cycbot | b8d2f66ed43792b1092cc1dbdc462159648740c92232c4cf4727facd9bdeaf7f

General

Target

967366d71b6ff1d93b2037badcaf4089_JaffaCakes118.exe
Size

175KB
MD5

967366d71b6ff1d93b2037badcaf4089
SHA1

abe06b4e27135b587f65c229aca2b602789cc1d3
SHA256

b8d2f66ed43792b1092cc1dbdc462159648740c92232c4cf4727facd9bdeaf7f
SHA512

536e3ba3f094b7b419a316f12370c7bfeae28ec3e402c4edd9e49dbcee63d2b3ac01243165930d542805c2556f9810bdcd311598ee46fd4b02d4ace491f3431c
SSDEEP

3072:Lu8MsX4PrUTpyw7vj89z74nEhg6/Hmhhe7hx3FjW3ydOT8kj:LuRu377nCpHmhEXjW3Jh

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 5 IoCs

Cycbot is a backdoor and trojan written in C++.

Processes:

resource	yara_rule
behavioral1/memory/688-14-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/596-15-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/596-70-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/2812-75-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/596-146-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

Processes:

967366d71b6ff1d93b2037badcaf4089_JaffaCakes118.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	967366d71b6ff1d93b2037badcaf4089_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

Processes:

resource	yara_rule
behavioral1/memory/596-1-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/596-2-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/688-14-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/688-12-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/596-15-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/596-70-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/2812-75-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/2812-74-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/596-146-0x0000000000400000-0x000000000048E000-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

Processes:

967366d71b6ff1d93b2037badcaf4089_JaffaCakes118.exe967366d71b6ff1d93b2037badcaf4089_JaffaCakes118.exe967366d71b6ff1d93b2037badcaf4089_JaffaCakes118.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	967366d71b6ff1d93b2037badcaf4089_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	967366d71b6ff1d93b2037badcaf4089_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	967366d71b6ff1d93b2037badcaf4089_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

967366d71b6ff1d93b2037badcaf4089_JaffaCakes118.exe

description	pid	process	target process
PID 596 wrote to memory of 688	596	967366d71b6ff1d93b2037badcaf4089_JaffaCakes118.exe	967366d71b6ff1d93b2037badcaf4089_JaffaCakes118.exe
PID 596 wrote to memory of 688	596	967366d71b6ff1d93b2037badcaf4089_JaffaCakes118.exe	967366d71b6ff1d93b2037badcaf4089_JaffaCakes118.exe
PID 596 wrote to memory of 688	596	967366d71b6ff1d93b2037badcaf4089_JaffaCakes118.exe	967366d71b6ff1d93b2037badcaf4089_JaffaCakes118.exe
PID 596 wrote to memory of 688	596	967366d71b6ff1d93b2037badcaf4089_JaffaCakes118.exe	967366d71b6ff1d93b2037badcaf4089_JaffaCakes118.exe
PID 596 wrote to memory of 2812	596	967366d71b6ff1d93b2037badcaf4089_JaffaCakes118.exe	967366d71b6ff1d93b2037badcaf4089_JaffaCakes118.exe
PID 596 wrote to memory of 2812	596	967366d71b6ff1d93b2037badcaf4089_JaffaCakes118.exe	967366d71b6ff1d93b2037badcaf4089_JaffaCakes118.exe
PID 596 wrote to memory of 2812	596	967366d71b6ff1d93b2037badcaf4089_JaffaCakes118.exe	967366d71b6ff1d93b2037badcaf4089_JaffaCakes118.exe
PID 596 wrote to memory of 2812	596	967366d71b6ff1d93b2037badcaf4089_JaffaCakes118.exe	967366d71b6ff1d93b2037badcaf4089_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\967366d71b6ff1d93b2037badcaf4089_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\967366d71b6ff1d93b2037badcaf4089_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:596
- C:\Users\Admin\AppData\Local\Temp\967366d71b6ff1d93b2037badcaf4089_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\967366d71b6ff1d93b2037badcaf4089_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:688
- C:\Users\Admin\AppData\Local\Temp\967366d71b6ff1d93b2037badcaf4089_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\967366d71b6ff1d93b2037badcaf4089_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2812

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\8698.19F

Filesize
1KB

MD5
ed5bc3bffbd36b6068608efcb54464c5

SHA1
423b877ad49e1e2b886efe65a61d384e97613e05

SHA256
7b2dbd3ab75f539088044c34c4817831a7d56ef4e2b966fcfc999a1660342443

SHA512
13694f146cebbe7da50d54f3ed16a69529f8f16080863c77455583016e49acdff4c09cb81e3eaa7440fba0bd92e6eda9454e40cfb255695f3aca39171aae3610

Download Submit
C:\Users\Admin\AppData\Roaming\8698.19F

Filesize
600B

MD5
0be595e76ae3c4f5c0f0817a8e62d89f

SHA1
256a64f8ef4fd37166bc8c7aa848193518b662dd

SHA256
8d92735f60c6e2aefa8d5f217e0f53ab51dfcc0e6ba158e88e089b305d19fa00

SHA512
c63e854f3b6bca2e39c6d0fbd5135e7c4ee2c36c6a592f446cb5cdeeec873c605568b0f8826a5c6f2e287e504eea21bda7b6e82d439df421425b668ab87a0829

Download Submit
C:\Users\Admin\AppData\Roaming\8698.19F

Filesize
996B

MD5
92d16b73e20aa5638fac439e3ab5c8d7

SHA1
e023c722014497ae4c862717c0938b504c7949a1

SHA256
c857364ba9fbc4019aaee5c63d41a1586eb35aa9123ce6d8a64fe8c821258b7d

SHA512
c152a57d1ef208fd0d7595773516f35f25236937042f9ba8483803c91a97a2a52ae320d1f4a5a5fc03c86b951990c2b156e4c8164b31f6566464e3f53f55d770

Download Submit
memory/596-2-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/596-146-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/596-1-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/596-15-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/596-70-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/688-12-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/688-14-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2812-74-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2812-75-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2812-72-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads