cycbot | a70f764ae1eb6ae3fb5ef599b86db3a0847c148d86546ae0566bf9abb8686a77

General

Target

JaffaCakes118_23a600f3feb8a4c97be5b340d8a23d22.exe
Size

180KB
MD5

23a600f3feb8a4c97be5b340d8a23d22
SHA1

69e0ae6e0f7a1bde2c0181061f5464e80adc6921
SHA256

a70f764ae1eb6ae3fb5ef599b86db3a0847c148d86546ae0566bf9abb8686a77
SHA512

ec0246ad77c59b3f8b2fa4aeb13b3cf51cfbcf99988d3bc8cfcfde0f82c4a67200b1a5e2fc4f7063152d737c55cab843c9e5748f6e4ca89d3f31903db2196d17
SSDEEP

3072:ZLcyLkwnNCCNWPUTymCveMrNfLGJkJZZHC4jfqhPiqi2ZgRDrYmeRXCd:ZrLkHCNJb4dLzJZZHpSPJ8TP

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/2088-8-0x0000000000400000-0x0000000000466000-memory.dmp	family_cycbot
behavioral1/memory/2112-18-0x0000000000400000-0x0000000000466000-memory.dmp	family_cycbot
behavioral1/memory/2636-77-0x0000000000400000-0x0000000000466000-memory.dmp	family_cycbot
behavioral1/memory/2112-78-0x0000000000400000-0x0000000000466000-memory.dmp	family_cycbot
behavioral1/memory/2112-175-0x0000000000400000-0x0000000000466000-memory.dmp	family_cycbot
behavioral1/memory/2112-210-0x0000000000400000-0x0000000000466000-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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_23a600f3feb8a4c97be5b340d8a23d22.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/2112-2-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2088-8-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2088-7-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2112-18-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2636-76-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2636-77-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2112-78-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2112-175-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2112-210-0x0000000000400000-0x0000000000466000-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_23a600f3feb8a4c97be5b340d8a23d22.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_23a600f3feb8a4c97be5b340d8a23d22.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_23a600f3feb8a4c97be5b340d8a23d22.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2112 wrote to memory of 2088	2112	JaffaCakes118_23a600f3feb8a4c97be5b340d8a23d22.exe	30
PID 2112 wrote to memory of 2088	2112	JaffaCakes118_23a600f3feb8a4c97be5b340d8a23d22.exe	30
PID 2112 wrote to memory of 2088	2112	JaffaCakes118_23a600f3feb8a4c97be5b340d8a23d22.exe	30
PID 2112 wrote to memory of 2088	2112	JaffaCakes118_23a600f3feb8a4c97be5b340d8a23d22.exe	30
PID 2112 wrote to memory of 2636	2112	JaffaCakes118_23a600f3feb8a4c97be5b340d8a23d22.exe	33
PID 2112 wrote to memory of 2636	2112	JaffaCakes118_23a600f3feb8a4c97be5b340d8a23d22.exe	33
PID 2112 wrote to memory of 2636	2112	JaffaCakes118_23a600f3feb8a4c97be5b340d8a23d22.exe	33
PID 2112 wrote to memory of 2636	2112	JaffaCakes118_23a600f3feb8a4c97be5b340d8a23d22.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_23a600f3feb8a4c97be5b340d8a23d22.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_23a600f3feb8a4c97be5b340d8a23d22.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2112
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_23a600f3feb8a4c97be5b340d8a23d22.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_23a600f3feb8a4c97be5b340d8a23d22.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2088
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_23a600f3feb8a4c97be5b340d8a23d22.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_23a600f3feb8a4c97be5b340d8a23d22.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2636

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\3129.8C8

Filesize
1KB

MD5
dbbb4726cbc63941f4451a31117a7697

SHA1
b95b174592b52ed5996614a3de536a0d3dac8dc2

SHA256
b2ff7b824028aeb5ec99e0d9caa343ae88ba98995304b428833f0a111ecbd17d

SHA512
6de6b04b0213aea546c27061c89809f9ed2de671cdce8b74e847b1775c5b915a1c0167227d40d31dea220e0d9c8b3afc6c9ee0ea9d6e2e6ba82d4d70cc1a2add

Download Submit
C:\Users\Admin\AppData\Roaming\3129.8C8

Filesize
897B

MD5
08434fe0e91e08b1d0cd9be98f519348

SHA1
8eee3761c9ef8c705a5fc5bc2593852a0707de03

SHA256
21ac89316802119835e38a07914a21b63ea6d8285fc6e7db4cac7eafcaee33d7

SHA512
680437315eafe28489e937d5e80f5f2855b8a12c84fdeda1a4e6d5faaed9c12e40233bc4e8caabf64e3476511efe914406eaedb6bb8def4b766b2af30a3ddb60

Download Submit
C:\Users\Admin\AppData\Roaming\3129.8C8

Filesize
1KB

MD5
6d04087d3e665c0c8cfee4af18e2013e

SHA1
6c15d4edd1dce8f1a8a11c33adf33701f373c052

SHA256
2e0fa90de681132f3962b534e60eea452e2a30e29b5a22963a4c7dbdb3d9397e

SHA512
701b483d4f86f7731f27c965e6d7861caad8f765d307f5a1298218210ddc57c9cc05a794ab932e014c909e82914ef7c55f921157e3720641e4cb15138ea97100

Download Submit
memory/2088-7-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2088-8-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2112-18-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2112-1-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2112-78-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2112-2-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2112-175-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2112-210-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2636-76-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2636-77-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads