agenttesla | 68f190b3fd347501e6735d88d9ca580a9745d4371b0b28626533ec278ef48805

General

Target

PI . 290.pdf.exe
Size

658KB
MD5

165a8076aefc984b43248293ffe0fe04
SHA1

5c5f6a1d70db1493f3d9f3a0f17b6afdba2727b9
SHA256

5889fd00dbdb63d2e655258fac2143f291c1f94d515c8a94707f3c439fde5932
SHA512

337b467b703261bc311d45811901f55ec452a3f6dbcd6717969f9ead9738ed2be7c9e7052dd03fa07ececd366f0e7278aafa80b1e41ebb3bc015b2c37f502055

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.bestinjectionmachines.com
Port:
587
Username:
v6engine@bestinjectionmachines.com
Password:
wN{qPRgN7Lo~

Signatures

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

AgentTesla Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4316-140-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla

Executes dropped EXE 2 IoCs

Processes:

appli.exeRegAsm.exe

pid process

1508 appli.exe
4316 RegAsm.exe

pid	process
1508	appli.exe
4316	RegAsm.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

PI . 290.pdf.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	PI . 290.pdf.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-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

RegAsm.exereg.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\uWWL = "C:\\Users\\Admin\\AppData\\Roaming\\uWWL\\uWWL.exe"	RegAsm.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\appli = "C:\\Windows\\system32\\pcalua.exe -a C:\\Windows\\SysWOW64\\appli.exe"	reg.exe

Drops file in System32 directory 2 IoCs

Processes:

PI . 290.pdf.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\appli.exe	PI . 290.pdf.exe
File created	C:\Windows\SysWOW64\appli.exe	PI . 290.pdf.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

appli.exe

description pid process target process

PID 1508 set thread context of 4316 1508 appli.exe RegAsm.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	pid	process	target process
PID 1508 set thread context of 4316	1508	appli.exe	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 27 IoCs

Processes:

PI . 290.pdf.exeappli.exeRegAsm.exe

pid	process
4024	PI . 290.pdf.exe
4024	PI . 290.pdf.exe
4024	PI . 290.pdf.exe
4024	PI . 290.pdf.exe
4024	PI . 290.pdf.exe
4024	PI . 290.pdf.exe
4024	PI . 290.pdf.exe
4024	PI . 290.pdf.exe
4024	PI . 290.pdf.exe
4024	PI . 290.pdf.exe
4024	PI . 290.pdf.exe
4024	PI . 290.pdf.exe
4024	PI . 290.pdf.exe
4024	PI . 290.pdf.exe
4024	PI . 290.pdf.exe
4024	PI . 290.pdf.exe
4024	PI . 290.pdf.exe
4024	PI . 290.pdf.exe
4024	PI . 290.pdf.exe
4024	PI . 290.pdf.exe
4024	PI . 290.pdf.exe
4024	PI . 290.pdf.exe
1508	appli.exe
1508	appli.exe
1508	appli.exe
4316	RegAsm.exe
4316	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

PI . 290.pdf.exeappli.exeRegAsm.exe

description pid process

Token: SeDebugPrivilege 4024 PI . 290.pdf.exe
Token: SeDebugPrivilege 1508 appli.exe
Token: SeDebugPrivilege 4316 RegAsm.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

RegAsm.exe

pid process

4316 RegAsm.exe

description	pid	process
Token: SeDebugPrivilege	4024	PI . 290.pdf.exe
Token: SeDebugPrivilege	1508	appli.exe
Token: SeDebugPrivilege	4316	RegAsm.exe

pid	process
4316	RegAsm.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

PI . 290.pdf.execmd.exeappli.exe

description	pid	process	target process
PID 4024 wrote to memory of 1016	4024	PI . 290.pdf.exe	cmd.exe
PID 4024 wrote to memory of 1016	4024	PI . 290.pdf.exe	cmd.exe
PID 4024 wrote to memory of 1016	4024	PI . 290.pdf.exe	cmd.exe
PID 1016 wrote to memory of 1972	1016	cmd.exe	reg.exe
PID 1016 wrote to memory of 1972	1016	cmd.exe	reg.exe
PID 1016 wrote to memory of 1972	1016	cmd.exe	reg.exe
PID 4024 wrote to memory of 1508	4024	PI . 290.pdf.exe	appli.exe
PID 4024 wrote to memory of 1508	4024	PI . 290.pdf.exe	appli.exe
PID 4024 wrote to memory of 1508	4024	PI . 290.pdf.exe	appli.exe
PID 1508 wrote to memory of 4316	1508	appli.exe	RegAsm.exe
PID 1508 wrote to memory of 4316	1508	appli.exe	RegAsm.exe
PID 1508 wrote to memory of 4316	1508	appli.exe	RegAsm.exe
PID 1508 wrote to memory of 4316	1508	appli.exe	RegAsm.exe
PID 1508 wrote to memory of 4316	1508	appli.exe	RegAsm.exe
PID 1508 wrote to memory of 4316	1508	appli.exe	RegAsm.exe
PID 1508 wrote to memory of 4316	1508	appli.exe	RegAsm.exe
PID 1508 wrote to memory of 4316	1508	appli.exe	RegAsm.exe

outlook_office_path 1 IoCs

Processes:

