cycbot | 3711e3c5bf3dd529479429acad995e64da22d48883296ca1b725c70f7019017f

General

Target

JaffaCakes118_266ce7528e58667cd4d4478b0010ac7b.exe
Size

193KB
MD5

266ce7528e58667cd4d4478b0010ac7b
SHA1

3d639a7a2474341466b9e45745c7b79d3084a829
SHA256

3711e3c5bf3dd529479429acad995e64da22d48883296ca1b725c70f7019017f
SHA512

e79134f00b6bc726129960aeb616c60b2189427e4bcef5effa0454692d66695f08a6f29cca5e2a2d850cdcb6a486ee58547e9e1c7cc02500470957b4b7b662f3
SSDEEP

6144:TuzCWU1+yCYOvk25uHhh4Pf01+UDd46lWc:L1+ymvDQBhws1+2d4

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/2644-12-0x0000000000400000-0x0000000000470000-memory.dmp	family_cycbot
behavioral1/memory/2644-14-0x0000000000400000-0x0000000000470000-memory.dmp	family_cycbot
behavioral1/memory/2692-15-0x0000000000400000-0x0000000000470000-memory.dmp	family_cycbot
behavioral1/memory/844-92-0x0000000000400000-0x0000000000470000-memory.dmp	family_cycbot
behavioral1/memory/2692-93-0x0000000000400000-0x0000000000470000-memory.dmp	family_cycbot
behavioral1/memory/2692-166-0x0000000000400000-0x0000000000470000-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-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_266ce7528e58667cd4d4478b0010ac7b.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/2692-2-0x0000000000400000-0x0000000000470000-memory.dmp	upx
behavioral1/memory/2644-12-0x0000000000400000-0x0000000000470000-memory.dmp	upx
behavioral1/memory/2644-14-0x0000000000400000-0x0000000000470000-memory.dmp	upx
behavioral1/memory/2692-15-0x0000000000400000-0x0000000000470000-memory.dmp	upx
behavioral1/memory/844-90-0x0000000000400000-0x0000000000470000-memory.dmp	upx
behavioral1/memory/844-92-0x0000000000400000-0x0000000000470000-memory.dmp	upx
behavioral1/memory/2692-93-0x0000000000400000-0x0000000000470000-memory.dmp	upx
behavioral1/memory/2692-166-0x0000000000400000-0x0000000000470000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 1 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_266ce7528e58667cd4d4478b0010ac7b.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2692 wrote to memory of 2644	2692	JaffaCakes118_266ce7528e58667cd4d4478b0010ac7b.exe	28
PID 2692 wrote to memory of 2644	2692	JaffaCakes118_266ce7528e58667cd4d4478b0010ac7b.exe	28
PID 2692 wrote to memory of 2644	2692	JaffaCakes118_266ce7528e58667cd4d4478b0010ac7b.exe	28
PID 2692 wrote to memory of 2644	2692	JaffaCakes118_266ce7528e58667cd4d4478b0010ac7b.exe	28
PID 2692 wrote to memory of 844	2692	JaffaCakes118_266ce7528e58667cd4d4478b0010ac7b.exe	30
PID 2692 wrote to memory of 844	2692	JaffaCakes118_266ce7528e58667cd4d4478b0010ac7b.exe	30
PID 2692 wrote to memory of 844	2692	JaffaCakes118_266ce7528e58667cd4d4478b0010ac7b.exe	30
PID 2692 wrote to memory of 844	2692	JaffaCakes118_266ce7528e58667cd4d4478b0010ac7b.exe	30

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_266ce7528e58667cd4d4478b0010ac7b.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_266ce7528e58667cd4d4478b0010ac7b.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2692
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_266ce7528e58667cd4d4478b0010ac7b.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_266ce7528e58667cd4d4478b0010ac7b.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  PID:2644
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_266ce7528e58667cd4d4478b0010ac7b.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_266ce7528e58667cd4d4478b0010ac7b.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  PID:844

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\A4F6.63C

Filesize
1KB

MD5
ce4d4f3221adfc3ad9d9fa3fb3d3d6d3

SHA1
beb8f0b92e031f60f8eaf3c9a488a92f13ce6b2b

SHA256
4fddeda04dc57179037400d9a1c760c231d4db811d6e7416efa2acf15bfadd2f

SHA512
2154f22bd647136ecf0be17a677d88f230ebfea6284d578c818a9d7f84d8ea312ffee730fd541c3d29b5f7706fd99ca1985182c727123e78463cbf5041a6a6b9

Download Submit
C:\Users\Admin\AppData\Roaming\A4F6.63C

Filesize
600B

MD5
e7216de400ea31ab16db4f2468ff791b

SHA1
2b53b8550ea67b43765d04255db2b9b56ef7db1e

SHA256
9f71863f062927ce8fe98433d26f952b930b52451579acba1705e4aba3739fcc

SHA512
dfe7864c827c6c77302bfe0091290beb406faecd56ff959dd41a3adbe8577800b3d958aebacfdecf7a897df7821d9e773c4a78724f90a9f94fa01f3d5914f5a7

Download Submit
C:\Users\Admin\AppData\Roaming\A4F6.63C

Filesize
996B

MD5
57a6bfffef76b974dedb8328f67923b7

SHA1
d35db0fc313e630bbb50ddf4edc0a870b1784556

SHA256
66166657b7b2a0b8bbc0bed575531bf61fdd68bc321e8565a32e02294b0eb8f0

SHA512
5b1b70ff9ea092ce5f8f13f6fc086d3a06467b69a1e6ab31e4d207798bb3785414b46d505d9316c38bc8fa99a2ab3678531c48542b7f8f867aae154f90c241bc

Download Submit
memory/844-90-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/844-92-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2644-12-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2644-14-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2692-1-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2692-2-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2692-15-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2692-93-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2692-166-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads