cycbot | ca873c83169b6e3143a6eb78a812241ae9a88bae50bec3832c0df0815c2bffd6

General

Target

ca873c83169b6e3143a6eb78a812241ae9a88bae50bec3832c0df0815c2bffd6N.exe
Size

176KB
MD5

cca84829dde5696ba97397cfee06d180
SHA1

19a3d095c83cae37f6deaa5edbfe7143c13bdb14
SHA256

ca873c83169b6e3143a6eb78a812241ae9a88bae50bec3832c0df0815c2bffd6
SHA512

368ad3bb998ffc8f030616f3f9ba0cfd6e2847ac6f98f83342e868ea7f214c0a99c01a6659fee1848c225690cdc99db91f3eb63059710ad02cfe61ea96bde186
SSDEEP

3072:bRC/UmzULMWQzL8+j+Fegyht8y7dTMiT5NrAvLs0pne8gRQ:NPmAMWKo+S0rv8ytMsrAvIbRQ

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/2368-14-0x0000000000400000-0x000000000046C000-memory.dmp	family_cycbot
behavioral1/memory/2556-15-0x0000000000400000-0x000000000046C000-memory.dmp	family_cycbot
behavioral1/memory/2556-94-0x0000000000400000-0x000000000046C000-memory.dmp	family_cycbot
behavioral1/memory/1964-99-0x0000000000400000-0x000000000046C000-memory.dmp	family_cycbot
behavioral1/memory/2556-100-0x0000000000400000-0x000000000046C000-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"	ca873c83169b6e3143a6eb78a812241ae9a88bae50bec3832c0df0815c2bffd6N.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 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2556-2-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2368-14-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2556-15-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2556-94-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/1964-97-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/1964-99-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2556-100-0x0000000000400000-0x000000000046C000-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	ca873c83169b6e3143a6eb78a812241ae9a88bae50bec3832c0df0815c2bffd6N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ca873c83169b6e3143a6eb78a812241ae9a88bae50bec3832c0df0815c2bffd6N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ca873c83169b6e3143a6eb78a812241ae9a88bae50bec3832c0df0815c2bffd6N.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2556 wrote to memory of 2368	2556	ca873c83169b6e3143a6eb78a812241ae9a88bae50bec3832c0df0815c2bffd6N.exe	31
PID 2556 wrote to memory of 2368	2556	ca873c83169b6e3143a6eb78a812241ae9a88bae50bec3832c0df0815c2bffd6N.exe	31
PID 2556 wrote to memory of 2368	2556	ca873c83169b6e3143a6eb78a812241ae9a88bae50bec3832c0df0815c2bffd6N.exe	31
PID 2556 wrote to memory of 2368	2556	ca873c83169b6e3143a6eb78a812241ae9a88bae50bec3832c0df0815c2bffd6N.exe	31
PID 2556 wrote to memory of 1964	2556	ca873c83169b6e3143a6eb78a812241ae9a88bae50bec3832c0df0815c2bffd6N.exe	33
PID 2556 wrote to memory of 1964	2556	ca873c83169b6e3143a6eb78a812241ae9a88bae50bec3832c0df0815c2bffd6N.exe	33
PID 2556 wrote to memory of 1964	2556	ca873c83169b6e3143a6eb78a812241ae9a88bae50bec3832c0df0815c2bffd6N.exe	33
PID 2556 wrote to memory of 1964	2556	ca873c83169b6e3143a6eb78a812241ae9a88bae50bec3832c0df0815c2bffd6N.exe	33

C:\Users\Admin\AppData\Local\Temp\ca873c83169b6e3143a6eb78a812241ae9a88bae50bec3832c0df0815c2bffd6N.exe
"C:\Users\Admin\AppData\Local\Temp\ca873c83169b6e3143a6eb78a812241ae9a88bae50bec3832c0df0815c2bffd6N.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2556
- C:\Users\Admin\AppData\Local\Temp\ca873c83169b6e3143a6eb78a812241ae9a88bae50bec3832c0df0815c2bffd6N.exe
  C:\Users\Admin\AppData\Local\Temp\ca873c83169b6e3143a6eb78a812241ae9a88bae50bec3832c0df0815c2bffd6N.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2368
- C:\Users\Admin\AppData\Local\Temp\ca873c83169b6e3143a6eb78a812241ae9a88bae50bec3832c0df0815c2bffd6N.exe
  C:\Users\Admin\AppData\Local\Temp\ca873c83169b6e3143a6eb78a812241ae9a88bae50bec3832c0df0815c2bffd6N.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1964

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

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Downloads

C:\Users\Admin\AppData\Roaming\0974.01F

Filesize
600B

MD5
9e456be129945fb39d953d3ac7930421

SHA1
4510001f07f7ef60387dc178da845c0948d95fe3

SHA256
689beeecb6d5fbe57537a98f7ddadb765191fee46d6977deb45414556d6e7bbf

SHA512
fe19812344ba223f463d6937d90e4d4a56fecc5993afa9f31862ddefcaee1c77aac53dc93196bd30c3cfe39650cf4942f1879e797b2a1f4f2216011ed6bf651b

Download Submit
C:\Users\Admin\AppData\Roaming\0974.01F

Filesize
996B

MD5
4d938a07972e97c2eeb87b8bc43cd426

SHA1
479ff6392f5e70a337cbdf92b917d2d794d9d2dd

SHA256
3a39ebd2be0f4d13e2c2109dc9f3dd7592c3c45330fd9670cf3564855c524d51

SHA512
209c0c19c0a47fabbd448c4c5664ecd8f645e9013e310deca9e99b3de0d8608d0e8d8fd9c170ee06da498a3c47de268f49949b40fb9076d0004e57e1feb8e85d

Download Submit
memory/1964-96-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/1964-97-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/1964-99-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2368-12-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2368-14-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2556-1-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2556-2-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2556-15-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2556-94-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2556-100-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads