agenttesla | c3a599ab8360b1bd31e3964b54736ff9bf22321ce3676a0b9b7d053b5bda6c7e

General

Target

DHL_Doc003839803.exe
Size

744KB
MD5

ea88f31d6cc55d8f7a9260245988dab6
SHA1

9e725bae655c21772c10f2d64a5831b98f7d93dd
SHA256

33f77b1bca36469dd734af67950223a7b1babd62a25cb5f0848025f2a68b9447
SHA512

5952c4540b1ae5f2db48aaae404e89fb477d233d9b67458dd5cecc2edfed711509d2e968e6af2dbb3bd2099c10a4556f7612fc0055df798e99f9850796a832ad

Score

10^/10

agenttesla collection coreentity keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.zoho.eu
Port:
587
Username:
admin1@haveusearotech.com
Password:
admin1ABC223@##!con

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/892-56-0x00000000003B0000-0x00000000003B8000-memory.dmp	coreentity

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2036-63-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/2036-64-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/2036-65-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/2036-66-0x000000000044CCFE-mapping.dmp	family_agenttesla
behavioral1/memory/2036-68-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/2036-70-0x0000000000400000-0x0000000000452000-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/892-57-0x0000000000600000-0x0000000000658000-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:

DHL_Doc003839803.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	DHL_Doc003839803.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	DHL_Doc003839803.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	DHL_Doc003839803.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

DHL_Doc003839803.exe

description pid process target process

PID 892 set thread context of 2036 892 DHL_Doc003839803.exe DHL_Doc003839803.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

1068 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

DHL_Doc003839803.exeDHL_Doc003839803.exe

pid process

892 DHL_Doc003839803.exe
2036 DHL_Doc003839803.exe
2036 DHL_Doc003839803.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

DHL_Doc003839803.exeDHL_Doc003839803.exe

description pid process

Token: SeDebugPrivilege 892 DHL_Doc003839803.exe
Token: SeDebugPrivilege 2036 DHL_Doc003839803.exe

description	pid	process	target process
PID 892 set thread context of 2036	892	DHL_Doc003839803.exe	DHL_Doc003839803.exe

pid	process
1068	schtasks.exe

pid	process
892	DHL_Doc003839803.exe
2036	DHL_Doc003839803.exe
2036	DHL_Doc003839803.exe

description	pid	process
Token: SeDebugPrivilege	892	DHL_Doc003839803.exe
Token: SeDebugPrivilege	2036	DHL_Doc003839803.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

DHL_Doc003839803.exeDHL_Doc003839803.exe

description	pid	process	target process
PID 892 wrote to memory of 1068	892	DHL_Doc003839803.exe	schtasks.exe
PID 892 wrote to memory of 1068	892	DHL_Doc003839803.exe	schtasks.exe
PID 892 wrote to memory of 1068	892	DHL_Doc003839803.exe	schtasks.exe
PID 892 wrote to memory of 1068	892	DHL_Doc003839803.exe	schtasks.exe
PID 892 wrote to memory of 2036	892	DHL_Doc003839803.exe	DHL_Doc003839803.exe
PID 892 wrote to memory of 2036	892	DHL_Doc003839803.exe	DHL_Doc003839803.exe
PID 892 wrote to memory of 2036	892	DHL_Doc003839803.exe	DHL_Doc003839803.exe
PID 892 wrote to memory of 2036	892	DHL_Doc003839803.exe	DHL_Doc003839803.exe
PID 892 wrote to memory of 2036	892	DHL_Doc003839803.exe	DHL_Doc003839803.exe
PID 892 wrote to memory of 2036	892	DHL_Doc003839803.exe	DHL_Doc003839803.exe
PID 892 wrote to memory of 2036	892	DHL_Doc003839803.exe	DHL_Doc003839803.exe
PID 892 wrote to memory of 2036	892	DHL_Doc003839803.exe	DHL_Doc003839803.exe
PID 892 wrote to memory of 2036	892	DHL_Doc003839803.exe	DHL_Doc003839803.exe
PID 2036 wrote to memory of 996	2036	DHL_Doc003839803.exe	netsh.exe
PID 2036 wrote to memory of 996	2036	DHL_Doc003839803.exe	netsh.exe
PID 2036 wrote to memory of 996	2036	DHL_Doc003839803.exe	netsh.exe
PID 2036 wrote to memory of 996	2036	DHL_Doc003839803.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

DHL_Doc003839803.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	DHL_Doc003839803.exe

outlook_win_path 1 IoCs

Processes:

DHL_Doc003839803.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	DHL_Doc003839803.exe

C:\Users\Admin\AppData\Local\Temp\DHL_Doc003839803.exe
"C:\Users\Admin\AppData\Local\Temp\DHL_Doc003839803.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:892

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\wWTxgR" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7CEE.tmp"
2⤵
- Creates scheduled task(s)
PID:1068

C:\Users\Admin\AppData\Local\Temp\DHL_Doc003839803.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:2036

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:996

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

Credential Access

Credentials in Files

3

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp7CEE.tmp
Filesize
1KB

MD5
f1600b7bb9abcc71f622ac260104cb93

SHA1
09738f4172fcfb2af4ad81a8e3b8cb0c491059c3

SHA256
c0dc5a5b26eaeaaa11facfcce7105f6354bd005f966f0371fe9d8c16e4f00259

SHA512
c8651f3a240c978ea058fd38c03f869974c418bffd6502df20347a9018670d4aeec86d35dca1ddc41e2fdf595f583437ada618f28ce349043ad40a04f5462f51

Download Submit
memory/892-55-0x00000000763B1000-0x00000000763B3000-memory.dmp

Filesize
8KB

Download
memory/892-56-0x00000000003B0000-0x00000000003B8000-memory.dmp

Filesize
32KB

Download
memory/892-57-0x0000000000600000-0x0000000000658000-memory.dmp

Filesize
352KB

Download
memory/892-54-0x0000000000980000-0x0000000000A3E000-memory.dmp

Filesize
760KB

Download
memory/996-72-0x0000000000000000-mapping.dmp

Download
memory/1068-58-0x0000000000000000-mapping.dmp

Download
memory/2036-60-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/2036-63-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/2036-64-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/2036-65-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/2036-66-0x000000000044CCFE-mapping.dmp

Download
memory/2036-68-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/2036-70-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/2036-61-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads