Malware Analysis Report

2024-08-06 14:46

Sample ID 240615-k8793svfqg
Target randomfile.exe
SHA256 d09b1d9588c03e806ed27e7fe6bee63af7da8d332e719e5dc4579278722e6e99
Tags
nanocore evasion keylogger spyware stealer 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 Overview

score
10/10

SHA256

d09b1d9588c03e806ed27e7fe6bee63af7da8d332e719e5dc4579278722e6e99

Threat Level: Known bad

The file randomfile.exe was found to be: Known bad.

Malicious Activity Summary

nanocore evasion keylogger spyware stealer trojan

Nanocore family

NanoCore

Checks whether UAC is enabled

Unsigned PE

Creates scheduled task(s)

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Scheduled Task/Job
T1053
Persistence
TA0003
Scheduled Task/Job
T1053
Privilege Escalation
TA0004
Scheduled Task/Job
T1053
Defense Evasion
TA0005
Credential Access
TA0006
Discovery
TA0007
System Information Discovery
T1082
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-06-15 09:17

Signatures

Nanocore family

nanocore

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-15 09:17

Reported

2024-06-15 09:20

Platform

win10v2004-20240611-en

Max time kernel

149s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\randomfile.exe"

Signatures

NanoCore

keylogger trojan stealer spyware nanocore

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\Temp\randomfile.exe N/A

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\randomfile.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\randomfile.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\randomfile.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\randomfile.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\randomfile.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2104 wrote to memory of 2948 N/A C:\Users\Admin\AppData\Local\Temp\randomfile.exe C:\Windows\SysWOW64\schtasks.exe
PID 2104 wrote to memory of 2948 N/A C:\Users\Admin\AppData\Local\Temp\randomfile.exe C:\Windows\SysWOW64\schtasks.exe
PID 2104 wrote to memory of 2948 N/A C:\Users\Admin\AppData\Local\Temp\randomfile.exe C:\Windows\SysWOW64\schtasks.exe

Processes

C:\Users\Admin\AppData\Local\Temp\randomfile.exe

"C:\Users\Admin\AppData\Local\Temp\randomfile.exe"

C:\Windows\SysWOW64\schtasks.exe

"schtasks.exe" /create /f /tn "DDP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmpD3DA.tmp"

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=3044,i,12594301322143882025,16832588342008839449,262144 --variations-seed-version --mojo-platform-channel-handle=4112 /prefetch:8

Network

Country Destination Domain Proto
N/A 224.0.0.251:5353 udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 74.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp

Files

memory/2104-0-0x0000000074EF2000-0x0000000074EF3000-memory.dmp

memory/2104-1-0x0000000074EF0000-0x00000000754A1000-memory.dmp

memory/2104-2-0x0000000074EF0000-0x00000000754A1000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmpD3DA.tmp

MD5 5988267d30e4536e048a71ebf6ce2287
SHA1 908ffb7e1ede3b4861251acc3111b13d7673cc03
SHA256 20a81a8b3d82762db94c240a16c3a0728370dae1bbee6ab98339aac706002ed1
SHA512 dea6b7c07570437197758a1b37710689d77a4b358f5bc39515cb7ace44590c2a58767708f8cac1570e1d0c808dcc48ecdd905809772b891ee9ce27ceba866748

memory/2104-7-0x0000000074EF0000-0x00000000754A1000-memory.dmp

memory/2104-8-0x0000000074EF2000-0x0000000074EF3000-memory.dmp

memory/2104-9-0x0000000074EF0000-0x00000000754A1000-memory.dmp

memory/2104-10-0x0000000074EF0000-0x00000000754A1000-memory.dmp