agenttesla | f8f829521ff957ce0b2343426fa96d6f7252ca162f3c264702bccf5b624dc52c

General

Target

RFQ - L2004220045.exe
Size

445KB
MD5

6fddc9be9e33acc082b0108f29707df2
SHA1

e929b95e17f11d6fdc9ba75f810d8ea4d50d1acc
SHA256

e83fe0f20ca6602c7842bd619698e141d7a0f92c4e625b42559334ccab74a148
SHA512

2434d3a3f47962c87552e63056879422ff1670fd4d176e0c4677e945dcacc3587309deb5464864013ef8251bf415be208cc83985baf2cb0daffd37f6b131eb45

Score

10^/10

agenttesla collection coreentity keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.sacaplus.com
Port:
587
Username:
shafiq@sacaplus.com
Password:
786sas12

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/1084-56-0x0000000000790000-0x0000000000798000-memory.dmp	coreentity

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1380-63-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1380-64-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1380-65-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1380-66-0x000000000044C86E-mapping.dmp	family_agenttesla
behavioral1/memory/1380-68-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1380-70-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla

CoreCCC Packer 1 IoCs

Detects CoreCCC packer used to load .NET malware.

Processes:

resource	yara_rule
behavioral1/memory/1084-54-0x0000000000AE0000-0x0000000000B56000-memory.dmp	coreccc

ReZer0 packer 1 IoCs

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

rezer0

Processes:

resource	yara_rule
behavioral1/memory/1084-57-0x0000000005420000-0x0000000005478000-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:

RFQ - L2004220045.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFQ - L2004220045.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFQ - L2004220045.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFQ - L2004220045.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

RFQ - L2004220045.exe

description pid process target process

PID 1084 set thread context of 1380 1084 RFQ - L2004220045.exe RFQ - L2004220045.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

1412 schtasks.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

RFQ - L2004220045.exeRFQ - L2004220045.exe

pid process

1084 RFQ - L2004220045.exe
1084 RFQ - L2004220045.exe
1380 RFQ - L2004220045.exe
1380 RFQ - L2004220045.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

RFQ - L2004220045.exeRFQ - L2004220045.exe

description pid process

Token: SeDebugPrivilege 1084 RFQ - L2004220045.exe
Token: SeDebugPrivilege 1380 RFQ - L2004220045.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

RFQ - L2004220045.exe

pid process

1380 RFQ - L2004220045.exe

description	pid	process	target process
PID 1084 set thread context of 1380	1084	RFQ - L2004220045.exe	RFQ - L2004220045.exe

pid	process
1412	schtasks.exe

pid	process
1084	RFQ - L2004220045.exe
1084	RFQ - L2004220045.exe
1380	RFQ - L2004220045.exe
1380	RFQ - L2004220045.exe

description	pid	process
Token: SeDebugPrivilege	1084	RFQ - L2004220045.exe
Token: SeDebugPrivilege	1380	RFQ - L2004220045.exe

pid	process
1380	RFQ - L2004220045.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

RFQ - L2004220045.exeRFQ - L2004220045.exe

description	pid	process	target process
PID 1084 wrote to memory of 1412	1084	RFQ - L2004220045.exe	schtasks.exe
PID 1084 wrote to memory of 1412	1084	RFQ - L2004220045.exe	schtasks.exe
PID 1084 wrote to memory of 1412	1084	RFQ - L2004220045.exe	schtasks.exe
PID 1084 wrote to memory of 1412	1084	RFQ - L2004220045.exe	schtasks.exe
PID 1084 wrote to memory of 1380	1084	RFQ - L2004220045.exe	RFQ - L2004220045.exe
PID 1084 wrote to memory of 1380	1084	RFQ - L2004220045.exe	RFQ - L2004220045.exe
PID 1084 wrote to memory of 1380	1084	RFQ - L2004220045.exe	RFQ - L2004220045.exe
PID 1084 wrote to memory of 1380	1084	RFQ - L2004220045.exe	RFQ - L2004220045.exe
PID 1084 wrote to memory of 1380	1084	RFQ - L2004220045.exe	RFQ - L2004220045.exe
PID 1084 wrote to memory of 1380	1084	RFQ - L2004220045.exe	RFQ - L2004220045.exe
PID 1084 wrote to memory of 1380	1084	RFQ - L2004220045.exe	RFQ - L2004220045.exe
PID 1084 wrote to memory of 1380	1084	RFQ - L2004220045.exe	RFQ - L2004220045.exe
PID 1084 wrote to memory of 1380	1084	RFQ - L2004220045.exe	RFQ - L2004220045.exe
PID 1380 wrote to memory of 1628	1380	RFQ - L2004220045.exe	netsh.exe
PID 1380 wrote to memory of 1628	1380	RFQ - L2004220045.exe	netsh.exe
PID 1380 wrote to memory of 1628	1380	RFQ - L2004220045.exe	netsh.exe
PID 1380 wrote to memory of 1628	1380	RFQ - L2004220045.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

RFQ - L2004220045.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFQ - L2004220045.exe

outlook_win_path 1 IoCs

Processes:

RFQ - L2004220045.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFQ - L2004220045.exe

C:\Users\Admin\AppData\Local\Temp\RFQ - L2004220045.exe
"C:\Users\Admin\AppData\Local\Temp\RFQ - L2004220045.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1084

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\kNDnldw" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6F38.tmp"
2⤵
- Creates scheduled task(s)
PID:1412

C:\Users\Admin\AppData\Local\Temp\RFQ - L2004220045.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:1380

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:1628

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\tmp6F38.tmp
Filesize
1KB

MD5
7638138d7a9798cb0a978613f5c0c1f2

SHA1
aab1987359fa7b35a9570bb94376ddee716c3c03

SHA256
cf2038246c35a55062176bb09213a0548684061d7100c1adde81ec61c904cd63

SHA512
f469749e6fb3e9c5cd823367276f1a0c74adac32e12ad8b75309cb0a90a6a09f33dcacd65285fceee3158ada20b9de3ae9df44937499add14f9df75907c0c30f

Download Submit
memory/1084-55-0x0000000075CF1000-0x0000000075CF3000-memory.dmp

Filesize
8KB

Download
memory/1084-56-0x0000000000790000-0x0000000000798000-memory.dmp

Filesize
32KB

Download
memory/1084-57-0x0000000005420000-0x0000000005478000-memory.dmp

Filesize
352KB

Download
memory/1084-54-0x0000000000AE0000-0x0000000000B56000-memory.dmp

Filesize
472KB

Download
memory/1380-60-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1380-61-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1380-63-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1380-64-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1380-65-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1380-66-0x000000000044C86E-mapping.dmp

Download
memory/1380-68-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1380-70-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1412-58-0x0000000000000000-mapping.dmp

Download
memory/1628-72-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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