agenttesla | 4b160b1fa8f422e7618c6c2fe3898cdf9e20379df15800c1f838a83f0469b012

General

Target

Product_vershold_offersheet__sample_v1.exe
Size

622KB
MD5

5b4672f9b54a613f44df770c8a191cb7
SHA1

02702effbd4d1860aab85280a6515908cd14e759
SHA256

6a91ee06aa043203369fabb320b0efdc3dcee2ccd476db6da5ecc6cf473dbba2
SHA512

0c02ed2081bd6652a8764826a9bd82c6de168b877709f4fcc4463ad1665fd82cfe51aa06e16bdfb05e3f2655f1481a43acd4dc6e7fae25059eb2f5f9e77f6255

Score

10^/10

agenttesla collection coreentity keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.almushrefcoop.com
Port:
587
Username:
zainab@almushrefcoop.com
Password:
zainab123

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/972-56-0x00000000005D0000-0x00000000005D8000-memory.dmp	coreentity

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/896-63-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/896-64-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/896-65-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/896-66-0x000000000044C63E-mapping.dmp	family_agenttesla
behavioral1/memory/896-68-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/896-70-0x0000000000400000-0x0000000000452000-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/972-57-0x0000000004420000-0x0000000004478000-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:

Product_vershold_offersheet__sample_v1.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	Product_vershold_offersheet__sample_v1.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Product_vershold_offersheet__sample_v1.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Product_vershold_offersheet__sample_v1.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Product_vershold_offersheet__sample_v1.exe

description	pid	process	target process
PID 972 set thread context of 896	972	Product_vershold_offersheet__sample_v1.exe	Product_vershold_offersheet__sample_v1.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

1188 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

Product_vershold_offersheet__sample_v1.exeProduct_vershold_offersheet__sample_v1.exe

pid process

972 Product_vershold_offersheet__sample_v1.exe
896 Product_vershold_offersheet__sample_v1.exe
896 Product_vershold_offersheet__sample_v1.exe

pid	process
1188	schtasks.exe

pid	process
972	Product_vershold_offersheet__sample_v1.exe
896	Product_vershold_offersheet__sample_v1.exe
896	Product_vershold_offersheet__sample_v1.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Product_vershold_offersheet__sample_v1.exeProduct_vershold_offersheet__sample_v1.exe

description	pid	process
Token: SeDebugPrivilege	972	Product_vershold_offersheet__sample_v1.exe
Token: SeDebugPrivilege	896	Product_vershold_offersheet__sample_v1.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

Product_vershold_offersheet__sample_v1.exeProduct_vershold_offersheet__sample_v1.exe

description	pid	process	target process
PID 972 wrote to memory of 1188	972	Product_vershold_offersheet__sample_v1.exe	schtasks.exe
PID 972 wrote to memory of 1188	972	Product_vershold_offersheet__sample_v1.exe	schtasks.exe
PID 972 wrote to memory of 1188	972	Product_vershold_offersheet__sample_v1.exe	schtasks.exe
PID 972 wrote to memory of 1188	972	Product_vershold_offersheet__sample_v1.exe	schtasks.exe
PID 972 wrote to memory of 896	972	Product_vershold_offersheet__sample_v1.exe	Product_vershold_offersheet__sample_v1.exe
PID 972 wrote to memory of 896	972	Product_vershold_offersheet__sample_v1.exe	Product_vershold_offersheet__sample_v1.exe
PID 972 wrote to memory of 896	972	Product_vershold_offersheet__sample_v1.exe	Product_vershold_offersheet__sample_v1.exe
PID 972 wrote to memory of 896	972	Product_vershold_offersheet__sample_v1.exe	Product_vershold_offersheet__sample_v1.exe
PID 972 wrote to memory of 896	972	Product_vershold_offersheet__sample_v1.exe	Product_vershold_offersheet__sample_v1.exe
PID 972 wrote to memory of 896	972	Product_vershold_offersheet__sample_v1.exe	Product_vershold_offersheet__sample_v1.exe
PID 972 wrote to memory of 896	972	Product_vershold_offersheet__sample_v1.exe	Product_vershold_offersheet__sample_v1.exe
PID 972 wrote to memory of 896	972	Product_vershold_offersheet__sample_v1.exe	Product_vershold_offersheet__sample_v1.exe
PID 972 wrote to memory of 896	972	Product_vershold_offersheet__sample_v1.exe	Product_vershold_offersheet__sample_v1.exe
PID 896 wrote to memory of 1948	896	Product_vershold_offersheet__sample_v1.exe	netsh.exe
PID 896 wrote to memory of 1948	896	Product_vershold_offersheet__sample_v1.exe	netsh.exe
PID 896 wrote to memory of 1948	896	Product_vershold_offersheet__sample_v1.exe	netsh.exe
PID 896 wrote to memory of 1948	896	Product_vershold_offersheet__sample_v1.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

Product_vershold_offersheet__sample_v1.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	Product_vershold_offersheet__sample_v1.exe

outlook_win_path 1 IoCs

Processes:

Product_vershold_offersheet__sample_v1.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	Product_vershold_offersheet__sample_v1.exe

C:\Users\Admin\AppData\Local\Temp\Product_vershold_offersheet__sample_v1.exe
"C:\Users\Admin\AppData\Local\Temp\Product_vershold_offersheet__sample_v1.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:972

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ZsEAarQUgrd" /XML "C:\Users\Admin\AppData\Local\Temp\tmp65C6.tmp"
2⤵
- Creates scheduled task(s)
PID:1188

C:\Users\Admin\AppData\Local\Temp\Product_vershold_offersheet__sample_v1.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:896

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:1948

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\tmp65C6.tmp
Filesize
1KB

MD5
12f0eb11ee645da2a34a7d5ae303c0eb

SHA1
50c16f0c245c0de5a51fa189d76460854ac30791

SHA256
7e98894d3f6f57ef1c2afeae3427d64e757ba0c5c3a7123c56a94aeae9540269

SHA512
1d60e1a5b5f5e4dc7f4ca507ed4fbbe986e857a2de15be772cfe28298216b9db27e922b7804f77f1fc4501c0edbd8341933f4e56ebf912d40a0c45a4cd5cd958

Download Submit
memory/896-64-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/896-66-0x000000000044C63E-mapping.dmp

Download
memory/896-70-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/896-68-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/896-65-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/896-60-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/896-61-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/896-63-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/972-54-0x0000000000810000-0x00000000008B0000-memory.dmp

Filesize
640KB

Download
memory/972-55-0x00000000753B1000-0x00000000753B3000-memory.dmp

Filesize
8KB

Download
memory/972-56-0x00000000005D0000-0x00000000005D8000-memory.dmp

Filesize
32KB

Download
memory/972-57-0x0000000004420000-0x0000000004478000-memory.dmp

Filesize
352KB

Download
memory/1188-58-0x0000000000000000-mapping.dmp

Download
memory/1948-72-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads