cycbot | 29fd5e422fb5233fa538214586b8b790823af18489d86b5db50d17ea8ebdb317

General

Target

da27bcd4562e3294c1e645534cbe042f_JaffaCakes118.exe
Size

168KB
MD5

da27bcd4562e3294c1e645534cbe042f
SHA1

bbd1f875772739ace1241d03eafe63b71222b6c2
SHA256

29fd5e422fb5233fa538214586b8b790823af18489d86b5db50d17ea8ebdb317
SHA512

8430362fe6be7eb17c607891c60523add034ea5bf02b6bb2cf47b281284c8bf94e3fc40dae6228eeec00b286abe4dfeb4bb3bef3fa332dafecb225e9cc57eae3
SSDEEP

3072:S5Wt/iXE2F7S0nmJqPTsEof4R88yz7FzxTiiisHs2fKnqIBYaFIDe3i:SUt/uPdqJqPYEc4WD7FzEbYaFIDeS

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/2100-7-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/268-15-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/268-83-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/1732-86-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/1732-87-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/268-197-0x0000000000400000-0x000000000046A000-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-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	da27bcd4562e3294c1e645534cbe042f_JaffaCakes118.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/268-2-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2100-6-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2100-7-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/268-15-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/268-83-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/1732-86-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/1732-87-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/268-197-0x0000000000400000-0x000000000046A000-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	da27bcd4562e3294c1e645534cbe042f_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	da27bcd4562e3294c1e645534cbe042f_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	da27bcd4562e3294c1e645534cbe042f_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 268 wrote to memory of 2100	268	da27bcd4562e3294c1e645534cbe042f_JaffaCakes118.exe	30
PID 268 wrote to memory of 2100	268	da27bcd4562e3294c1e645534cbe042f_JaffaCakes118.exe	30
PID 268 wrote to memory of 2100	268	da27bcd4562e3294c1e645534cbe042f_JaffaCakes118.exe	30
PID 268 wrote to memory of 2100	268	da27bcd4562e3294c1e645534cbe042f_JaffaCakes118.exe	30
PID 268 wrote to memory of 1732	268	da27bcd4562e3294c1e645534cbe042f_JaffaCakes118.exe	32
PID 268 wrote to memory of 1732	268	da27bcd4562e3294c1e645534cbe042f_JaffaCakes118.exe	32
PID 268 wrote to memory of 1732	268	da27bcd4562e3294c1e645534cbe042f_JaffaCakes118.exe	32
PID 268 wrote to memory of 1732	268	da27bcd4562e3294c1e645534cbe042f_JaffaCakes118.exe	32

C:\Users\Admin\AppData\Local\Temp\da27bcd4562e3294c1e645534cbe042f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\da27bcd4562e3294c1e645534cbe042f_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:268
- C:\Users\Admin\AppData\Local\Temp\da27bcd4562e3294c1e645534cbe042f_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\da27bcd4562e3294c1e645534cbe042f_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2100
- C:\Users\Admin\AppData\Local\Temp\da27bcd4562e3294c1e645534cbe042f_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\da27bcd4562e3294c1e645534cbe042f_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1732

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\7C79.26A

Filesize
1KB

MD5
bc07db5a83fe43ef8ee4c51d6e278c73

SHA1
4016c8c3991bee7b9e05bce3ed485128a4dd5537

SHA256
52a8000865ae360bd5d332348f3eda8f24c491600d5ed6f801fc4d3d4f065bc6

SHA512
7afdc11151bd93a07038aca05008b9e557094d1a27f2e40b880bba5cd1e48f08ddfd7fcf5dc705ec7e628c4a3a322274fb9873b7683159bc02475c4051862758

Download Submit
C:\Users\Admin\AppData\Roaming\7C79.26A

Filesize
600B

MD5
1b72c2e48d6998e56003186dd8283443

SHA1
5f8386e0b4be8cad1a83ce331da23dc9c24c20fc

SHA256
c42b239370a8fdd505a2b663fd4807fb7d09dbc717ef172b4f165fb61e1f50cb

SHA512
9ae454010f865d7ab9c13048683bfb5d2ef9412c766515c372497029048f2a74c73e85f2c20f25164d3837d24f1d858ebf585a3da52c6dcae4995302f6515d2d

Download Submit
memory/268-1-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/268-2-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/268-15-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/268-83-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/268-197-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/1732-86-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/1732-87-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2100-6-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2100-5-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2100-7-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads