agenttesla | ea930b3655ed7afd7121e9ed20477a2b1849a7bb2a3f51d5b67697dc1614202c

Analysis

max time kernel
4294212s
max time network
126s
platform
windows7_x64
resource
win7-20220223-en
submitted
04/03/2022, 06:26

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General

Target
documentos_datos bancarios.PDF.exe
Size 45KB
Sample220304-g67c8afdan
SHA256 ea930b3655ed7afd7121e9ed20477a2b1849a7bb2a3f51d5b67697dc1614202c
MD5 a25bb18dc3131e6e267f39755aee468b
SHA1 8d7e8ffdcfac76593a05196d0cad0b0245197890
SHA512 3f1e062dd11b308bb855f606e65bf2be9d749a123d0e2b022f09ffee23f11caff047917e33f62f43a8f111962393831532a53b5d82bd59e53ee5c868c397d8d7
MD5 SHA1 SHA512

Score

10^/10

agenttesla collection keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
mail.centraldefiltros.cl
Port
587
Username
[email protected]
Password
icui4cu2@@
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 5 IoCs

resource	yara_rule
behavioral1/memory/868-67-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/868-65-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/868-69-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/868-73-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/868-71-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1405931862-909307831-4085185274-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-1405931862-909307831-4085185274-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-1405931862-909307831-4085185274-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1076 set thread context of 868	1076	documentos_datos bancarios.PDF.exe	32

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1124	timeout.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1076	documentos_datos bancarios.PDF.exe
1076	documentos_datos bancarios.PDF.exe
868	MSBuild.exe
868	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1076	documentos_datos bancarios.PDF.exe
Token: SeDebugPrivilege	868	MSBuild.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1076 wrote to memory of 588	1076	documentos_datos bancarios.PDF.exe	27
PID 1076 wrote to memory of 588	1076	documentos_datos bancarios.PDF.exe	27
PID 1076 wrote to memory of 588	1076	documentos_datos bancarios.PDF.exe	27
PID 1076 wrote to memory of 588	1076	documentos_datos bancarios.PDF.exe	27
PID 588 wrote to memory of 1124	588	cmd.exe	29
PID 588 wrote to memory of 1124	588	cmd.exe	29
PID 588 wrote to memory of 1124	588	cmd.exe	29
PID 588 wrote to memory of 1124	588	cmd.exe	29
PID 1076 wrote to memory of 868	1076	documentos_datos bancarios.PDF.exe	32
PID 1076 wrote to memory of 868	1076	documentos_datos bancarios.PDF.exe	32
PID 1076 wrote to memory of 868	1076	documentos_datos bancarios.PDF.exe	32
PID 1076 wrote to memory of 868	1076	documentos_datos bancarios.PDF.exe	32
PID 1076 wrote to memory of 868	1076	documentos_datos bancarios.PDF.exe	32
PID 1076 wrote to memory of 868	1076	documentos_datos bancarios.PDF.exe	32
PID 1076 wrote to memory of 868	1076	documentos_datos bancarios.PDF.exe	32
PID 1076 wrote to memory of 868	1076	documentos_datos bancarios.PDF.exe	32
PID 1076 wrote to memory of 868	1076	documentos_datos bancarios.PDF.exe	32

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1405931862-909307831-4085185274-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1405931862-909307831-4085185274-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\documentos_datos bancarios.PDF.exe
"C:\Users\Admin\AppData\Local\Temp\documentos_datos bancarios.PDF.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1076
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout 19
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:588
- - C:\Windows\SysWOW64\timeout.exe
    timeout 19
    3⤵
    - Delays execution with timeout.exe
    PID:1124
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:868

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/868-73-0x0000000000400000-0x000000000043C000-memory.dmp

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memory/868-65-0x0000000000400000-0x000000000043C000-memory.dmp

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memory/868-74-0x0000000074D70000-0x000000007545E000-memory.dmp

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memory/868-75-0x0000000004980000-0x0000000004981000-memory.dmp

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memory/868-71-0x0000000000400000-0x000000000043C000-memory.dmp

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memory/868-69-0x0000000000400000-0x000000000043C000-memory.dmp

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memory/868-61-0x0000000000400000-0x000000000043C000-memory.dmp

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memory/868-67-0x0000000000400000-0x000000000043C000-memory.dmp

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memory/868-63-0x0000000000400000-0x000000000043C000-memory.dmp

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memory/1076-55-0x0000000075801000-0x0000000075803000-memory.dmp

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memory/1076-60-0x0000000005500000-0x000000000554C000-memory.dmp

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memory/1076-59-0x00000000042A0000-0x00000000042E2000-memory.dmp

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memory/1076-54-0x0000000000320000-0x0000000000332000-memory.dmp

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memory/1076-58-0x0000000005340000-0x000000000539C000-memory.dmp

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memory/1076-57-0x0000000004C40000-0x0000000004C41000-memory.dmp

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memory/1076-56-0x0000000074D70000-0x000000007545E000-memory.dmp

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