cycbot | 0b59dbe7144e51b638405e7fcd3215704c952431cd7ed7155d1db401604ee314

General

Target

cf86b664cbe440c27e969834c44df3ff_JaffaCakes118.exe
Size

182KB
MD5

cf86b664cbe440c27e969834c44df3ff
SHA1

b6e51df4c1aa38ae13ade247b3f160715b17af90
SHA256

0b59dbe7144e51b638405e7fcd3215704c952431cd7ed7155d1db401604ee314
SHA512

99e0cc3472e9d3748e4149816d281969f0502eb7bdbf3ebe57e4ecdcc12cb1e88893675dc75e8e225b5af70cb6e550b9c3f678aede3a1aabfd7b245ed47d2556
SSDEEP

3072:59GALJcnkJAYE6Ux2u9wa9qqDn6HxZYf587fSvTGU+ApvnDeumsU:59GALJcnFE/CD6HTWbZ+0jms

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++.

resource	yara_rule
behavioral1/memory/2804-10-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/2472-15-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/592-91-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/2472-92-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/2472-169-0x0000000000400000-0x000000000046E000-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-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	cf86b664cbe440c27e969834c44df3ff_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/2472-2-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2804-10-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2804-8-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2472-15-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/592-90-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/592-91-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2472-92-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2472-169-0x0000000000400000-0x000000000046E000-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	cf86b664cbe440c27e969834c44df3ff_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cf86b664cbe440c27e969834c44df3ff_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cf86b664cbe440c27e969834c44df3ff_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2472 wrote to memory of 2804	2472	cf86b664cbe440c27e969834c44df3ff_JaffaCakes118.exe	30
PID 2472 wrote to memory of 2804	2472	cf86b664cbe440c27e969834c44df3ff_JaffaCakes118.exe	30
PID 2472 wrote to memory of 2804	2472	cf86b664cbe440c27e969834c44df3ff_JaffaCakes118.exe	30
PID 2472 wrote to memory of 2804	2472	cf86b664cbe440c27e969834c44df3ff_JaffaCakes118.exe	30
PID 2472 wrote to memory of 592	2472	cf86b664cbe440c27e969834c44df3ff_JaffaCakes118.exe	32
PID 2472 wrote to memory of 592	2472	cf86b664cbe440c27e969834c44df3ff_JaffaCakes118.exe	32
PID 2472 wrote to memory of 592	2472	cf86b664cbe440c27e969834c44df3ff_JaffaCakes118.exe	32
PID 2472 wrote to memory of 592	2472	cf86b664cbe440c27e969834c44df3ff_JaffaCakes118.exe	32

C:\Users\Admin\AppData\Local\Temp\cf86b664cbe440c27e969834c44df3ff_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\cf86b664cbe440c27e969834c44df3ff_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2472
- C:\Users\Admin\AppData\Local\Temp\cf86b664cbe440c27e969834c44df3ff_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\cf86b664cbe440c27e969834c44df3ff_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2804
- C:\Users\Admin\AppData\Local\Temp\cf86b664cbe440c27e969834c44df3ff_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\cf86b664cbe440c27e969834c44df3ff_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:592

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\85E8.564

Filesize
600B

MD5
529f26eff14cee203cbde82eb15f34f7

SHA1
c9a506846fe0cb75e8ca1a5675c9994fa8bce3aa

SHA256
b30e13f24af012dd17e6e2c28024dc44f303a6574151d4d2cc4ac678fbd89be7

SHA512
dc51691f103c82a04488014219ab8f191d63ad6b03a0866c8c389e75b6ca9a6356157823079ae159e31a506c424849f2255af3ff1ecd0b52853ccbf00b73e6f2

Download Submit
C:\Users\Admin\AppData\Roaming\85E8.564

Filesize
1KB

MD5
d215b6dddb8b34d28e2118548df668d6

SHA1
41492e3f6107b323477b13bc9569a065a55fa6c6

SHA256
145a31c28f4422dd0ac70cefa4cb21ff94ff5817824a72a0c80014c61301578f

SHA512
f552fe74c90d434444214f9fc2b9aac071118da4f245d9b901931f616de64a666e1b8d39e2138399751696f0d6f9fdae849bac3bf00fac6e04039d27cd39ca28

Download Submit
C:\Users\Admin\AppData\Roaming\85E8.564

Filesize
996B

MD5
cb6382216bac6cbfad5850926d81610e

SHA1
eee6188e660ba626ee5be1731d675f0048cc9a69

SHA256
ffe2cabf5272e5ba7aa389dc8338393c8cd7a0eeb1f5611843b9d16a8c2526ab

SHA512
349cea6c8656107f23da147ae8385c21836d72d5e5f818874c6a6bfb48e03413f23ff6f254643789e348fdfaaf035c39057ba5aa480253baff344150fc8c400c

Download Submit
memory/592-88-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/592-91-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/592-90-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2472-92-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2472-15-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2472-1-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2472-169-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2472-2-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2804-8-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2804-10-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads