agenttesla | 8abb63de37656286d81edf0bd23002887fe9cc3eca60973810299ff25a70c3d2

General

Target

0080900000000000004.exe
Size

508KB
MD5

697e07591d78360f5544a6d5d6f7cf65
SHA1

6462fa2d20234ebe218d43126d0b3e0d407e868c
SHA256

9af31d18ef5af8d20ed75f9cc76185d119990e2adea7748c16562359a1dc3d5d
SHA512

484e69510061cd2a6a9b7188de95c2b0c8c421f09a342ae505f671aa59f08f733fbf695c3e7af390b8357be5ff678e5472ec4755ab0f63a8c7e36806d5881948

Score

10^/10

agenttesla snakebot collection coreentity keylogger rezer0 snakebot spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.ionos.mx
Port:
587
Username:
[email protected]
Password:
lp475869

Signatures

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

CoreEntity .NET Packer 1 IoCs

A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

coreentity

Processes:

resource	yara_rule
behavioral1/memory/1980-56-0x0000000000440000-0x0000000000448000-memory.dmp	coreentity

SnakeBOT
SnakeBOT is a heavily obfuscated .NET downloader.
snakebot

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/280-63-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/280-64-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/280-65-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/280-66-0x000000000044C9EE-mapping.dmp	family_agenttesla
behavioral1/memory/280-68-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/280-70-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla

Contains SnakeBOT related strings 1 IoCs

snakebot

Processes:

resource	yara_rule
behavioral1/memory/1980-54-0x0000000000B00000-0x0000000000B88000-memory.dmp	snakebot_strings

ReZer0 packer 1 IoCs

Detects ReZer0, a packer with multiple versions used in various campaigns.

rezer0

Processes:

resource	yara_rule
behavioral1/memory/1980-57-0x0000000007010000-0x0000000007068000-memory.dmp	rezer0

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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

0080900000000000004.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	0080900000000000004.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	0080900000000000004.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	0080900000000000004.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

0080900000000000004.exe

description pid process target process

PID 1980 set thread context of 280 1980 0080900000000000004.exe 0080900000000000004.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

912 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

0080900000000000004.exe

pid process

280 0080900000000000004.exe
280 0080900000000000004.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

0080900000000000004.exe0080900000000000004.exe

description pid process

Token: SeDebugPrivilege 1980 0080900000000000004.exe
Token: SeDebugPrivilege 280 0080900000000000004.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

0080900000000000004.exe

pid process

1980 0080900000000000004.exe
1980 0080900000000000004.exe

description	pid	process	target process
PID 1980 set thread context of 280	1980	0080900000000000004.exe	0080900000000000004.exe

pid	process
912	schtasks.exe

pid	process
280	0080900000000000004.exe
280	0080900000000000004.exe

description	pid	process
Token: SeDebugPrivilege	1980	0080900000000000004.exe
Token: SeDebugPrivilege	280	0080900000000000004.exe

pid	process
1980	0080900000000000004.exe
1980	0080900000000000004.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

0080900000000000004.exe0080900000000000004.exe

description	pid	process	target process
PID 1980 wrote to memory of 912	1980	0080900000000000004.exe	schtasks.exe
PID 1980 wrote to memory of 912	1980	0080900000000000004.exe	schtasks.exe
PID 1980 wrote to memory of 912	1980	0080900000000000004.exe	schtasks.exe
PID 1980 wrote to memory of 912	1980	0080900000000000004.exe	schtasks.exe
PID 1980 wrote to memory of 280	1980	0080900000000000004.exe	0080900000000000004.exe
PID 1980 wrote to memory of 280	1980	0080900000000000004.exe	0080900000000000004.exe
PID 1980 wrote to memory of 280	1980	0080900000000000004.exe	0080900000000000004.exe
PID 1980 wrote to memory of 280	1980	0080900000000000004.exe	0080900000000000004.exe
PID 1980 wrote to memory of 280	1980	0080900000000000004.exe	0080900000000000004.exe
PID 1980 wrote to memory of 280	1980	0080900000000000004.exe	0080900000000000004.exe
PID 1980 wrote to memory of 280	1980	0080900000000000004.exe	0080900000000000004.exe
PID 1980 wrote to memory of 280	1980	0080900000000000004.exe	0080900000000000004.exe
PID 1980 wrote to memory of 280	1980	0080900000000000004.exe	0080900000000000004.exe
PID 280 wrote to memory of 2040	280	0080900000000000004.exe	netsh.exe
PID 280 wrote to memory of 2040	280	0080900000000000004.exe	netsh.exe
PID 280 wrote to memory of 2040	280	0080900000000000004.exe	netsh.exe
PID 280 wrote to memory of 2040	280	0080900000000000004.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

0080900000000000004.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	0080900000000000004.exe

outlook_win_path 1 IoCs

Processes:

0080900000000000004.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	0080900000000000004.exe

C:\Users\Admin\AppData\Local\Temp\0080900000000000004.exe
"C:\Users\Admin\AppData\Local\Temp\0080900000000000004.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1980
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\LsoUSx" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1759.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:912
- C:\Users\Admin\AppData\Local\Temp\0080900000000000004.exe
  "{path}"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  - outlook_office_path
  - outlook_win_path
  PID:280
- - C:\Windows\SysWOW64\netsh.exe
    "netsh" wlan show profile
    3⤵
    PID:2040

Network

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

Credential Access

Credentials in Files

3

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp1759.tmp

Filesize
1KB

MD5
16f6b512e76710a755bc4307f5fe51e0

SHA1
170ee7785a4eb49c41c353b761ef402ee0ce4396

SHA256
3c5400f92bca4420631169ff9199863a87903712c5619e4491295a0f1e769e4e

SHA512
fb09cbb55dafcde26d2b22dbb18fe059d3e1dc1a8c5989e0d4fa8bcc8a0c0c2469dbc3b6e7381443a39f95e98642391ae407c4df29b65b174a0c18e8695d7fcb

Download Submit
memory/280-64-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/280-66-0x000000000044C9EE-mapping.dmp

Download
memory/280-70-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/280-68-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/280-65-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/280-60-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/280-61-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/280-63-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/912-58-0x0000000000000000-mapping.dmp

Download
memory/1980-54-0x0000000000B00000-0x0000000000B88000-memory.dmp

Filesize
544KB

Download
memory/1980-55-0x00000000768D1000-0x00000000768D3000-memory.dmp

Filesize
8KB

Download
memory/1980-56-0x0000000000440000-0x0000000000448000-memory.dmp

Filesize
32KB

Download
memory/1980-57-0x0000000007010000-0x0000000007068000-memory.dmp

Filesize
352KB

Download
memory/2040-72-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads