agenttesla | 46903e776f2014fcd877ba071d2707c749ddae140e7682f5cc00c894914f3303

General

Target

JUSTIFICANTE DE PAGO30032023pdf.exe
Size

766KB
MD5

08422117b96b96d5164ef061bf874307
SHA1

3ff48d4a298db79468ab8716a9814f2fe703e031
SHA256

46903e776f2014fcd877ba071d2707c749ddae140e7682f5cc00c894914f3303
SHA512

22bdb0737d070e0783cdb2d311d827215b750d16ce29345266812ba61d2d9067c0bbe865df34dab37e9af56c96fba63547f7bf05cd1b7c1c8af10d4233102fc4
SSDEEP

12288:/ghti/pIS61qK7fXHUoTQDsqRaKbygMG9IFqnWAQsZufEIx5tx715v1:4O2A0fXHUSkdRPy1GRWAQRMIxTR13

Score

10^/10

agenttesla guloader collection downloader keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
opticaarense.com
Port:
587
Username:
[email protected]
Password:
vGU5B*g^8Med
Email To:
[email protected]

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader

Checks QEMU agent file 2 TTPs 2 IoCs

Checks presence of QEMU agent, possibly to detect virtualization.

Query Registry

T1012

System Information Discovery

T1082

Processes:

JUSTIFICANTE DE PAGO30032023pdf.execaspol.exe

description	ioc	process
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	JUSTIFICANTE DE PAGO30032023pdf.exe
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	caspol.exe

Loads dropped DLL 2 IoCs

Processes:

JUSTIFICANTE DE PAGO30032023pdf.exe

pid process

1556 JUSTIFICANTE DE PAGO30032023pdf.exe
1556 JUSTIFICANTE DE PAGO30032023pdf.exe

pid	process
1556	JUSTIFICANTE DE PAGO30032023pdf.exe
1556	JUSTIFICANTE DE PAGO30032023pdf.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

caspol.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	caspol.exe
Key opened	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	caspol.exe
Key opened	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	caspol.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Drops file in System32 directory 1 IoCs

Processes:

JUSTIFICANTE DE PAGO30032023pdf.exe

description ioc process

File opened for modification C:\Windows\SysWOW64\Indbildningerne.Pro JUSTIFICANTE DE PAGO30032023pdf.exe
Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

Processes:

caspol.exe

pid process

1784 caspol.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

JUSTIFICANTE DE PAGO30032023pdf.execaspol.exe

pid process

1556 JUSTIFICANTE DE PAGO30032023pdf.exe
1784 caspol.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

JUSTIFICANTE DE PAGO30032023pdf.exe

description pid process target process

PID 1556 set thread context of 1784 1556 JUSTIFICANTE DE PAGO30032023pdf.exe caspol.exe
Drops file in Program Files directory 1 IoCs

Processes:

JUSTIFICANTE DE PAGO30032023pdf.exe

description ioc process

File opened for modification C:\Program Files (x86)\Common Files\Billardet\Studiers.ini JUSTIFICANTE DE PAGO30032023pdf.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\Indbildningerne.Pro	JUSTIFICANTE DE PAGO30032023pdf.exe

pid	process
1784	caspol.exe

pid	process
1556	JUSTIFICANTE DE PAGO30032023pdf.exe
1784	caspol.exe

description	pid	process	target process
PID 1556 set thread context of 1784	1556	JUSTIFICANTE DE PAGO30032023pdf.exe	caspol.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Common Files\Billardet\Studiers.ini	JUSTIFICANTE DE PAGO30032023pdf.exe

Drops file in Windows directory 3 IoCs

Processes:

JUSTIFICANTE DE PAGO30032023pdf.exe

description	ioc	process
File opened for modification	C:\Windows\Fonts\Emotionen\Marsh\Mineringerne251\broeboe.Spa	JUSTIFICANTE DE PAGO30032023pdf.exe
File opened for modification	C:\Windows\resources\Probangs92\Bermes\Restamps\Downgoing.Pre	JUSTIFICANTE DE PAGO30032023pdf.exe
File opened for modification	C:\Windows\resources\0409\Stadfastes\Hjemmetysk.ini	JUSTIFICANTE DE PAGO30032023pdf.exe

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

System Information Discovery
T1082
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

JUSTIFICANTE DE PAGO30032023pdf.exe

pid process

1556 JUSTIFICANTE DE PAGO30032023pdf.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

caspol.exe

description pid process

Token: SeDebugPrivilege 1784 caspol.exe

pid	process
1556	JUSTIFICANTE DE PAGO30032023pdf.exe

description	pid	process
Token: SeDebugPrivilege	1784	caspol.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

JUSTIFICANTE DE PAGO30032023pdf.exe

description	pid	process	target process
PID 1556 wrote to memory of 1784	1556	JUSTIFICANTE DE PAGO30032023pdf.exe	caspol.exe
PID 1556 wrote to memory of 1784	1556	JUSTIFICANTE DE PAGO30032023pdf.exe	caspol.exe
PID 1556 wrote to memory of 1784	1556	JUSTIFICANTE DE PAGO30032023pdf.exe	caspol.exe
PID 1556 wrote to memory of 1784	1556	JUSTIFICANTE DE PAGO30032023pdf.exe	caspol.exe
PID 1556 wrote to memory of 1784	1556	JUSTIFICANTE DE PAGO30032023pdf.exe	caspol.exe

outlook_office_path 1 IoCs

Processes:

caspol.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	caspol.exe

outlook_win_path 1 IoCs

Processes:

caspol.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	caspol.exe

C:\Users\Admin\AppData\Local\Temp\JUSTIFICANTE DE PAGO30032023pdf.exe
"C:\Users\Admin\AppData\Local\Temp\JUSTIFICANTE DE PAGO30032023pdf.exe"
1⤵
- Checks QEMU agent file
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1556

C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
"C:\Users\Admin\AppData\Local\Temp\JUSTIFICANTE DE PAGO30032023pdf.exe"
2⤵
- Checks QEMU agent file
- Accesses Microsoft Outlook profiles
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:1784

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Web Service

1

T1102

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\nsd10D5.tmp\AdvSplash.dll
Filesize
6KB

MD5
505c7c214c17ac801f5930abc57d38c3

SHA1
e9a17ed8182f92bf86babbd7ba8dd8770e8ff47e

SHA256
999ebf5ef6bf51828193deaf7697e6d22419e437c65e603bffa0bb2acc7f40c8

SHA512
30686f361db9d81c95912700af530529d4d89bf6b514a63ab5db6b20efc443b87aef44b598e45d33adee448ec1b6573ca035a1d20e11c78ea8253f1ecf5ebf38

Download Submit
\Users\Admin\AppData\Local\Temp\nsd10D5.tmp\System.dll
Filesize
11KB

MD5
a4dd044bcd94e9b3370ccf095b31f896

SHA1
17c78201323ab2095bc53184aa8267c9187d5173

SHA256
2e226715419a5882e2e14278940ee8ef0aa648a3ef7af5b3dc252674111962bc

SHA512
87335a43b9ca13e1300c7c23e702e87c669e2bcf4f6065f0c684fc53165e9c1f091cc4d79a3eca3910f0518d3b647120ac0be1a68eaade2e75eaa64adfc92c5a

Download Submit
memory/1556-72-0x0000000003830000-0x0000000006B15000-memory.dmp

Filesize
50.9MB

Download
memory/1556-73-0x0000000003830000-0x0000000006B15000-memory.dmp

Filesize
50.9MB

Download
memory/1784-74-0x0000000000FE0000-0x00000000042C5000-memory.dmp

Filesize
50.9MB

Download
memory/1784-75-0x0000000000400000-0x0000000000615000-memory.dmp

Filesize
2.1MB

Download
memory/1784-97-0x0000000000400000-0x0000000000615000-memory.dmp

Filesize
2.1MB

Download
memory/1784-98-0x0000000000FE0000-0x00000000042C5000-memory.dmp

Filesize
50.9MB

Download
memory/1784-99-0x0000000000FE0000-0x00000000042C5000-memory.dmp

Filesize
50.9MB

Download
memory/1784-101-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1784-102-0x0000000036EC0000-0x0000000036F00000-memory.dmp

Filesize
256KB

Download
memory/1784-104-0x0000000036EC0000-0x0000000036F00000-memory.dmp

Filesize
256KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads