agenttesla | 4040480a88c5deea6892453bf0b1cd86d29b879f00f04bce1b8739e0f08290cc

General

Target

FACTURAS.js
Size

944B
MD5

25d05d7da40ef51ff088cfbd3746a74f
SHA1

3c08a86611c54e2bcb77f45f12442d271b5d806c
SHA256

4040480a88c5deea6892453bf0b1cd86d29b879f00f04bce1b8739e0f08290cc
SHA512

903489a9cb106d4bef03ad0073015a6007743331616facd49e36ce4661076c1e013191abd613308c6801890987b317af2483d974d8b694a21f0cee2cbcf5469e

Score

10^/10

agenttesla keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot6846062945:AAGabPi9vxKPIKfVbRT2fLEd-Rnu3DtD_6I/

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
Blocklisted process makes network request 4 IoCs

Processes:

wscript.exe

flow pid process

4 4900 wscript.exe
7 4900 wscript.exe
14 4900 wscript.exe
16 4900 wscript.exe
Downloads MZ/PE file
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:

wscript.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-433534792-1200107535-3148087551-1000\Control Panel\International\Geo\Nation wscript.exe
Executes dropped EXE 1 IoCs

Processes:

FACTURAS.exe

pid process

4456 FACTURAS.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
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 2 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
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

53 api.ipify.org
54 api.ipify.org
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

FACTURAS.exe

pid process

4456 FACTURAS.exe
4456 FACTURAS.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

FACTURAS.exe

description pid process

Token: SeDebugPrivilege 4456 FACTURAS.exe

flow	pid	process
4	4900	wscript.exe
7	4900	wscript.exe
14	4900	wscript.exe
16	4900	wscript.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-433534792-1200107535-3148087551-1000\Control Panel\International\Geo\Nation	wscript.exe

pid	process
4456	FACTURAS.exe

flow	ioc
53	api.ipify.org
54	api.ipify.org

pid	process
4456	FACTURAS.exe
4456	FACTURAS.exe

description	pid	process
Token: SeDebugPrivilege	4456	FACTURAS.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 4900 wrote to memory of 4456	4900	wscript.exe	FACTURAS.exe
PID 4900 wrote to memory of 4456	4900	wscript.exe	FACTURAS.exe
PID 4900 wrote to memory of 4456	4900	wscript.exe	FACTURAS.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\FACTURAS.js
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4900

C:\Users\Admin\AppData\Roaming\FACTURAS.exe
"C:\Users\Admin\AppData\Roaming\FACTURAS.exe"
2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4456

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

3

T1552

Credentials In Files

3

T1552.001

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\FACTURAS.exe

Filesize
244KB

MD5
82b1416c0fcf97ac7aae6c308dde69c8

SHA1
df4775ea8402c5dd06a024c81be735a567ce5d2d

SHA256
727ba9875751b31232339f91003c267e9e80631e908e84b05d05960c85d18184

SHA512
bea12f70ef9309af2e2093b816ef1daf5096c03ec5492d962ba80fcd8f775451206b8cc3e869144c7a104801ab65e3b8d156829fa7e2580763aa564e38f67a9b

Download Submit
C:\Users\Admin\AppData\Roaming\FACTURAS.exe

Filesize
244KB

MD5
82b1416c0fcf97ac7aae6c308dde69c8

SHA1
df4775ea8402c5dd06a024c81be735a567ce5d2d

SHA256
727ba9875751b31232339f91003c267e9e80631e908e84b05d05960c85d18184

SHA512
bea12f70ef9309af2e2093b816ef1daf5096c03ec5492d962ba80fcd8f775451206b8cc3e869144c7a104801ab65e3b8d156829fa7e2580763aa564e38f67a9b

Download Submit
C:\Users\Admin\AppData\Roaming\FACTURAS.exe

Filesize
244KB

MD5
82b1416c0fcf97ac7aae6c308dde69c8

SHA1
df4775ea8402c5dd06a024c81be735a567ce5d2d

SHA256
727ba9875751b31232339f91003c267e9e80631e908e84b05d05960c85d18184

SHA512
bea12f70ef9309af2e2093b816ef1daf5096c03ec5492d962ba80fcd8f775451206b8cc3e869144c7a104801ab65e3b8d156829fa7e2580763aa564e38f67a9b

Download Submit
memory/4456-21-0x0000000074470000-0x0000000074C20000-memory.dmp

Filesize
7.7MB

Download
memory/4456-20-0x0000000000760000-0x00000000007A4000-memory.dmp

Filesize
272KB

Download
memory/4456-22-0x00000000056B0000-0x0000000005C54000-memory.dmp

Filesize
5.6MB

Download
memory/4456-23-0x0000000005240000-0x0000000005250000-memory.dmp

Filesize
64KB

Download
memory/4456-24-0x00000000052C0000-0x0000000005326000-memory.dmp

Filesize
408KB

Download
memory/4456-25-0x0000000006820000-0x0000000006870000-memory.dmp

Filesize
320KB

Download
memory/4456-26-0x0000000006910000-0x00000000069AC000-memory.dmp

Filesize
624KB

Download
memory/4456-27-0x0000000006B50000-0x0000000006BE2000-memory.dmp

Filesize
584KB

Download
memory/4456-28-0x0000000006B20000-0x0000000006B2A000-memory.dmp

Filesize
40KB

Download
memory/4456-29-0x0000000074470000-0x0000000074C20000-memory.dmp

Filesize
7.7MB

Download
memory/4456-30-0x0000000005240000-0x0000000005250000-memory.dmp

Filesize
64KB

Download

Analysis

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