cycbot | 580ffa3d517ceb84f517877492ff44416ba1418d746fe676fb7b7ddb97b5e2a6

General

Target

d8d429f967e2119013210ef155571d1a_JaffaCakes118.exe
Size

172KB
MD5

d8d429f967e2119013210ef155571d1a
SHA1

1f04289404930e79583345fd555d36f54d13e709
SHA256

580ffa3d517ceb84f517877492ff44416ba1418d746fe676fb7b7ddb97b5e2a6
SHA512

9109f865dac4310bc33fdf6fa6c098829334a642638f0031041e551f40d3240fac4c63f353c92372a662985231cccc6f235eb452508c9f601df0f5e5034afb34
SSDEEP

3072:Pgqw8FIL6q4hrpvB5KMcpnK2W5HoA9jtxG6fgYA31UBrKws:Pgqw8FIL6nxdKM2KfHHjnIxOBDs

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/2680-15-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2524-16-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2524-17-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/3032-129-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2524-130-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2524-284-0x0000000000400000-0x0000000000491000-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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\511E1\\88CDB.exe"	d8d429f967e2119013210ef155571d1a_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 10 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2524-2-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2680-15-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2680-13-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2524-16-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2524-17-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/2680-125-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/3032-129-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/3032-128-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2524-130-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2524-284-0x0000000000400000-0x0000000000491000-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	d8d429f967e2119013210ef155571d1a_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2524 wrote to memory of 2680	2524	d8d429f967e2119013210ef155571d1a_JaffaCakes118.exe	29
PID 2524 wrote to memory of 2680	2524	d8d429f967e2119013210ef155571d1a_JaffaCakes118.exe	29
PID 2524 wrote to memory of 2680	2524	d8d429f967e2119013210ef155571d1a_JaffaCakes118.exe	29
PID 2524 wrote to memory of 2680	2524	d8d429f967e2119013210ef155571d1a_JaffaCakes118.exe	29
PID 2524 wrote to memory of 3032	2524	d8d429f967e2119013210ef155571d1a_JaffaCakes118.exe	31
PID 2524 wrote to memory of 3032	2524	d8d429f967e2119013210ef155571d1a_JaffaCakes118.exe	31
PID 2524 wrote to memory of 3032	2524	d8d429f967e2119013210ef155571d1a_JaffaCakes118.exe	31
PID 2524 wrote to memory of 3032	2524	d8d429f967e2119013210ef155571d1a_JaffaCakes118.exe	31

C:\Users\Admin\AppData\Local\Temp\d8d429f967e2119013210ef155571d1a_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d8d429f967e2119013210ef155571d1a_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2524
- C:\Users\Admin\AppData\Local\Temp\d8d429f967e2119013210ef155571d1a_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\d8d429f967e2119013210ef155571d1a_JaffaCakes118.exe startC:\Program Files (x86)\LP\DB55\2AC.exe%C:\Program Files (x86)\LP\DB55
  2⤵
  PID:2680
- C:\Users\Admin\AppData\Local\Temp\d8d429f967e2119013210ef155571d1a_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\d8d429f967e2119013210ef155571d1a_JaffaCakes118.exe startC:\Program Files (x86)\E1717\lvvm.exe%C:\Program Files (x86)\E1717
  2⤵
  PID:3032

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\511E1\1717.11E

Filesize
996B

MD5
4a36ddd00e73d1d512452f5ff3c334bd

SHA1
56636f5fbd0a9ae37550035518bdcc80b7c70569

SHA256
164d35ca2d9ac416d68154e3e60ca416a99c64aae55651d99d8989a70f862a06

SHA512
479ec900c7953276f74c2b0ff35a0d6b512b4974fbb9afeae1dc51e5034ef660e692d350df905749c317853c386efe4919b8e168bb2e85673f007f4459cb0dd7

Download Submit
C:\Users\Admin\AppData\Roaming\511E1\1717.11E

Filesize
600B

MD5
2b5367997c5ae4561db13482b47090a6

SHA1
ee1dd1f755516270cd9e04f7ee070d96557ff026

SHA256
e4ed260b5831735a5ba668d41818cc73c00ab365d68ed09926369c9078de3a0b

SHA512
d82226c753b633e784413ec869c28e4f373adcf1f9e2b85b980844fa5d819b2c77c0452abda3d775bffc3931b3a3d87139a8290cc8a0d2a536a8ce749328f735

Download Submit
C:\Users\Admin\AppData\Roaming\511E1\1717.11E

Filesize
1KB

MD5
5b70aff34571af49f6f18629c92a81ac

SHA1
3e45f46771310a3a0e5e0d4719f20d9bca26edad

SHA256
f9ef51cbcdf30ba5b53e7cba458e2ef5cc878e73e504f9ceb8957f31059683f3

SHA512
2606ed8a1f9888619220915b7e923859b8334d7cdc62bcb57de25340e549dfeb8c22faafdea28260b0ad00dff3c46ff7b09b102d6b37299907d870333a55a5b9

Download Submit
C:\Users\Admin\AppData\Roaming\511E1\1717.11E

Filesize
300B

MD5
969b0b8790f65c81f452cc514f1a99a0

SHA1
ad486affff2f0825a25a5646907e1117c78613be

SHA256
e28f8c7478dd2d00dfd6a088a4ac45800df85ccd33f656adec25cf6e591ac3cf

SHA512
f8ef0624fb8f9d54ac6b21a820d2ee13b486456e83daaaa9ffe94a9cdcbe4a593f02c61d26919300be0ac1043c055089c81dadf53f92528ddbf845b3839fbd8a

Download Submit
memory/2524-130-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2524-16-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2524-17-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2524-1-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2524-2-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2524-284-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2680-13-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2680-15-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2680-125-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2680-12-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3032-129-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3032-128-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads