agenttesla | d4023ad4b61e07c4b45673cde0069e4acff8096e0578083ed614f1143a434c40

General

Target

DO1021.exe
Size

780KB
MD5

990c9fb69884ecca7649e09a19a1fdaf
SHA1

730d6bc292b7e9d0777d1499d376109220d4db06
SHA256

d4023ad4b61e07c4b45673cde0069e4acff8096e0578083ed614f1143a434c40
SHA512

0bdaac39d0c1afbe10cbe30dfa246284875191a90e92f80d1f09e8c13177b080a23d17fb59053432cf0c58e11d51125aaf73e656b840f0732ef4c04d3218014e

Score

10^/10

agenttesla agilenet collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.merchantexint.com
Port:
587
Username:
[email protected]
Password:
merW&13@

Signatures

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

AgentTesla Payload 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/336-63-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/336-64-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/336-65-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/336-66-0x000000000043746E-mapping.dmp	family_agenttesla
behavioral1/memory/336-69-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

Executes dropped EXE 1 IoCs

Processes:

InstallUtil.exe

pid process

336 InstallUtil.exe
Loads dropped DLL 1 IoCs

Processes:

DO1021.exe

pid process

1376 DO1021.exe

pid	process
336	InstallUtil.exe

pid	process
1376	DO1021.exe

Obfuscated with Agile.Net obfuscator 1 IoCs

Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

agilenet

Processes:

resource	yara_rule
behavioral1/memory/1376-56-0x0000000004300000-0x0000000004321000-memory.dmp	agile_net

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:

InstallUtil.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

InstallUtil.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows\CurrentVersion\Run\hZpzJs = "C:\\Users\\Admin\\AppData\\Roaming\\hZpzJs\\hZpzJs.exe"	InstallUtil.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

DO1021.exe

description pid process target process

PID 1376 set thread context of 336 1376 DO1021.exe InstallUtil.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

DO1021.exeInstallUtil.exe

pid process

1376 DO1021.exe
1376 DO1021.exe
336 InstallUtil.exe
336 InstallUtil.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

DO1021.exeInstallUtil.exe

description pid process

Token: SeDebugPrivilege 1376 DO1021.exe
Token: SeDebugPrivilege 336 InstallUtil.exe

description	pid	process	target process
PID 1376 set thread context of 336	1376	DO1021.exe	InstallUtil.exe

pid	process
1376	DO1021.exe
1376	DO1021.exe
336	InstallUtil.exe
336	InstallUtil.exe

description	pid	process
Token: SeDebugPrivilege	1376	DO1021.exe
Token: SeDebugPrivilege	336	InstallUtil.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

DO1021.exe

description	pid	process	target process
PID 1376 wrote to memory of 336	1376	DO1021.exe	InstallUtil.exe
PID 1376 wrote to memory of 336	1376	DO1021.exe	InstallUtil.exe
PID 1376 wrote to memory of 336	1376	DO1021.exe	InstallUtil.exe
PID 1376 wrote to memory of 336	1376	DO1021.exe	InstallUtil.exe
PID 1376 wrote to memory of 336	1376	DO1021.exe	InstallUtil.exe
PID 1376 wrote to memory of 336	1376	DO1021.exe	InstallUtil.exe
PID 1376 wrote to memory of 336	1376	DO1021.exe	InstallUtil.exe
PID 1376 wrote to memory of 336	1376	DO1021.exe	InstallUtil.exe
PID 1376 wrote to memory of 336	1376	DO1021.exe	InstallUtil.exe
PID 1376 wrote to memory of 336	1376	DO1021.exe	InstallUtil.exe
PID 1376 wrote to memory of 336	1376	DO1021.exe	InstallUtil.exe
PID 1376 wrote to memory of 336	1376	DO1021.exe	InstallUtil.exe

outlook_office_path 1 IoCs

Processes:

InstallUtil.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

outlook_win_path 1 IoCs

Processes:

InstallUtil.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\DO1021.exe
"C:\Users\Admin\AppData\Local\Temp\DO1021.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1376

C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
"C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
2⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:336

Network

MITRE ATT&CK Matrix ATT&CK 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

3

T1005

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
\Users\Admin\AppData\Local\Temp\InstallUtil.exe
MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
memory/336-66-0x000000000043746E-mapping.dmp

Download
memory/336-64-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/336-72-0x0000000004B31000-0x0000000004B32000-memory.dmp

Filesize
4KB

Download
memory/336-71-0x0000000004B30000-0x0000000004B31000-memory.dmp

Filesize
4KB

Download
memory/336-61-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/336-62-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/336-63-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/336-69-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/336-65-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1376-53-0x0000000000DF0000-0x0000000000DF1000-memory.dmp

Filesize
4KB

Download
memory/1376-56-0x0000000004300000-0x0000000004321000-memory.dmp

Filesize
132KB

Download
memory/1376-55-0x0000000000C40000-0x0000000000C41000-memory.dmp

Filesize
4KB

Download
memory/1376-58-0x0000000000690000-0x000000000069B000-memory.dmp

Filesize
44KB

Download
memory/1376-57-0x0000000000C41000-0x0000000000C42000-memory.dmp

Filesize
4KB

Download
memory/1376-59-0x0000000000B30000-0x0000000000B31000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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