RegAsm.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\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-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\PI . 290.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\PI . 290.pdf.exe"
1⤵
- Checks computer location settings
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4024

C:\Windows\SysWOW64\cmd.exe
"cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v appli /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Windows\SysWOW64\appli.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:1016

C:\Windows\SysWOW64\reg.exe
REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v appli /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Windows\SysWOW64\appli.exe"
3⤵
- Adds Run key to start application
PID:1972

C:\Windows\SysWOW64\appli.exe
"C:\Windows\SysWOW64\appli.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1508

C:\Users\Admin\AppData\Local\Temp\RegAsm.exe
"C:\Users\Admin\AppData\Local\Temp\RegAsm.exe"
3⤵
- Executes dropped EXE
- 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:4316

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

Query Registry

1

T1012

System Information Discovery

2

T1082

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\RegAsm.exe
Filesize
63KB

MD5
0d5df43af2916f47d00c1573797c1a13

SHA1
230ab5559e806574d26b4c20847c368ed55483b0

SHA256
c066aee7aa3aa83f763ebc5541daa266ed6c648fbffcde0d836a13b221bb2adc

SHA512
f96cf9e1890746b12daf839a6d0f16f062b72c1b8a40439f96583f242980f10f867720232a6fa0f7d4d7ac0a7a6143981a5a130d6417ea98b181447134c7cfe2

Download Submit
C:\Users\Admin\AppData\Local\Temp\RegAsm.exe
Filesize
63KB

MD5
0d5df43af2916f47d00c1573797c1a13

SHA1
230ab5559e806574d26b4c20847c368ed55483b0

SHA256
c066aee7aa3aa83f763ebc5541daa266ed6c648fbffcde0d836a13b221bb2adc

SHA512
f96cf9e1890746b12daf839a6d0f16f062b72c1b8a40439f96583f242980f10f867720232a6fa0f7d4d7ac0a7a6143981a5a130d6417ea98b181447134c7cfe2

Download Submit
C:\Windows\SysWOW64\appli.exe
Filesize
658KB

MD5
165a8076aefc984b43248293ffe0fe04

SHA1
5c5f6a1d70db1493f3d9f3a0f17b6afdba2727b9

SHA256
5889fd00dbdb63d2e655258fac2143f291c1f94d515c8a94707f3c439fde5932

SHA512
337b467b703261bc311d45811901f55ec452a3f6dbcd6717969f9ead9738ed2be7c9e7052dd03fa07ececd366f0e7278aafa80b1e41ebb3bc015b2c37f502055

Download Submit
C:\Windows\SysWOW64\appli.exe
Filesize
658KB

MD5
165a8076aefc984b43248293ffe0fe04

SHA1
5c5f6a1d70db1493f3d9f3a0f17b6afdba2727b9

SHA256
5889fd00dbdb63d2e655258fac2143f291c1f94d515c8a94707f3c439fde5932

SHA512
337b467b703261bc311d45811901f55ec452a3f6dbcd6717969f9ead9738ed2be7c9e7052dd03fa07ececd366f0e7278aafa80b1e41ebb3bc015b2c37f502055

Download Submit
memory/1016-134-0x0000000000000000-mapping.dmp

Download
memory/1508-136-0x0000000000000000-mapping.dmp

Download
memory/1972-135-0x0000000000000000-mapping.dmp

Download
memory/4024-132-0x0000000007CB0000-0x0000000007D42000-memory.dmp

Filesize
584KB

Download
memory/4024-133-0x0000000005180000-0x00000000051C4000-memory.dmp

Filesize
272KB

Download
memory/4024-130-0x0000000000C90000-0x0000000000D3A000-memory.dmp

Filesize
680KB

Download
memory/4024-131-0x00000000081C0000-0x0000000008764000-memory.dmp

Filesize
5.6MB

Download
memory/4316-140-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4316-139-0x0000000000000000-mapping.dmp

Download
memory/4316-143-0x0000000005800000-0x000000000589C000-memory.dmp

Filesize
624KB

Download
memory/4316-144-0x0000000005B10000-0x0000000005B76000-memory.dmp

Filesize
408KB

Download
memory/4316-145-0x0000000006B20000-0x0000000006B70000-memory.dmp

Filesize
320KB

Download
memory/4316-146-0x0000000006AD0000-0x0000000006ADA000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads