cycbot | 2645b0cd0c35f48bbd041f9ff421082a39c5b6ab476aedc5b567fa81b18756ed

General

Target

e95d073aff907081e40e70a50dcc1f94_JaffaCakes118.exe
Size

181KB
MD5

e95d073aff907081e40e70a50dcc1f94
SHA1

79241ada685fd1b3839822402ab787f66eba8943
SHA256

2645b0cd0c35f48bbd041f9ff421082a39c5b6ab476aedc5b567fa81b18756ed
SHA512

18f3928718d7ae3285e982b137a0df87d7e3b4f084f8063e81c7cda3e7c3a6c6da4280dd68d34c3e987cb5fb13f6a5edd4d5e97dd57dffe416f6b522a2ff67a3
SSDEEP

3072:7mAJJqsaaHD1wt6iOB2HQK6Lc0G2GQycOAi5rlv/vvoHMN5cGLJE:aAis3wg2SLWBcOA05v/vveajL

Score

10^/10

cycbot backdoor discovery persistence rat 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
behavioral2/memory/1836-14-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral2/memory/4868-15-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral2/memory/4868-77-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral2/memory/1708-81-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral2/memory/4868-194-0x0000000000400000-0x000000000048D000-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-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	e95d073aff907081e40e70a50dcc1f94_JaffaCakes118.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4868-2-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral2/memory/1836-12-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral2/memory/1836-14-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral2/memory/4868-15-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral2/memory/4868-77-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral2/memory/1708-80-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral2/memory/1708-81-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral2/memory/4868-194-0x0000000000400000-0x000000000048D000-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	e95d073aff907081e40e70a50dcc1f94_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e95d073aff907081e40e70a50dcc1f94_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e95d073aff907081e40e70a50dcc1f94_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4868 wrote to memory of 1836	4868	e95d073aff907081e40e70a50dcc1f94_JaffaCakes118.exe	85
PID 4868 wrote to memory of 1836	4868	e95d073aff907081e40e70a50dcc1f94_JaffaCakes118.exe	85
PID 4868 wrote to memory of 1836	4868	e95d073aff907081e40e70a50dcc1f94_JaffaCakes118.exe	85
PID 4868 wrote to memory of 1708	4868	e95d073aff907081e40e70a50dcc1f94_JaffaCakes118.exe	93
PID 4868 wrote to memory of 1708	4868	e95d073aff907081e40e70a50dcc1f94_JaffaCakes118.exe	93
PID 4868 wrote to memory of 1708	4868	e95d073aff907081e40e70a50dcc1f94_JaffaCakes118.exe	93

C:\Users\Admin\AppData\Local\Temp\e95d073aff907081e40e70a50dcc1f94_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e95d073aff907081e40e70a50dcc1f94_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4868
- C:\Users\Admin\AppData\Local\Temp\e95d073aff907081e40e70a50dcc1f94_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\e95d073aff907081e40e70a50dcc1f94_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1836
- C:\Users\Admin\AppData\Local\Temp\e95d073aff907081e40e70a50dcc1f94_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\e95d073aff907081e40e70a50dcc1f94_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1708

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

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\F40B.BA6

Filesize
1KB

MD5
cde0e54b57efa97ad458c6efaad7da26

SHA1
8382aa4240e918e1a0b6d8e5e022109fdd21f153

SHA256
1b2418435680bb692b998a70cab7f0b17ee3deeeca27c50d18cfbc46d2ae1d12

SHA512
0ccf25ea2e828987341b21b0a1c727d4af4a40a326ecaa0b25b9d1d1592e2c6b1591410b4ca638b8685c3d208e09a6dd84394eafd2780c604ef619b6f12922aa

Download Submit
C:\Users\Admin\AppData\Roaming\F40B.BA6

Filesize
600B

MD5
a38d902684e7ad01c2af66d2ca259a30

SHA1
5b4684c96b7a45d7986f93b81066796a55accccb

SHA256
946325c27bd68e92a0b1d0994e6bc27a17d190d344b2925253d8edfca621f9ce

SHA512
b62c3462aa979bf58c37c6ad7c3f9c91730192aeff6b220078903652950cf4ce5808639e4c21be079b68dbfeb318521ded179e307883af90d69dc9236a31292c

Download Submit
C:\Users\Admin\AppData\Roaming\F40B.BA6

Filesize
996B

MD5
92764a55f6863e2d188c041f9bba0b56

SHA1
2b18f6cd1d985562b8cf685df14722ac1f91ca2f

SHA256
cd14da057ea563d6ae62c1a64d860b2f2c6dba79e45643574f2f83534b192dc8

SHA512
a74c2bf5e64dd4d57013df9c248a3031e73661c19f48cdc8edafa4372b1be96cb65e9006ef491d9d8e0eff8abfc6c0ae97025048e8fb6087ffa66b4dc92b3a96

Download Submit
memory/1708-80-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/1708-81-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/1836-12-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/1836-14-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/4868-1-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/4868-2-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/4868-15-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/4868-77-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/4868-194-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads