cycbot | 6040852a791234b018bccf9276763e3ba3db726e98156b4b2a318a10aed74f11

General

Target

ddfb85764d24d7a35245c9ef639cc366_JaffaCakes118.exe
Size

168KB
MD5

ddfb85764d24d7a35245c9ef639cc366
SHA1

5141c6ed42f0fdd693876577ba49f0856c484d08
SHA256

6040852a791234b018bccf9276763e3ba3db726e98156b4b2a318a10aed74f11
SHA512

67c89719b92f8b2c2c191ac612a3415613a26e22f92b07e980a4e8cefa6accf9d5067c3e7b13a340806ffa2264f5586d07c5049f3b457227470a82e29945063d
SSDEEP

3072:rD9aoju4GJnPRsWGTuTO8D7ZTBvYZgnpHphHkRaJB1P+76h8y7hm5D1muwGn/aDm:H9aqG5psjTuTFqZgnBcAyy7e1b3e3C3t

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/2080-15-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/1800-16-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/1800-17-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/1800-83-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2192-87-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/1800-188-0x0000000000400000-0x0000000000491000-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-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\C8B22\\94FC8.exe"	ddfb85764d24d7a35245c9ef639cc366_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

resource	yara_rule
behavioral1/memory/1800-2-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2080-13-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2080-15-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1800-16-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/1800-17-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1800-83-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2192-85-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2192-87-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1800-188-0x0000000000400000-0x0000000000491000-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	ddfb85764d24d7a35245c9ef639cc366_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ddfb85764d24d7a35245c9ef639cc366_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ddfb85764d24d7a35245c9ef639cc366_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1800 wrote to memory of 2080	1800	ddfb85764d24d7a35245c9ef639cc366_JaffaCakes118.exe	31
PID 1800 wrote to memory of 2080	1800	ddfb85764d24d7a35245c9ef639cc366_JaffaCakes118.exe	31
PID 1800 wrote to memory of 2080	1800	ddfb85764d24d7a35245c9ef639cc366_JaffaCakes118.exe	31
PID 1800 wrote to memory of 2080	1800	ddfb85764d24d7a35245c9ef639cc366_JaffaCakes118.exe	31
PID 1800 wrote to memory of 2192	1800	ddfb85764d24d7a35245c9ef639cc366_JaffaCakes118.exe	33
PID 1800 wrote to memory of 2192	1800	ddfb85764d24d7a35245c9ef639cc366_JaffaCakes118.exe	33
PID 1800 wrote to memory of 2192	1800	ddfb85764d24d7a35245c9ef639cc366_JaffaCakes118.exe	33
PID 1800 wrote to memory of 2192	1800	ddfb85764d24d7a35245c9ef639cc366_JaffaCakes118.exe	33

C:\Users\Admin\AppData\Local\Temp\ddfb85764d24d7a35245c9ef639cc366_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ddfb85764d24d7a35245c9ef639cc366_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1800
- C:\Users\Admin\AppData\Local\Temp\ddfb85764d24d7a35245c9ef639cc366_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\ddfb85764d24d7a35245c9ef639cc366_JaffaCakes118.exe startC:\Program Files (x86)\LP\C88C\747.exe%C:\Program Files (x86)\LP\C88C
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2080
- C:\Users\Admin\AppData\Local\Temp\ddfb85764d24d7a35245c9ef639cc366_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\ddfb85764d24d7a35245c9ef639cc366_JaffaCakes118.exe startC:\Program Files (x86)\22FB1\lvvm.exe%C:\Program Files (x86)\22FB1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2192

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\C8B22\2FB1.8B2

Filesize
1KB

MD5
7b4c174c096f4638f5700aab661908bf

SHA1
4bf43555a1bf35c90a4f9d71238f56246876ee6d

SHA256
8f2b7982b1850e54c96cd8145c70e218113acd77e62ff5c752cdb72ced4cd717

SHA512
c8047834d19ac601cfae80f87c9659aade594e6eba04a91b929ee23325583f873e305cc08db59cdc9d46274952ed7a9807448ff3f4a8fc10a3f5bd0c455f8235

Download Submit
C:\Users\Admin\AppData\Roaming\C8B22\2FB1.8B2

Filesize
600B

MD5
052b547ab17ea61131afeb215e3ae54a

SHA1
2050c830b732f3669b3664aedfdb586e2e34bc3a

SHA256
40a2b630633cb778bae58a8ad016ac19e765c0110d957e3f54ab2c50006d4890

SHA512
03a6d3a58d419910ce063fbe2c9f7c8f66cf6fcd48ee223b841c65196979f2de8827c500f14d1177fd077e5c738937644b9e1a93a384771e3d4dfec73dd2ea02

Download Submit
C:\Users\Admin\AppData\Roaming\C8B22\2FB1.8B2

Filesize
996B

MD5
210ac384b12fc004558fd40404bb221b

SHA1
149ff0e34f6a87f79c59ea34c74ab5e618dc1528

SHA256
0a86f6de7978daf96756fa68c44099dd840a827e1f49cd313a495fd5313e288f

SHA512
b0db4720861bb7d5173917c833062297b30a61edef96bb0406430f868e7aa837489f5d7dac9e589aaed7ce085e366982ea01ebb208790bba902cb89ecac15f11

Download Submit
memory/1800-2-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1800-188-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1800-1-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/1800-16-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/1800-17-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1800-83-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2080-13-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2080-15-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2080-12-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2192-87-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2192-85-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads