agenttesla | cc366f74f3a57b174cfcb3d769ed5042e4e3b3f3daf611574d5ee6f09be8ea39

General

Target

Purchase Order.exe
Size

598KB
MD5

fe5426be581da9253481c54aaabcd47d
SHA1

952d80126435cb1bf5be98dc15e37d93410b1ef3
SHA256

d5525bf39c73e96c70c1426c09e3431fcc7853b1f9920577aa3cd4596f209762
SHA512

e39fc25d4ad6d8b76d543fb113631983f77a2043aacfabd495da485ce6808b089c1253f7e2c961e1147187ed5b498e525ea758720b49dca756ca8b45b9f6af0c

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Credentials

Protocol: smtp
Host:
smtp.yandex.com
Port:
587
Username:
[email protected]
Password:
Safirxxx01

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.yandex.com
Port:
587
Username:
[email protected]
Password:
Safirxxx01

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
behavioral4/memory/4268-138-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla

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:

Purchase Order.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	Purchase Order.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:

Purchase Order.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Purchase Order.exe
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Purchase Order.exe
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Purchase Order.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Purchase Order.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\YYtJku = "C:\\Users\\Admin\\AppData\\Roaming\\YYtJku\\YYtJku.exe"	Purchase Order.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Purchase Order.exe

description pid process target process

PID 4920 set thread context of 4268 4920 Purchase Order.exe Purchase Order.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

4568 schtasks.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

Purchase Order.exePurchase Order.exe

pid process

4920 Purchase Order.exe
4920 Purchase Order.exe
4920 Purchase Order.exe
4268 Purchase Order.exe
4268 Purchase Order.exe
Suspicious behavior: RenamesItself 1 IoCs

Processes:

Purchase Order.exe

pid process

4268 Purchase Order.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Purchase Order.exePurchase Order.exe

description pid process

Token: SeDebugPrivilege 4920 Purchase Order.exe
Token: SeDebugPrivilege 4268 Purchase Order.exe

description	pid	process	target process
PID 4920 set thread context of 4268	4920	Purchase Order.exe	Purchase Order.exe

pid	process
4568	schtasks.exe

pid	process
4920	Purchase Order.exe
4920	Purchase Order.exe
4920	Purchase Order.exe
4268	Purchase Order.exe
4268	Purchase Order.exe

pid	process
4268	Purchase Order.exe

description	pid	process
Token: SeDebugPrivilege	4920	Purchase Order.exe
Token: SeDebugPrivilege	4268	Purchase Order.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

Purchase Order.exe

description	pid	process	target process
PID 4920 wrote to memory of 4568	4920	Purchase Order.exe	schtasks.exe
PID 4920 wrote to memory of 4568	4920	Purchase Order.exe	schtasks.exe
PID 4920 wrote to memory of 4568	4920	Purchase Order.exe	schtasks.exe
PID 4920 wrote to memory of 4268	4920	Purchase Order.exe	Purchase Order.exe
PID 4920 wrote to memory of 4268	4920	Purchase Order.exe	Purchase Order.exe
PID 4920 wrote to memory of 4268	4920	Purchase Order.exe	Purchase Order.exe
PID 4920 wrote to memory of 4268	4920	Purchase Order.exe	Purchase Order.exe
PID 4920 wrote to memory of 4268	4920	Purchase Order.exe	Purchase Order.exe
PID 4920 wrote to memory of 4268	4920	Purchase Order.exe	Purchase Order.exe
PID 4920 wrote to memory of 4268	4920	Purchase Order.exe	Purchase Order.exe
PID 4920 wrote to memory of 4268	4920	Purchase Order.exe	Purchase Order.exe

outlook_office_path 1 IoCs

Processes:

Purchase Order.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Purchase Order.exe

outlook_win_path 1 IoCs

Processes:

Purchase Order.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Purchase Order.exe

C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
"C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4920

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\lvnnHggXotaD" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6F92.tmp"
2⤵
- Creates scheduled task(s)
PID:4568

C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:4268

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

1

T1060

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

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\Microsoft\CLR_v4.0_32\UsageLogs\Purchase Order.exe.log
Filesize
1KB

MD5
8ec831f3e3a3f77e4a7b9cd32b48384c

SHA1
d83f09fd87c5bd86e045873c231c14836e76a05c

SHA256
7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

SHA512
26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp6F92.tmp
Filesize
1KB

MD5
2758468a742c7e27d409f569ba0acc96

SHA1
b24c1724eff242872f5a61a562ee8ee0e0fdc677

SHA256
ddb49a151f7d56cce0e803a811332b96fec63721d2cd82f534217f1e593ec88d

SHA512
dba5e3427faa15803b6034d5688bbeca9c10696d7916f7a25387f02f7942218aff949cc0d20ae5e82cb7a1990004c1f34202653269cfe1361ce3c07a4b41766b

Download Submit
memory/4268-137-0x0000000000000000-mapping.dmp

Download
memory/4268-138-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4268-140-0x00000000060F0000-0x0000000006156000-memory.dmp

Filesize
408KB

Download
memory/4268-141-0x0000000006980000-0x00000000069D0000-memory.dmp

Filesize
320KB

Download
memory/4568-135-0x0000000000000000-mapping.dmp

Download
memory/4920-130-0x0000000000500000-0x000000000059C000-memory.dmp

Filesize
624KB

Download
memory/4920-131-0x0000000005660000-0x0000000005C04000-memory.dmp

Filesize
5.6MB

Download
memory/4920-132-0x0000000004F80000-0x0000000005012000-memory.dmp

Filesize
584KB

Download
memory/4920-133-0x0000000004F50000-0x0000000004F5A000-memory.dmp

Filesize
40KB

Download
memory/4920-134-0x0000000007C80000-0x0000000007D1C000-memory.dmp

Filesize
624KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads