agenttesla | af326a34efc85541f5da41eba908c3fb6532c61d0b75038fa0d7350db1490d12

General

Target

REACH_ST.exe
Size

489KB
MD5

e151d6912989eea1ed5f7fb70d24bd0d
SHA1

1e7a5887f6da7929e33d97f6c068ab26f6c5017f
SHA256

9d16660c6cbee0c09d8046e43cec9523ca047f7478723c7e04a255c644794c6e
SHA512

22e7561a8050c8c2b58f56fff47c5e279ce9c3330dad3f2969bff4776250ef29fff84e5270da0bf01c9fb752367f6e64dcc2bc2eefdb40c99d17ad7995f9cf4b

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
behavioral5/memory/1892-61-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral5/memory/1892-62-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral5/memory/1892-63-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral5/memory/1892-64-0x000000000044734E-mapping.dmp	family_agenttesla
behavioral5/memory/1892-66-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral5/memory/1892-68-0x0000000000400000-0x000000000044C000-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:

REACH_ST.exe

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

REACH_ST.exe

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

Suspicious use of SetThreadContext 1 IoCs

Processes:

REACH_ST.exe

description pid process target process

PID 1900 set thread context of 1892 1900 REACH_ST.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

524 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

REACH_ST.exeMSBuild.exe

pid process

1900 REACH_ST.exe
1892 MSBuild.exe
1892 MSBuild.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

REACH_ST.exeMSBuild.exe

description pid process

Token: SeDebugPrivilege 1900 REACH_ST.exe
Token: SeDebugPrivilege 1892 MSBuild.exe

description	pid	process	target process
PID 1900 set thread context of 1892	1900	REACH_ST.exe	MSBuild.exe

pid	process
524	schtasks.exe

pid	process
1900	REACH_ST.exe
1892	MSBuild.exe
1892	MSBuild.exe

description	pid	process
Token: SeDebugPrivilege	1900	REACH_ST.exe
Token: SeDebugPrivilege	1892	MSBuild.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

REACH_ST.exe

description	pid	process	target process
PID 1900 wrote to memory of 524	1900	REACH_ST.exe	schtasks.exe
PID 1900 wrote to memory of 524	1900	REACH_ST.exe	schtasks.exe
PID 1900 wrote to memory of 524	1900	REACH_ST.exe	schtasks.exe
PID 1900 wrote to memory of 524	1900	REACH_ST.exe	schtasks.exe
PID 1900 wrote to memory of 1892	1900	REACH_ST.exe	MSBuild.exe
PID 1900 wrote to memory of 1892	1900	REACH_ST.exe	MSBuild.exe
PID 1900 wrote to memory of 1892	1900	REACH_ST.exe	MSBuild.exe
PID 1900 wrote to memory of 1892	1900	REACH_ST.exe	MSBuild.exe
PID 1900 wrote to memory of 1892	1900	REACH_ST.exe	MSBuild.exe
PID 1900 wrote to memory of 1892	1900	REACH_ST.exe	MSBuild.exe
PID 1900 wrote to memory of 1892	1900	REACH_ST.exe	MSBuild.exe
PID 1900 wrote to memory of 1892	1900	REACH_ST.exe	MSBuild.exe
PID 1900 wrote to memory of 1892	1900	REACH_ST.exe	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\REACH_ST.exe
"C:\Users\Admin\AppData\Local\Temp\REACH_ST.exe"
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:1900

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\HdyljDHr" /XML "C:\Users\Admin\AppData\Local\Temp\tmp84DA.tmp"
2⤵
- Creates scheduled task(s)
PID:524

C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1892

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\tmp84DA.tmp
Filesize
1KB

MD5
14026e0261f88e727741a602df27b018

SHA1
b7849a26ea442d217a3072d5cacd88fc1ceb1761

SHA256
464269379ad5e9060f11e7be7b959b8af1c21365342edfc4dbe19620217e36bd

SHA512
33cb57724003e39e869535f85388beb11d181beab67322fe2adc77d48966a9af77cb200aee576dcb23f4e5dfd1f4b650c55560889c076fb441e8728a1ae1e61d

Download Submit
memory/524-56-0x0000000000000000-mapping.dmp

Download
memory/1892-62-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1892-59-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1892-61-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1892-58-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1892-63-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1892-64-0x000000000044734E-mapping.dmp

Download
memory/1892-66-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1892-68-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1892-70-0x0000000073F90000-0x000000007453B000-memory.dmp

Filesize
5.7MB

Download
memory/1900-55-0x0000000073F90000-0x000000007453B000-memory.dmp

Filesize
5.7MB

Download
memory/1900-54-0x0000000075FB1000-0x0000000075FB3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads