cycbot | 99a87e97639663f4fbc9d92aa505a16410b3eff11c594658c6716907a283f21a

General

Target

e892ab03ade3ed2e60ac6a42ebff863d_JaffaCakes118.exe
Size

165KB
MD5

e892ab03ade3ed2e60ac6a42ebff863d
SHA1

9222c2a015a96c35e58a781b27e5a01c9ec9c4c8
SHA256

99a87e97639663f4fbc9d92aa505a16410b3eff11c594658c6716907a283f21a
SHA512

43ef37865529b039134583744f032b92f2e17652c900032fe35fb460edffa00c69273c2518173509830fe5f9bc60c1048d2fa9660839986fb237b201c79d7eb6
SSDEEP

3072:mdIhB/iDjld0dsvDnuxluIIkWj/eoOtqysPiIFov2eKACXqoRr0CQ/33DTB/S:mdi6fld0dGUTPWKqycNq2esXqSr0rF

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/2840-15-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2840-16-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2124-17-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2124-18-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/3060-116-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2124-117-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2124-283-0x0000000000400000-0x0000000000491000-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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\89343\\FBEB6.exe"	e892ab03ade3ed2e60ac6a42ebff863d_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/2124-3-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2840-14-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2840-15-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2840-16-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2124-17-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2124-18-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/3060-116-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2124-117-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2124-283-0x0000000000400000-0x0000000000491000-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	e892ab03ade3ed2e60ac6a42ebff863d_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e892ab03ade3ed2e60ac6a42ebff863d_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e892ab03ade3ed2e60ac6a42ebff863d_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2124 wrote to memory of 2840	2124	e892ab03ade3ed2e60ac6a42ebff863d_JaffaCakes118.exe	29
PID 2124 wrote to memory of 2840	2124	e892ab03ade3ed2e60ac6a42ebff863d_JaffaCakes118.exe	29
PID 2124 wrote to memory of 2840	2124	e892ab03ade3ed2e60ac6a42ebff863d_JaffaCakes118.exe	29
PID 2124 wrote to memory of 2840	2124	e892ab03ade3ed2e60ac6a42ebff863d_JaffaCakes118.exe	29
PID 2124 wrote to memory of 3060	2124	e892ab03ade3ed2e60ac6a42ebff863d_JaffaCakes118.exe	31
PID 2124 wrote to memory of 3060	2124	e892ab03ade3ed2e60ac6a42ebff863d_JaffaCakes118.exe	31
PID 2124 wrote to memory of 3060	2124	e892ab03ade3ed2e60ac6a42ebff863d_JaffaCakes118.exe	31
PID 2124 wrote to memory of 3060	2124	e892ab03ade3ed2e60ac6a42ebff863d_JaffaCakes118.exe	31

C:\Users\Admin\AppData\Local\Temp\e892ab03ade3ed2e60ac6a42ebff863d_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e892ab03ade3ed2e60ac6a42ebff863d_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2124
- C:\Users\Admin\AppData\Local\Temp\e892ab03ade3ed2e60ac6a42ebff863d_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\e892ab03ade3ed2e60ac6a42ebff863d_JaffaCakes118.exe startC:\Program Files (x86)\LP\B668\826.exe%C:\Program Files (x86)\LP\B668
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2840
- C:\Users\Admin\AppData\Local\Temp\e892ab03ade3ed2e60ac6a42ebff863d_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\e892ab03ade3ed2e60ac6a42ebff863d_JaffaCakes118.exe startC:\Program Files (x86)\4399C\lvvm.exe%C:\Program Files (x86)\4399C
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3060

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\89343\399C.934

Filesize
996B

MD5
13f6333850a529b9a49da7b71aa0e93b

SHA1
e687ff4ce09ded5cad32412a052b3394a6c6f0ed

SHA256
db089a8aa6945ce058960c4b53d4bfa03591a93f2dda7e617888ef9540809da0

SHA512
c730c90998e4fa34a54525123c3e53555b8c3857c3e17c73f4a501433e10707f822d77dd5aa7be935c3873c745ad87a93a92c89e0379aadf0118c9d74c713607

Download Submit
C:\Users\Admin\AppData\Roaming\89343\399C.934

Filesize
600B

MD5
e1efbd907880cfdbd223b1c53a65a64d

SHA1
6fb55ef1e2f53e757f8ba171a29256d7f031e2e6

SHA256
0c7dc809f650f743f69454cd4d4ac329989aedc4e941dcbbed6344271a7d007e

SHA512
4475e50d2fc2b0d8907e3298643b061ddc057e50314c1fb30073bb150cda97f1c7fec76780050b9a76519ebb61cceefc35a0a1782cc3fbbc1b02d7d2a1283984

Download Submit
C:\Users\Admin\AppData\Roaming\89343\399C.934

Filesize
1KB

MD5
47fd89daf5ba69bdace8168bc7f1bbaf

SHA1
af189742c531c37c1b94dd0dfc9601fe6bcab637

SHA256
3be4225103fd15703d8fe2e273b7624bd34f504b93a2243a3e16adda2330c026

SHA512
64b52f1e838163a2685b8075d0b56faf188d17593f33f53569d7bfdc62d8dd2bafe0037e1209cb6dc478893fa4ae41ae444376e0d8434d900bfccedebf363421

Download Submit
memory/2124-117-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2124-3-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2124-2-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2124-0-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2124-283-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2124-17-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2124-18-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2840-14-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2840-16-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2840-15-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3060-116-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads