agenttesla | 85627117b351e81655bb56b947b61a198d195a225db0e002ef476460b9f273ac

General

Target

INVOICE & TELEX BL_PDF.exe
Size

862KB
MD5

22a2657bb48e3303f6f0a0fd1fdfe441
SHA1

d6a230a732f3d691a7fce60081f30627ffabd33d
SHA256

85627117b351e81655bb56b947b61a198d195a225db0e002ef476460b9f273ac
SHA512

5e24b5f9c3886c9fdeaa968ccc59882b24a4c4cf8d90f4ae7d44ba4ed96bc91800d2f98c1eace2426a5dfe7a16f7c1233b1d54607d17ccba490d9e03514d569c

Score

10^/10

agenttesla evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.zfftcn.com
Port:
587
Username:
slot2@zfftcn.com
Password:
*VNHf^L9

Signatures

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

AgentTesla Payload 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2320-132-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral2/memory/2320-133-0x00000000004375EE-mapping.dmp	family_agenttesla
behavioral2/memory/2320-147-0x0000000005620000-0x0000000005B1E000-memory.dmp	family_agenttesla

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Drops file in Drivers directory 1 IoCs

Processes:

INVOICE & TELEX BL_PDF.exe

description ioc process

File opened for modification C:\Windows\system32\drivers\etc\hosts INVOICE & TELEX BL_PDF.exe
Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

description	ioc	process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	INVOICE & TELEX BL_PDF.exe

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:

INVOICE & TELEX BL_PDF.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	INVOICE & TELEX BL_PDF.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	INVOICE & TELEX BL_PDF.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

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:

INVOICE & TELEX BL_PDF.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	INVOICE & TELEX BL_PDF.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum\0	INVOICE & TELEX BL_PDF.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

INVOICE & TELEX BL_PDF.exe

description pid process target process

PID 1808 set thread context of 2320 1808 INVOICE & TELEX BL_PDF.exe INVOICE & TELEX BL_PDF.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

powershell.exeINVOICE & TELEX BL_PDF.exe

pid process

2792 powershell.exe
2320 INVOICE & TELEX BL_PDF.exe
2320 INVOICE & TELEX BL_PDF.exe
2792 powershell.exe
2792 powershell.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exeINVOICE & TELEX BL_PDF.exe

description pid process

Token: SeDebugPrivilege 2792 powershell.exe
Token: SeDebugPrivilege 2320 INVOICE & TELEX BL_PDF.exe

description	pid	process	target process
PID 1808 set thread context of 2320	1808	INVOICE & TELEX BL_PDF.exe	INVOICE & TELEX BL_PDF.exe

pid	process
2792	powershell.exe
2320	INVOICE & TELEX BL_PDF.exe
2320	INVOICE & TELEX BL_PDF.exe
2792	powershell.exe
2792	powershell.exe

description	pid	process
Token: SeDebugPrivilege	2792	powershell.exe
Token: SeDebugPrivilege	2320	INVOICE & TELEX BL_PDF.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

INVOICE & TELEX BL_PDF.exe

description	pid	process	target process
PID 1808 wrote to memory of 2792	1808	INVOICE & TELEX BL_PDF.exe	powershell.exe
PID 1808 wrote to memory of 2792	1808	INVOICE & TELEX BL_PDF.exe	powershell.exe
PID 1808 wrote to memory of 2792	1808	INVOICE & TELEX BL_PDF.exe	powershell.exe
PID 1808 wrote to memory of 2320	1808	INVOICE & TELEX BL_PDF.exe	INVOICE & TELEX BL_PDF.exe
PID 1808 wrote to memory of 2320	1808	INVOICE & TELEX BL_PDF.exe	INVOICE & TELEX BL_PDF.exe
PID 1808 wrote to memory of 2320	1808	INVOICE & TELEX BL_PDF.exe	INVOICE & TELEX BL_PDF.exe
PID 1808 wrote to memory of 2320	1808	INVOICE & TELEX BL_PDF.exe	INVOICE & TELEX BL_PDF.exe
PID 1808 wrote to memory of 2320	1808	INVOICE & TELEX BL_PDF.exe	INVOICE & TELEX BL_PDF.exe
PID 1808 wrote to memory of 2320	1808	INVOICE & TELEX BL_PDF.exe	INVOICE & TELEX BL_PDF.exe
PID 1808 wrote to memory of 2320	1808	INVOICE & TELEX BL_PDF.exe	INVOICE & TELEX BL_PDF.exe
PID 1808 wrote to memory of 2320	1808	INVOICE & TELEX BL_PDF.exe	INVOICE & TELEX BL_PDF.exe

C:\Users\Admin\AppData\Local\Temp\INVOICE & TELEX BL_PDF.exe
"C:\Users\Admin\AppData\Local\Temp\INVOICE & TELEX BL_PDF.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1808

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\INVOICE & TELEX BL_PDF.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2792

C:\Users\Admin\AppData\Local\Temp\INVOICE & TELEX BL_PDF.exe
"C:\Users\Admin\AppData\Local\Temp\INVOICE & TELEX BL_PDF.exe"
2⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2320

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Credentials in Files

3

T1081

Discovery

Query Registry

4

T1012

Virtualization/Sandbox Evasion

2

T1497

System Information Discovery

3

T1082

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Data from Local System

3

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\INVOICE & TELEX BL_PDF.exe.log
MD5
702accedbb5f4330e71e04b0adcebcab

SHA1
8758b0e8bb8fb8036fd30134015c4eb3f6113b5b

SHA256
eac8901972a0bc1e30fe8451564817c5ea116870f8483c128650a0783e48c57f

SHA512
19d4fcd7a58b65282638a7bb633fbcbe4ddb24edba81d43d333fcbbbb38b114ce64bf7a5d45516249ceca343a2d854aa3e531af2960d03d468f6264e00a34f45

Download Submit
memory/1808-115-0x0000000000C90000-0x0000000000C91000-memory.dmp

Filesize
4KB

Download
memory/1808-117-0x0000000005B70000-0x0000000005B71000-memory.dmp

Filesize
4KB

Download
memory/1808-118-0x00000000055B0000-0x00000000055B1000-memory.dmp

Filesize
4KB

Download
memory/1808-119-0x0000000005510000-0x00000000055A2000-memory.dmp

Filesize
584KB

Download
memory/1808-120-0x0000000005650000-0x0000000005651000-memory.dmp

Filesize
4KB

Download
memory/1808-121-0x0000000008AE0000-0x0000000008AE1000-memory.dmp

Filesize
4KB

Download
memory/1808-122-0x0000000005820000-0x0000000005827000-memory.dmp

Filesize
28KB

Download
memory/1808-123-0x0000000009160000-0x0000000009161000-memory.dmp

Filesize
4KB

Download
memory/1808-124-0x0000000009010000-0x0000000009078000-memory.dmp

Filesize
416KB

Download
memory/1808-125-0x0000000009080000-0x00000000090BC000-memory.dmp

Filesize
240KB

Download
memory/1808-127-0x0000000009E00000-0x0000000009E01000-memory.dmp

Filesize
4KB

Download
memory/2320-132-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2320-147-0x0000000005620000-0x0000000005B1E000-memory.dmp

Filesize
5.0MB

Download
memory/2320-162-0x0000000005AB0000-0x0000000005AB1000-memory.dmp

Filesize
4KB

Download
memory/2320-133-0x00000000004375EE-mapping.dmp

Download
memory/2792-146-0x0000000006942000-0x0000000006943000-memory.dmp

Filesize
4KB

Download
memory/2792-134-0x0000000006C50000-0x0000000006C51000-memory.dmp

Filesize
4KB

Download
memory/2792-136-0x0000000006CF0000-0x0000000006CF1000-memory.dmp

Filesize
4KB

Download
memory/2792-141-0x00000000075B0000-0x00000000075B1000-memory.dmp

Filesize
4KB

Download
memory/2792-143-0x0000000004500000-0x0000000004501000-memory.dmp

Filesize
4KB

Download
memory/2792-131-0x0000000006F80000-0x0000000006F81000-memory.dmp

Filesize
4KB

Download
memory/2792-145-0x0000000006CA0000-0x0000000006CA1000-memory.dmp

Filesize
4KB

Download
memory/2792-144-0x0000000006940000-0x0000000006941000-memory.dmp

Filesize
4KB

Download
memory/2792-126-0x0000000000000000-mapping.dmp

Download
memory/2792-148-0x0000000007BD0000-0x0000000007BD1000-memory.dmp

Filesize
4KB

Download
memory/2792-160-0x0000000006943000-0x0000000006944000-memory.dmp

Filesize
4KB

Download
memory/2792-161-0x0000000006944000-0x0000000006946000-memory.dmp

Filesize
8KB

Download
memory/2792-130-0x00000000044C0000-0x00000000044C1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads