agenttesla | c46ee625d9626c6583f1129a66c6044d50ae10ba95fec689e13646a0278afbe0

General

Target

Packing.scr
Size

566KB
MD5

aca270dcb0654e6e0480cb2287934969
SHA1

9167e147f41f53736531e3e0791774caeab74341
SHA256

a17afb19461b7a3a23576250e3fe3a3970afa5a143167fe97e97aeadcd9705d4
SHA512

dc97a0bf6805b1ec1354c2c035dcbfef70a3c8634eab335dcbedb76831a6dab5e441fab3b52f5a09a51855ff242354df69d48840858e02f818fe0c7114afa5e1

Score

10^/10

agenttesla collection evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.gmail.com
Port:
587
Username:
[email protected]
Password:
z123456789ok

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral3/memory/688-61-0x0000000000400000-0x000000000045A000-memory.dmp	family_agenttesla
behavioral3/memory/688-62-0x0000000000400000-0x000000000045A000-memory.dmp	family_agenttesla
behavioral3/memory/688-64-0x000000000045449E-mapping.dmp	family_agenttesla
behavioral3/memory/688-63-0x0000000000400000-0x000000000045A000-memory.dmp	family_agenttesla
behavioral3/memory/688-66-0x0000000000400000-0x000000000045A000-memory.dmp	family_agenttesla
behavioral3/memory/688-68-0x0000000000400000-0x000000000045A000-memory.dmp	family_agenttesla

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Packing.scr

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	Packing.scr
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Packing.scr

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

MSBuild.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

Packing.scr

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	Packing.scr
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	Packing.scr

Suspicious use of SetThreadContext 1 IoCs

Processes:

Packing.scr

description pid process target process

PID 1312 set thread context of 688 1312 Packing.scr MSBuild.exe
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

Processes:

schtasks.exe

pid process

1908 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

Packing.scrMSBuild.exe

pid process

1312 Packing.scr
688 MSBuild.exe
688 MSBuild.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Packing.scrMSBuild.exe

description pid process

Token: SeDebugPrivilege 1312 Packing.scr
Token: SeDebugPrivilege 688 MSBuild.exe

description	pid	process	target process
PID 1312 set thread context of 688	1312	Packing.scr	MSBuild.exe

pid	process
1908	schtasks.exe

pid	process
1312	Packing.scr
688	MSBuild.exe
688	MSBuild.exe

description	pid	process
Token: SeDebugPrivilege	1312	Packing.scr
Token: SeDebugPrivilege	688	MSBuild.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

Packing.scr

description	pid	process	target process
PID 1312 wrote to memory of 1908	1312	Packing.scr	schtasks.exe
PID 1312 wrote to memory of 1908	1312	Packing.scr	schtasks.exe
PID 1312 wrote to memory of 1908	1312	Packing.scr	schtasks.exe
PID 1312 wrote to memory of 1908	1312	Packing.scr	schtasks.exe
PID 1312 wrote to memory of 688	1312	Packing.scr	MSBuild.exe
PID 1312 wrote to memory of 688	1312	Packing.scr	MSBuild.exe
PID 1312 wrote to memory of 688	1312	Packing.scr	MSBuild.exe
PID 1312 wrote to memory of 688	1312	Packing.scr	MSBuild.exe
PID 1312 wrote to memory of 688	1312	Packing.scr	MSBuild.exe
PID 1312 wrote to memory of 688	1312	Packing.scr	MSBuild.exe
PID 1312 wrote to memory of 688	1312	Packing.scr	MSBuild.exe
PID 1312 wrote to memory of 688	1312	Packing.scr	MSBuild.exe
PID 1312 wrote to memory of 688	1312	Packing.scr	MSBuild.exe

outlook_office_path 1 IoCs

Processes:

MSBuild.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

outlook_win_path 1 IoCs

Processes:

MSBuild.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\Packing.scr
"C:\Users\Admin\AppData\Local\Temp\Packing.scr" /S
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1312

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vzlcamQxGCgKJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6578.tmp"
2⤵
- Creates scheduled task(s)
PID:1908

C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:688

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Query Registry

4

T1012

Virtualization/Sandbox Evasion

2

T1497

System Information Discovery

3

T1082

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp6578.tmp
Filesize
1KB

MD5
cfbf50e85c0dfb5ee27afa4670e6dd57

SHA1
623240f8a857c77ecf1a2a39717cb3a9996ee982

SHA256
aed447cc8dcefd01e54ee060129b75a2171652eddab7bb3f11feb43e4719a64e

SHA512
6ea643dfa9f1c1698bafe41acacf1c3976f59ce6140f067530c1f94272917d0e91bab312b30a0c905545e8bd99645c1dc5a3f39978a02aba6fecd1278feb9738

Download Submit
memory/688-61-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/688-58-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/688-59-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/688-62-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/688-64-0x000000000045449E-mapping.dmp

Download
memory/688-63-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/688-66-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/688-68-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/688-70-0x0000000074910000-0x0000000074EBB000-memory.dmp

Filesize
5.7MB

Download
memory/1312-55-0x0000000074910000-0x0000000074EBB000-memory.dmp

Filesize
5.7MB

Download
memory/1312-54-0x0000000076451000-0x0000000076453000-memory.dmp

Filesize
8KB

Download
memory/1908-56-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads