agenttesla | b6616b1c6c07ec1896a546d43a0e032c7c64407c19ae902ff7c7f0231bff6f46

General

Target

invoice copy.pdf.exe
Size

681KB
MD5

8a627edde43c47a592b9f4c9f29f489a
SHA1

74f0491f86065a952ad14d19ceb3b59528289af6
SHA256

7200b362dfb336483d716fbbd84930894e5c8c28acd6a2ceff2b5da5cd3894fc
SHA512

a860d208aaf8ea9f15c41170aba13a9e8a08d972c7bad0251bd53a5cb0cbbb162578b11806a92a9a6f1dea6a44061c3ed1e6166aa0f1d50c87c3e177c3189921
SSDEEP

12288:LjBQofmNv8Y2hdFXsnlnOde3+JGDXwLZT0ldgyZbCmlAjt:xQZb8VCr3+EgedF3A5

Score

10^/10

agenttesla collection keylogger spyware stealer trojan upx

Malware Config

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla

AgentTesla payload 6 IoCs

resource	yara_rule
behavioral2/memory/3488-7-0x0000000000400000-0x0000000000484000-memory.dmp	family_agenttesla
behavioral2/memory/3488-11-0x0000000000730000-0x000000000076C000-memory.dmp	family_agenttesla
behavioral2/memory/3488-12-0x0000000000400000-0x0000000000484000-memory.dmp	family_agenttesla
behavioral2/memory/3488-10-0x0000000000730000-0x000000000076C000-memory.dmp	family_agenttesla
behavioral2/memory/3488-9-0x0000000000400000-0x0000000000484000-memory.dmp	family_agenttesla
behavioral2/memory/3488-23-0x0000000000400000-0x0000000000484000-memory.dmp	family_agenttesla

Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
spyware stealer

Data from Local System
T1005

Credentials in Registry
T1552.002
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

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/3488-7-0x0000000000400000-0x0000000000484000-memory.dmp	upx
behavioral2/memory/3488-12-0x0000000000400000-0x0000000000484000-memory.dmp	upx
behavioral2/memory/3488-6-0x0000000000400000-0x0000000000484000-memory.dmp	upx
behavioral2/memory/3488-4-0x0000000000400000-0x0000000000484000-memory.dmp	upx
behavioral2/memory/3488-9-0x0000000000400000-0x0000000000484000-memory.dmp	upx

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	invoice copy.pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	invoice copy.pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	invoice copy.pdf.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
46	api.ipify.org
47	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3752 set thread context of 3488	3752	invoice copy.pdf.exe	90

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3752	invoice copy.pdf.exe
3752	invoice copy.pdf.exe
3488	invoice copy.pdf.exe
3488	invoice copy.pdf.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3752	invoice copy.pdf.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3488	invoice copy.pdf.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3752 wrote to memory of 3488	3752	invoice copy.pdf.exe	90
PID 3752 wrote to memory of 3488	3752	invoice copy.pdf.exe	90
PID 3752 wrote to memory of 3488	3752	invoice copy.pdf.exe	90

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	invoice copy.pdf.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	invoice copy.pdf.exe

C:\Users\Admin\AppData\Local\Temp\invoice copy.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\invoice copy.pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3752
- C:\Users\Admin\AppData\Local\Temp\invoice copy.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\invoice copy.pdf.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:3488

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4168,i,1697479186275492802,18058102846092193784,262144 --variations-seed-version --mojo-platform-channel-handle=4292 /prefetch:8
1⤵
PID:688

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

4

T1552

Credentials In Files

3

T1552.001

Credentials in Registry

1

T1552.002

Discovery

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3488-10-0x0000000000730000-0x000000000076C000-memory.dmp

Filesize
240KB

Download
memory/3488-7-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/3488-11-0x0000000000730000-0x000000000076C000-memory.dmp

Filesize
240KB

Download
memory/3488-12-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/3488-6-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/3488-4-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/3488-9-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/3488-23-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/3752-2-0x00000000023A0000-0x00000000023B2000-memory.dmp

Filesize
72KB

Download
memory/3752-3-0x00000000023C0000-0x00000000023C1000-memory.dmp

Filesize
4KB

Download
memory/3752-0-0x0000000002310000-0x0000000002311000-memory.dmp

Filesize
4KB

Download
memory/3752-8-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/3752-1-0x00000000023A0000-0x00000000023B2000-memory.dmp

Filesize
72KB

Download

Analysis

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