Malware Analysis Report

2024-11-15 06:31

Sample ID 210106-e1z2fwkgzj
Target Build.exe
SHA256 d2b4d092f178023c22ec781d1ead02de46a5b5b159cc1930220e44d9f1168225
Tags
agenttesla echelon discovery keylogger spyware stealer trojan
score
7/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

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
7/10

SHA256

d2b4d092f178023c22ec781d1ead02de46a5b5b159cc1930220e44d9f1168225

Threat Level: Shows suspicious behavior

The file Build.exe was found to be: Shows suspicious behavior.

Malicious Activity Summary

agenttesla echelon discovery keylogger spyware stealer trojan

Echelon

AgentTesla

Echelon log file

AgentTesla Payload

Deletes itself

Reads user/profile data of web browsers

Looks up external IP address via web service

Checks installed software on the system

Suspicious use of NtSetInformationThreadHideFromDebugger

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Delays execution with timeout.exe

Modifies system certificate store

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2021-03-05 11:13

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2021-01-06 17:56

Reported

2021-01-06 17:57

Platform

win7v20201028

Max time kernel

86s

Max time network

87s

Command Line

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

Signatures

AgentTesla

keylogger trojan stealer spyware agenttesla

Echelon

stealer spyware echelon

AgentTesla Payload

keylogger stealer
Description Indicator Process Target
N/A N/A N/A N/A

Echelon log file

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

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\system32\cmd.exe N/A

Reads user/profile data of web browsers

spyware

Checks installed software on the system

discovery

Looks up external IP address via web service

Description Indicator Process Target
N/A api.ipify.org N/A N/A
N/A api.ipify.org N/A N/A
N/A ip-api.com N/A N/A
N/A api.ipify.org N/A N/A

Delays execution with timeout.exe

evasion
Description Indicator Process Target
N/A N/A C:\Windows\system32\timeout.exe N/A

Modifies system certificate store

evasion spyware trojan
Description Indicator Process Target
Set value (data) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\SystemCertificates\CA\Certificates\D89E3BD43D5D909B47A18977AA9D5CE36CEE184C\Blob = 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 C:\Users\Admin\AppData\Local\Temp\Build.exe N/A
Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\SystemCertificates\CA\Certificates\D89E3BD43D5D909B47A18977AA9D5CE36CEE184C C:\Users\Admin\AppData\Local\Temp\Build.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Build.exe N/A
Token: 33 N/A C:\Windows\system32\AUDIODG.EXE N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\system32\AUDIODG.EXE N/A
Token: 33 N/A C:\Windows\system32\AUDIODG.EXE N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\system32\AUDIODG.EXE N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2008 wrote to memory of 652 N/A C:\Users\Admin\AppData\Local\Temp\Build.exe C:\Windows\system32\cmd.exe
PID 2008 wrote to memory of 652 N/A C:\Users\Admin\AppData\Local\Temp\Build.exe C:\Windows\system32\cmd.exe
PID 2008 wrote to memory of 652 N/A C:\Users\Admin\AppData\Local\Temp\Build.exe C:\Windows\system32\cmd.exe
PID 652 wrote to memory of 1972 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\timeout.exe
PID 652 wrote to memory of 1972 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\timeout.exe
PID 652 wrote to memory of 1972 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\timeout.exe

Processes

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

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

C:\Windows\system32\cmd.exe

cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp66BF.tmp.cmd""

C:\Windows\system32\timeout.exe

timeout 4

C:\Windows\system32\LogonUI.exe

"LogonUI.exe" /flags:0x0

C:\Windows\system32\AUDIODG.EXE

C:\Windows\system32\AUDIODG.EXE 0x560

C:\Windows\system32\LogonUI.exe

"LogonUI.exe" /flags:0x1

Network

Country Destination Domain Proto
N/A 8.8.8.8:53 api.ipify.org udp
N/A 54.243.164.148:443 api.ipify.org tcp
N/A 8.8.8.8:53 www.download.windowsupdate.com udp
N/A 8.8.8.8:53 ip-api.com udp
N/A 208.95.112.1:80 ip-api.com tcp
N/A 54.243.164.148:443 api.ipify.org tcp
N/A 8.8.8.8:53 g.api.mega.co.nz udp
N/A 66.203.125.13:443 g.api.mega.co.nz tcp
N/A 8.8.8.8:53 gfs270n070.userstorage.mega.co.nz udp
N/A 89.44.168.211:80 gfs270n070.userstorage.mega.co.nz tcp

Files

memory/2008-2-0x000007FEF55E0000-0x000007FEF5FCC000-memory.dmp

memory/2008-3-0x0000000000390000-0x0000000000391000-memory.dmp

memory/2008-5-0x000000001AF60000-0x000000001B06A000-memory.dmp

memory/652-6-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Local\Temp\tmp66BF.tmp.cmd

MD5 88f63ee2513c67d4c84d87560ba2cc33
SHA1 9e08c0cf906ae36c85e66ab8ddd458b3cce3e65a
SHA256 161c17781e42c75096ebe2f34c35fe0d035d5d76baa176cf784aa4eacbdf9edc
SHA512 c1344366005f896f333272b0377d4b2086c9c5ae859baf0f34f3893d496097292b78a55bda0bae7a51e4c159134bf01cc086d6fca38aa2170fb7b9670f17ba8d

memory/1972-8-0x0000000000000000-mapping.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2021-01-06 17:56

Reported

2021-01-06 17:58

Platform

win10v20201028

Max time kernel

21s

Max time network

42s

Command Line

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

Signatures

Reads user/profile data of web browsers

spyware

Checks installed software on the system

discovery

Looks up external IP address via web service

Description Indicator Process Target
N/A api.ipify.org N/A N/A
N/A api.ipify.org N/A N/A

Suspicious use of AdjustPrivilegeToken

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

Processes

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

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

Network

Country Destination Domain Proto
N/A 8.8.8.8:53 api.ipify.org udp
N/A 54.221.253.252:443 api.ipify.org tcp

Files

memory/972-2-0x00007FFA6B300000-0x00007FFA6BCEC000-memory.dmp

memory/972-3-0x00000000007C0000-0x00000000007C1000-memory.dmp

memory/972-5-0x000000001B4E0000-0x000000001B5EA000-memory.dmp