agenttesla | 8e2f378359ca3885f551fa0a08d0d9b9b43c2e16e3cd3b68acb9c57a63f1ce15

General

Target

PO_61654.exe
Size

494KB
MD5

0faf92001013a74d38b7d43cd4e8292e
SHA1

9870f1b6aa195deff54b059f2e28f77d526c2fb1
SHA256

5f8d0e5d206e5b37c552b79782a6777edf6e7a9a1c1db8ce324055baba187f4b
SHA512

19a8a5646eb15596bf2e4a55bf63e1badb2dd325b46a77f749a05a52197554e8aa079ff9e45bf4d3b6ca1b5f01c5a53755c398468abf960de6e504fcdafc1738

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.kenapens.com
Port:
587
Username:
[email protected]
Password:
@Hammer1980

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/4776-138-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla

Drops file in Drivers directory 1 IoCs

Processes:

PO_61654.exe

description ioc process

File opened for modification C:\Windows\system32\drivers\etc\hosts PO_61654.exe

description	ioc	process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	PO_61654.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_61654.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation	PO_61654.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_61654.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO_61654.exe
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO_61654.exe
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO_61654.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

PO_61654.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\myapp = "C:\\Users\\Admin\\AppData\\Roaming\\myapp\\myapp.exe"	PO_61654.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

PO_61654.exe

description pid process target process

PID 4288 set thread context of 4776 4288 PO_61654.exe PO_61654.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

4956 schtasks.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

PO_61654.exePO_61654.exe

pid process

4288 PO_61654.exe
4288 PO_61654.exe
4288 PO_61654.exe
4776 PO_61654.exe
4776 PO_61654.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

PO_61654.exePO_61654.exe

description pid process

Token: SeDebugPrivilege 4288 PO_61654.exe
Token: SeDebugPrivilege 4776 PO_61654.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

PO_61654.exe

pid process

4776 PO_61654.exe

description	pid	process	target process
PID 4288 set thread context of 4776	4288	PO_61654.exe	PO_61654.exe

pid	process
4956	schtasks.exe

pid	process
4288	PO_61654.exe
4288	PO_61654.exe
4288	PO_61654.exe
4776	PO_61654.exe
4776	PO_61654.exe

description	pid	process
Token: SeDebugPrivilege	4288	PO_61654.exe
Token: SeDebugPrivilege	4776	PO_61654.exe

pid	process
4776	PO_61654.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

PO_61654.exe

description	pid	process	target process
PID 4288 wrote to memory of 4956	4288	PO_61654.exe	schtasks.exe
PID 4288 wrote to memory of 4956	4288	PO_61654.exe	schtasks.exe
PID 4288 wrote to memory of 4956	4288	PO_61654.exe	schtasks.exe
PID 4288 wrote to memory of 3368	4288	PO_61654.exe	PO_61654.exe
PID 4288 wrote to memory of 3368	4288	PO_61654.exe	PO_61654.exe
PID 4288 wrote to memory of 3368	4288	PO_61654.exe	PO_61654.exe
PID 4288 wrote to memory of 4776	4288	PO_61654.exe	PO_61654.exe
PID 4288 wrote to memory of 4776	4288	PO_61654.exe	PO_61654.exe
PID 4288 wrote to memory of 4776	4288	PO_61654.exe	PO_61654.exe
PID 4288 wrote to memory of 4776	4288	PO_61654.exe	PO_61654.exe
PID 4288 wrote to memory of 4776	4288	PO_61654.exe	PO_61654.exe
PID 4288 wrote to memory of 4776	4288	PO_61654.exe	PO_61654.exe
PID 4288 wrote to memory of 4776	4288	PO_61654.exe	PO_61654.exe
PID 4288 wrote to memory of 4776	4288	PO_61654.exe	PO_61654.exe

outlook_office_path 1 IoCs

Processes:

PO_61654.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO_61654.exe

outlook_win_path 1 IoCs

Processes:

PO_61654.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO_61654.exe

C:\Users\Admin\AppData\Local\Temp\PO_61654.exe
"C:\Users\Admin\AppData\Local\Temp\PO_61654.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4288

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\apxxmbC" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7BE7.tmp"
2⤵
- Creates scheduled task(s)
PID:4956

C:\Users\Admin\AppData\Local\Temp\PO_61654.exe
"{path}"
2⤵
PID:3368

C:\Users\Admin\AppData\Local\Temp\PO_61654.exe
"{path}"
2⤵
- Drops file in Drivers directory
- 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:4776

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\PO_61654.exe.log
Filesize
507B

MD5
76ffb2f33cb32ade8fc862a67599e9d8

SHA1
920cc4ab75b36d2f9f6e979b74db568973c49130

SHA256
f1a3724670e3379318ec9c73f6f39058cab0ab013ba3cd90c047c3d701362310

SHA512
f33502c2e1bb30c05359bfc6819ca934642a1e01874e3060349127d792694d56ad22fccd6c9477b8ee50d66db35785779324273f509576b48b7f85577e001b4e

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp7BE7.tmp
Filesize
1KB

MD5
b1cfaaf8c323bd7f4131a73b87571582

SHA1
fa534845b764761c4f80c20807bd7832e896a6b4

SHA256
9387c3176b63fda39a3f6bb0d00c1b950c3bf8783fe7c16ea9b83cab520ba6d9

SHA512
d8e2f3fe20ea338c2a2bbe3d27545686d544c04d7114352374e6718fdead66c9695320b729e257e80665a82971002b3b675b738fd952fed5c978b2e2aa6d74e1

Download Submit
memory/3368-136-0x0000000000000000-mapping.dmp

Download
memory/4288-133-0x0000000005570000-0x000000000560C000-memory.dmp

Filesize
624KB

Download
memory/4288-132-0x00000000054D0000-0x0000000005562000-memory.dmp

Filesize
584KB

Download
memory/4288-130-0x0000000000BC0000-0x0000000000C42000-memory.dmp

Filesize
520KB

Download
memory/4288-131-0x00000000059E0000-0x0000000005F84000-memory.dmp

Filesize
5.6MB

Download
memory/4776-137-0x0000000000000000-mapping.dmp

Download
memory/4776-138-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4776-140-0x00000000067A0000-0x0000000006806000-memory.dmp

Filesize
408KB

Download
memory/4776-141-0x0000000006FB0000-0x0000000007000000-memory.dmp

Filesize
320KB

Download
memory/4776-142-0x0000000007120000-0x000000000712A000-memory.dmp

Filesize
40KB

Download
memory/4956-134-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads