cycbot | 1e424f2536d03c57ab46b2c3ef5dd0ba885546d8dcafda676b9a73174a9f2763

General

Target

JaffaCakes118_0bf4554992ee0878a8abb67e4677d80c.exe
Size

164KB
MD5

0bf4554992ee0878a8abb67e4677d80c
SHA1

46aefaf1ab4bf380606fb91d52760a3999186c43
SHA256

1e424f2536d03c57ab46b2c3ef5dd0ba885546d8dcafda676b9a73174a9f2763
SHA512

0b2bcd4a61953679f30b19c4e0950c10f85bce93273feadd94e842cb961feb1d7c73ce99644d28109781c7c63e5849de56af89c3f0e9665a0305c3afd1ad795d
SSDEEP

3072:8E6pnXFXE7Nc1ekFPK3GPNltV8AlsaWQPE0taSk5KipEk7YE+ou9BrO:8fn1XEZFsPzXtaAls/qbtQcipEqYdfO

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/2476-16-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2736-17-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/2736-18-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/1696-138-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2736-139-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2736-313-0x0000000000400000-0x0000000000491000-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-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\99797\\1B45C.exe"	JaffaCakes118_0bf4554992ee0878a8abb67e4677d80c.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/2736-3-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2476-14-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2476-16-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2736-17-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/2736-18-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1696-137-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1696-138-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2736-139-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2736-313-0x0000000000400000-0x0000000000491000-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_0bf4554992ee0878a8abb67e4677d80c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_0bf4554992ee0878a8abb67e4677d80c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_0bf4554992ee0878a8abb67e4677d80c.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2736 wrote to memory of 2476	2736	JaffaCakes118_0bf4554992ee0878a8abb67e4677d80c.exe	30
PID 2736 wrote to memory of 2476	2736	JaffaCakes118_0bf4554992ee0878a8abb67e4677d80c.exe	30
PID 2736 wrote to memory of 2476	2736	JaffaCakes118_0bf4554992ee0878a8abb67e4677d80c.exe	30
PID 2736 wrote to memory of 2476	2736	JaffaCakes118_0bf4554992ee0878a8abb67e4677d80c.exe	30
PID 2736 wrote to memory of 1696	2736	JaffaCakes118_0bf4554992ee0878a8abb67e4677d80c.exe	32
PID 2736 wrote to memory of 1696	2736	JaffaCakes118_0bf4554992ee0878a8abb67e4677d80c.exe	32
PID 2736 wrote to memory of 1696	2736	JaffaCakes118_0bf4554992ee0878a8abb67e4677d80c.exe	32
PID 2736 wrote to memory of 1696	2736	JaffaCakes118_0bf4554992ee0878a8abb67e4677d80c.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0bf4554992ee0878a8abb67e4677d80c.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0bf4554992ee0878a8abb67e4677d80c.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2736
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0bf4554992ee0878a8abb67e4677d80c.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0bf4554992ee0878a8abb67e4677d80c.exe startC:\Program Files (x86)\LP\5CA9\4D3.exe%C:\Program Files (x86)\LP\5CA9
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2476
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0bf4554992ee0878a8abb67e4677d80c.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0bf4554992ee0878a8abb67e4677d80c.exe startC:\Program Files (x86)\9747B\lvvm.exe%C:\Program Files (x86)\9747B
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1696

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\99797\747B.979

Filesize
600B

MD5
2ef7288cacaf031b15a89592af280be0

SHA1
36b7702ac281392ec3811b196ea5365193cd0863

SHA256
cbc10d4ea6ac80770ec6bc78bc5fe5970bf937a8e6c95137e07552ba1b2c501e

SHA512
e18a42bf276e262cd5667c58cb0e793fdfdece2da102770553c463b38898cb0c12ee5f0d5aa8f49bd27d895758021fe488634ff9376483357458e46cfc3deaac

Download Submit
C:\Users\Admin\AppData\Roaming\99797\747B.979

Filesize
996B

MD5
2aedb8be1aa6e7a3cc79e9940159f9a5

SHA1
3c0b9caadc44ec901f9b7d1a3dad522df1083df8

SHA256
b8d9dcbcf1987448b320114c6b0febc57d171bccbc2d1ce37f8d2d5ba5e9fd71

SHA512
0aae7f24e1ccd60540e9611f9312db9bd5ec30962e993d10b4eae3bfbf84797e89c465368bfba44d533947b816e2472513a14076d8ba19e0e7f99dd280f83945

Download Submit
C:\Users\Admin\AppData\Roaming\99797\747B.979

Filesize
1KB

MD5
436e2be3beeabc5473ffa2d5c381a4e2

SHA1
6cca182419586202cc09cc45a3ae119dffc8c36c

SHA256
6cdac1aaab79262e90c68f615957f5a8149e24ec0075dcfeb6d87c3d88ac7e4e

SHA512
782eabd83cde6325732ae8395e555bb6a391ae7d43545d657f6ddedbb72aa5113c7d21ad569d25f7509f95e9354ed22eb0a57eebd4b1273b9451ca353a9bf423

Download Submit
memory/1696-138-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1696-137-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2476-14-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2476-16-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2736-17-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2736-18-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2736-0-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2736-139-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2736-3-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2736-2-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2736-313-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads