agenttesla | 5ce8c4d2e12543d6c237e1f98c76c6daff01b3e477c40e5abeea39afb7327da0

General

Target

TRANSFER.scr
Size

1.1MB
MD5

b3af901e962e7693a2be0ffd2c360538
SHA1

6669cd006c13bbf3927063ffe5701bad1b698c3f
SHA256

392faa37063ee6a619a3091d1d7a27b8c0d86d35a7f1594720822f8a94ce9d1b
SHA512

6976f08cb58d80cb8f819aa105fc2af0f00059d839e8fa9348a8ffd95ccac6a42ad298f500e0a5aafe7c10605080d67ffb260a678d81c0416095461d1d5f5b6f

Score

10^/10

agenttesla collection keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.northwestpowdercoating.co.uk
Port:
587
Username:
[email protected]
Password:
C^0z.^LxykTW

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/1980-136-0x0000000000400000-0x000000000044C000-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:

TRANSFER.scr

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	TRANSFER.scr

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:

TRANSFER.scr

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	TRANSFER.scr
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	TRANSFER.scr
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	TRANSFER.scr

Suspicious use of SetThreadContext 1 IoCs

Processes:

TRANSFER.scr

description pid process target process

PID 4788 set thread context of 1980 4788 TRANSFER.scr TRANSFER.scr
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

540 schtasks.exe

description	pid	process	target process
PID 4788 set thread context of 1980	4788	TRANSFER.scr	TRANSFER.scr

pid	process
540	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

TRANSFER.scrTRANSFER.scr

pid	process
4788	TRANSFER.scr
4788	TRANSFER.scr
4788	TRANSFER.scr
4788	TRANSFER.scr
4788	TRANSFER.scr
4788	TRANSFER.scr
4788	TRANSFER.scr
1980	TRANSFER.scr
1980	TRANSFER.scr

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

TRANSFER.scrTRANSFER.scr

description pid process

Token: SeDebugPrivilege 4788 TRANSFER.scr
Token: SeDebugPrivilege 1980 TRANSFER.scr

description	pid	process
Token: SeDebugPrivilege	4788	TRANSFER.scr
Token: SeDebugPrivilege	1980	TRANSFER.scr

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

TRANSFER.scr

description	pid	process	target process
PID 4788 wrote to memory of 540	4788	TRANSFER.scr	schtasks.exe
PID 4788 wrote to memory of 540	4788	TRANSFER.scr	schtasks.exe
PID 4788 wrote to memory of 540	4788	TRANSFER.scr	schtasks.exe
PID 4788 wrote to memory of 1980	4788	TRANSFER.scr	TRANSFER.scr
PID 4788 wrote to memory of 1980	4788	TRANSFER.scr	TRANSFER.scr
PID 4788 wrote to memory of 1980	4788	TRANSFER.scr	TRANSFER.scr
PID 4788 wrote to memory of 1980	4788	TRANSFER.scr	TRANSFER.scr
PID 4788 wrote to memory of 1980	4788	TRANSFER.scr	TRANSFER.scr
PID 4788 wrote to memory of 1980	4788	TRANSFER.scr	TRANSFER.scr
PID 4788 wrote to memory of 1980	4788	TRANSFER.scr	TRANSFER.scr
PID 4788 wrote to memory of 1980	4788	TRANSFER.scr	TRANSFER.scr

outlook_office_path 1 IoCs

Processes:

TRANSFER.scr

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	TRANSFER.scr

outlook_win_path 1 IoCs

Processes:

TRANSFER.scr

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	TRANSFER.scr

C:\Users\Admin\AppData\Local\Temp\TRANSFER.scr
"C:\Users\Admin\AppData\Local\Temp\TRANSFER.scr" /S
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4788

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\&startupname&" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9366.tmp"
2⤵
- Creates scheduled task(s)
PID:540

C:\Users\Admin\AppData\Local\Temp\TRANSFER.scr
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:1980

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

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\TRANSFER.scr.log

Filesize
611B

MD5
bceb1b24038a079a8046db250ce33039

SHA1
95d2a21b00e5c127f023d2950afe052d2acba572

SHA256
d5237a1aac346aaff3cedaca0a567afa529b84a21676e4c7017c9f87cfb32d57

SHA512
182dc30cd1e600da9b7ea1ca12860fd82237b04de293899d19ab7edb8b2bcdb37e30d387bbdbb54acdbecdb8200f5a39d417abd91d2b4c11fd126a9e4d0f050e

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp9366.tmp

Filesize
1KB

MD5
072541fbcc0f05e7e00afb8876087822

SHA1
0a1a6ad25a4a546520fe21bed23b4dd56f5ea7f5

SHA256
8a98b2e2084e096028123a79228bc1b11f12179aecfbe53759b3e0805f973116

SHA512
07074f512ee920a787af3d49d982795121051cc5cd1ce01d115aab63cd800fd58f2f57e73dafb96151e57ada9d2e407e370abc9c56d8ab604d118dad93c1412d

Download Submit
memory/540-133-0x0000000000000000-mapping.dmp

Download
memory/1980-135-0x0000000000000000-mapping.dmp

Download
memory/1980-136-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1980-138-0x0000000006050000-0x00000000065F4000-memory.dmp

Filesize
5.6MB

Download
memory/1980-139-0x0000000006740000-0x00000000067A6000-memory.dmp

Filesize
408KB

Download
memory/1980-140-0x0000000006DB0000-0x0000000006E00000-memory.dmp

Filesize
320KB

Download
memory/4788-130-0x0000000000810000-0x0000000000924000-memory.dmp

Filesize
1.1MB

Download
memory/4788-131-0x00000000079C0000-0x0000000007A5C000-memory.dmp

Filesize
624KB

Download
memory/4788-132-0x0000000007B00000-0x0000000007B92000-memory.dmp

Filesize
584KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads