cycbot | a37d758d3db9105eea47945d8f5bcff64ae74378296b37bcce2efd482cdc38fb

General

Target

JaffaCakes118_96ca09f7b8c59df3f343631eeeaa7a7c.exe
Size

185KB
MD5

96ca09f7b8c59df3f343631eeeaa7a7c
SHA1

e591fb9c93e47236b65719ecfc19ddebf2fe910f
SHA256

a37d758d3db9105eea47945d8f5bcff64ae74378296b37bcce2efd482cdc38fb
SHA512

4351db80a4b2f3ca0ecb90f5858cb57b1b7815ede4993173a77e3f6c5e0255621b819f6af820ba82755c14d69c5c8a1d357c57a063a2e2aa6da8621af46a0495
SSDEEP

3072:mdgwdN3lgAaLaRMn6e4swtF/vcl8X4spcUAqq1fUIRGlj0jUw2I5rc3Raa9:RY3iAaL0cEt9cXspHFyVGlm2Ia3Raa

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/2804-7-0x0000000000400000-0x0000000000466000-memory.dmp	family_cycbot
behavioral1/memory/2904-14-0x0000000000400000-0x0000000000466000-memory.dmp	family_cycbot
behavioral1/memory/2628-78-0x0000000000400000-0x0000000000466000-memory.dmp	family_cycbot
behavioral1/memory/2904-79-0x0000000000400000-0x0000000000466000-memory.dmp	family_cycbot
behavioral1/memory/2904-158-0x0000000000400000-0x0000000000466000-memory.dmp	family_cycbot
behavioral1/memory/2904-193-0x0000000000400000-0x0000000000466000-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_96ca09f7b8c59df3f343631eeeaa7a7c.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/2904-2-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2804-7-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2804-5-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2904-14-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2628-78-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2904-79-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2904-158-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2904-193-0x0000000000400000-0x0000000000466000-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_96ca09f7b8c59df3f343631eeeaa7a7c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_96ca09f7b8c59df3f343631eeeaa7a7c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_96ca09f7b8c59df3f343631eeeaa7a7c.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2904 wrote to memory of 2804	2904	JaffaCakes118_96ca09f7b8c59df3f343631eeeaa7a7c.exe	30
PID 2904 wrote to memory of 2804	2904	JaffaCakes118_96ca09f7b8c59df3f343631eeeaa7a7c.exe	30
PID 2904 wrote to memory of 2804	2904	JaffaCakes118_96ca09f7b8c59df3f343631eeeaa7a7c.exe	30
PID 2904 wrote to memory of 2804	2904	JaffaCakes118_96ca09f7b8c59df3f343631eeeaa7a7c.exe	30
PID 2904 wrote to memory of 2628	2904	JaffaCakes118_96ca09f7b8c59df3f343631eeeaa7a7c.exe	32
PID 2904 wrote to memory of 2628	2904	JaffaCakes118_96ca09f7b8c59df3f343631eeeaa7a7c.exe	32
PID 2904 wrote to memory of 2628	2904	JaffaCakes118_96ca09f7b8c59df3f343631eeeaa7a7c.exe	32
PID 2904 wrote to memory of 2628	2904	JaffaCakes118_96ca09f7b8c59df3f343631eeeaa7a7c.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_96ca09f7b8c59df3f343631eeeaa7a7c.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_96ca09f7b8c59df3f343631eeeaa7a7c.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2904
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_96ca09f7b8c59df3f343631eeeaa7a7c.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_96ca09f7b8c59df3f343631eeeaa7a7c.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2804
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_96ca09f7b8c59df3f343631eeeaa7a7c.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_96ca09f7b8c59df3f343631eeeaa7a7c.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2628

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\156A.5BA

Filesize
1KB

MD5
abdc11aded7971245c7490339cfda9c5

SHA1
4facb6085778b55ab12999d79e7b377ab32f8327

SHA256
dfc375da1a1246a052e71773ea9df6b6a67f4795e796dc72c6a6e4fa068d0d89

SHA512
43b5e8bec3d95bc38cd9f4a4fa0ae423fbfbb6b620e914e72ad1a07af80340d514cd69f65fd0d4ee9405a567cee6d5c6b29d987f6d392b1962d7aa6b8b2218a1

Download Submit
C:\Users\Admin\AppData\Roaming\156A.5BA

Filesize
600B

MD5
118241205671044d87477d2e368bd616

SHA1
53f2c516aefe1a51498a764f858a1308528ce6b8

SHA256
3b7db25a5f265658162e10b10fc32ddb74063d10aa340aa3eb6bda3aec4f6ea7

SHA512
e4d965ae8af4b47573915e7fd0c0fb49a9c475dc812d3cce4ff5949463a65f80f70d38a44726c5103937072e8de4f541667cc522204f985c5d2ea9b173dab531

Download Submit
C:\Users\Admin\AppData\Roaming\156A.5BA

Filesize
996B

MD5
873db04640ee775d6e59e56e237d0ecf

SHA1
691c417fc8c953b2f79768b2f5c68fad20435992

SHA256
31cf70ad3eba5b4f82e2555a8f33d69083ccdcc371ad3957e32ce36ce24289a9

SHA512
8459bdac479480a1b94e177ce6266aa3390bd23879ee1f7847ca174581cc6788ef3e2489330c498c1daac7965be95cc8e80b0ab44bdf31ae089b0c28e97e288d

Download Submit
memory/2628-76-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2628-78-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2804-5-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2804-7-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2904-14-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2904-1-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2904-79-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2904-2-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2904-158-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2904-193-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads