cycbot | 19f2389fdb85aed301d76f4a096931e02f05ce40cea7baad98d8b19a92240799

General

Target

JaffaCakes118_33113fea902553e5867b933e4876a93c.exe
Size

165KB
MD5

33113fea902553e5867b933e4876a93c
SHA1

94d85e74a821cf6403ae99db51cffb761b973a84
SHA256

19f2389fdb85aed301d76f4a096931e02f05ce40cea7baad98d8b19a92240799
SHA512

58a0b9a059b49bf49726c0534680160bc57a81b4faa886b8d0b303eb97422ccecde83f5d8ca2feea1affdd93a92b734cd8f0ce54f7303d23bf0c8c897cf927bd
SSDEEP

3072:KeyENP7FGU0uOU6RBUM9d77HbvstVKNvgl15B3CedTUid94fUG:dNQPuOzH9J7mVKNIdCsN

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/2120-17-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2108-18-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/2108-19-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/332-120-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/332-119-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2108-121-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2108-291-0x0000000000400000-0x0000000000491000-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\\DD4E7\\AAF5E.exe"	JaffaCakes118_33113fea902553e5867b933e4876a93c.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/2108-3-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2120-14-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2120-17-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2120-16-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2108-18-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/2108-19-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/332-120-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/332-119-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2108-121-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2108-291-0x0000000000400000-0x0000000000491000-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_33113fea902553e5867b933e4876a93c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_33113fea902553e5867b933e4876a93c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_33113fea902553e5867b933e4876a93c.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2108 wrote to memory of 2120	2108	JaffaCakes118_33113fea902553e5867b933e4876a93c.exe	30
PID 2108 wrote to memory of 2120	2108	JaffaCakes118_33113fea902553e5867b933e4876a93c.exe	30
PID 2108 wrote to memory of 2120	2108	JaffaCakes118_33113fea902553e5867b933e4876a93c.exe	30
PID 2108 wrote to memory of 2120	2108	JaffaCakes118_33113fea902553e5867b933e4876a93c.exe	30
PID 2108 wrote to memory of 332	2108	JaffaCakes118_33113fea902553e5867b933e4876a93c.exe	33
PID 2108 wrote to memory of 332	2108	JaffaCakes118_33113fea902553e5867b933e4876a93c.exe	33
PID 2108 wrote to memory of 332	2108	JaffaCakes118_33113fea902553e5867b933e4876a93c.exe	33
PID 2108 wrote to memory of 332	2108	JaffaCakes118_33113fea902553e5867b933e4876a93c.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_33113fea902553e5867b933e4876a93c.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_33113fea902553e5867b933e4876a93c.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2108
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_33113fea902553e5867b933e4876a93c.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_33113fea902553e5867b933e4876a93c.exe startC:\Program Files (x86)\LP\5E1D\424.exe%C:\Program Files (x86)\LP\5E1D
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2120
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_33113fea902553e5867b933e4876a93c.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_33113fea902553e5867b933e4876a93c.exe startC:\Program Files (x86)\E7695\lvvm.exe%C:\Program Files (x86)\E7695
  2⤵
  - System Location Discovery: System Language Discovery
  PID:332

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\DD4E7\7695.D4E

Filesize
996B

MD5
c233f024bab6569905b5198eb537d7ea

SHA1
6d4300d9ba04ea3cbb0cfb6263afda915cc7f574

SHA256
f38cfab9933f246fe8255dd0a60e1b2bc21eef2decc0d9cd10fafd39a0f948ca

SHA512
85c731f41b338ec0a38e0d20090cd0d6b1aa6bc1877cfde78622ae6e5bcd212011c85b0f52a3ef984be3745de2097b63e1b398628234a60d50831dd3d126618d

Download Submit
C:\Users\Admin\AppData\Roaming\DD4E7\7695.D4E

Filesize
600B

MD5
d40c5f2b2a024f926d3ea4e3d5cbab77

SHA1
b700e7e145e5d9e0f795b175b5ba8501daf5099d

SHA256
c3f1f2faa3113526905a55481514ef64aca33c1e019ab390e28ddbafc2f856e7

SHA512
db661a3b0bc41e4a18e10d64f17cc120ebb1870fbac7dbc6fe21e66f64845fc9f66711b33af321d4ce238ad0c6f6f3b1c741ab9a3601865beeb4957632b95b5c

Download Submit
C:\Users\Admin\AppData\Roaming\DD4E7\7695.D4E

Filesize
1KB

MD5
2d399f9e6be290a3df26f6a9df315753

SHA1
19fd665b91c6e9c742ea8759ad376feaf2cf58cf

SHA256
861ae56a4f47cbb68e67033dba41a251f49d7971e26ee874387b327d0615e502

SHA512
ed8910c2c5cf112abce5737600c88a4d3d5414ecae73c1d2e2d5eb5c62958595a239b867be1dffe593140519024a554447257638f5cd909e7250e2a1bd80044b

Download Submit
memory/332-119-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/332-120-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/332-117-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2108-121-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2108-19-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2108-18-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2108-0-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2108-3-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2108-2-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2108-291-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2120-16-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2120-17-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2120-14-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads