cycbot | b706ccbb9fd0401fe3ac0bb6799ca29c031de6eb9c2f859f60442a02e96c8308

General

Target

f65953064573c45a925f00aa50545a71_JaffaCakes118.exe
Size

171KB
MD5

f65953064573c45a925f00aa50545a71
SHA1

5e28cbc7b4d48e2fd529b563964e490bbdd44e61
SHA256

b706ccbb9fd0401fe3ac0bb6799ca29c031de6eb9c2f859f60442a02e96c8308
SHA512

164683d2b8aaa0b7ab939c43fa666acc669efe8c8d6c6743d26780f763a23d48943486d00e8592b8520e2d24981e70716bb5b3a7568ae3d7d0534e9177014813
SSDEEP

3072:/9ocr+PgxoG7R/T4Js8o1xlPU6GYYdNeYT/vYRwxR7QCBZwPPB9RfRn/FDyJ6:/VyGvt20vl6YYdNeWYRwzEXPpjGJ6

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/3004-6-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/2532-15-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/2532-82-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/1592-86-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/2532-200-0x0000000000400000-0x000000000046A000-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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	f65953064573c45a925f00aa50545a71_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 8 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2532-2-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/3004-7-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/3004-6-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2532-15-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2532-82-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/1592-84-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/1592-86-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2532-200-0x0000000000400000-0x000000000046A000-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	f65953064573c45a925f00aa50545a71_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f65953064573c45a925f00aa50545a71_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f65953064573c45a925f00aa50545a71_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2532 wrote to memory of 3004	2532	f65953064573c45a925f00aa50545a71_JaffaCakes118.exe	30
PID 2532 wrote to memory of 3004	2532	f65953064573c45a925f00aa50545a71_JaffaCakes118.exe	30
PID 2532 wrote to memory of 3004	2532	f65953064573c45a925f00aa50545a71_JaffaCakes118.exe	30
PID 2532 wrote to memory of 3004	2532	f65953064573c45a925f00aa50545a71_JaffaCakes118.exe	30
PID 2532 wrote to memory of 1592	2532	f65953064573c45a925f00aa50545a71_JaffaCakes118.exe	33
PID 2532 wrote to memory of 1592	2532	f65953064573c45a925f00aa50545a71_JaffaCakes118.exe	33
PID 2532 wrote to memory of 1592	2532	f65953064573c45a925f00aa50545a71_JaffaCakes118.exe	33
PID 2532 wrote to memory of 1592	2532	f65953064573c45a925f00aa50545a71_JaffaCakes118.exe	33

C:\Users\Admin\AppData\Local\Temp\f65953064573c45a925f00aa50545a71_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f65953064573c45a925f00aa50545a71_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2532
- C:\Users\Admin\AppData\Local\Temp\f65953064573c45a925f00aa50545a71_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\f65953064573c45a925f00aa50545a71_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3004
- C:\Users\Admin\AppData\Local\Temp\f65953064573c45a925f00aa50545a71_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\f65953064573c45a925f00aa50545a71_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1592

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\9F98.797

Filesize
1KB

MD5
a14eaea70abfa8a607b6c5f82388e174

SHA1
6acc96df6afa55b9032d138fbcdf27113c4caf5e

SHA256
22388fb8b8ab2cfc7baaa2b3e3fd919229059e38a483892d391f871efd957b41

SHA512
2290bfffbb29239858e77c966ba8c2140245bee6ff3123617a3e28da5307ab834a20961e1c3fbe7e36f89275ebe10c735a2d324fad9996df2cec9c06a2b3b6a0

Download Submit
C:\Users\Admin\AppData\Roaming\9F98.797

Filesize
600B

MD5
9b26c20115aa9c8915052d8493c974ca

SHA1
1ccdee9377c735d0c89103e295356cd08deff777

SHA256
e7693a70ce1463f9344412c60a622a1829cca5b6fce2312f5049eeefff02f6c3

SHA512
6cacb7fde81dbda98834db31a5c2005ab8d7a2654634b4b2c4ea97e9fa5a09855f40a5818a329e9f28de710b074e786747782b3f4392dbe8e01483f6f32270b3

Download Submit
C:\Users\Admin\AppData\Roaming\9F98.797

Filesize
996B

MD5
d014d8bda014e1c5e305d0fb026e9456

SHA1
c91392752b51c3794410712ad2f1e15d9d530dba

SHA256
35630999c2ceebd82940657c6d6308e33d0b9d89b1c68fa2690fdc82cbe21071

SHA512
002b783f7b7ac8ec1ded15aa9efb6192be25816baaa95b859989e4fb4b51c94ed19f3d861ee23e184dee5e5e31c486ef186c851039e662e4051ed2b1f47aff07

Download Submit
memory/1592-86-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/1592-84-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2532-15-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2532-82-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2532-1-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2532-2-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2532-200-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/3004-5-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/3004-6-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/3004-7-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads