cycbot | a8324544e626c81730e901110af10c4691c5b4e170820fd44b263bca1d649009

General

Target

JaffaCakes118_43fbced0d9afb6dad1afb2d1453df515.exe
Size

181KB
MD5

43fbced0d9afb6dad1afb2d1453df515
SHA1

1b974c77fd26f56c9daacf32fb7e485d55a6ec89
SHA256

a8324544e626c81730e901110af10c4691c5b4e170820fd44b263bca1d649009
SHA512

c3acf5faec0d7c6c78b4122ce4c7f42843820cb1b841a22f04c901ed82dea81ef55617b0a30a236f4f4dbf34b479741ed8b23cc907e33589ef899493728e01ff
SSDEEP

3072:USCouxNVzz0+CF8geNeKok6WpqtPHMrzFoTgEO16Zq/27WrolUjTfg6RjjaPnCeF:U17xNV03O19okJqpMrzFohrq/27WdjjQ

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++.

resource	yara_rule
behavioral1/memory/2628-9-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2772-19-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/624-82-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2772-83-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2772-178-0x0000000000400000-0x000000000048A000-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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_43fbced0d9afb6dad1afb2d1453df515.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/2772-2-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2628-9-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2628-8-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2628-6-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2772-19-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/624-80-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/624-82-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2772-83-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2772-178-0x0000000000400000-0x000000000048A000-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_43fbced0d9afb6dad1afb2d1453df515.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_43fbced0d9afb6dad1afb2d1453df515.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_43fbced0d9afb6dad1afb2d1453df515.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2772 wrote to memory of 2628	2772	JaffaCakes118_43fbced0d9afb6dad1afb2d1453df515.exe	31
PID 2772 wrote to memory of 2628	2772	JaffaCakes118_43fbced0d9afb6dad1afb2d1453df515.exe	31
PID 2772 wrote to memory of 2628	2772	JaffaCakes118_43fbced0d9afb6dad1afb2d1453df515.exe	31
PID 2772 wrote to memory of 2628	2772	JaffaCakes118_43fbced0d9afb6dad1afb2d1453df515.exe	31
PID 2772 wrote to memory of 624	2772	JaffaCakes118_43fbced0d9afb6dad1afb2d1453df515.exe	33
PID 2772 wrote to memory of 624	2772	JaffaCakes118_43fbced0d9afb6dad1afb2d1453df515.exe	33
PID 2772 wrote to memory of 624	2772	JaffaCakes118_43fbced0d9afb6dad1afb2d1453df515.exe	33
PID 2772 wrote to memory of 624	2772	JaffaCakes118_43fbced0d9afb6dad1afb2d1453df515.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_43fbced0d9afb6dad1afb2d1453df515.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_43fbced0d9afb6dad1afb2d1453df515.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2772
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_43fbced0d9afb6dad1afb2d1453df515.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_43fbced0d9afb6dad1afb2d1453df515.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2628
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_43fbced0d9afb6dad1afb2d1453df515.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_43fbced0d9afb6dad1afb2d1453df515.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:624

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\60CF.437

Filesize
1KB

MD5
4df5bdc23335a502b6dbf816e4dcc640

SHA1
41c8cd689561f69c55b2036939a9ba984c340469

SHA256
f60987ec47a431c9d4d30759db3f5412097e6e33b0258c89a1c0f9bcc0b0e504

SHA512
371ba2b5ef77354d2f491b9419f1c08b64a0516acb833f2745352d65bcd3cb21f5175966b88170853d13cc7fe37aeaeec033976cd64a631d083f80a7daefed2f

Download Submit
C:\Users\Admin\AppData\Roaming\60CF.437

Filesize
597B

MD5
ab8d39a73b81653c9aaa92f68bfa389f

SHA1
2056a9d0f7f1781e741c4b07171d9319e66ce31d

SHA256
33a28eaa5fe776b1c1eb941a4311507be19c1dc8ed196ed0c1707a46702b8642

SHA512
115a9944f9fdef653d2e76de17ac6a0d4692e7dbea23fe4a4aa9c1cb04b4c673e79d5fac56ceada634dd299730ba1e619dab3fb4dbdfba454f2c888de286bbec

Download Submit
C:\Users\Admin\AppData\Roaming\60CF.437

Filesize
897B

MD5
d5327e1cb6eca51e94133f7901af7072

SHA1
2174ec523a8d3f00f54c6f466365b640ce3d5b94

SHA256
1ce30dd8ab9ae099e91411571dc02272cb9d193bb2774cc6f0a789c2ef7d9c25

SHA512
c85ce6c98eacc90e2c429c596be8905c4a7f345be7f344f1cc874ca1d4a4dc0e5a5f6935634792dc6e9ace1b26c79b0c42dfa364a25d1748a506e76a17996d53

Download Submit
C:\Users\Admin\AppData\Roaming\60CF.437

Filesize
1KB

MD5
b0d7a1fc5a18fcd11188211c2771c5ff

SHA1
a5c911c2b93e7a101e5092fe6ea59198d95397f8

SHA256
2565afdfbda4a7cd1ac108f4c9bdf7c37c416953e2bdff8128fa0d2cf61e76cd

SHA512
02b3276c49bd3e7b6ab4c485fc7ec93ca77de0510d649a4eb9a64a6f3bea28abc0804559b8bec0af652f386d0ded049c59ba4e7542c27771c198545c0a762c50

Download Submit
memory/624-82-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/624-80-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2628-8-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2628-6-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2628-9-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2772-19-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2772-1-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2772-83-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2772-2-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2772-178-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads