agenttesla | ca690123d14bd3632ab53a076f8bfb7bd2176248af6b735af9719aca77a024b5

General

Target

z11FACTURA0987654567800.exe
Size

850KB
MD5

4c086ea2cf962b2584e7cc978092f414
SHA1

684a0a66447920947ce272d1db6479bac184d34b
SHA256

ca690123d14bd3632ab53a076f8bfb7bd2176248af6b735af9719aca77a024b5
SHA512

ea1aa1eb3d50c4f91d55538665cc2f32d470d6aae4b8decb14c508a67b7c8a7a8c7e02eecc7bd9553281cac21933b463bebc14046c1a48b8a9f269d27a5a13de
SSDEEP

24576:tthEVaPqLaxPrH9DZJ7jPiOrxScRujiCEj5uuv:VEVUcuZZJ7xE6v

Score

10^/10

agenttesla credential_access discovery keylogger spyware stealer trojan upx

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: ftp
Host:
ftp://ftp.antoniomayol.com:21
Port:
21
Username:
[email protected]
Password:
cMhKDQUk1{;%

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Glagolitic.vbs	Glagolitic.exe

Executes dropped EXE 1 IoCs

pid	Process
4292	Glagolitic.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/3492-0-0x0000000000400000-0x00000000004C2000-memory.dmp	upx
behavioral2/files/0x0007000000023483-6.dat	upx
behavioral2/memory/3492-9-0x0000000000400000-0x00000000004C2000-memory.dmp	upx
behavioral2/memory/4292-20-0x0000000000400000-0x00000000004C2000-memory.dmp	upx

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
3	ip-api.com

AutoIT Executable 3 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/3492-9-0x0000000000400000-0x00000000004C2000-memory.dmp	autoit_exe
behavioral2/memory/4292-13-0x0000000003F50000-0x0000000004350000-memory.dmp	autoit_exe
behavioral2/memory/4292-20-0x0000000000400000-0x00000000004C2000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4292 set thread context of 932	4292	Glagolitic.exe	83

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1588	4292	WerFault.exe	82

System Location Discovery: System Language Discovery 1 TTPs 3 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	z11FACTURA0987654567800.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Glagolitic.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
932	RegSvcs.exe
932	RegSvcs.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4292	Glagolitic.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	932	RegSvcs.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3492 wrote to memory of 4292	3492	z11FACTURA0987654567800.exe	82
PID 3492 wrote to memory of 4292	3492	z11FACTURA0987654567800.exe	82
PID 3492 wrote to memory of 4292	3492	z11FACTURA0987654567800.exe	82
PID 4292 wrote to memory of 932	4292	Glagolitic.exe	83
PID 4292 wrote to memory of 932	4292	Glagolitic.exe	83
PID 4292 wrote to memory of 932	4292	Glagolitic.exe	83
PID 4292 wrote to memory of 932	4292	Glagolitic.exe	83

C:\Users\Admin\AppData\Local\Temp\z11FACTURA0987654567800.exe
"C:\Users\Admin\AppData\Local\Temp\z11FACTURA0987654567800.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3492
- C:\Users\Admin\AppData\Local\prespecialist\Glagolitic.exe
  "C:\Users\Admin\AppData\Local\Temp\z11FACTURA0987654567800.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:4292
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Users\Admin\AppData\Local\Temp\z11FACTURA0987654567800.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:932
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4292 -s 716
    3⤵
    - Program crash
    PID:1588

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 4292 -ip 4292
1⤵
PID:1732

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

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\prespecialist\Glagolitic.exe

Filesize
850KB

MD5
4c086ea2cf962b2584e7cc978092f414

SHA1
684a0a66447920947ce272d1db6479bac184d34b

SHA256
ca690123d14bd3632ab53a076f8bfb7bd2176248af6b735af9719aca77a024b5

SHA512
ea1aa1eb3d50c4f91d55538665cc2f32d470d6aae4b8decb14c508a67b7c8a7a8c7e02eecc7bd9553281cac21933b463bebc14046c1a48b8a9f269d27a5a13de

Download Submit
memory/932-17-0x0000000005A10000-0x0000000005FB4000-memory.dmp

Filesize
5.6MB

Download
memory/932-18-0x00000000055D0000-0x0000000005636000-memory.dmp

Filesize
408KB

Download
memory/932-25-0x0000000073620000-0x0000000073DD0000-memory.dmp

Filesize
7.7MB

Download
memory/932-24-0x000000007362E000-0x000000007362F000-memory.dmp

Filesize
4KB

Download
memory/932-15-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/932-16-0x000000007362E000-0x000000007362F000-memory.dmp

Filesize
4KB

Download
memory/932-23-0x0000000006900000-0x000000000690A000-memory.dmp

Filesize
40KB

Download
memory/932-22-0x0000000006970000-0x0000000006A02000-memory.dmp

Filesize
584KB

Download
memory/932-19-0x0000000073620000-0x0000000073DD0000-memory.dmp

Filesize
7.7MB

Download
memory/932-21-0x0000000006880000-0x00000000068D0000-memory.dmp

Filesize
320KB

Download
memory/3492-9-0x0000000000400000-0x00000000004C2000-memory.dmp

Filesize
776KB

Download
memory/3492-0-0x0000000000400000-0x00000000004C2000-memory.dmp

Filesize
776KB

Download
memory/3492-3-0x00000000043A0000-0x00000000047A0000-memory.dmp

Filesize
4.0MB

Download
memory/4292-20-0x0000000000400000-0x00000000004C2000-memory.dmp

Filesize
776KB

Download
memory/4292-13-0x0000000003F50000-0x0000000004350000-memory.dmp

Filesize
4.0MB

Download

Analysis

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