agenttesla | af326a34efc85541f5da41eba908c3fb6532c61d0b75038fa0d7350db1490d12

General

Target

BV10013_.exe
Size

490KB
MD5

75c564a6cdbdabbfebc987ca24175e8f
SHA1

d20db6904b85c9e65a62aa0d14cb673f7f8d5678
SHA256

a83a9e5760babc377c95ad2aa5d8b9e895f445cf4c0f8869a4ebc4be3fbaf3e9
SHA512

0317342c9347dca4c5cb41151149696807830b49865bc47657616ba60a7ed5102f08e0daa849871bb9cc948db2b1a08916ee5da067ef16c3eceebe4a53bc8ad6

Score

10^/10

agenttesla evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.gmail.com
Port:
587
Username:
onnybekee2@gmail.com
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
behavioral1/memory/992-64-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/992-65-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/992-66-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/992-67-0x000000000044703E-mapping.dmp	family_agenttesla
behavioral1/memory/992-69-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/992-71-0x0000000000400000-0x000000000044C000-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:

BV10013_.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	BV10013_.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	BV10013_.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:

BV10013_.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	BV10013_.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	BV10013_.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

BV10013_.exe

description pid process target process

PID 1588 set thread context of 992 1588 BV10013_.exe 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

564 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

MSBuild.exe

pid process

992 MSBuild.exe
992 MSBuild.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

MSBuild.exe

description pid process

Token: SeDebugPrivilege 992 MSBuild.exe

description	pid	process	target process
PID 1588 set thread context of 992	1588	BV10013_.exe	MSBuild.exe

pid	process
564	schtasks.exe

pid	process
992	MSBuild.exe
992	MSBuild.exe

description	pid	process
Token: SeDebugPrivilege	992	MSBuild.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

BV10013_.exe

description	pid	process	target process
PID 1588 wrote to memory of 564	1588	BV10013_.exe	schtasks.exe
PID 1588 wrote to memory of 564	1588	BV10013_.exe	schtasks.exe
PID 1588 wrote to memory of 564	1588	BV10013_.exe	schtasks.exe
PID 1588 wrote to memory of 564	1588	BV10013_.exe	schtasks.exe
PID 1588 wrote to memory of 992	1588	BV10013_.exe	MSBuild.exe
PID 1588 wrote to memory of 992	1588	BV10013_.exe	MSBuild.exe
PID 1588 wrote to memory of 992	1588	BV10013_.exe	MSBuild.exe
PID 1588 wrote to memory of 992	1588	BV10013_.exe	MSBuild.exe
PID 1588 wrote to memory of 992	1588	BV10013_.exe	MSBuild.exe
PID 1588 wrote to memory of 992	1588	BV10013_.exe	MSBuild.exe
PID 1588 wrote to memory of 992	1588	BV10013_.exe	MSBuild.exe
PID 1588 wrote to memory of 992	1588	BV10013_.exe	MSBuild.exe
PID 1588 wrote to memory of 992	1588	BV10013_.exe	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\BV10013_.exe
"C:\Users\Admin\AppData\Local\Temp\BV10013_.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1588

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QfDjfEX" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA6CB.tmp"
2⤵
- Creates scheduled task(s)
PID:564

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:992

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

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpA6CB.tmp
Filesize
1KB

MD5
ba328fc53cfab5d76f4e1e09def230ac

SHA1
9c466dbb9240e054eedb64d65da887c0f278f223

SHA256
55143cbeda53c15490fa0ae429d93aad4e4accc5404254cdb70af9d01154a607

SHA512
d51f5b454005b5ff2598beeec2f625fed3d31881d83c0885d729bbf425e6354090d36b40b729db8093167c6ea00e87c2aac1e93f384d35ca2cb3e446672758a3

Download Submit
memory/564-59-0x0000000000000000-mapping.dmp

Download
memory/992-64-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/992-61-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/992-62-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/992-65-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/992-66-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/992-67-0x000000000044703E-mapping.dmp

Download
memory/992-69-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/992-71-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1588-57-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/1588-58-0x0000000004DD0000-0x0000000004E24000-memory.dmp

Filesize
336KB

Download
memory/1588-56-0x00000000021A0000-0x0000000002204000-memory.dmp

Filesize
400KB

Download
memory/1588-55-0x0000000076191000-0x0000000076193000-memory.dmp

Filesize
8KB

Download
memory/1588-54-0x0000000000880000-0x0000000000902000-memory.dmp

Filesize
520KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads