agenttesla | 43a00a8169169591980ee712afcb08fed0e8f91c838facf86402b1d375dc9028

General

Target

xMqfnsbTjvL3BfW.exe
Size

911KB
MD5

d6c2b0676223fb53b5c7a37e56f67705
SHA1

fd8a4ca0e5d97e6e3860948ad1447cffaa62801d
SHA256

c5435d2c6389eccc5d37b9e4f16764fa41d716f3b5277f1303f0f1a78133e177
SHA512

66640c8f8b4d4335fd69ed1d4a917256b3212f8abda3223f6f0853af8d41294fac95297c14141c6299540d24b483d182fbe1a88c313a78b51910ee618f968be8
SSDEEP

12288:Wdh3Upwmtw74E18R8tAYEU7CjcGI8i9gYH:uh3UpqF18aO8GI80H

Score

10^/10

agenttesla collection credential_access discovery keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.crealuz.es
Port:
587
Username:
[email protected]
Password:
Pu10?as1
Email To:
[email protected]

Signatures

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

AgentTesla payload 1 IoCs

resource	yara_rule
behavioral2/memory/4556-12-0x0000000000400000-0x000000000043C000-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-1-5-21-656926755-4116854191-210765258-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	xMqfnsbTjvL3BfW.exe
Key opened	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	xMqfnsbTjvL3BfW.exe
Key opened	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	xMqfnsbTjvL3BfW.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1512 set thread context of 4556	1512	xMqfnsbTjvL3BfW.exe	89

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	xMqfnsbTjvL3BfW.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xMqfnsbTjvL3BfW.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4556	xMqfnsbTjvL3BfW.exe
4556	xMqfnsbTjvL3BfW.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4556	xMqfnsbTjvL3BfW.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1512 wrote to memory of 4556	1512	xMqfnsbTjvL3BfW.exe	89
PID 1512 wrote to memory of 4556	1512	xMqfnsbTjvL3BfW.exe	89
PID 1512 wrote to memory of 4556	1512	xMqfnsbTjvL3BfW.exe	89
PID 1512 wrote to memory of 4556	1512	xMqfnsbTjvL3BfW.exe	89
PID 1512 wrote to memory of 4556	1512	xMqfnsbTjvL3BfW.exe	89
PID 1512 wrote to memory of 4556	1512	xMqfnsbTjvL3BfW.exe	89
PID 1512 wrote to memory of 4556	1512	xMqfnsbTjvL3BfW.exe	89
PID 1512 wrote to memory of 4556	1512	xMqfnsbTjvL3BfW.exe	89

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	xMqfnsbTjvL3BfW.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	xMqfnsbTjvL3BfW.exe

C:\Users\Admin\AppData\Local\Temp\xMqfnsbTjvL3BfW.exe
"C:\Users\Admin\AppData\Local\Temp\xMqfnsbTjvL3BfW.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1512
- C:\Users\Admin\AppData\Local\Temp\xMqfnsbTjvL3BfW.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:4556

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\xMqfnsbTjvL3BfW.exe.log

Filesize
1KB

MD5
84e77a587d94307c0ac1357eb4d3d46f

SHA1
83cc900f9401f43d181207d64c5adba7a85edc1e

SHA256
e16024b092a026a9dc00df69d4b9bbcab7b2dc178dc5291fc308a1abc9304a99

SHA512
aefb5c62200b3ed97718d20a89990954d4d8acdc0a6a73c5a420f1bba619cb79e70c2cd0a579b9f52dc6b09e1de2cea6cd6cac4376cfee92d94e2c01d310f691

Download Submit
memory/1512-6-0x0000000005A20000-0x0000000005A2A000-memory.dmp

Filesize
40KB

Download
memory/1512-2-0x0000000005D00000-0x00000000062A4000-memory.dmp

Filesize
5.6MB

Download
memory/1512-3-0x00000000057F0000-0x0000000005882000-memory.dmp

Filesize
584KB

Download
memory/1512-4-0x0000000005890000-0x000000000592C000-memory.dmp

Filesize
624KB

Download
memory/1512-5-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/1512-16-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/1512-7-0x0000000003050000-0x0000000003064000-memory.dmp

Filesize
80KB

Download
memory/1512-8-0x000000007450E000-0x000000007450F000-memory.dmp

Filesize
4KB

Download
memory/1512-9-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/1512-10-0x00000000087C0000-0x0000000008844000-memory.dmp

Filesize
528KB

Download
memory/1512-11-0x0000000008860000-0x000000000889C000-memory.dmp

Filesize
240KB

Download
memory/1512-0-0x000000007450E000-0x000000007450F000-memory.dmp

Filesize
4KB

Download
memory/1512-1-0x0000000000D00000-0x0000000000DEA000-memory.dmp

Filesize
936KB

Download
memory/4556-12-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/4556-15-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/4556-17-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/4556-18-0x0000000005A20000-0x0000000005A38000-memory.dmp

Filesize
96KB

Download
memory/4556-19-0x00000000066B0000-0x0000000006716000-memory.dmp

Filesize
408KB

Download
memory/4556-20-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/4556-21-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/4556-22-0x0000000006820000-0x0000000006870000-memory.dmp

Filesize
320KB

Download
memory/4556-23-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/4556-24-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download

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