agenttesla | b81d025cefcb2d4eca4ff307fc9aa27e4e28854225a7604bc56a596da3818b6a

General

Target

purchase order.exe
Size

482KB
MD5

cc8dd999e2986f15641dfad4362cf2a7
SHA1

abeb848ddcfba06a03ba90f4c55e28c56e47494c
SHA256

b6eecf6385766748acdbd8b0b350d9344f775495a0ca62a1dcca578d2b6100ca
SHA512

e43349ee45e8bed299a1cdbd0485f454f3c2dcc4f795e788541dc47860dda859584d34baef4306f4140783f9f39b6e6cb6f42da47e99428168511a0d59c147c0

Score

10^/10

agenttesla evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.pierreinsurancebrokers.com
Port:
587
Username:
[email protected]
Password:
advisor@1234

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/1124-62-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1124-61-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1124-63-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1124-64-0x0000000000446C5E-mapping.dmp	family_agenttesla
behavioral1/memory/1124-68-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1124-66-0x0000000000400000-0x000000000044C000-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:

purchase order.exe

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

purchase order.exe

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

Suspicious use of SetThreadContext 1 IoCs

Processes:

purchase order.exe

description pid process target process

PID 1280 set thread context of 1124 1280 purchase order.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

1292 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

MSBuild.exe

pid process

1124 MSBuild.exe
1124 MSBuild.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

MSBuild.exe

description pid process

Token: SeDebugPrivilege 1124 MSBuild.exe

description	pid	process	target process
PID 1280 set thread context of 1124	1280	purchase order.exe	MSBuild.exe

pid	process
1292	schtasks.exe

pid	process
1124	MSBuild.exe
1124	MSBuild.exe

description	pid	process
Token: SeDebugPrivilege	1124	MSBuild.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

purchase order.exe

description	pid	process	target process
PID 1280 wrote to memory of 1292	1280	purchase order.exe	schtasks.exe
PID 1280 wrote to memory of 1292	1280	purchase order.exe	schtasks.exe
PID 1280 wrote to memory of 1292	1280	purchase order.exe	schtasks.exe
PID 1280 wrote to memory of 1292	1280	purchase order.exe	schtasks.exe
PID 1280 wrote to memory of 1124	1280	purchase order.exe	MSBuild.exe
PID 1280 wrote to memory of 1124	1280	purchase order.exe	MSBuild.exe
PID 1280 wrote to memory of 1124	1280	purchase order.exe	MSBuild.exe
PID 1280 wrote to memory of 1124	1280	purchase order.exe	MSBuild.exe
PID 1280 wrote to memory of 1124	1280	purchase order.exe	MSBuild.exe
PID 1280 wrote to memory of 1124	1280	purchase order.exe	MSBuild.exe
PID 1280 wrote to memory of 1124	1280	purchase order.exe	MSBuild.exe
PID 1280 wrote to memory of 1124	1280	purchase order.exe	MSBuild.exe
PID 1280 wrote to memory of 1124	1280	purchase order.exe	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\purchase order.exe
"C:\Users\Admin\AppData\Local\Temp\purchase order.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1280

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PZDaFZwtnXm" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC44A.tmp"
2⤵
- Creates scheduled task(s)
PID:1292

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:1124

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\tmpC44A.tmp
Filesize
1KB

MD5
78f2284a3e1fbba8b3e8f89ab8fc24be

SHA1
c29983a67df82a95405b06aff342c4015883384d

SHA256
445684e4d5f72d053c1d26eb5c387404a23d6c0ccfbf0434289f147bbe83c2f4

SHA512
e83ac7e229e1722af18bd8fe4ee2510911b39a4a3a69893794249265d8b49f7466fdfecdb965a7c7263c0e18be1b0bc7b6e9df1c2617b0ecbac30427ffa3ad9c

Download Submit
memory/1124-62-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1124-59-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1124-58-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1124-61-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1124-63-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1124-64-0x0000000000446C5E-mapping.dmp

Download
memory/1124-68-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1124-66-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1124-70-0x0000000074190000-0x000000007473B000-memory.dmp

Filesize
5.7MB

Download
memory/1280-55-0x0000000074740000-0x0000000074CEB000-memory.dmp

Filesize
5.7MB

Download
memory/1280-54-0x00000000756E1000-0x00000000756E3000-memory.dmp

Filesize
8KB

Download
memory/1292-56-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads