Malware Analysis Report

2024-08-06 15:26

Sample ID 240523-yt3myaee99
Target 31adf61f5030afa2cae1f349a12b3a757dbdd21f800c53d2679523cbfd100a96
SHA256 31adf61f5030afa2cae1f349a12b3a757dbdd21f800c53d2679523cbfd100a96
Tags
nanocore evasion keylogger persistence 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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

31adf61f5030afa2cae1f349a12b3a757dbdd21f800c53d2679523cbfd100a96

Threat Level: Known bad

The file 31adf61f5030afa2cae1f349a12b3a757dbdd21f800c53d2679523cbfd100a96 was found to be: Known bad.

Malicious Activity Summary

nanocore evasion keylogger persistence spyware stealer trojan

NanoCore

Loads dropped DLL

Executes dropped EXE

Checks computer location settings

Adds Run key to start application

Checks whether UAC is enabled

Suspicious use of SetThreadContext

Unsigned PE

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: GetForegroundWindowSpam

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Privilege Escalation
TA0004
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Defense Evasion
TA0005
Modify Registry
T1112
Credential Access
TA0006
Discovery
TA0007
System Information Discovery
T1082
Query Registry
T1012
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-05-23 20:05

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-23 20:05

Reported

2024-05-23 20:08

Platform

win7-20240508-en

Max time kernel

146s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\31adf61f5030afa2cae1f349a12b3a757dbdd21f800c53d2679523cbfd100a96.exe"

Signatures

NanoCore

keylogger trojan stealer spyware nanocore

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\31adf61f5030afa2cae1f349a12b3a757dbdd21f800c53d2679523cbfd100a96.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000\Software\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe" C:\Users\Admin\AppData\Local\Temp\31adf61f5030afa2cae1f349a12b3a757dbdd21f800c53d2679523cbfd100a96.exe N/A

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\Roaming\b1b2dqljdx3\a1punf5t2of.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2592 set thread context of 1424 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2104 wrote to memory of 2592 N/A C:\Users\Admin\AppData\Local\Temp\31adf61f5030afa2cae1f349a12b3a757dbdd21f800c53d2679523cbfd100a96.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2104 wrote to memory of 2592 N/A C:\Users\Admin\AppData\Local\Temp\31adf61f5030afa2cae1f349a12b3a757dbdd21f800c53d2679523cbfd100a96.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2104 wrote to memory of 2592 N/A C:\Users\Admin\AppData\Local\Temp\31adf61f5030afa2cae1f349a12b3a757dbdd21f800c53d2679523cbfd100a96.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2104 wrote to memory of 2592 N/A C:\Users\Admin\AppData\Local\Temp\31adf61f5030afa2cae1f349a12b3a757dbdd21f800c53d2679523cbfd100a96.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2104 wrote to memory of 2592 N/A C:\Users\Admin\AppData\Local\Temp\31adf61f5030afa2cae1f349a12b3a757dbdd21f800c53d2679523cbfd100a96.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2104 wrote to memory of 2592 N/A C:\Users\Admin\AppData\Local\Temp\31adf61f5030afa2cae1f349a12b3a757dbdd21f800c53d2679523cbfd100a96.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2104 wrote to memory of 2592 N/A C:\Users\Admin\AppData\Local\Temp\31adf61f5030afa2cae1f349a12b3a757dbdd21f800c53d2679523cbfd100a96.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2592 wrote to memory of 1424 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2592 wrote to memory of 1424 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2592 wrote to memory of 1424 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2592 wrote to memory of 1424 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2592 wrote to memory of 1424 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2592 wrote to memory of 1424 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2592 wrote to memory of 1424 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2592 wrote to memory of 1424 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2592 wrote to memory of 1424 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2592 wrote to memory of 1424 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2592 wrote to memory of 1424 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2592 wrote to memory of 1424 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe

Processes

C:\Users\Admin\AppData\Local\Temp\31adf61f5030afa2cae1f349a12b3a757dbdd21f800c53d2679523cbfd100a96.exe

"C:\Users\Admin\AppData\Local\Temp\31adf61f5030afa2cae1f349a12b3a757dbdd21f800c53d2679523cbfd100a96.exe"

C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe

"C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"

C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe

"C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 sysupdate24.ddns.net udp

Files

memory/2104-0-0x0000000074B41000-0x0000000074B42000-memory.dmp

memory/2104-1-0x0000000074B40000-0x00000000750EB000-memory.dmp

memory/2104-2-0x0000000074B40000-0x00000000750EB000-memory.dmp

memory/2104-3-0x0000000074B40000-0x00000000750EB000-memory.dmp

\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe

MD5 1e733596e1091878d371bd104a1e3c9d
SHA1 0738c8fb57ed6c2310f85028aa39583a20933f2c
SHA256 7e0283e55058b483566d30d543a4857c0d94baa43b55722a524e3fe70a23f97d
SHA512 3640c8e522a06a98fedb71c0915cc64510d567ae96550a7a887c2c03e6bc44153ca0a74445c58d797a36386144ee7de5cf9e1e52335fca0a759a7c85a6a36f1c

memory/2104-12-0x0000000074B40000-0x00000000750EB000-memory.dmp

memory/2592-14-0x0000000074B40000-0x00000000750EB000-memory.dmp

memory/2592-13-0x0000000074B40000-0x00000000750EB000-memory.dmp

memory/2592-15-0x0000000074B40000-0x00000000750EB000-memory.dmp

memory/1424-19-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1424-17-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1424-33-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1424-21-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1424-35-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1424-28-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/1424-27-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1424-24-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2592-37-0x0000000074B40000-0x00000000750EB000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-23 20:05

Reported

2024-05-23 20:08

Platform

win10v2004-20240426-en

Max time kernel

135s

Max time network

140s

Command Line

"C:\Users\Admin\AppData\Local\Temp\31adf61f5030afa2cae1f349a12b3a757dbdd21f800c53d2679523cbfd100a96.exe"

Signatures

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\31adf61f5030afa2cae1f349a12b3a757dbdd21f800c53d2679523cbfd100a96.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe" C:\Users\Admin\AppData\Local\Temp\31adf61f5030afa2cae1f349a12b3a757dbdd21f800c53d2679523cbfd100a96.exe N/A

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1112 wrote to memory of 212 N/A C:\Users\Admin\AppData\Local\Temp\31adf61f5030afa2cae1f349a12b3a757dbdd21f800c53d2679523cbfd100a96.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 1112 wrote to memory of 212 N/A C:\Users\Admin\AppData\Local\Temp\31adf61f5030afa2cae1f349a12b3a757dbdd21f800c53d2679523cbfd100a96.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 1112 wrote to memory of 212 N/A C:\Users\Admin\AppData\Local\Temp\31adf61f5030afa2cae1f349a12b3a757dbdd21f800c53d2679523cbfd100a96.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 212 wrote to memory of 3424 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 212 wrote to memory of 3424 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 212 wrote to memory of 3424 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe

Processes

C:\Users\Admin\AppData\Local\Temp\31adf61f5030afa2cae1f349a12b3a757dbdd21f800c53d2679523cbfd100a96.exe

"C:\Users\Admin\AppData\Local\Temp\31adf61f5030afa2cae1f349a12b3a757dbdd21f800c53d2679523cbfd100a96.exe"

C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe

"C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"

C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe

"C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 242.137.73.23.in-addr.arpa udp
BE 88.221.83.192:443 www.bing.com tcp
US 8.8.8.8:53 192.83.221.88.in-addr.arpa udp
BE 88.221.83.178:443 www.bing.com tcp
US 8.8.8.8:53 20.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 178.83.221.88.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 105.193.132.51.in-addr.arpa udp

Files

memory/1112-0-0x00000000748C2000-0x00000000748C3000-memory.dmp

memory/1112-1-0x00000000748C0000-0x0000000074E71000-memory.dmp

memory/1112-2-0x00000000748C0000-0x0000000074E71000-memory.dmp

memory/1112-3-0x00000000748C0000-0x0000000074E71000-memory.dmp

C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe

MD5 20c623b02fce860bb3836e99cd501a55
SHA1 3e7c0a99615c08f1696e24366acf3d18927873c2
SHA256 cc6f2a257f1fe253ebdee60322ad9c9fd0a91da1648f9d0ea6f6c32ced24aa6d
SHA512 d3a9819edcac62b8b27e582598ee4970b7b4020e7b43a0f0908e9a40a40c98900a65b319375ec075f3b18bf45ad5f508c16ebd863286426d1b4c548946d01068

memory/1112-17-0x00000000748C0000-0x0000000074E71000-memory.dmp

memory/212-18-0x00000000748C0000-0x0000000074E71000-memory.dmp

memory/212-19-0x00000000748C0000-0x0000000074E71000-memory.dmp

memory/212-21-0x00000000748C0000-0x0000000074E71000-memory.dmp