agenttesla | f5815777d84f878c6c2d94c45c93352f563ab81ba2613e5063601a5d76f1637e

General

Target

astUwsubHkAYH.exe
Size

1007KB
MD5

aa1857577e2aa1b134e0627c862668e8
SHA1

9460cbe805c3014214b1cfa3e9eb7f17df99ff44
SHA256

f5815777d84f878c6c2d94c45c93352f563ab81ba2613e5063601a5d76f1637e
SHA512

9328a5f7689ea64a466efff9316d3ce9e28a272e422d8a1b50df7f1a26c82d12afe22a935f8360d7bf9ec1d6457033190d07ef6520ca5b26113829c8a359c18e
SSDEEP

24576:LATsIBMNjnNNOhAe/S0I1AuFdIeQCB6T7xczldUh3QFbVo5OrdMGuZ3WL8mcwE4+:J6WIeQC7UhAFRo5ORMGs3WJcA7

Score

10^/10

agenttesla collection discovery keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
premium76.web-hosting.com
Port:
587
Username:
[email protected]
Password:
FAg@zgAd+#rv
Email To:
[email protected]

Signatures

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	astUwsubHkAYH.exe

Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
spyware stealer

Data from Local System
T1005

Credentials in Registry
T1552.002
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
T1552.001
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
T1552.001
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	astUwsubHkAYH.exe
Key opened	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	astUwsubHkAYH.exe
Key opened	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	astUwsubHkAYH.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5088 set thread context of 724	5088	astUwsubHkAYH.exe	98

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	astUwsubHkAYH.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	astUwsubHkAYH.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
1036	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
5088	astUwsubHkAYH.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5088	astUwsubHkAYH.exe
Token: SeDebugPrivilege	724	astUwsubHkAYH.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 5088 wrote to memory of 1036	5088	astUwsubHkAYH.exe	96
PID 5088 wrote to memory of 1036	5088	astUwsubHkAYH.exe	96
PID 5088 wrote to memory of 1036	5088	astUwsubHkAYH.exe	96
PID 5088 wrote to memory of 724	5088	astUwsubHkAYH.exe	98
PID 5088 wrote to memory of 724	5088	astUwsubHkAYH.exe	98
PID 5088 wrote to memory of 724	5088	astUwsubHkAYH.exe	98
PID 5088 wrote to memory of 724	5088	astUwsubHkAYH.exe	98
PID 5088 wrote to memory of 724	5088	astUwsubHkAYH.exe	98
PID 5088 wrote to memory of 724	5088	astUwsubHkAYH.exe	98
PID 5088 wrote to memory of 724	5088	astUwsubHkAYH.exe	98
PID 5088 wrote to memory of 724	5088	astUwsubHkAYH.exe	98

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	astUwsubHkAYH.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	astUwsubHkAYH.exe

C:\Users\Admin\AppData\Local\Temp\astUwsubHkAYH.exe
"C:\Users\Admin\AppData\Local\Temp\astUwsubHkAYH.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5088
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\astUwsubHkAYH" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF462.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1036
- C:\Users\Admin\AppData\Local\Temp\astUwsubHkAYH.exe
  "{path}"
  2⤵
  - Accesses Microsoft Outlook profiles
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:724

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

4

T1552

Credentials In Files

3

T1552.001

Credentials in Registry

1

T1552.002

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpF462.tmp

Filesize
1KB

MD5
4040c1dc74a3edd9e50c5c4d17b47d4a

SHA1
5781ef28bad4416e9043c72d61e0ab5e09f22588

SHA256
9d396c89b40ec47da402406357888a30336585c78a4b5eb37b844fbb4da1c405

SHA512
2443adbd0b615661157fd7a842f32fe9e70bb6ef1a47aca7b5ed79cd1f7714be6576986dbc65dbdb5dea8abdd5f97b98eff432cb31522547990d7b25a1cd90ac

Download Submit
memory/724-24-0x0000000075210000-0x00000000759C0000-memory.dmp

Filesize
7.7MB

Download
memory/724-23-0x0000000007050000-0x0000000007212000-memory.dmp

Filesize
1.8MB

Download
memory/724-22-0x0000000006E30000-0x0000000006E80000-memory.dmp

Filesize
320KB

Download
memory/724-21-0x0000000075210000-0x00000000759C0000-memory.dmp

Filesize
7.7MB

Download
memory/724-20-0x0000000005950000-0x00000000059B6000-memory.dmp

Filesize
408KB

Download
memory/724-18-0x0000000075210000-0x00000000759C0000-memory.dmp

Filesize
7.7MB

Download
memory/724-16-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/5088-5-0x0000000004FB0000-0x0000000004FBA000-memory.dmp

Filesize
40KB

Download
memory/5088-6-0x00000000051D0000-0x0000000005226000-memory.dmp

Filesize
344KB

Download
memory/5088-10-0x0000000075210000-0x00000000759C0000-memory.dmp

Filesize
7.7MB

Download
memory/5088-11-0x0000000007D20000-0x0000000007DE2000-memory.dmp

Filesize
776KB

Download
memory/5088-12-0x000000000A340000-0x000000000A3BA000-memory.dmp

Filesize
488KB

Download
memory/5088-8-0x0000000005270000-0x000000000527E000-memory.dmp

Filesize
56KB

Download
memory/5088-7-0x0000000075210000-0x00000000759C0000-memory.dmp

Filesize
7.7MB

Download
memory/5088-9-0x000000007521E000-0x000000007521F000-memory.dmp

Filesize
4KB

Download
memory/5088-19-0x0000000075210000-0x00000000759C0000-memory.dmp

Filesize
7.7MB

Download
memory/5088-0-0x000000007521E000-0x000000007521F000-memory.dmp

Filesize
4KB

Download
memory/5088-4-0x0000000005080000-0x0000000005112000-memory.dmp

Filesize
584KB

Download
memory/5088-3-0x0000000005630000-0x0000000005BD4000-memory.dmp

Filesize
5.6MB

Download
memory/5088-2-0x0000000004FE0000-0x000000000507C000-memory.dmp

Filesize
624KB

Download
memory/5088-1-0x00000000004C0000-0x00000000005C2000-memory.dmp

Filesize
1.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads