agenttesla | a99e3080a9a211bda3f0c95b712c44c496c14d0c12fff6fa83f41d564f1d84ec

General

Target

a99e3080a9a211bda3f0c95b712c44c496c14d0c12fff6fa83f41d564f1d84ec.exe
Size

1.6MB
MD5

d4288cef77b05d3f8980918ed5a47dc8
SHA1

af8b94bfacf197b0a319878228d04e7894c65d0b
SHA256

a99e3080a9a211bda3f0c95b712c44c496c14d0c12fff6fa83f41d564f1d84ec
SHA512

88cde2dae3ebc4fd448b61d1e4c66fd6f74bc2df66e1880b63f9ea2cd8f05d171d4467779a0119215cb97b276f9fb501df22534619a639d729356d503b5c8e11
SSDEEP

49152:KWvx3m/H8Dfyp9oOTGGcjLoyEkmZ9Y14:yc7IoOrA

Score

10^/10

agenttesla collection credential_access discovery keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
zytrox.cf
Port:
587
Username:
[email protected]
Password:
7213575aceACE@#$
Email To:
[email protected]

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
behavioral2/memory/3740-12-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	a99e3080a9a211bda3f0c95b712c44c496c14d0c12fff6fa83f41d564f1d84ec.exe

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-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	a99e3080a9a211bda3f0c95b712c44c496c14d0c12fff6fa83f41d564f1d84ec.exe
Key opened	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	a99e3080a9a211bda3f0c95b712c44c496c14d0c12fff6fa83f41d564f1d84ec.exe
Key opened	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	a99e3080a9a211bda3f0c95b712c44c496c14d0c12fff6fa83f41d564f1d84ec.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4604 set thread context of 3740	4604	a99e3080a9a211bda3f0c95b712c44c496c14d0c12fff6fa83f41d564f1d84ec.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	a99e3080a9a211bda3f0c95b712c44c496c14d0c12fff6fa83f41d564f1d84ec.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a99e3080a9a211bda3f0c95b712c44c496c14d0c12fff6fa83f41d564f1d84ec.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3740	a99e3080a9a211bda3f0c95b712c44c496c14d0c12fff6fa83f41d564f1d84ec.exe
3740	a99e3080a9a211bda3f0c95b712c44c496c14d0c12fff6fa83f41d564f1d84ec.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3740	a99e3080a9a211bda3f0c95b712c44c496c14d0c12fff6fa83f41d564f1d84ec.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3740	a99e3080a9a211bda3f0c95b712c44c496c14d0c12fff6fa83f41d564f1d84ec.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4604 wrote to memory of 3740	4604	a99e3080a9a211bda3f0c95b712c44c496c14d0c12fff6fa83f41d564f1d84ec.exe	99
PID 4604 wrote to memory of 3740	4604	a99e3080a9a211bda3f0c95b712c44c496c14d0c12fff6fa83f41d564f1d84ec.exe	99
PID 4604 wrote to memory of 3740	4604	a99e3080a9a211bda3f0c95b712c44c496c14d0c12fff6fa83f41d564f1d84ec.exe	99
PID 4604 wrote to memory of 3740	4604	a99e3080a9a211bda3f0c95b712c44c496c14d0c12fff6fa83f41d564f1d84ec.exe	99
PID 4604 wrote to memory of 3740	4604	a99e3080a9a211bda3f0c95b712c44c496c14d0c12fff6fa83f41d564f1d84ec.exe	99
PID 4604 wrote to memory of 3740	4604	a99e3080a9a211bda3f0c95b712c44c496c14d0c12fff6fa83f41d564f1d84ec.exe	99
PID 4604 wrote to memory of 3740	4604	a99e3080a9a211bda3f0c95b712c44c496c14d0c12fff6fa83f41d564f1d84ec.exe	99
PID 4604 wrote to memory of 3740	4604	a99e3080a9a211bda3f0c95b712c44c496c14d0c12fff6fa83f41d564f1d84ec.exe	99

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	a99e3080a9a211bda3f0c95b712c44c496c14d0c12fff6fa83f41d564f1d84ec.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	a99e3080a9a211bda3f0c95b712c44c496c14d0c12fff6fa83f41d564f1d84ec.exe

C:\Users\Admin\AppData\Local\Temp\a99e3080a9a211bda3f0c95b712c44c496c14d0c12fff6fa83f41d564f1d84ec.exe
"C:\Users\Admin\AppData\Local\Temp\a99e3080a9a211bda3f0c95b712c44c496c14d0c12fff6fa83f41d564f1d84ec.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4604
- C:\Users\Admin\AppData\Local\Temp\a99e3080a9a211bda3f0c95b712c44c496c14d0c12fff6fa83f41d564f1d84ec.exe
  "C:\Users\Admin\AppData\Local\Temp\a99e3080a9a211bda3f0c95b712c44c496c14d0c12fff6fa83f41d564f1d84ec.exe"
  2⤵
  - Drops file in Drivers directory
  - Accesses Microsoft Outlook profiles
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:3740

Network

MITRE ATT&CK Enterprise v15

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

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\a99e3080a9a211bda3f0c95b712c44c496c14d0c12fff6fa83f41d564f1d84ec.exe.log

Filesize
1KB

MD5
8ec831f3e3a3f77e4a7b9cd32b48384c

SHA1
d83f09fd87c5bd86e045873c231c14836e76a05c

SHA256
7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

SHA512
26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

Download Submit
memory/3740-19-0x0000000005EC0000-0x0000000005F26000-memory.dmp

Filesize
408KB

Download
memory/3740-15-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/3740-25-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/3740-24-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/3740-23-0x00000000065B0000-0x0000000006600000-memory.dmp

Filesize
320KB

Download
memory/3740-21-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/3740-20-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/3740-18-0x0000000005070000-0x0000000005088000-memory.dmp

Filesize
96KB

Download
memory/3740-12-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/3740-17-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/4604-7-0x00000000751AE000-0x00000000751AF000-memory.dmp

Filesize
4KB

Download
memory/4604-9-0x0000000006BA0000-0x0000000006C3C000-memory.dmp

Filesize
624KB

Download
memory/4604-8-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/4604-2-0x0000000005860000-0x0000000005E04000-memory.dmp

Filesize
5.6MB

Download
memory/4604-16-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/4604-10-0x0000000006C40000-0x0000000006CFC000-memory.dmp

Filesize
752KB

Download
memory/4604-1-0x0000000000730000-0x00000000008CE000-memory.dmp

Filesize
1.6MB

Download
memory/4604-0-0x00000000751AE000-0x00000000751AF000-memory.dmp

Filesize
4KB

Download
memory/4604-11-0x0000000006D00000-0x0000000006D3C000-memory.dmp

Filesize
240KB

Download
memory/4604-6-0x0000000005850000-0x0000000005860000-memory.dmp

Filesize
64KB

Download
memory/4604-5-0x0000000005370000-0x000000000537A000-memory.dmp

Filesize
40KB

Download
memory/4604-4-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/4604-3-0x00000000052B0000-0x0000000005342000-memory.dmp

Filesize
584KB

Download

Analysis

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