cycbot | cd705b00962c246a2513eebce6e3c6b50aed5b3576569006d362a3f16e5b10ea

General

Target

JaffaCakes118_4050f3601ab7931a0f6db2262ecb25a9.exe
Size

165KB
MD5

4050f3601ab7931a0f6db2262ecb25a9
SHA1

aea77ad2a71dea57b06d824ab8617149e2d1edcc
SHA256

cd705b00962c246a2513eebce6e3c6b50aed5b3576569006d362a3f16e5b10ea
SHA512

1d1ce6495680eb604873297f515f163e9c9145451552158bd897968eab3094e3b8b8ea46e974a15b28b11e9f82a7f64f8569d2c0720d00f30f5a69e140fe2507
SSDEEP

3072:hMMbRiYder+FnuJ2PaCZwXPlbPXHVO2oBvQ6xNDCnz1dShLeA184Uum9xVp:hzb0Yd+3Ehih1PoBI6HDw11A184UTxV

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 7 IoCs

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

resource	yara_rule
behavioral1/memory/1692-16-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2436-17-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/2436-18-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/592-105-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/592-106-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2436-107-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2436-261-0x0000000000400000-0x0000000000491000-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\\0EFCF\\D117E.exe"	JaffaCakes118_4050f3601ab7931a0f6db2262ecb25a9.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 10 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2436-3-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1692-15-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1692-14-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1692-16-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2436-17-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/2436-18-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/592-105-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/592-106-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2436-107-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2436-261-0x0000000000400000-0x0000000000491000-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_4050f3601ab7931a0f6db2262ecb25a9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4050f3601ab7931a0f6db2262ecb25a9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4050f3601ab7931a0f6db2262ecb25a9.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2436 wrote to memory of 1692	2436	JaffaCakes118_4050f3601ab7931a0f6db2262ecb25a9.exe	30
PID 2436 wrote to memory of 1692	2436	JaffaCakes118_4050f3601ab7931a0f6db2262ecb25a9.exe	30
PID 2436 wrote to memory of 1692	2436	JaffaCakes118_4050f3601ab7931a0f6db2262ecb25a9.exe	30
PID 2436 wrote to memory of 1692	2436	JaffaCakes118_4050f3601ab7931a0f6db2262ecb25a9.exe	30
PID 2436 wrote to memory of 592	2436	JaffaCakes118_4050f3601ab7931a0f6db2262ecb25a9.exe	33
PID 2436 wrote to memory of 592	2436	JaffaCakes118_4050f3601ab7931a0f6db2262ecb25a9.exe	33
PID 2436 wrote to memory of 592	2436	JaffaCakes118_4050f3601ab7931a0f6db2262ecb25a9.exe	33
PID 2436 wrote to memory of 592	2436	JaffaCakes118_4050f3601ab7931a0f6db2262ecb25a9.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4050f3601ab7931a0f6db2262ecb25a9.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4050f3601ab7931a0f6db2262ecb25a9.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2436
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4050f3601ab7931a0f6db2262ecb25a9.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4050f3601ab7931a0f6db2262ecb25a9.exe startC:\Program Files (x86)\LP\7E60\747.exe%C:\Program Files (x86)\LP\7E60
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1692
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4050f3601ab7931a0f6db2262ecb25a9.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4050f3601ab7931a0f6db2262ecb25a9.exe startC:\Program Files (x86)\CFEBA\lvvm.exe%C:\Program Files (x86)\CFEBA
  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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\0EFCF\FEBA.EFC

Filesize
300B

MD5
489aaecd1bf25e4009ae403e69ca811d

SHA1
6fe33ce14f527f1d5f2d115566f3e2d0bb4be8db

SHA256
057ad5f265ee7ed726a1fab33551d84ddf5d0672b5fd37330b3fff6253b28624

SHA512
8b5301e7b8744b0c5eabda83e65d8c751c66dd28aab821047917bdfb8187d030d097fb6e5ce5a18c44b2bd398aa9215c691dce65c8adffdc50e2cd561a0beb45

Download Submit
C:\Users\Admin\AppData\Roaming\0EFCF\FEBA.EFC

Filesize
996B

MD5
5a29f6efec9613ef15b42a06266ad476

SHA1
a6ceb55c3b54887bc3bbe0d632c06e99e73cc601

SHA256
ba50907fff5e29fc015e7e76af9a95d1c1dde4a3c908b0e5b776c5876678ccb2

SHA512
025216775366013b7e8325002d1e3333334a2f0c2a981a353ed38ef68a7fcb4f76d52a4bb1856a23cff696806bc30b95b2d9c4aa3740740a1dae046dfff9df9a

Download Submit
C:\Users\Admin\AppData\Roaming\0EFCF\FEBA.EFC

Filesize
600B

MD5
a275795196c9ee25b2423843b024baee

SHA1
24e01ce72efbf2d2ebfae62e91392002ffd2bf33

SHA256
8b484dcd22a1a875423368dbf381cfafceeeb63baa62129b27ec15a2fffebd16

SHA512
fa85abf49ea118c323df75bce26fe7e9a0436625884b1cd495a9c8747be006ea59795c4efcb94c4ed748c3730acb485c72bdba331099000a56568d549bbbf5aa

Download Submit
C:\Users\Admin\AppData\Roaming\0EFCF\FEBA.EFC

Filesize
1KB

MD5
3aeda1dfb6cba674411015367b7f8791

SHA1
ddb39c34453330770d4eb2fc42e6bd1a573ce66a

SHA256
4b287379d256cfc4f256a199b45bf9d5de2af6b0e490ff814483c0221e4c942e

SHA512
40343d9b365708808b9db893de06db83943b4596b31b9c79217294b69768ff2f0ec17a76d87d51de6043db58bf46084585ea0ae767e5526586025970589ed314

Download Submit
memory/592-106-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/592-105-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1692-15-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1692-14-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1692-16-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2436-18-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2436-0-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2436-17-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2436-107-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2436-3-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2436-2-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2436-261-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads