agenttesla | 3568c1b547846da5255d49b08aa3bc6952501b29258ec492d405761902ffbf48

General

Target

FNIRONORE.exe
Size

920KB
MD5

72ef2316f57e3057928c70ffeb31b74f
SHA1

bba9659042c8592f584c021bf4d472f2846f2a37
SHA256

3568c1b547846da5255d49b08aa3bc6952501b29258ec492d405761902ffbf48
SHA512

a460df1c6b3878ee11baba90e18994d6d803ae16373ba68fc707fc9c9ef76ca32785b56f5fe3b27e47ad978d089a76f70e5da5808b96980851b8edf1ba151301
SSDEEP

24576:EYuXNGgXGoS1/oWMNZiHoxamHcsu14x32bRQ:P45WoSRmZiIxa8cFS32bR

Score

10^/10

agenttesla collection credential_access discovery keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.hyshippingcn.com
Port:
587
Username:
[email protected]
Password:
e*u@qkS4

Signatures

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

AgentTesla payload 1 IoCs

resource	yara_rule
behavioral1/memory/4768-11-0x0000000000400000-0x000000000043C000-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 3 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

Credentials from Web Browsers
T1555.003
Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

Credentials In Files
T1552.001

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3630502724-2561614198-3854231964-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	FNIRONORE.exe
Key opened	\REGISTRY\USER\S-1-5-21-3630502724-2561614198-3854231964-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	FNIRONORE.exe
Key opened	\REGISTRY\USER\S-1-5-21-3630502724-2561614198-3854231964-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	FNIRONORE.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
67	api.ipify.org
68	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 6084 set thread context of 4768	6084	FNIRONORE.exe	99

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	FNIRONORE.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	FNIRONORE.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
6084	FNIRONORE.exe
6084	FNIRONORE.exe
6084	FNIRONORE.exe
6084	FNIRONORE.exe
4768	FNIRONORE.exe
4768	FNIRONORE.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	6084	FNIRONORE.exe
Token: SeDebugPrivilege	4768	FNIRONORE.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 6084 wrote to memory of 4804	6084	FNIRONORE.exe	97
PID 6084 wrote to memory of 4804	6084	FNIRONORE.exe	97
PID 6084 wrote to memory of 4804	6084	FNIRONORE.exe	97
PID 6084 wrote to memory of 6024	6084	FNIRONORE.exe	98
PID 6084 wrote to memory of 6024	6084	FNIRONORE.exe	98
PID 6084 wrote to memory of 6024	6084	FNIRONORE.exe	98
PID 6084 wrote to memory of 4768	6084	FNIRONORE.exe	99
PID 6084 wrote to memory of 4768	6084	FNIRONORE.exe	99
PID 6084 wrote to memory of 4768	6084	FNIRONORE.exe	99
PID 6084 wrote to memory of 4768	6084	FNIRONORE.exe	99
PID 6084 wrote to memory of 4768	6084	FNIRONORE.exe	99
PID 6084 wrote to memory of 4768	6084	FNIRONORE.exe	99
PID 6084 wrote to memory of 4768	6084	FNIRONORE.exe	99
PID 6084 wrote to memory of 4768	6084	FNIRONORE.exe	99

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3630502724-2561614198-3854231964-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	FNIRONORE.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3630502724-2561614198-3854231964-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	FNIRONORE.exe

C:\Users\Admin\AppData\Local\Temp\FNIRONORE.exe
"C:\Users\Admin\AppData\Local\Temp\FNIRONORE.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:6084
- C:\Users\Admin\AppData\Local\Temp\FNIRONORE.exe
  "{path}"
  2⤵
  PID:4804
- C:\Users\Admin\AppData\Local\Temp\FNIRONORE.exe
  "{path}"
  2⤵
  PID:6024
- C:\Users\Admin\AppData\Local\Temp\FNIRONORE.exe
  "{path}"
  2⤵
  - Accesses Microsoft Outlook profiles
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:4768

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

5

T1552

Credentials In Files

4

T1552.001

Credentials in Registry

1

T1552.002

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/4768-11-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/4768-23-0x0000000074D70000-0x0000000075520000-memory.dmp

Filesize
7.7MB

Download
memory/4768-22-0x0000000074D70000-0x0000000075520000-memory.dmp

Filesize
7.7MB

Download
memory/4768-21-0x00000000071D0000-0x00000000071DA000-memory.dmp

Filesize
40KB

Download
memory/4768-20-0x00000000070F0000-0x0000000007140000-memory.dmp

Filesize
320KB

Download
memory/4768-19-0x0000000074D70000-0x0000000075520000-memory.dmp

Filesize
7.7MB

Download
memory/4768-18-0x0000000074D70000-0x0000000075520000-memory.dmp

Filesize
7.7MB

Download
memory/4768-17-0x0000000006590000-0x00000000065F6000-memory.dmp

Filesize
408KB

Download
memory/4768-16-0x00000000064E0000-0x00000000064F8000-memory.dmp

Filesize
96KB

Download
memory/4768-15-0x0000000074D70000-0x0000000075520000-memory.dmp

Filesize
7.7MB

Download
memory/4768-13-0x0000000074D70000-0x0000000075520000-memory.dmp

Filesize
7.7MB

Download
memory/6084-5-0x00000000057F0000-0x00000000057FA000-memory.dmp

Filesize
40KB

Download
memory/6084-10-0x0000000003100000-0x0000000003174000-memory.dmp

Filesize
464KB

Download
memory/6084-14-0x0000000074D70000-0x0000000075520000-memory.dmp

Filesize
7.7MB

Download
memory/6084-9-0x0000000006990000-0x0000000006A48000-memory.dmp

Filesize
736KB

Download
memory/6084-8-0x0000000074D70000-0x0000000075520000-memory.dmp

Filesize
7.7MB

Download
memory/6084-7-0x0000000074D7E000-0x0000000074D7F000-memory.dmp

Filesize
4KB

Download
memory/6084-6-0x0000000005A70000-0x0000000005B0C000-memory.dmp

Filesize
624KB

Download
memory/6084-0-0x0000000074D7E000-0x0000000074D7F000-memory.dmp

Filesize
4KB

Download
memory/6084-4-0x00000000062F0000-0x0000000006476000-memory.dmp

Filesize
1.5MB

Download
memory/6084-3-0x0000000005840000-0x00000000058D2000-memory.dmp

Filesize
584KB

Download
memory/6084-2-0x0000000005D40000-0x00000000062E4000-memory.dmp

Filesize
5.6MB

Download
memory/6084-1-0x0000000000E90000-0x0000000000F7C000-memory.dmp

Filesize
944KB

Download

Analysis

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