cycbot | 1796475e197aacc87e0a42df8a1d58340fc8f43105f4065cab277ea3502b6af5

General

Target

JaffaCakes118_4f78e6907967c6f858a1d44ab0c122bd.exe
Size

163KB
MD5

4f78e6907967c6f858a1d44ab0c122bd
SHA1

54e83b153865abae6b8210ab43843eb8f2928aee
SHA256

1796475e197aacc87e0a42df8a1d58340fc8f43105f4065cab277ea3502b6af5
SHA512

f1f43199cc776a1e0571170683ed62162a20712c7c36a28298b086a7d38871b43a9add5bc067318ad2a0284a7f2400b17012f1f5b1be9cc6fca6c4f0acb4af89
SSDEEP

3072:sG4dtwkbMeTx61UPk/jPU5Cycjw2fmafkex8enPAZs7MYaYECBN8OPw3q7F+sWiU:IwkEx/js5SwqmGke9AZMaKN8OwqjJaxb

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 7 IoCs

Cycbot is a backdoor and trojan written in C++.

resource	yara_rule
behavioral1/memory/2932-15-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2376-16-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/2376-17-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2376-79-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/1664-81-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/1664-83-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2376-190-0x0000000000400000-0x0000000000491000-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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\A36F6\\1F0DC.exe"	JaffaCakes118_4f78e6907967c6f858a1d44ab0c122bd.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/2376-2-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2932-15-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2932-14-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2376-16-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/2376-17-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2376-79-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1664-81-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1664-83-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2376-190-0x0000000000400000-0x0000000000491000-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	JaffaCakes118_4f78e6907967c6f858a1d44ab0c122bd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4f78e6907967c6f858a1d44ab0c122bd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4f78e6907967c6f858a1d44ab0c122bd.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2376 wrote to memory of 2932	2376	JaffaCakes118_4f78e6907967c6f858a1d44ab0c122bd.exe	30
PID 2376 wrote to memory of 2932	2376	JaffaCakes118_4f78e6907967c6f858a1d44ab0c122bd.exe	30
PID 2376 wrote to memory of 2932	2376	JaffaCakes118_4f78e6907967c6f858a1d44ab0c122bd.exe	30
PID 2376 wrote to memory of 2932	2376	JaffaCakes118_4f78e6907967c6f858a1d44ab0c122bd.exe	30
PID 2376 wrote to memory of 1664	2376	JaffaCakes118_4f78e6907967c6f858a1d44ab0c122bd.exe	33
PID 2376 wrote to memory of 1664	2376	JaffaCakes118_4f78e6907967c6f858a1d44ab0c122bd.exe	33
PID 2376 wrote to memory of 1664	2376	JaffaCakes118_4f78e6907967c6f858a1d44ab0c122bd.exe	33
PID 2376 wrote to memory of 1664	2376	JaffaCakes118_4f78e6907967c6f858a1d44ab0c122bd.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4f78e6907967c6f858a1d44ab0c122bd.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4f78e6907967c6f858a1d44ab0c122bd.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2376
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4f78e6907967c6f858a1d44ab0c122bd.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4f78e6907967c6f858a1d44ab0c122bd.exe startC:\Program Files (x86)\LP\DCBA\BDB.exe%C:\Program Files (x86)\LP\DCBA
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2932
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4f78e6907967c6f858a1d44ab0c122bd.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4f78e6907967c6f858a1d44ab0c122bd.exe startC:\Program Files (x86)\F6DA2\lvvm.exe%C:\Program Files (x86)\F6DA2
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1664

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\A36F6\6DA2.36F

Filesize
1KB

MD5
98913826a69b186f98fcdb46ff3031a4

SHA1
7173ef7a5c320f18debeeae1c5b623593fcf6ea0

SHA256
eace0b965cd84554abbf8b8bced6bb68ee71dedd40a35779f7f021f11831d859

SHA512
da6cfbae48cf20f2fc6eb7ce03ee77872a7d47fb53ca963840ff7d0cf223c333310adcb94ce864d34ed2da229954778131f131e6b7844643a5be65b6625dc7f5

Download Submit
C:\Users\Admin\AppData\Roaming\A36F6\6DA2.36F

Filesize
600B

MD5
fb6a22a1a708b9811dbb1b311c5f0686

SHA1
4e38d2e88153648698e6e5068bb798fc5f461026

SHA256
d10058cf2e074ce1ad07ae0b77a4fbea117f08213c83bdee05b9854fe0fe18ee

SHA512
64e54404e3f13b806f324c4ad08c487746d4891a63270e2252472a64626b2892fc8fb0e9fed0150ae0df46ba6757241757a3bfbeee2be3dc32d235803c384507

Download Submit
C:\Users\Admin\AppData\Roaming\A36F6\6DA2.36F

Filesize
996B

MD5
812731b7e8d74460f1373c7873c2e2a6

SHA1
412e03b997ccdbc96a14cffeee3d4095fa84573d

SHA256
718f7ea1aea0c52b24daae14f0fbacd52d8ef3ab0734a0e3269e60815bc4ef6f

SHA512
f30662c86d8a73931b347e72d7f55061a762978311c06dded51cc8880c99f1e5120b77aa835f490824944303406a201bf4b079777f09c32b12ac7c82bfaf122f

Download Submit
memory/1664-83-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1664-81-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2376-17-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2376-1-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2376-16-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2376-79-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2376-2-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2376-190-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2932-14-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2932-15-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2932-12-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads