agenttesla | a7d596f3e0ad4965d39552998f6eccffb7aa7533a1ff3c2614936864509c9a62

General

Target

NEW RFQ.exe
Size

760KB
MD5

dac1de5239180e2069ab67c8a8e7c44b
SHA1

0d1400e85febc34131236e94aff353ff681be293
SHA256

49700ee70d04597630dacefa2203c0f12f412ece9a93ffdb09ab18e5cce00524
SHA512

5d23cc399dfb610b596f8c10065ff45f2d6e4d382325539abbd3566f4211ef305f231a68c762c484681a785d0d1e0384775e990b8e8e1f44ba240724eaa7b392

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.flsrnidth.com
Port:
587
Username:
[email protected]
Password:
x{Op,7(4O+yl

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/4400-136-0x0000000000400000-0x000000000044C000-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:

NEW RFQ.exe

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

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

NEW RFQ.exe

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

Suspicious use of SetThreadContext 1 IoCs

Processes:

NEW RFQ.exe

description pid process target process

PID 4588 set thread context of 4400 4588 NEW RFQ.exe NEW RFQ.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

3064 schtasks.exe
Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

NEW RFQ.exeNEW RFQ.exe

pid process

4588 NEW RFQ.exe
4588 NEW RFQ.exe
4588 NEW RFQ.exe
4588 NEW RFQ.exe
4588 NEW RFQ.exe
4588 NEW RFQ.exe
4400 NEW RFQ.exe
4400 NEW RFQ.exe
Suspicious behavior: RenamesItself 1 IoCs

Processes:

NEW RFQ.exe

pid process

4400 NEW RFQ.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

NEW RFQ.exeNEW RFQ.exe

description pid process

Token: SeDebugPrivilege 4588 NEW RFQ.exe
Token: SeDebugPrivilege 4400 NEW RFQ.exe

description	pid	process	target process
PID 4588 set thread context of 4400	4588	NEW RFQ.exe	NEW RFQ.exe

pid	process
3064	schtasks.exe

pid	process
4588	NEW RFQ.exe
4588	NEW RFQ.exe
4588	NEW RFQ.exe
4588	NEW RFQ.exe
4588	NEW RFQ.exe
4588	NEW RFQ.exe
4400	NEW RFQ.exe
4400	NEW RFQ.exe

pid	process
4400	NEW RFQ.exe

description	pid	process
Token: SeDebugPrivilege	4588	NEW RFQ.exe
Token: SeDebugPrivilege	4400	NEW RFQ.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

NEW RFQ.exe

description	pid	process	target process
PID 4588 wrote to memory of 3064	4588	NEW RFQ.exe	schtasks.exe
PID 4588 wrote to memory of 3064	4588	NEW RFQ.exe	schtasks.exe
PID 4588 wrote to memory of 3064	4588	NEW RFQ.exe	schtasks.exe
PID 4588 wrote to memory of 4400	4588	NEW RFQ.exe	NEW RFQ.exe
PID 4588 wrote to memory of 4400	4588	NEW RFQ.exe	NEW RFQ.exe
PID 4588 wrote to memory of 4400	4588	NEW RFQ.exe	NEW RFQ.exe
PID 4588 wrote to memory of 4400	4588	NEW RFQ.exe	NEW RFQ.exe
PID 4588 wrote to memory of 4400	4588	NEW RFQ.exe	NEW RFQ.exe
PID 4588 wrote to memory of 4400	4588	NEW RFQ.exe	NEW RFQ.exe
PID 4588 wrote to memory of 4400	4588	NEW RFQ.exe	NEW RFQ.exe
PID 4588 wrote to memory of 4400	4588	NEW RFQ.exe	NEW RFQ.exe

outlook_office_path 1 IoCs

Processes:

NEW RFQ.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	NEW RFQ.exe

outlook_win_path 1 IoCs

Processes:

NEW RFQ.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	NEW RFQ.exe

C:\Users\Admin\AppData\Local\Temp\NEW RFQ.exe
"C:\Users\Admin\AppData\Local\Temp\NEW RFQ.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4588

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\&startupname&" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6CF2.tmp"
2⤵
- Creates scheduled task(s)
PID:3064

C:\Users\Admin\AppData\Local\Temp\NEW RFQ.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:4400

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

Scheduled Task

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

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\NEW RFQ.exe.log

Filesize
611B

MD5
bceb1b24038a079a8046db250ce33039

SHA1
95d2a21b00e5c127f023d2950afe052d2acba572

SHA256
d5237a1aac346aaff3cedaca0a567afa529b84a21676e4c7017c9f87cfb32d57

SHA512
182dc30cd1e600da9b7ea1ca12860fd82237b04de293899d19ab7edb8b2bcdb37e30d387bbdbb54acdbecdb8200f5a39d417abd91d2b4c11fd126a9e4d0f050e

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp6CF2.tmp

Filesize
1KB

MD5
ab9f8a9574d9209cd8666decb37e33cc

SHA1
b768b98d37b96bcf5eeeb4bae10589a196b66db2

SHA256
2c052172f943620c36053efd2ab1d6ef9fbb671c55669b9f49430f0f7acd7704

SHA512
5059538580cce17a2c7516e3117297310455e38ff32d51c6e17ef188448ce3567f9c968ad478df725ed2ce8630ceee2340246264a6e60877895591a67d45da70

Download Submit
memory/3064-133-0x0000000000000000-mapping.dmp

Download
memory/4400-135-0x0000000000000000-mapping.dmp

Download
memory/4400-136-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4400-138-0x0000000005B60000-0x0000000006104000-memory.dmp

Filesize
5.6MB

Download
memory/4400-139-0x0000000005AE0000-0x0000000005B46000-memory.dmp

Filesize
408KB

Download
memory/4400-140-0x00000000069D0000-0x0000000006A20000-memory.dmp

Filesize
320KB

Download
memory/4400-141-0x0000000006B90000-0x0000000006B9A000-memory.dmp

Filesize
40KB

Download
memory/4588-130-0x0000000000560000-0x0000000000624000-memory.dmp

Filesize
784KB

Download
memory/4588-131-0x00000000077F0000-0x000000000788C000-memory.dmp

Filesize
624KB

Download
memory/4588-132-0x0000000007930000-0x00000000079C2000-memory.dmp

Filesize
584KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads