cycbot | 67bc474fba12625f5fa89472f784d61d3fc233eab98227f6d1c54921cc18204e

General

Target

d05b7c90ed2ae56fa73cb421900ed293_JaffaCakes118.exe
Size

175KB
MD5

d05b7c90ed2ae56fa73cb421900ed293
SHA1

ba98ec9648bda5f3ed09ded67a1ef4c149c121da
SHA256

67bc474fba12625f5fa89472f784d61d3fc233eab98227f6d1c54921cc18204e
SHA512

53f5b8c34a0d7205ea91736708986a01ed2379c7c36ddc045e71b36e14407cb57a3e7dbdc5443d7a521db9fca7601872ed25522ab6cd648dda9610dcac854a99
SSDEEP

3072:XdF23o/kDbA3PMS6zknBXKr1lbQkpEFxwOMkHWKcrE+uTWTH4Cv:Ng3o8DblzknAr1lbd0w4Zj+r

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/2400-14-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/2400-13-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/2516-15-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/2672-78-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/2516-141-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/2516-153-0x0000000000400000-0x000000000046E000-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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	d05b7c90ed2ae56fa73cb421900ed293_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 8 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2516-2-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2400-14-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2400-13-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2516-15-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2672-78-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2672-77-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2516-141-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2516-153-0x0000000000400000-0x000000000046E000-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	d05b7c90ed2ae56fa73cb421900ed293_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d05b7c90ed2ae56fa73cb421900ed293_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d05b7c90ed2ae56fa73cb421900ed293_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2516 wrote to memory of 2400	2516	d05b7c90ed2ae56fa73cb421900ed293_JaffaCakes118.exe	30
PID 2516 wrote to memory of 2400	2516	d05b7c90ed2ae56fa73cb421900ed293_JaffaCakes118.exe	30
PID 2516 wrote to memory of 2400	2516	d05b7c90ed2ae56fa73cb421900ed293_JaffaCakes118.exe	30
PID 2516 wrote to memory of 2400	2516	d05b7c90ed2ae56fa73cb421900ed293_JaffaCakes118.exe	30
PID 2516 wrote to memory of 2672	2516	d05b7c90ed2ae56fa73cb421900ed293_JaffaCakes118.exe	32
PID 2516 wrote to memory of 2672	2516	d05b7c90ed2ae56fa73cb421900ed293_JaffaCakes118.exe	32
PID 2516 wrote to memory of 2672	2516	d05b7c90ed2ae56fa73cb421900ed293_JaffaCakes118.exe	32
PID 2516 wrote to memory of 2672	2516	d05b7c90ed2ae56fa73cb421900ed293_JaffaCakes118.exe	32

C:\Users\Admin\AppData\Local\Temp\d05b7c90ed2ae56fa73cb421900ed293_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d05b7c90ed2ae56fa73cb421900ed293_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2516
- C:\Users\Admin\AppData\Local\Temp\d05b7c90ed2ae56fa73cb421900ed293_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\d05b7c90ed2ae56fa73cb421900ed293_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2400
- C:\Users\Admin\AppData\Local\Temp\d05b7c90ed2ae56fa73cb421900ed293_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\d05b7c90ed2ae56fa73cb421900ed293_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2672

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\9167.9C9

Filesize
1KB

MD5
f51093e44803c0200f6b1a3d434884c5

SHA1
925c2788f0ab29da6ab79cbcead21e933de3e873

SHA256
23eba37ee50ab715614e4cc56dadf5be9482d271aa2a02b9e04ee4a867db61db

SHA512
187c23cc3743fe44947d6f667c6f8c45081c39a5eb87c6b9a7807051b9b3eef85aeeeb4ee8a107f538eeea668a91ee3c22247c0593cce8338955fe9a786d6351

Download Submit
C:\Users\Admin\AppData\Roaming\9167.9C9

Filesize
600B

MD5
519fbe8988b8dfe85602927d2d453352

SHA1
ab95bd61ff43ee0c264ea2521749cb2202e914be

SHA256
a7195780defdc4d8f7be6d955eec17783cee1cc1e6457a6c7ceabbc790ec7f81

SHA512
18acd4be8eff26cee22cff28406a916c5dd6507920900cf55088c70b732e004322716f9b8b94e55f5e204e9a2faad2169fb435a48272aad67f4e57a7a80d8e7b

Download Submit
C:\Users\Admin\AppData\Roaming\9167.9C9

Filesize
996B

MD5
c512364a7ec96fdb441b623cd4f8ab01

SHA1
cd585c175c27c561ea1870135de710f19fcf69ea

SHA256
596ce5d5727f6acafeb965d1808f8febf59072ae7e31fb56b0ff5ff0cb5dc3b9

SHA512
868dadfbb0b69faf0c354248737e65390e179f62e743b466f9ff2a603c33bb00a8d5c9f7fc23b1ead8b1af5035d98a737a2a8eed542ea6551611894647d1a982

Download Submit
memory/2400-13-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2400-12-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2400-14-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2516-15-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2516-1-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2516-141-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2516-2-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2516-153-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2672-78-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2672-77-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads