agenttesla | 13001d8e9316592a0ba319cd3289b2210ede64338db27fba6ad7f97a0d747d01

General

Target

Invoice_UD345KNG.exe
Size

457KB
MD5

cb3d05cce5867b81f644e23f1e73229c
SHA1

b715fd4259a371330c3e77c7af224b360b70fd5f
SHA256

6599a4bdbadcb94a61e747a55454ed5ec2938122daece5255de039aa3820c5b5
SHA512

b8ca74e694ef3174c95aad9e070225f0a60e5c3ca82168ca39546500baeb601c44229b4be3074733393cc53f8e996cf9c08ec3378071d87205a7ab3174dc4773

Score

10^/10

agenttesla collection coreentity keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
vps.dochem.pw
Port:
587
Username:
[email protected]
Password:
bAy64WwH

Signatures

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

CoreEntity .NET Packer 2 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/108-54-0x0000000000110000-0x0000000000188000-memory.dmp	coreentity
behavioral1/memory/108-56-0x0000000000310000-0x0000000000318000-memory.dmp	coreentity

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/632-63-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/632-64-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/632-65-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/632-66-0x000000000044B82E-mapping.dmp	family_agenttesla
behavioral1/memory/632-68-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/632-70-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla

ReZer0 packer 1 IoCs

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

rezer0

Processes:

resource	yara_rule
behavioral1/memory/108-57-0x0000000004DE0000-0x0000000004E38000-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:

Invoice_UD345KNG.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Invoice_UD345KNG.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Invoice_UD345KNG.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Invoice_UD345KNG.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Invoice_UD345KNG.exe

description pid process target process

PID 108 set thread context of 632 108 Invoice_UD345KNG.exe Invoice_UD345KNG.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

1828 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

Invoice_UD345KNG.exe

pid process

632 Invoice_UD345KNG.exe
632 Invoice_UD345KNG.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Invoice_UD345KNG.exe

description pid process

Token: SeDebugPrivilege 632 Invoice_UD345KNG.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Invoice_UD345KNG.exe

pid process

632 Invoice_UD345KNG.exe

description	pid	process	target process
PID 108 set thread context of 632	108	Invoice_UD345KNG.exe	Invoice_UD345KNG.exe

pid	process
1828	schtasks.exe

pid	process
632	Invoice_UD345KNG.exe
632	Invoice_UD345KNG.exe

description	pid	process
Token: SeDebugPrivilege	632	Invoice_UD345KNG.exe

pid	process
632	Invoice_UD345KNG.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

Invoice_UD345KNG.exe

description	pid	process	target process
PID 108 wrote to memory of 1828	108	Invoice_UD345KNG.exe	schtasks.exe
PID 108 wrote to memory of 1828	108	Invoice_UD345KNG.exe	schtasks.exe
PID 108 wrote to memory of 1828	108	Invoice_UD345KNG.exe	schtasks.exe
PID 108 wrote to memory of 1828	108	Invoice_UD345KNG.exe	schtasks.exe
PID 108 wrote to memory of 632	108	Invoice_UD345KNG.exe	Invoice_UD345KNG.exe
PID 108 wrote to memory of 632	108	Invoice_UD345KNG.exe	Invoice_UD345KNG.exe
PID 108 wrote to memory of 632	108	Invoice_UD345KNG.exe	Invoice_UD345KNG.exe
PID 108 wrote to memory of 632	108	Invoice_UD345KNG.exe	Invoice_UD345KNG.exe
PID 108 wrote to memory of 632	108	Invoice_UD345KNG.exe	Invoice_UD345KNG.exe
PID 108 wrote to memory of 632	108	Invoice_UD345KNG.exe	Invoice_UD345KNG.exe
PID 108 wrote to memory of 632	108	Invoice_UD345KNG.exe	Invoice_UD345KNG.exe
PID 108 wrote to memory of 632	108	Invoice_UD345KNG.exe	Invoice_UD345KNG.exe
PID 108 wrote to memory of 632	108	Invoice_UD345KNG.exe	Invoice_UD345KNG.exe

outlook_office_path 1 IoCs

Processes:

Invoice_UD345KNG.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Invoice_UD345KNG.exe

outlook_win_path 1 IoCs

Processes:

Invoice_UD345KNG.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Invoice_UD345KNG.exe

C:\Users\Admin\AppData\Local\Temp\Invoice_UD345KNG.exe
"C:\Users\Admin\AppData\Local\Temp\Invoice_UD345KNG.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:108

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\KkRmKmfX" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC2D3.tmp"
2⤵
- Creates scheduled task(s)
PID:1828

C:\Users\Admin\AppData\Local\Temp\Invoice_UD345KNG.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
PID:632

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpC2D3.tmp
Filesize
1KB

MD5
c9824c266b38025f3cd51d348e57bc79

SHA1
bf26097b7f3fd8393208c5f57a1843c727dd7536

SHA256
376d2e9fb94b448866c17338b87831eca80a61a8715cc4968a829b62e3e30ff7

SHA512
9b1f763dfb292a6f360954b898d60282bd30ce40a0a6a747130d09de0d6627febc583dd28f8096a12beb397b64d5842aab016450fd254fd1b8ca032d77548d8c

Download Submit
memory/108-55-0x0000000075A61000-0x0000000075A63000-memory.dmp

Filesize
8KB

Download
memory/108-56-0x0000000000310000-0x0000000000318000-memory.dmp

Filesize
32KB

Download
memory/108-57-0x0000000004DE0000-0x0000000004E38000-memory.dmp

Filesize
352KB

Download
memory/108-54-0x0000000000110000-0x0000000000188000-memory.dmp

Filesize
480KB

Download
memory/632-60-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/632-61-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/632-63-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/632-64-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/632-65-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/632-66-0x000000000044B82E-mapping.dmp

Download
memory/632-68-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/632-70-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1828-58-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads