agenttesla | 06146002319e655ea5e677ffada926dce41e36c667cf17c3604069c87cf68420

General

Target

Pictures.scr
Size

614KB
MD5

0548042de08d966daf12706ecef02860
SHA1

2551f1cf8b224368ebbfaa02e39ad360c9693658
SHA256

1e7474f09fbb2601bdc6f5e77ec90a9db99115e8392ba1629349f9b59f54d272
SHA512

e0c1f998eb363454bd11dae8376b77ed373004078f61e0f8bf81baae01a5d08608290ead31236506aceacba60fa51456c49ac702bceea93f2cf14edd73931fb7

Score

10^/10

agenttesla 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
behavioral5/memory/1948-64-0x0000000000400000-0x000000000045A000-memory.dmp	family_agenttesla
behavioral5/memory/1948-65-0x0000000000400000-0x000000000045A000-memory.dmp	family_agenttesla
behavioral5/memory/1948-66-0x0000000000400000-0x000000000045A000-memory.dmp	family_agenttesla
behavioral5/memory/1948-67-0x000000000045480E-mapping.dmp	family_agenttesla
behavioral5/memory/1948-69-0x0000000000400000-0x000000000045A000-memory.dmp	family_agenttesla
behavioral5/memory/1948-71-0x0000000000400000-0x000000000045A000-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:

Pictures.scr

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

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:

Pictures.scr

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

Suspicious use of SetThreadContext 1 IoCs

Processes:

Pictures.scr

description pid process target process

PID 1656 set thread context of 1948 1656 Pictures.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

588 schtasks.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

Pictures.scrMSBuild.exe

pid process

1656 Pictures.scr
1656 Pictures.scr
1656 Pictures.scr
1948 MSBuild.exe
1948 MSBuild.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Pictures.scrMSBuild.exe

description pid process

Token: SeDebugPrivilege 1656 Pictures.scr
Token: SeDebugPrivilege 1948 MSBuild.exe

description	pid	process	target process
PID 1656 set thread context of 1948	1656	Pictures.scr	MSBuild.exe

pid	process
588	schtasks.exe

pid	process
1656	Pictures.scr
1656	Pictures.scr
1656	Pictures.scr
1948	MSBuild.exe
1948	MSBuild.exe

description	pid	process
Token: SeDebugPrivilege	1656	Pictures.scr
Token: SeDebugPrivilege	1948	MSBuild.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

Pictures.scr

description	pid	process	target process
PID 1656 wrote to memory of 588	1656	Pictures.scr	schtasks.exe
PID 1656 wrote to memory of 588	1656	Pictures.scr	schtasks.exe
PID 1656 wrote to memory of 588	1656	Pictures.scr	schtasks.exe
PID 1656 wrote to memory of 588	1656	Pictures.scr	schtasks.exe
PID 1656 wrote to memory of 1564	1656	Pictures.scr	MSBuild.exe
PID 1656 wrote to memory of 1564	1656	Pictures.scr	MSBuild.exe
PID 1656 wrote to memory of 1564	1656	Pictures.scr	MSBuild.exe
PID 1656 wrote to memory of 1564	1656	Pictures.scr	MSBuild.exe
PID 1656 wrote to memory of 1388	1656	Pictures.scr	MSBuild.exe
PID 1656 wrote to memory of 1388	1656	Pictures.scr	MSBuild.exe
PID 1656 wrote to memory of 1388	1656	Pictures.scr	MSBuild.exe
PID 1656 wrote to memory of 1388	1656	Pictures.scr	MSBuild.exe
PID 1656 wrote to memory of 1948	1656	Pictures.scr	MSBuild.exe
PID 1656 wrote to memory of 1948	1656	Pictures.scr	MSBuild.exe
PID 1656 wrote to memory of 1948	1656	Pictures.scr	MSBuild.exe
PID 1656 wrote to memory of 1948	1656	Pictures.scr	MSBuild.exe
PID 1656 wrote to memory of 1948	1656	Pictures.scr	MSBuild.exe
PID 1656 wrote to memory of 1948	1656	Pictures.scr	MSBuild.exe
PID 1656 wrote to memory of 1948	1656	Pictures.scr	MSBuild.exe
PID 1656 wrote to memory of 1948	1656	Pictures.scr	MSBuild.exe
PID 1656 wrote to memory of 1948	1656	Pictures.scr	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\Pictures.scr
"C:\Users\Admin\AppData\Local\Temp\Pictures.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:1656

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\hydlmGyJywexkm" /XML "C:\Users\Admin\AppData\Local\Temp\tmp62AA.tmp"
2⤵
- Creates scheduled task(s)
PID:588

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
2⤵
PID:1564

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
2⤵
PID:1388

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1948

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

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

3

T1082

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp62AA.tmp
Filesize
1KB

MD5
e953870cdecdd2142d84eecd4631380e

SHA1
ceb39ba4c291892fa8a1183964f2e53174752a29

SHA256
9f8c603de8d5e34ca9f4a1ecc250172e43f349f4fa00049e7173c391050be8fe

SHA512
7a56bc8543f092c5a7b81c539c5d10d47709658520743b951ed838547a2b10b16d52424ec45ebcc6fba22c1a8abcfb69c32132b6168ebe678f4bab94b3ffd120

Download Submit
memory/588-59-0x0000000000000000-mapping.dmp

Download
memory/1656-57-0x0000000004900000-0x000000000496C000-memory.dmp

Filesize
432KB

Download
memory/1656-54-0x0000000000DC0000-0x0000000000E5E000-memory.dmp

Filesize
632KB

Download
memory/1656-58-0x0000000004DB0000-0x0000000004E0A000-memory.dmp

Filesize
360KB

Download
memory/1656-56-0x0000000000260000-0x000000000026A000-memory.dmp

Filesize
40KB

Download
memory/1656-55-0x0000000075A61000-0x0000000075A63000-memory.dmp

Filesize
8KB

Download
memory/1948-61-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1948-62-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1948-64-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1948-65-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1948-66-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1948-67-0x000000000045480E-mapping.dmp

Download
memory/1948-69-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1948-71-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads