cycbot | b5bcc79a7899a7d029b520f688129e445de66788bed2e82f7b1ef5f3303f7f41

General

Target

eac9de824dd525be6fe5ecf0e46e90f6_JaffaCakes118.exe
Size

177KB
MD5

eac9de824dd525be6fe5ecf0e46e90f6
SHA1

052dd575c5e17edfe7dd627c87d082f4868227d6
SHA256

b5bcc79a7899a7d029b520f688129e445de66788bed2e82f7b1ef5f3303f7f41
SHA512

6bec58c5acaa9b0f8a243d7f6e3d4452d8045f59dd7c52e24d6d41280c21bb00934ef16075c713ce6f0ef6535b4e6833bef271f8fb866214302ffeb3d1b09571
SSDEEP

3072:xOVEDH7Mn9qnL6Mb/DE+nE3CEhjBi7OxDYqMTHkSzG3:sVKgnQnL6eDPmCEBBixHTHfG3

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/2156-6-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/2156-8-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/2516-16-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/812-85-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/2516-86-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/2516-198-0x0000000000400000-0x000000000046A000-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\\dwm.exe"	eac9de824dd525be6fe5ecf0e46e90f6_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 9 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2516-2-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2156-5-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2156-6-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2156-8-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2516-16-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/812-85-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/812-84-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2516-86-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2516-198-0x0000000000400000-0x000000000046A000-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	eac9de824dd525be6fe5ecf0e46e90f6_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	eac9de824dd525be6fe5ecf0e46e90f6_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	eac9de824dd525be6fe5ecf0e46e90f6_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2516 wrote to memory of 2156	2516	eac9de824dd525be6fe5ecf0e46e90f6_JaffaCakes118.exe	30
PID 2516 wrote to memory of 2156	2516	eac9de824dd525be6fe5ecf0e46e90f6_JaffaCakes118.exe	30
PID 2516 wrote to memory of 2156	2516	eac9de824dd525be6fe5ecf0e46e90f6_JaffaCakes118.exe	30
PID 2516 wrote to memory of 2156	2516	eac9de824dd525be6fe5ecf0e46e90f6_JaffaCakes118.exe	30
PID 2516 wrote to memory of 812	2516	eac9de824dd525be6fe5ecf0e46e90f6_JaffaCakes118.exe	33
PID 2516 wrote to memory of 812	2516	eac9de824dd525be6fe5ecf0e46e90f6_JaffaCakes118.exe	33
PID 2516 wrote to memory of 812	2516	eac9de824dd525be6fe5ecf0e46e90f6_JaffaCakes118.exe	33
PID 2516 wrote to memory of 812	2516	eac9de824dd525be6fe5ecf0e46e90f6_JaffaCakes118.exe	33

C:\Users\Admin\AppData\Local\Temp\eac9de824dd525be6fe5ecf0e46e90f6_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\eac9de824dd525be6fe5ecf0e46e90f6_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\eac9de824dd525be6fe5ecf0e46e90f6_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\eac9de824dd525be6fe5ecf0e46e90f6_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2156
- C:\Users\Admin\AppData\Local\Temp\eac9de824dd525be6fe5ecf0e46e90f6_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\eac9de824dd525be6fe5ecf0e46e90f6_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:812

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\0A0F.38C

Filesize
1KB

MD5
301af00935354addeac84403302659b3

SHA1
d938d2b23d3d5beca072395907709b4491c08d89

SHA256
6aaab607bd90b0cf3f379f01d9c1ac2d80114e73d8acbc443020eb3e08c90c7f

SHA512
8d715356b6d7d5d4a136000ead55c9e70507330fe403f20d8643e86bfbbd64f3389155f567ad5fb8fc5b291c567e54294bd3cfe029e898d5711dfe8975310cf4

Download Submit
C:\Users\Admin\AppData\Roaming\0A0F.38C

Filesize
600B

MD5
ef551cbd541ff06a4a6ad9cab886efc3

SHA1
64f9cdd31b1c61e044af43848a56a654e6bbb6fc

SHA256
9702c0d7f245ac23d1ca62d58a0f85baa029d56fda4b5bc4f3d34ca58f084b6c

SHA512
8c98607a6218fc3822d34fdc5e23b2c8d64bd0b690996729adf0f3200864f05a4a32b12a59df02d0c4266f57feb448959107d40ea3768651bba9f1d528bcd3d9

Download Submit
C:\Users\Admin\AppData\Roaming\0A0F.38C

Filesize
996B

MD5
7be6f794ce42ed0bf3bc2b9f9814e390

SHA1
2b5fc3417bcfdf068d0e324548b45aa336540e22

SHA256
93589d617b767383d2b1c781e239d8eed0b381e8b4aa7d3f859201a8d1fd62ef

SHA512
65db518197097f2b0f5d84fb6c2468615f3efa50c84efa37298d13424d12ab6e89bea313c7315161118394f8bb19809b32c8e125ec077036113b4b461e99dac9

Download Submit
memory/812-84-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/812-85-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2156-6-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2156-8-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2156-5-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2516-16-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2516-1-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2516-86-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2516-2-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2516-198-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads