agenttesla | f53448d68d4ed895231343d65065c4a82aa91b464f45ec051cbb15fb5ba1bf06

General

Target

PO 867665#.exe
Size

480KB
MD5

c42a24e45966ba0b198b8b6bf35c6cc1
SHA1

4af5d0d30c9cbd2a1409453f22f62aeddaab2705
SHA256

5b1b8f25badc68e5ea51912e4d56c879a1a2e9ba3743c87a5c31843bb0ab099f
SHA512

79005a949dceef1f1796a42b1ef33451d582fcf6068d8ed17d61dd9a203bab2a1578e348a631513b11452d95830c0b9d3c370a0875564834d4464fc94171c0a5

Score

10^/10

agenttesla collection evasion keylogger spyware stealer trojan

Malware Config

Extracted

Credentials

Protocol: smtp
Host:
mail.fakly-cambodia.com
Port:
587
Username:
[email protected]
Password:
Mmhh#2014

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.fakly-cambodia.com
Port:
587
Username:
[email protected]
Password:
Mmhh#2014

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/216-139-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

PO 867665#.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	PO 867665#.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	PO 867665#.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:

PO 867665#.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	PO 867665#.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:

PO 867665#.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO 867665#.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO 867665#.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO 867665#.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

PO 867665#.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	PO 867665#.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	PO 867665#.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

PO 867665#.exe

description pid process target process

PID 4144 set thread context of 216 4144 PO 867665#.exe PO 867665#.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

4828 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

PO 867665#.exePO 867665#.exe

pid process

4144 PO 867665#.exe
216 PO 867665#.exe
216 PO 867665#.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

PO 867665#.exePO 867665#.exe

description pid process

Token: SeDebugPrivilege 4144 PO 867665#.exe
Token: SeDebugPrivilege 216 PO 867665#.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

PO 867665#.exe

pid process

216 PO 867665#.exe

description	pid	process	target process
PID 4144 set thread context of 216	4144	PO 867665#.exe	PO 867665#.exe

pid	process
4828	schtasks.exe

pid	process
4144	PO 867665#.exe
216	PO 867665#.exe
216	PO 867665#.exe

description	pid	process
Token: SeDebugPrivilege	4144	PO 867665#.exe
Token: SeDebugPrivilege	216	PO 867665#.exe

pid	process
216	PO 867665#.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

PO 867665#.exePO 867665#.exe

description	pid	process	target process
PID 4144 wrote to memory of 4828	4144	PO 867665#.exe	schtasks.exe
PID 4144 wrote to memory of 4828	4144	PO 867665#.exe	schtasks.exe
PID 4144 wrote to memory of 4828	4144	PO 867665#.exe	schtasks.exe
PID 4144 wrote to memory of 216	4144	PO 867665#.exe	PO 867665#.exe
PID 4144 wrote to memory of 216	4144	PO 867665#.exe	PO 867665#.exe
PID 4144 wrote to memory of 216	4144	PO 867665#.exe	PO 867665#.exe
PID 4144 wrote to memory of 216	4144	PO 867665#.exe	PO 867665#.exe
PID 4144 wrote to memory of 216	4144	PO 867665#.exe	PO 867665#.exe
PID 4144 wrote to memory of 216	4144	PO 867665#.exe	PO 867665#.exe
PID 4144 wrote to memory of 216	4144	PO 867665#.exe	PO 867665#.exe
PID 4144 wrote to memory of 216	4144	PO 867665#.exe	PO 867665#.exe
PID 216 wrote to memory of 3904	216	PO 867665#.exe	netsh.exe
PID 216 wrote to memory of 3904	216	PO 867665#.exe	netsh.exe
PID 216 wrote to memory of 3904	216	PO 867665#.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

PO 867665#.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	PO 867665#.exe

outlook_win_path 1 IoCs

Processes:

PO 867665#.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	PO 867665#.exe

C:\Users\Admin\AppData\Local\Temp\PO 867665#.exe
"C:\Users\Admin\AppData\Local\Temp\PO 867665#.exe"
1⤵
- Checks BIOS information in registry
- Checks computer location settings
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4144
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\IKRiqY" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB5B3.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:4828
- C:\Users\Admin\AppData\Local\Temp\PO 867665#.exe
  "{path}"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  - outlook_office_path
  - outlook_win_path
  PID:216
- - C:\Windows\SysWOW64\netsh.exe
    "netsh" wlan show profile
    3⤵
    PID:3904

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Credentials in Files

3

T1081

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

4

T1082

Virtualization/Sandbox Evasion

2

T1497

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\tmpB5B3.tmp

Filesize
1KB

MD5
c411ae9898f9b167ba635ac2729afc1b

SHA1
b5c52dbe6a783a6818401416ea5e4b664ba81e89

SHA256
78e72980e160921990c7d65e87425aa219446305f6dda644eb4d1cc8afdcc46b

SHA512
d11ac858452132064eb78d8700433c4cc61ca161252e0c448cbac4c76f7486920a944644593936eb5f4edd39c226356e5889c3c73f546761f8407f6d74276cb5

Download Submit
memory/216-138-0x0000000000000000-mapping.dmp

Download
memory/216-139-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/216-141-0x0000000006660000-0x00000000066B0000-memory.dmp

Filesize
320KB

Download
memory/3904-140-0x0000000000000000-mapping.dmp

Download
memory/4144-130-0x0000000000CB0000-0x0000000000D2E000-memory.dmp

Filesize
504KB

Download
memory/4144-131-0x0000000005D20000-0x00000000062C4000-memory.dmp

Filesize
5.6MB

Download
memory/4144-132-0x00000000056C0000-0x0000000005752000-memory.dmp

Filesize
584KB

Download
memory/4144-133-0x0000000005780000-0x000000000578A000-memory.dmp

Filesize
40KB

Download
memory/4144-134-0x0000000006400000-0x000000000649C000-memory.dmp

Filesize
624KB

Download
memory/4144-135-0x0000000005C90000-0x0000000005CF6000-memory.dmp

Filesize
408KB

Download
memory/4828-136-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads