a6ed49a603ee64dd1eb5c58394718fa10092d062358e2294bc9ec91cec58b3
SSDEEP

3072:QOXbTyNkYhsO1d3NTw8RgA/LqNExmHURwslnInWbUt+w/:vyNrhd1w8RDxmHURJlWWbU

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/2268-9-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2876-20-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2268-85-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2876-84-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2296-89-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2876-151-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2876-182-0x0000000000400000-0x000000000048A000-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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_0644a36112dc84e64ec836abcc9d4bf0.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 10 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2876-2-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2268-7-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2268-9-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2876-20-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2268-85-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2876-84-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2296-87-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2296-89-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2876-151-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2876-182-0x0000000000400000-0x000000000048A000-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_0644a36112dc84e64ec836abcc9d4bf0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_0644a36112dc84e64ec836abcc9d4bf0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_0644a36112dc84e64ec836abcc9d4bf0.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2876 wrote to memory of 2268	2876	JaffaCakes118_0644a36112dc84e64ec836abcc9d4bf0.exe	30
PID 2876 wrote to memory of 2268	2876	JaffaCakes118_0644a36112dc84e64ec836abcc9d4bf0.exe	30
PID 2876 wrote to memory of 2268	2876	JaffaCakes118_0644a36112dc84e64ec836abcc9d4bf0.exe	30
PID 2876 wrote to memory of 2268	2876	JaffaCakes118_0644a36112dc84e64ec836abcc9d4bf0.exe	30
PID 2876 wrote to memory of 2296	2876	JaffaCakes118_0644a36112dc84e64ec836abcc9d4bf0.exe	32
PID 2876 wrote to memory of 2296	2876	JaffaCakes118_0644a36112dc84e64ec836abcc9d4bf0.exe	32
PID 2876 wrote to memory of 2296	2876	JaffaCakes118_0644a36112dc84e64ec836abcc9d4bf0.exe	32
PID 2876 wrote to memory of 2296	2876	JaffaCakes118_0644a36112dc84e64ec836abcc9d4bf0.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0644a36112dc84e64ec836abcc9d4bf0.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0644a36112dc84e64ec836abcc9d4bf0.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2876
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0644a36112dc84e64ec836abcc9d4bf0.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0644a36112dc84e64ec836abcc9d4bf0.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2268
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0644a36112dc84e64ec836abcc9d4bf0.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0644a36112dc84e64ec836abcc9d4bf0.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2296

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\06B6.13D

Filesize
597B

MD5
e801bd80c31f2803f64e9d5bd8f3ca7c

SHA1
e612366a850b807c8b5fe4d07378569dff8a7850

SHA256
65bebdf010e0662b494d5ee3b55120e28e24749ad0a3078892177a03778595bd

SHA512
9d8245aa9b5fa6003871ac4e10cc13628677f3a295887a2986fb8930dab5a4b3fbc6572c31f668ade343b2fb0ed1c65e60985809ce044504e2f88abdb903866c

Download Submit
C:\Users\Admin\AppData\Roaming\06B6.13D

Filesize
1KB

MD5
b2a45d3a51612f946e3d973fe5affd81

SHA1
ef9221fd8f39842feb1a14aa85fc717618d4a7b5

SHA256
88571874d7cac7326331b5c1aa4cf150699f2d0633820256e260d00d4520c93d

SHA512
1cf768258e6dd97a70b6204a7a7d6620ef04cfa036fe6808a091a6d6c3c0502defb187ee3920c4b8010c340ff679922cb4e698f97488c6978c5de73ec0c0abf1

Download Submit
C:\Users\Admin\AppData\Roaming\06B6.13D

Filesize
897B

MD5
1fe1066760d674cd3bffbe0e00427c3f

SHA1
5293199e06bbb7d21c2389820de13604a9bea418

SHA256
dcc0c508189cf511b32ba77380321169b1a08713703c971b5d2fed0d2c5f4b4f

SHA512
ddbe6afcd91b5a621d3dadd88eb59414cc77116bbaef2542e60dd1e5376308a6a0bc62fea4a5a81dfac4b1ec5b9bb6fc44b2cd2eef7643585c67b0f475829e51

Download Submit
memory/2268-85-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2268-7-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2268-9-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2296-87-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2296-89-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2876-20-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2876-84-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2876-1-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2876-2-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2876-151-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2876-182-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads