agenttesla | 4b53a882fc87d037002401e58db022d2d9436c4e591b9f8b6817286267074295

General

Target
RFQ.exe
Size 414KB
Sample220712-mcqq9sgfb6
SHA256 6de7efc9e04cb4db0acc603a7ed700b186d0545acd0e8e84a1d8cce668202dc8
MD5 8cf823ee0766126638d33918383ca5d8
SHA1 3b215b084b9ff049a860fc29108f62c4b6d2133b
SHA512 41cd0278ebb15faddd178fb826e8dc74021980f09b94ff785b1b6d88d5504c2e7b37450484666fd7a00e3c3e865459ace696c41ad84e4d0630d1ef893e93ed94
MD5 SHA1 SHA512

Score

10^/10

agenttesla collection evasion keylogger spyware stealer suricata trojan

Malware Config

Extracted

Credentials

Protocol
smtp
Host
mail.cpworldindia.com
Port
587
Username
[email protected]
Password
imprtcs@2019

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
mail.cpworldindia.com
Port
587
Username
[email protected]
Password
imprtcs@2019

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
suricata: ET MALWARE AgentTesla Exfil Via SMTP
suricata: ET MALWARE AgentTesla Exfil Via SMTP
suricata

AgentTesla payload 1 IoCs

resource	yara_rule
behavioral2/memory/2132-138-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla

Disables Task Manager via registry modification
evasion

Drops file in Drivers directory 1 IoCs

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	RFQ.exe

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
T1081
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
T1081
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
T1081

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFQ.exe
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFQ.exe
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFQ.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 552 set thread context of 2132	552	RFQ.exe	84

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
5108	schtasks.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
5008	REG.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
552	RFQ.exe
2132	RFQ.exe
2132	RFQ.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	552	RFQ.exe
Token: SeDebugPrivilege	2132	RFQ.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 552 wrote to memory of 5108	552	RFQ.exe	82
PID 552 wrote to memory of 5108	552	RFQ.exe	82
PID 552 wrote to memory of 5108	552	RFQ.exe	82
PID 552 wrote to memory of 2132	552	RFQ.exe	84
PID 552 wrote to memory of 2132	552	RFQ.exe	84
PID 552 wrote to memory of 2132	552	RFQ.exe	84
PID 552 wrote to memory of 2132	552	RFQ.exe	84
PID 552 wrote to memory of 2132	552	RFQ.exe	84
PID 552 wrote to memory of 2132	552	RFQ.exe	84
PID 552 wrote to memory of 2132	552	RFQ.exe	84
PID 552 wrote to memory of 2132	552	RFQ.exe	84
PID 2132 wrote to memory of 5008	2132	RFQ.exe	86
PID 2132 wrote to memory of 5008	2132	RFQ.exe	86
PID 2132 wrote to memory of 5008	2132	RFQ.exe	86
PID 2132 wrote to memory of 664	2132	RFQ.exe	88
PID 2132 wrote to memory of 664	2132	RFQ.exe	88
PID 2132 wrote to memory of 664	2132	RFQ.exe	88

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFQ.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFQ.exe

C:\Users\Admin\AppData\Local\Temp\RFQ.exe
"C:\Users\Admin\AppData\Local\Temp\RFQ.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:552
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\FzcrWS" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9271.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:5108
- C:\Users\Admin\AppData\Local\Temp\RFQ.exe
  "{path}"
  2⤵
  - Drops file in Drivers directory
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  - outlook_office_path
  - outlook_win_path
  PID:2132
- - C:\Windows\SysWOW64\REG.exe
    REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f
    3⤵
    - Modifies registry key
    PID:5008
- - C:\Windows\SysWOW64\netsh.exe
    "netsh" wlan show profile
    3⤵
    PID:664

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

tmp9271.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp9271.tmp
Size 1KB
SHA256 3a9fdbe1d003aeb6b8d66d8796f5405e494c02a3151be1914dc59e64a5826fbc
MD5 9b3f85784454362f113d70c56787b9f1
SHA1 1dfcd3f658e4c352195f2bd6e04dd6654c5aa715
SHA512 1def30d37a520d25f104920ec48db8fee16992bcf54fd9af6d9a9693e5671477e2ce387d9b6686c4fc2b7b0064a8493140d38ef85f247d79eec9326f5129ac2e
MD5 SHA1 SHA512

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memory/552-133-0x00000000058D0000-0x00000000058DA000-memory.dmp

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memory/552-132-0x00000000057A0000-0x0000000005832000-memory.dmp

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memory/552-130-0x0000000000D90000-0x0000000000DFE000-memory.dmp

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memory/552-134-0x0000000008F20000-0x0000000008FBC000-memory.dmp

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memory/552-131-0x0000000005E00000-0x00000000063A4000-memory.dmp

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memory/2132-138-0x0000000000400000-0x0000000000452000-memory.dmp

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memory/2132-139-0x0000000006680000-0x00000000066E6000-memory.dmp

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memory/2132-141-0x0000000006A80000-0x0000000006AD0000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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