agenttesla | 9a128d7ba3cf8ed1f2aba6a777a44cf9580376cb8c2f44c5cc139fad08399f20

General

Target

EXTRACTO BANCARIO.PDF.bat.exe
Size

379KB
MD5

83feada9a3286828aa97e58014dd0750
SHA1

86124ee8bb31d7bead2472234d4cafe8f19b5f25
SHA256

9a128d7ba3cf8ed1f2aba6a777a44cf9580376cb8c2f44c5cc139fad08399f20
SHA512

46b7eb3a31a68dd62218430da75c275bf6b025cab28365b9aff7bbdd6c44de76d713d8403eb0cce71b028bb8852a9c747170b871ed73ad8bdf63eace923f45fd
SSDEEP

6144:NIw3EwpCSb69ZYNDuvH4zdEFa70ij9+ThwjKvpNwYH3JdPEnNi9eRDVFkC/TlO5u:gSbqaAoduu0BtWOpN7X/ERDJQ5ygA

Score

10^/10

agenttesla guloader collection discovery downloader keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.phytomer.es
Port:
587
Username:
[email protected]
Password:
@Paqui0033-*
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

description	ioc	Process
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	EXTRACTO BANCARIO.PDF.bat.exe
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	caspol.exe

Loads dropped DLL 2 IoCs

pid	Process
1676	EXTRACTO BANCARIO.PDF.bat.exe
1676	EXTRACTO BANCARIO.PDF.bat.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	caspol.exe
Key opened	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	caspol.exe
Key opened	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	caspol.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
1640	caspol.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1676	EXTRACTO BANCARIO.PDF.bat.exe
1640	caspol.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1676 set thread context of 1640	1676	EXTRACTO BANCARIO.PDF.bat.exe	29

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1640	caspol.exe
1640	caspol.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1676	EXTRACTO BANCARIO.PDF.bat.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1640	caspol.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1676 wrote to memory of 1640	1676	EXTRACTO BANCARIO.PDF.bat.exe	29
PID 1676 wrote to memory of 1640	1676	EXTRACTO BANCARIO.PDF.bat.exe	29
PID 1676 wrote to memory of 1640	1676	EXTRACTO BANCARIO.PDF.bat.exe	29
PID 1676 wrote to memory of 1640	1676	EXTRACTO BANCARIO.PDF.bat.exe	29
PID 1676 wrote to memory of 1640	1676	EXTRACTO BANCARIO.PDF.bat.exe	29

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	caspol.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	caspol.exe

C:\Users\Admin\AppData\Local\Temp\EXTRACTO BANCARIO.PDF.bat.exe
"C:\Users\Admin\AppData\Local\Temp\EXTRACTO BANCARIO.PDF.bat.exe"
1⤵
- Checks QEMU agent file
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1676
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
  "C:\Users\Admin\AppData\Local\Temp\EXTRACTO BANCARIO.PDF.bat.exe"
  2⤵
  - Checks QEMU agent file
  - Accesses Microsoft Outlook profiles
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:1640

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Web Service

1

T1102

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsdFA49.tmp\System.dll

Filesize
11KB

MD5
8b3830b9dbf87f84ddd3b26645fed3a0

SHA1
223bef1f19e644a610a0877d01eadc9e28299509

SHA256
f004c568d305cd95edbd704166fcd2849d395b595dff814bcc2012693527ac37

SHA512
d13cfd98db5ca8dc9c15723eee0e7454975078a776bce26247228be4603a0217e166058ebadc68090afe988862b7514cb8cb84de13b3de35737412a6f0a8ac03

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Imidazolyl.ini

Filesize
37B

MD5
2e6676d90bd2ad7fc51ad7aa5d517779

SHA1
b29f0d8b7a05e60821fd3947597a51c2958de40b

SHA256
19c6bfa0180b3b10165d73c608ede7ae408840ce09edbcf77b23626e452f2106

SHA512
10eed25590e731b492f0cb875dd7bbad1ffb46726398abc3121b573d9d56c03e643abb049ff8f83319422a39edf0577ea68f31ce2f6e31fdca398e5e6ae9b10b

Download Submit
\Users\Admin\AppData\Local\Temp\nsdFA49.tmp\System.dll

Filesize
11KB

MD5
8b3830b9dbf87f84ddd3b26645fed3a0

SHA1
223bef1f19e644a610a0877d01eadc9e28299509

SHA256
f004c568d305cd95edbd704166fcd2849d395b595dff814bcc2012693527ac37

SHA512
d13cfd98db5ca8dc9c15723eee0e7454975078a776bce26247228be4603a0217e166058ebadc68090afe988862b7514cb8cb84de13b3de35737412a6f0a8ac03

Download Submit
\Users\Admin\AppData\Local\Temp\nsdFA49.tmp\System.dll

Filesize
11KB

MD5
8b3830b9dbf87f84ddd3b26645fed3a0

SHA1
223bef1f19e644a610a0877d01eadc9e28299509

SHA256
f004c568d305cd95edbd704166fcd2849d395b595dff814bcc2012693527ac37

SHA512
d13cfd98db5ca8dc9c15723eee0e7454975078a776bce26247228be4603a0217e166058ebadc68090afe988862b7514cb8cb84de13b3de35737412a6f0a8ac03

Download Submit
memory/1640-98-0x0000000000400000-0x0000000000615000-memory.dmp

Filesize
2.1MB

Download
memory/1640-73-0x0000000000BA0000-0x0000000001864000-memory.dmp

Filesize
12.8MB

Download
memory/1640-75-0x0000000000400000-0x0000000000615000-memory.dmp

Filesize
2.1MB

Download
memory/1640-97-0x0000000000BA0000-0x0000000001864000-memory.dmp

Filesize
12.8MB

Download
memory/1640-99-0x0000000000BA0000-0x0000000001864000-memory.dmp

Filesize
12.8MB

Download
memory/1640-100-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1640-102-0x0000000001930000-0x0000000001970000-memory.dmp

Filesize
256KB

Download
memory/1640-104-0x0000000001930000-0x0000000001970000-memory.dmp

Filesize
256KB

Download
memory/1676-74-0x00000000035E0000-0x00000000042A4000-memory.dmp

Filesize
12.8MB

Download
memory/1676-72-0x00000000035E0000-0x00000000042A4000-memory.dmp

Filesize
12.8MB

Download

Analysis

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