cycbot | b4961731a649665ccee47fa4e10b85355640e182b148460e47068f27ab220e44

General

Target

b4961731a649665ccee47fa4e10b85355640e182b148460e47068f27ab220e44N.exe
Size

169KB
MD5

b6e91af58e0d4dcd60afe30adfdd0730
SHA1

73ba3ebd344cc3255e1127c248a6cfebd965cb43
SHA256

b4961731a649665ccee47fa4e10b85355640e182b148460e47068f27ab220e44
SHA512

84b5cacf9b54055c6195d2d0fb8d0dcc148326e79494a3d2128f8227ef676a513b63748901e423646ae67eaee9898964d5aaf4736225a86fdb54d1ff4fcb0bf2
SSDEEP

3072:pYtI3xw7+scZSKf9OnYqjbsYUdhV+ZF+Q0kx+p9s4lgUBS9Rh/duUk:pP3xeNcZSKf9yYosXdhTksp9IdE

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 6 IoCs

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

resource	yara_rule
behavioral1/memory/2836-15-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2008-16-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/2008-17-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2008-74-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2384-78-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2008-171-0x0000000000400000-0x0000000000491000-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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\6370D\\2643D.exe"	b4961731a649665ccee47fa4e10b85355640e182b148460e47068f27ab220e44N.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/2008-2-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2836-14-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2836-15-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2008-16-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/2008-17-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2008-74-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2384-76-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2384-78-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2008-171-0x0000000000400000-0x0000000000491000-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	b4961731a649665ccee47fa4e10b85355640e182b148460e47068f27ab220e44N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b4961731a649665ccee47fa4e10b85355640e182b148460e47068f27ab220e44N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b4961731a649665ccee47fa4e10b85355640e182b148460e47068f27ab220e44N.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2008 wrote to memory of 2836	2008	b4961731a649665ccee47fa4e10b85355640e182b148460e47068f27ab220e44N.exe	30
PID 2008 wrote to memory of 2836	2008	b4961731a649665ccee47fa4e10b85355640e182b148460e47068f27ab220e44N.exe	30
PID 2008 wrote to memory of 2836	2008	b4961731a649665ccee47fa4e10b85355640e182b148460e47068f27ab220e44N.exe	30
PID 2008 wrote to memory of 2836	2008	b4961731a649665ccee47fa4e10b85355640e182b148460e47068f27ab220e44N.exe	30
PID 2008 wrote to memory of 2384	2008	b4961731a649665ccee47fa4e10b85355640e182b148460e47068f27ab220e44N.exe	32
PID 2008 wrote to memory of 2384	2008	b4961731a649665ccee47fa4e10b85355640e182b148460e47068f27ab220e44N.exe	32
PID 2008 wrote to memory of 2384	2008	b4961731a649665ccee47fa4e10b85355640e182b148460e47068f27ab220e44N.exe	32
PID 2008 wrote to memory of 2384	2008	b4961731a649665ccee47fa4e10b85355640e182b148460e47068f27ab220e44N.exe	32

C:\Users\Admin\AppData\Local\Temp\b4961731a649665ccee47fa4e10b85355640e182b148460e47068f27ab220e44N.exe
"C:\Users\Admin\AppData\Local\Temp\b4961731a649665ccee47fa4e10b85355640e182b148460e47068f27ab220e44N.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2008
- C:\Users\Admin\AppData\Local\Temp\b4961731a649665ccee47fa4e10b85355640e182b148460e47068f27ab220e44N.exe
  C:\Users\Admin\AppData\Local\Temp\b4961731a649665ccee47fa4e10b85355640e182b148460e47068f27ab220e44N.exe startC:\Program Files (x86)\LP\4486\E1C.exe%C:\Program Files (x86)\LP\4486
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2836
- C:\Users\Admin\AppData\Local\Temp\b4961731a649665ccee47fa4e10b85355640e182b148460e47068f27ab220e44N.exe
  C:\Users\Admin\AppData\Local\Temp\b4961731a649665ccee47fa4e10b85355640e182b148460e47068f27ab220e44N.exe startC:\Program Files (x86)\0D2CD\lvvm.exe%C:\Program Files (x86)\0D2CD
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2384

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\6370D\D2CD.370

Filesize
1KB

MD5
5bfd5f6d541e73f429523615e21033b4

SHA1
c8f6829b57e3aa2c995bab73062b9f8094ce5117

SHA256
c6f5a1cf973ff6f985c6ae84ce867ca9d56e108e7209c73bb5149645df450e56

SHA512
025cd1eaad7fb3ba4dfae1b5671588d8adc819483e8cd739a4e293d2509d658e0fd6ff519ce7eed87615806265e68b9d8fbbffaa9a497e71801005f46f716733

Download Submit
C:\Users\Admin\AppData\Roaming\6370D\D2CD.370

Filesize
600B

MD5
ddc79332e42cb4498f0aecc8394ad15f

SHA1
3150e56692eb3d602dfde910bd886560370cdbd1

SHA256
3eb8184ffcc95efdd9b20652d57a72a4576a19dc05ed3174a4f0a851473ffa5c

SHA512
a4de1240fdf1f8d89b8c1a32724657ede813f014428176d97795aabe5e992f40cd90f18702f60160dff255bf4a90c356e355734a712ac78dd6751de1460b8efd

Download Submit
C:\Users\Admin\AppData\Roaming\6370D\D2CD.370

Filesize
996B

MD5
b160c3663e5e81cf10bade380df2596d

SHA1
55d929fb7401bc03e2f50daca0b124242e1d8c24

SHA256
45ff228c4cb5a1ae0cedde8b9279f05681f02f32896580b148fa0a7d11903341

SHA512
5be3204543ff51eba052412c88849472d9c37c7f9776b46211f49816cc4b0efbcaca3cb0f1974cdb83092f863be975cd8bcafa5a015aa0b95e529425e8438081

Download Submit
memory/2008-1-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2008-2-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2008-171-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2008-16-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2008-17-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2008-74-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2384-76-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2384-78-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2836-15-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2836-12-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2836-14-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads