Malware Analysis Report

2024-08-06 07:57

Sample ID 230705-qnq3yscf28
Target 055672abeb2d5018279ea2ad0.exe
SHA256 055672abeb2d5018279ea2ad039bfa752c1f8333c065e3830ba61b17a65f3731
Tags
cobaltstrike 1359593325 backdoor trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

055672abeb2d5018279ea2ad039bfa752c1f8333c065e3830ba61b17a65f3731

Threat Level: Known bad

The file 055672abeb2d5018279ea2ad0.exe was found to be: Known bad.

Malicious Activity Summary

cobaltstrike 1359593325 backdoor trojan

Cobaltstrike

Drops file in System32 directory

Unsigned PE

Checks processor information in registry

Enumerates system info in registry

Uses Task Scheduler COM API

MITRE ATT&CK Matrix V6

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Privilege Escalation
TA0004
Defense Evasion
TA0005
Credential Access
TA0006
Discovery
TA0007
Query Registry
T1012
System Information Discovery
T1082
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040

Analysis: static1

Detonation Overview

Reported

2023-07-05 13:24

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-07-05 13:24

Reported

2023-07-05 13:27

Platform

win7-20230703-en

Max time kernel

150s

Max time network

130s

Command Line

"C:\Users\Admin\AppData\Local\Temp\055672abeb2d5018279ea2ad0.exe"

Signatures

Cobaltstrike

trojan backdoor cobaltstrike

Processes

C:\Users\Admin\AppData\Local\Temp\055672abeb2d5018279ea2ad0.exe

"C:\Users\Admin\AppData\Local\Temp\055672abeb2d5018279ea2ad0.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 yellow-mountain-cb5f.pza3-bdcb3s.workers.dev udp
US 188.114.97.0:443 yellow-mountain-cb5f.pza3-bdcb3s.workers.dev tcp
US 188.114.97.0:443 yellow-mountain-cb5f.pza3-bdcb3s.workers.dev tcp
US 188.114.97.0:443 yellow-mountain-cb5f.pza3-bdcb3s.workers.dev tcp
US 188.114.97.0:443 yellow-mountain-cb5f.pza3-bdcb3s.workers.dev tcp

Files

memory/1204-54-0x0000000000450000-0x0000000000490000-memory.dmp

memory/1204-55-0x0000000000810000-0x0000000000C82000-memory.dmp

memory/1204-56-0x0000000000810000-0x0000000000C82000-memory.dmp

memory/1204-57-0x0000000000400000-0x000000000044E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-07-05 13:24

Reported

2023-07-05 13:27

Platform

win10v2004-20230703-en

Max time kernel

142s

Max time network

147s

Command Line

"C:\Users\Admin\AppData\Local\Temp\055672abeb2d5018279ea2ad0.exe"

Signatures

Cobaltstrike

trojan backdoor cobaltstrike

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{902AA74E-DF00-4418-B1AF-0B4BF59E90D6}.catalogItem C:\Windows\System32\svchost.exe N/A

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 C:\Windows\System32\svchost.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz C:\Windows\System32\svchost.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Windows\System32\svchost.exe N/A

Enumerates system info in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS C:\Windows\System32\svchost.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU C:\Windows\System32\svchost.exe N/A

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\055672abeb2d5018279ea2ad0.exe

"C:\Users\Admin\AppData\Local\Temp\055672abeb2d5018279ea2ad0.exe"

C:\Windows\System32\svchost.exe

C:\Windows\System32\svchost.exe -k netsvcs -p

Network

Country Destination Domain Proto
US 8.8.8.8:53 yellow-mountain-cb5f.pza3-bdcb3s.workers.dev udp
US 188.114.96.0:443 yellow-mountain-cb5f.pza3-bdcb3s.workers.dev tcp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 0.96.114.188.in-addr.arpa udp
US 8.8.8.8:53 140.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 164.113.223.173.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 8.3.197.209.in-addr.arpa udp
US 188.114.96.0:443 yellow-mountain-cb5f.pza3-bdcb3s.workers.dev tcp
US 188.114.96.0:443 yellow-mountain-cb5f.pza3-bdcb3s.workers.dev tcp
US 8.8.8.8:53 45.8.109.52.in-addr.arpa udp
US 188.114.96.0:443 yellow-mountain-cb5f.pza3-bdcb3s.workers.dev tcp
US 8.8.8.8:53 120.150.79.40.in-addr.arpa udp

Files

memory/2852-133-0x00000000001C0000-0x0000000000200000-memory.dmp

memory/2852-134-0x0000000000C50000-0x00000000010C2000-memory.dmp

memory/2852-135-0x0000000000C50000-0x00000000010C2000-memory.dmp

memory/2852-136-0x0000000000400000-0x000000000044E000-memory.dmp