cycbot | 6cb546e19d1756da2fb7ec6f080693d3606d1b7ca1fff004a483353c81232e0e

General

Target

6cb546e19d1756da2fb7ec6f080693d3606d1b7ca1fff004a483353c81232e0eN.exe
Size

169KB
MD5

8d695065b48cae91f8e7056025063800
SHA1

5359d1daf782f09db642910a1b7b1f1cb5afbb9a
SHA256

6cb546e19d1756da2fb7ec6f080693d3606d1b7ca1fff004a483353c81232e0e
SHA512

6ee6ac208df510ba557e8266ae859c67f5702db479098648f55465f4c377f2e52b8c506476719667b62639a03fc14e59a0335fc3026e1aa234f2857294a5888a
SSDEEP

3072:NCa16ZDAPjlptCOFmZRmk5CW6MDTk9DDgNT6y5Bm3SA8uo:2GFHF6RJC10Tk93gNT15Bm3R8uo

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 6 IoCs

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

Processes:

resource	yara_rule
behavioral2/memory/1144-15-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/2888-16-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral2/memory/2888-17-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/2888-82-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/4256-87-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/2888-194-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

Processes:

6cb546e19d1756da2fb7ec6f080693d3606d1b7ca1fff004a483353c81232e0eN.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\8D525\\71DA0.exe"	6cb546e19d1756da2fb7ec6f080693d3606d1b7ca1fff004a483353c81232e0eN.exe

UPX packed file 10 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/2888-2-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/1144-13-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/1144-12-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/1144-15-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/2888-16-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral2/memory/2888-17-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/2888-82-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4256-85-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4256-87-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/2888-194-0x0000000000400000-0x0000000000491000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 1 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

Processes:

6cb546e19d1756da2fb7ec6f080693d3606d1b7ca1fff004a483353c81232e0eN.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6cb546e19d1756da2fb7ec6f080693d3606d1b7ca1fff004a483353c81232e0eN.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

6cb546e19d1756da2fb7ec6f080693d3606d1b7ca1fff004a483353c81232e0eN.exe

description	pid	Process	procid_target
PID 2888 wrote to memory of 1144	2888	6cb546e19d1756da2fb7ec6f080693d3606d1b7ca1fff004a483353c81232e0eN.exe	85
PID 2888 wrote to memory of 1144	2888	6cb546e19d1756da2fb7ec6f080693d3606d1b7ca1fff004a483353c81232e0eN.exe	85
PID 2888 wrote to memory of 1144	2888	6cb546e19d1756da2fb7ec6f080693d3606d1b7ca1fff004a483353c81232e0eN.exe	85
PID 2888 wrote to memory of 4256	2888	6cb546e19d1756da2fb7ec6f080693d3606d1b7ca1fff004a483353c81232e0eN.exe	100
PID 2888 wrote to memory of 4256	2888	6cb546e19d1756da2fb7ec6f080693d3606d1b7ca1fff004a483353c81232e0eN.exe	100
PID 2888 wrote to memory of 4256	2888	6cb546e19d1756da2fb7ec6f080693d3606d1b7ca1fff004a483353c81232e0eN.exe	100

C:\Users\Admin\AppData\Local\Temp\6cb546e19d1756da2fb7ec6f080693d3606d1b7ca1fff004a483353c81232e0eN.exe
"C:\Users\Admin\AppData\Local\Temp\6cb546e19d1756da2fb7ec6f080693d3606d1b7ca1fff004a483353c81232e0eN.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2888
- C:\Users\Admin\AppData\Local\Temp\6cb546e19d1756da2fb7ec6f080693d3606d1b7ca1fff004a483353c81232e0eN.exe
  C:\Users\Admin\AppData\Local\Temp\6cb546e19d1756da2fb7ec6f080693d3606d1b7ca1fff004a483353c81232e0eN.exe startC:\Program Files (x86)\LP\A058\D7E.exe%C:\Program Files (x86)\LP\A058
  2⤵
  PID:1144
- C:\Users\Admin\AppData\Local\Temp\6cb546e19d1756da2fb7ec6f080693d3606d1b7ca1fff004a483353c81232e0eN.exe
  C:\Users\Admin\AppData\Local\Temp\6cb546e19d1756da2fb7ec6f080693d3606d1b7ca1fff004a483353c81232e0eN.exe startC:\Program Files (x86)\25012\lvvm.exe%C:\Program Files (x86)\25012
  2⤵
  PID:4256

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

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Downloads

C:\Users\Admin\AppData\Roaming\8D525\5012.D52

Filesize
1KB

MD5
920053adc6c42456064869734d59ad7d

SHA1
004d970d7575b85c0fa84503c55ce23e58b8f61a

SHA256
709d6252afe5decbc98da901fd14ff3b18931bb86982ac72439e11fd65111838

SHA512
108686bb2fa11adca7dd672d5491f18c3a7cb084361e40774173823309e3f346e26649f4adb4da55cfae56b2a23829aadd48d6245ba2aa06d68122e9023f5e0e

Download Submit
C:\Users\Admin\AppData\Roaming\8D525\5012.D52

Filesize
600B

MD5
8c0937df1d361ced5702f35b72da1ca5

SHA1
dee5c01249c908dba6826883add31d41dfe27272

SHA256
6b8081f2c589be5ec23f2dffedd4257d5c54a32d0d75fdbdbd8c64ac30f67278

SHA512
895846da9174a69a610b65bd66551cffd8a96a248f4b55ac9c0a2ad99a428fe191229c33dbfbbc11d2c77262bb659a3160924d7954b8a6fb7f51fda49d02a7aa

Download Submit
C:\Users\Admin\AppData\Roaming\8D525\5012.D52

Filesize
996B

MD5
084334989ce86f57c6507ae33ae64f5e

SHA1
d9b362a5729d4d34c3c62aba782d25d85d10fe1f

SHA256
6f20bb0178de423848d394a1bbd790bb460ff0b5805bfc18b2cf268a0360c3c3

SHA512
fdd2071adcaeaac811d768c14b6f8fc7b61d966569adc72091890548aafedce9ead273450d9ca092d394e2e04393852c968a25c6ffaf676d22b7c38a0cf84735

Download Submit
memory/1144-13-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1144-12-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1144-15-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2888-17-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2888-1-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2888-82-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2888-16-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2888-2-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2888-194-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4256-85-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4256-84-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4256-87-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads