cycbot | 273e6e9469748b89fdcf45d11d95ccaa31775c639b6ced54cd0756e382480018

General

Target

JaffaCakes118_2212e1e483f4db62f625f8abfeb4c942.exe
Size

165KB
MD5

2212e1e483f4db62f625f8abfeb4c942
SHA1

c4671dcdf9e7a1348f9504fb6bf6a13f099734f7
SHA256

273e6e9469748b89fdcf45d11d95ccaa31775c639b6ced54cd0756e382480018
SHA512

818e1687a498f833b7fd29a73e4e212eeb989fc1b76bb82e2d92259414635000f4e264e7792b1498b1adba5b79d26d2c5e61a811a9517742291c044393bfd525
SSDEEP

3072:6o53+GnxSJhBpQ11hWn7qnS6VtaC6zS59RKQLlTPub8SdXkeK/GnzonfIf:UGUlWon7qSgNRVFuMnfIf

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/2388-16-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2252-17-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/2252-18-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/1424-142-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2252-143-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2252-305-0x0000000000400000-0x0000000000490000-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\\7B2FD\\7D81A.exe"	JaffaCakes118_2212e1e483f4db62f625f8abfeb4c942.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 10 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2252-3-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2388-15-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2388-14-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2388-16-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2252-17-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/2252-18-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/1424-141-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/1424-142-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2252-143-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2252-305-0x0000000000400000-0x0000000000490000-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_2212e1e483f4db62f625f8abfeb4c942.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_2212e1e483f4db62f625f8abfeb4c942.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_2212e1e483f4db62f625f8abfeb4c942.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2252 wrote to memory of 2388	2252	JaffaCakes118_2212e1e483f4db62f625f8abfeb4c942.exe	31
PID 2252 wrote to memory of 2388	2252	JaffaCakes118_2212e1e483f4db62f625f8abfeb4c942.exe	31
PID 2252 wrote to memory of 2388	2252	JaffaCakes118_2212e1e483f4db62f625f8abfeb4c942.exe	31
PID 2252 wrote to memory of 2388	2252	JaffaCakes118_2212e1e483f4db62f625f8abfeb4c942.exe	31
PID 2252 wrote to memory of 1424	2252	JaffaCakes118_2212e1e483f4db62f625f8abfeb4c942.exe	33
PID 2252 wrote to memory of 1424	2252	JaffaCakes118_2212e1e483f4db62f625f8abfeb4c942.exe	33
PID 2252 wrote to memory of 1424	2252	JaffaCakes118_2212e1e483f4db62f625f8abfeb4c942.exe	33
PID 2252 wrote to memory of 1424	2252	JaffaCakes118_2212e1e483f4db62f625f8abfeb4c942.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2212e1e483f4db62f625f8abfeb4c942.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2212e1e483f4db62f625f8abfeb4c942.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2252
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2212e1e483f4db62f625f8abfeb4c942.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2212e1e483f4db62f625f8abfeb4c942.exe startC:\Program Files (x86)\LP\1A37\95C.exe%C:\Program Files (x86)\LP\1A37
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2388
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2212e1e483f4db62f625f8abfeb4c942.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2212e1e483f4db62f625f8abfeb4c942.exe startC:\Program Files (x86)\FDAE0\lvvm.exe%C:\Program Files (x86)\FDAE0
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1424

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\7B2FD\DAE0.B2F

Filesize
996B

MD5
7afca707e9649d7a1304f6d9388c2eb6

SHA1
c965e356612eee47056cc5e2d7329324c4765882

SHA256
f1079d8695d0d0655c086084e91670c480a3e52d0e4604d2ad765e2c2834d76a

SHA512
52d98e729def60429f5f08d2df52b269ca560ffadf63281c0dee3aa5967d787c858c9ceaf88d1518c0719758aaed9f6278ea97bf12fa69dfedaec1ebd6626f44

Download Submit
C:\Users\Admin\AppData\Roaming\7B2FD\DAE0.B2F

Filesize
600B

MD5
2190d98e9da1c50b02e6341805693ad1

SHA1
43ac147e0f24344983c7d39391c5710ca066f0bd

SHA256
71547ebf2b46becf316bd1b794126c355930eb18257cbad2aba347749d699244

SHA512
ae3abcd8eafa929560769c7b0a85a5c7c462fec55ecb329cef8d76f7558601d40658588a6acf9ddefca60a5a394b6b682d43c72e39191f4da2e42f9495f49067

Download Submit
C:\Users\Admin\AppData\Roaming\7B2FD\DAE0.B2F

Filesize
1KB

MD5
a8e935099cc380e0b32513aa2c9e5a9e

SHA1
06f83a6464a6265c99a03171597fa678c78ae2a5

SHA256
17986b261dfe378bd5e3c178ee9380b0bb461d34aef2513f3224ddeaa4053aec

SHA512
abb007fcc2589c28b1378ff62dbd9d868d714619e4c912bce5b54c4dea6b22f3b7978873f1577ec1b89e8d473d80616b6dab437e802922c2edc3f59f10001c2c

Download Submit
memory/1424-142-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/1424-141-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2252-17-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2252-0-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2252-18-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2252-143-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2252-2-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2252-3-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2252-305-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2388-16-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2388-14-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2388-15-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads