cycbot | f5b243c6087cbebafdc27c0f0c60937c24323dd17b14dd66ad9b90def4cb299a

General

Target

94ca4dbfbbfb009322d782c4bab76879_JaffaCakes118.exe
Size

174KB
MD5

94ca4dbfbbfb009322d782c4bab76879
SHA1

e49a604dbdc9e00c42f73db128b32eb708cd89b2
SHA256

f5b243c6087cbebafdc27c0f0c60937c24323dd17b14dd66ad9b90def4cb299a
SHA512

86ec57d9cf02b3058cc5d05eb7aabb43a51789c614641df139a45d3941a62e9a10d78c48ca6ea44cd200b8b58d8e1812044b0c330fa3c2d8cb162b993fab2cfc
SSDEEP

3072:4TyCGlKp5zhil/eMkb/31Owp5O9pFPPcJX4CtdyNgl2IOyx8DbZ:4TyCNpnu/eTb/FOwp5O9DPcJ/dyNm2IY

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 5 IoCs

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

Processes:

resource	yara_rule
behavioral1/memory/3000-14-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/1688-16-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/1444-93-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/1688-96-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/1688-205-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

Processes:

94ca4dbfbbfb009322d782c4bab76879_JaffaCakes118.exe

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"	94ca4dbfbbfb009322d782c4bab76879_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 9 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1688-2-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/3000-12-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/3000-14-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/3000-15-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/1688-16-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/3000-86-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/1444-93-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/1688-96-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/1688-205-0x0000000000400000-0x000000000048D000-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

Processes:

94ca4dbfbbfb009322d782c4bab76879_JaffaCakes118.exe94ca4dbfbbfb009322d782c4bab76879_JaffaCakes118.exe94ca4dbfbbfb009322d782c4bab76879_JaffaCakes118.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	94ca4dbfbbfb009322d782c4bab76879_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	94ca4dbfbbfb009322d782c4bab76879_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	94ca4dbfbbfb009322d782c4bab76879_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

94ca4dbfbbfb009322d782c4bab76879_JaffaCakes118.exe

description	pid	Process	procid_target
PID 1688 wrote to memory of 3000	1688	94ca4dbfbbfb009322d782c4bab76879_JaffaCakes118.exe	30
PID 1688 wrote to memory of 3000	1688	94ca4dbfbbfb009322d782c4bab76879_JaffaCakes118.exe	30
PID 1688 wrote to memory of 3000	1688	94ca4dbfbbfb009322d782c4bab76879_JaffaCakes118.exe	30
PID 1688 wrote to memory of 3000	1688	94ca4dbfbbfb009322d782c4bab76879_JaffaCakes118.exe	30
PID 1688 wrote to memory of 1444	1688	94ca4dbfbbfb009322d782c4bab76879_JaffaCakes118.exe	32
PID 1688 wrote to memory of 1444	1688	94ca4dbfbbfb009322d782c4bab76879_JaffaCakes118.exe	32
PID 1688 wrote to memory of 1444	1688	94ca4dbfbbfb009322d782c4bab76879_JaffaCakes118.exe	32
PID 1688 wrote to memory of 1444	1688	94ca4dbfbbfb009322d782c4bab76879_JaffaCakes118.exe	32

C:\Users\Admin\AppData\Local\Temp\94ca4dbfbbfb009322d782c4bab76879_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\94ca4dbfbbfb009322d782c4bab76879_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1688
- C:\Users\Admin\AppData\Local\Temp\94ca4dbfbbfb009322d782c4bab76879_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\94ca4dbfbbfb009322d782c4bab76879_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3000
- C:\Users\Admin\AppData\Local\Temp\94ca4dbfbbfb009322d782c4bab76879_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\94ca4dbfbbfb009322d782c4bab76879_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1444

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\45BE.88F

Filesize
1KB

MD5
c93cffbed664022f27d2628f660d6b44

SHA1
e35155f43e4dad7623c0a9616c672c0ea2633017

SHA256
249a0d8e91ad2b56bac6ab026f210b3af0c672c4686fa43883afee66d4aef729

SHA512
dacb66ec934926a4ea07c99df81cb3812cac1806947697378ace7986ab5dbc08b808aed77d29d059bb334dc14743f5a594da3da14a38c6573617acefe9438d34

Download Submit
C:\Users\Admin\AppData\Roaming\45BE.88F

Filesize
600B

MD5
640486914a2d4ef072219785ecbe981d

SHA1
642c4a81eb8e22a95c150745adb728752ab208af

SHA256
a6cb96b45f4098532bd18c7a67a36272cee7f0f39ca5012fbc6374fb42458014

SHA512
6bf0135fa2b4537d52cdd394dc058dee1e0b9aafd1cdc83415a3696c768c893b36143de3264009245b6273a04e30abfaa38f67b66e369d1b4454e45ca160f47a

Download Submit
memory/1444-94-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/1444-95-0x0000000000675000-0x000000000068F000-memory.dmp

Filesize
104KB

Download
memory/1444-93-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/1444-97-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/1688-16-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/1688-1-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/1688-96-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/1688-2-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/1688-205-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/3000-14-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/3000-15-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/3000-12-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/3000-86-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads