agenttesla | c72743158ad2d3efab41bfc3c76e48d98139a53bb3786379149316b6cfb42f87

General

Target

SHIPPING ADV#202109.exe
Size

831KB
MD5

db00ed0da0d3e5a11fd18a042c5c0c76
SHA1

6de345db616385f220843d3c566710aa11a64681
SHA256

6674e9af3a42239eaa8455873f2ee7deb83add5bb32b3f40619d9efee701527b
SHA512

920aaf4919aeda252d7516e6c6e5c18af984aa3560fe62d34bb3bf84770b97f4ddfc17ea9829410d6e7faa91d8097408840fa33add292143dda734b9343f36ae

Score

10^/10

agenttesla evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.bsia.co.in
Port:
587
Username:
yogesh@bsia.co.in
Password:
21mbsia@)@!Y

Signatures

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

Contains code to disable Windows Defender 1 IoCs

A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

Processes:

resource	yara_rule
behavioral2/memory/592-136-0x00000000057A0000-0x0000000005C9E000-memory.dmp	disable_win_def

AgentTesla Payload 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/592-129-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral2/memory/592-130-0x00000000004374CE-mapping.dmp	family_agenttesla
behavioral2/memory/592-136-0x00000000057A0000-0x0000000005C9E000-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:

SHIPPING ADV#202109.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	SHIPPING ADV#202109.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	SHIPPING ADV#202109.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:

SHIPPING ADV#202109.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	SHIPPING ADV#202109.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum\0	SHIPPING ADV#202109.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

SHIPPING ADV#202109.exe

description pid process target process

PID 4008 set thread context of 592 4008 SHIPPING ADV#202109.exe SHIPPING ADV#202109.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

2864 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

SHIPPING ADV#202109.exe

pid process

592 SHIPPING ADV#202109.exe
592 SHIPPING ADV#202109.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

SHIPPING ADV#202109.exe

description pid process

Token: SeDebugPrivilege 592 SHIPPING ADV#202109.exe

description	pid	process	target process
PID 4008 set thread context of 592	4008	SHIPPING ADV#202109.exe	SHIPPING ADV#202109.exe

pid	process
2864	schtasks.exe

pid	process
592	SHIPPING ADV#202109.exe
592	SHIPPING ADV#202109.exe

description	pid	process
Token: SeDebugPrivilege	592	SHIPPING ADV#202109.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

SHIPPING ADV#202109.exe

description	pid	process	target process
PID 4008 wrote to memory of 2864	4008	SHIPPING ADV#202109.exe	schtasks.exe
PID 4008 wrote to memory of 2864	4008	SHIPPING ADV#202109.exe	schtasks.exe
PID 4008 wrote to memory of 2864	4008	SHIPPING ADV#202109.exe	schtasks.exe
PID 4008 wrote to memory of 592	4008	SHIPPING ADV#202109.exe	SHIPPING ADV#202109.exe
PID 4008 wrote to memory of 592	4008	SHIPPING ADV#202109.exe	SHIPPING ADV#202109.exe
PID 4008 wrote to memory of 592	4008	SHIPPING ADV#202109.exe	SHIPPING ADV#202109.exe
PID 4008 wrote to memory of 592	4008	SHIPPING ADV#202109.exe	SHIPPING ADV#202109.exe
PID 4008 wrote to memory of 592	4008	SHIPPING ADV#202109.exe	SHIPPING ADV#202109.exe
PID 4008 wrote to memory of 592	4008	SHIPPING ADV#202109.exe	SHIPPING ADV#202109.exe
PID 4008 wrote to memory of 592	4008	SHIPPING ADV#202109.exe	SHIPPING ADV#202109.exe
PID 4008 wrote to memory of 592	4008	SHIPPING ADV#202109.exe	SHIPPING ADV#202109.exe

C:\Users\Admin\AppData\Local\Temp\SHIPPING ADV#202109.exe
"C:\Users\Admin\AppData\Local\Temp\SHIPPING ADV#202109.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4008

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\lipZGzghwiAyb" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8CE4.tmp"
2⤵
- Creates scheduled task(s)
PID:2864

C:\Users\Admin\AppData\Local\Temp\SHIPPING ADV#202109.exe
"{path}"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:592

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

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

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\SHIPPING ADV#202109.exe.log
MD5
5ce36f0c4d9568839c224ffaa10d5441

SHA1
69c0cdded0b415091641c3fbf64b7fbd7e285e47

SHA256
c93c5a9fdaa44aeb7f25c89abed40a1ca6432bf3ea840e2820388bef68cd116a

SHA512
a6ef350d4f36f35b42ce0b8a4df83f17fb0a4f66dcfa32617b22e642168291bede3b612969e0eec293d7ca1ba0aef7a05c31823bd41821e0880b609f280b0b83

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp8CE4.tmp
MD5
52dcefb3a9315a7d2781e2a4c2b6522b

SHA1
4466a1b39627dfb513fdf8c5f55ec7419c382114

SHA256
073e4aedd2dc9e1b03353c2a36b11c686edc9b4e9411def4abb13427eb6a1602

SHA512
c2b262c227c9e6de7fed9bc9cfc350e2c0262a374849688d84fefe581614625f3dff03fc9ea3f3f01410480914cc510a84c5836ef034352c2e15210d6f4c8b8f

Download Submit
memory/592-137-0x00000000063A0000-0x00000000063A1000-memory.dmp

Filesize
4KB

Download
memory/592-136-0x00000000057A0000-0x0000000005C9E000-memory.dmp

Filesize
5.0MB

Download
memory/592-130-0x00000000004374CE-mapping.dmp

Download
memory/592-129-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2864-127-0x0000000000000000-mapping.dmp

Download
memory/4008-120-0x0000000004AE0000-0x0000000004AE1000-memory.dmp

Filesize
4KB

Download
memory/4008-124-0x00000000082D0000-0x000000000834E000-memory.dmp

Filesize
504KB

Download
memory/4008-125-0x0000000008350000-0x000000000838A000-memory.dmp

Filesize
232KB

Download
memory/4008-126-0x0000000008430000-0x0000000008431000-memory.dmp

Filesize
4KB

Download
memory/4008-123-0x0000000000C70000-0x0000000000C7E000-memory.dmp

Filesize
56KB

Download
memory/4008-122-0x0000000004A70000-0x0000000004B0C000-memory.dmp

Filesize
624KB

Download
memory/4008-121-0x0000000004DD0000-0x0000000004DD1000-memory.dmp

Filesize
4KB

Download
memory/4008-115-0x0000000000200000-0x0000000000201000-memory.dmp

Filesize
4KB

Download
memory/4008-119-0x0000000004C60000-0x0000000004C61000-memory.dmp

Filesize
4KB

Download
memory/4008-118-0x00000000050C0000-0x00000000050C1000-memory.dmp

Filesize
4KB

Download
memory/4008-117-0x0000000004B10000-0x0000000004B11000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads