agenttesla | 4efcea29ba8f3df966cb86748233b9d5f85767341dc83f0d4f46bf9eee6ee556

General

Target

4efcea29ba8f3df966cb86748233b9d5f85767341dc83f0d4f46bf9eee6ee556.exe
Size

1.4MB
MD5

bff2b660edd464c391cf5059f1e16936
SHA1

03f23d669f71532329f2d00f616c80ae613263e8
SHA256

4efcea29ba8f3df966cb86748233b9d5f85767341dc83f0d4f46bf9eee6ee556
SHA512

29f2ca52cb9562fd196163ea012d94e5d17060955610b9f6cbcf63f6196d40c3f9e6b2bea61453a8d5b4d21ba58242e976ec552a84a06a9d9ed2f58530aac05c
SSDEEP

24576:jAHnh+eWsN3skA4RV1Hom2KXMmHab32MryMOEibPMVrS9Wqn25:uh+ZkldoPK8YabZqs

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla

AgentTesla payload 15 IoCs

Processes:

resource	yara_rule
behavioral1/memory/648-57-0x0000000000090000-0x00000000000DC000-memory.dmp	family_agenttesla
behavioral1/memory/648-62-0x00000000000D711E-mapping.dmp	family_agenttesla
behavioral1/memory/648-63-0x0000000000090000-0x00000000000DC000-memory.dmp	family_agenttesla
behavioral1/memory/648-64-0x0000000000090000-0x00000000000DC000-memory.dmp	family_agenttesla
behavioral1/memory/648-66-0x0000000000090000-0x00000000000DC000-memory.dmp	family_agenttesla
behavioral1/memory/648-67-0x0000000000090000-0x00000000000DC000-memory.dmp	family_agenttesla
behavioral1/memory/648-70-0x0000000000090000-0x00000000000DC000-memory.dmp	family_agenttesla
behavioral1/memory/648-72-0x0000000000090000-0x00000000000DC000-memory.dmp	family_agenttesla
behavioral1/memory/648-68-0x0000000000090000-0x00000000000DC000-memory.dmp	family_agenttesla
behavioral1/memory/648-74-0x0000000000090000-0x00000000000DC000-memory.dmp	family_agenttesla
behavioral1/memory/648-75-0x0000000000090000-0x00000000000DC000-memory.dmp	family_agenttesla
behavioral1/memory/648-78-0x0000000000090000-0x00000000000DC000-memory.dmp	family_agenttesla
behavioral1/memory/648-80-0x0000000000090000-0x00000000000DC000-memory.dmp	family_agenttesla
behavioral1/memory/648-81-0x0000000000090000-0x00000000000DC000-memory.dmp	family_agenttesla
behavioral1/memory/648-83-0x0000000000090000-0x00000000000DC000-memory.dmp	family_agenttesla

Drops startup file 1 IoCs

Processes:

4efcea29ba8f3df966cb86748233b9d5f85767341dc83f0d4f46bf9eee6ee556.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\DXCap.url	4efcea29ba8f3df966cb86748233b9d5f85767341dc83f0d4f46bf9eee6ee556.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

RegAsm.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

RegAsm.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\msbuild = "C:\\Users\\Admin\\AppData\\Local\\Temp\\msbuild\\msbuild.exe"	RegAsm.exe

Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

4 checkip.amazonaws.com

flow	ioc
4	checkip.amazonaws.com

Suspicious use of SetThreadContext 1 IoCs

Processes:

4efcea29ba8f3df966cb86748233b9d5f85767341dc83f0d4f46bf9eee6ee556.exe

description	pid	process	target process
PID 1104 set thread context of 648	1104	4efcea29ba8f3df966cb86748233b9d5f85767341dc83f0d4f46bf9eee6ee556.exe	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

4efcea29ba8f3df966cb86748233b9d5f85767341dc83f0d4f46bf9eee6ee556.exeRegAsm.exe

pid	process
1104	4efcea29ba8f3df966cb86748233b9d5f85767341dc83f0d4f46bf9eee6ee556.exe
1104	4efcea29ba8f3df966cb86748233b9d5f85767341dc83f0d4f46bf9eee6ee556.exe
648	RegAsm.exe
648	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegAsm.exe

description pid process

Token: SeDebugPrivilege 648 RegAsm.exe

description	pid	process
Token: SeDebugPrivilege	648	RegAsm.exe

Suspicious use of FindShellTrayWindow 3 IoCs

Processes:

4efcea29ba8f3df966cb86748233b9d5f85767341dc83f0d4f46bf9eee6ee556.exe

pid	process
1104	4efcea29ba8f3df966cb86748233b9d5f85767341dc83f0d4f46bf9eee6ee556.exe
1104	4efcea29ba8f3df966cb86748233b9d5f85767341dc83f0d4f46bf9eee6ee556.exe
1104	4efcea29ba8f3df966cb86748233b9d5f85767341dc83f0d4f46bf9eee6ee556.exe

Suspicious use of SendNotifyMessage 3 IoCs

Processes:

4efcea29ba8f3df966cb86748233b9d5f85767341dc83f0d4f46bf9eee6ee556.exe

pid	process
1104	4efcea29ba8f3df966cb86748233b9d5f85767341dc83f0d4f46bf9eee6ee556.exe
1104	4efcea29ba8f3df966cb86748233b9d5f85767341dc83f0d4f46bf9eee6ee556.exe
1104	4efcea29ba8f3df966cb86748233b9d5f85767341dc83f0d4f46bf9eee6ee556.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

RegAsm.exe

pid process

648 RegAsm.exe

pid	process
648	RegAsm.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

4efcea29ba8f3df966cb86748233b9d5f85767341dc83f0d4f46bf9eee6ee556.exe

description	pid	process	target process
PID 1104 wrote to memory of 648	1104	4efcea29ba8f3df966cb86748233b9d5f85767341dc83f0d4f46bf9eee6ee556.exe	RegAsm.exe
PID 1104 wrote to memory of 648	1104	4efcea29ba8f3df966cb86748233b9d5f85767341dc83f0d4f46bf9eee6ee556.exe	RegAsm.exe
PID 1104 wrote to memory of 648	1104	4efcea29ba8f3df966cb86748233b9d5f85767341dc83f0d4f46bf9eee6ee556.exe	RegAsm.exe
PID 1104 wrote to memory of 648	1104	4efcea29ba8f3df966cb86748233b9d5f85767341dc83f0d4f46bf9eee6ee556.exe	RegAsm.exe
PID 1104 wrote to memory of 648	1104	4efcea29ba8f3df966cb86748233b9d5f85767341dc83f0d4f46bf9eee6ee556.exe	RegAsm.exe
PID 1104 wrote to memory of 648	1104	4efcea29ba8f3df966cb86748233b9d5f85767341dc83f0d4f46bf9eee6ee556.exe	RegAsm.exe
PID 1104 wrote to memory of 648	1104	4efcea29ba8f3df966cb86748233b9d5f85767341dc83f0d4f46bf9eee6ee556.exe	RegAsm.exe
PID 1104 wrote to memory of 648	1104	4efcea29ba8f3df966cb86748233b9d5f85767341dc83f0d4f46bf9eee6ee556.exe	RegAsm.exe
PID 1104 wrote to memory of 648	1104	4efcea29ba8f3df966cb86748233b9d5f85767341dc83f0d4f46bf9eee6ee556.exe	RegAsm.exe

outlook_office_path 1 IoCs

Processes:

RegAsm.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

outlook_win_path 1 IoCs

Processes:

RegAsm.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\4efcea29ba8f3df966cb86748233b9d5f85767341dc83f0d4f46bf9eee6ee556.exe
"C:\Users\Admin\AppData\Local\Temp\4efcea29ba8f3df966cb86748233b9d5f85767341dc83f0d4f46bf9eee6ee556.exe"
1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1104

C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
PID:648

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/648-69-0x00000000742A0000-0x000000007484B000-memory.dmp

Filesize
5.7MB

Download
memory/648-84-0x00000000742A0000-0x000000007484B000-memory.dmp

Filesize
5.7MB

Download
memory/648-70-0x0000000000090000-0x00000000000DC000-memory.dmp

Filesize
304KB

Download
memory/648-62-0x00000000000D711E-mapping.dmp

Download
memory/648-63-0x0000000000090000-0x00000000000DC000-memory.dmp

Filesize
304KB

Download
memory/648-64-0x0000000000090000-0x00000000000DC000-memory.dmp

Filesize
304KB

Download
memory/648-66-0x0000000000090000-0x00000000000DC000-memory.dmp

Filesize
304KB

Download
memory/648-67-0x0000000000090000-0x00000000000DC000-memory.dmp

Filesize
304KB

Download
memory/648-57-0x0000000000090000-0x00000000000DC000-memory.dmp

Filesize
304KB

Download
memory/648-55-0x0000000000090000-0x00000000000DC000-memory.dmp

Filesize
304KB

Download
memory/648-68-0x0000000000090000-0x00000000000DC000-memory.dmp

Filesize
304KB

Download
memory/648-72-0x0000000000090000-0x00000000000DC000-memory.dmp

Filesize
304KB

Download
memory/648-74-0x0000000000090000-0x00000000000DC000-memory.dmp

Filesize
304KB

Download
memory/648-75-0x0000000000090000-0x00000000000DC000-memory.dmp

Filesize
304KB

Download
memory/648-78-0x0000000000090000-0x00000000000DC000-memory.dmp

Filesize
304KB

Download
memory/648-80-0x0000000000090000-0x00000000000DC000-memory.dmp

Filesize
304KB

Download
memory/648-81-0x0000000000090000-0x00000000000DC000-memory.dmp

Filesize
304KB

Download
memory/648-83-0x0000000000090000-0x00000000000DC000-memory.dmp

Filesize
304KB

Download
memory/1104-54-0x0000000075BB1000-0x0000000075BB3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads