cycbot | 0fcf50c309999134e6376bf888fb462b358f8b0e4dede2ad9eaabdd33e489216

General

Target

JaffaCakes118_677ca1c9d30d0e112bc541c87198506a.exe
Size

181KB
MD5

677ca1c9d30d0e112bc541c87198506a
SHA1

4f38c5b2af8152baac0f7b84648d4691ae389480
SHA256

0fcf50c309999134e6376bf888fb462b358f8b0e4dede2ad9eaabdd33e489216
SHA512

d101727803a5cedade6cf620bdc44c2d07e93dd371294f0044e9668e6954be823c4ff07b45f4e1ae50cc518498b00d8cd28cdb5a501852f80e9f304b1eb0287c
SSDEEP

3072:Gxl1HO4NAPPrQv93zKRKtgI0H97iBAdjUYy6N7GaUnzyI5dTjfREoOuQHOOZzo:GbdO4ePPa3zdkH9kAd5N7GhnHtjfREo8

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 6 IoCs

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

resource	yara_rule
behavioral1/memory/2800-8-0x0000000000400000-0x0000000000466000-memory.dmp	family_cycbot
behavioral1/memory/2800-9-0x0000000000400000-0x0000000000466000-memory.dmp	family_cycbot
behavioral1/memory/2892-19-0x0000000000400000-0x0000000000466000-memory.dmp	family_cycbot
behavioral1/memory/2188-85-0x0000000000400000-0x0000000000466000-memory.dmp	family_cycbot
behavioral1/memory/2892-86-0x0000000000400000-0x0000000000466000-memory.dmp	family_cycbot
behavioral1/memory/2892-183-0x0000000000400000-0x0000000000466000-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_677ca1c9d30d0e112bc541c87198506a.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/2892-2-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2892-1-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2800-6-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2800-8-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2800-9-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2892-19-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2188-85-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2892-86-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2892-183-0x0000000000400000-0x0000000000466000-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_677ca1c9d30d0e112bc541c87198506a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_677ca1c9d30d0e112bc541c87198506a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_677ca1c9d30d0e112bc541c87198506a.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2892 wrote to memory of 2800	2892	JaffaCakes118_677ca1c9d30d0e112bc541c87198506a.exe	30
PID 2892 wrote to memory of 2800	2892	JaffaCakes118_677ca1c9d30d0e112bc541c87198506a.exe	30
PID 2892 wrote to memory of 2800	2892	JaffaCakes118_677ca1c9d30d0e112bc541c87198506a.exe	30
PID 2892 wrote to memory of 2800	2892	JaffaCakes118_677ca1c9d30d0e112bc541c87198506a.exe	30
PID 2892 wrote to memory of 2188	2892	JaffaCakes118_677ca1c9d30d0e112bc541c87198506a.exe	32
PID 2892 wrote to memory of 2188	2892	JaffaCakes118_677ca1c9d30d0e112bc541c87198506a.exe	32
PID 2892 wrote to memory of 2188	2892	JaffaCakes118_677ca1c9d30d0e112bc541c87198506a.exe	32
PID 2892 wrote to memory of 2188	2892	JaffaCakes118_677ca1c9d30d0e112bc541c87198506a.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_677ca1c9d30d0e112bc541c87198506a.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_677ca1c9d30d0e112bc541c87198506a.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2892
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_677ca1c9d30d0e112bc541c87198506a.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_677ca1c9d30d0e112bc541c87198506a.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2800
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_677ca1c9d30d0e112bc541c87198506a.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_677ca1c9d30d0e112bc541c87198506a.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2188

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\6212.D70

Filesize
1KB

MD5
c7adb347e2aa2763f1b4712bc0ad3b5c

SHA1
1d4178b023fff901595beef089dd0a414e8c5579

SHA256
db6fc92d3e64a42b02ec6f1daa6003ebe24d07096fba76250b6d7a900b2f7907

SHA512
e0fe464676c68b2c3b7696585c820996b3ac4f1b487c76a977a7e1815bc56d6ed44e232134c87526bf89811d6843c89aef39c9560c444cd37ae1f32a5bd2c8ec

Download Submit
C:\Users\Admin\AppData\Roaming\6212.D70

Filesize
897B

MD5
6dac11edaf49f1946a0b3e7bffa4e10d

SHA1
216695e494578b21655736ea0f30235a931b8d03

SHA256
0c919daa910e229311de10d0712ade57ebeb37ad34f57bb6aa20e9a93cb9ba92

SHA512
4aa1927db0a4834b2dfa93cb23b3f0e47a096fcdca5270880484b5258bef6a8a70b7f92f885c1841d07955477a37887d4fa945c8254001f989a140ba68db3162

Download Submit
C:\Users\Admin\AppData\Roaming\6212.D70

Filesize
1KB

MD5
c820f437ec84430b430643eb0ffe90e8

SHA1
caa2c55e3878bbe0fd22de3e614836d830febd42

SHA256
af7a1466edecca8497398ecae41293f1e3a2208812fe02a3bea01172a45023df

SHA512
1cb477a279eb999d6cf0a444da12c0571a555d6e8075f83864bfbfecd16568168d4a2297c9ddb51b506a9c062de91b7c78bc81c25fd9f86b917af9cf3280157b

Download Submit
memory/2188-85-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2188-84-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2800-8-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2800-9-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2800-6-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2892-19-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2892-2-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2892-86-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2892-1-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2892-183-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads