agenttesla | 1ee09b56eb363f46b95737856b82a8fd297c1e488042dd6c1f813cdb616a894e

General

Target

NPK 202020.exe
Size

816KB
MD5

94c64da42cec451a2bd9c6e30d366fa8
SHA1

ae5ad76d977bedfaa76632fa32d5678c212daa96
SHA256

40b64f01b9da5a5fdafaeae7226eb911ec29c6ecddd24aae32465f0c3b97fac5
SHA512

97754440f8ad88d4bc02e57f921461a62176825f615cffbc6ffd35c29404e4301a142e4e4399c835c370e47563c240205ca8985a8f1ef6de1df43dea19dcf86a

Score

10^/10

agenttesla collection coreentity keylogger persistence rezer0 spyware stealer trojan

Malware Config

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/684-56-0x0000000000380000-0x0000000000388000-memory.dmp	coreentity

AgentTesla Payload 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/684-60-0x00000000020C0000-0x000000000210E000-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/684-57-0x0000000001E30000-0x0000000001E86000-memory.dmp	rezer0

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:

NPK 202020.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	NPK 202020.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	NPK 202020.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	NPK 202020.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

NPK 202020.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Update = "C:\\Users\\Admin\\AppData\\Roaming\\Windows Update\\Windows Update.exe"	NPK 202020.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

1540 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

NPK 202020.exe

pid process

684 NPK 202020.exe
684 NPK 202020.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

NPK 202020.exe

description pid process

Token: SeDebugPrivilege 684 NPK 202020.exe

pid	process
1540	schtasks.exe

pid	process
684	NPK 202020.exe
684	NPK 202020.exe

description	pid	process
Token: SeDebugPrivilege	684	NPK 202020.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

NPK 202020.exe

description	pid	process	target process
PID 684 wrote to memory of 1540	684	NPK 202020.exe	schtasks.exe
PID 684 wrote to memory of 1540	684	NPK 202020.exe	schtasks.exe
PID 684 wrote to memory of 1540	684	NPK 202020.exe	schtasks.exe
PID 684 wrote to memory of 1540	684	NPK 202020.exe	schtasks.exe

outlook_office_path 1 IoCs

Processes:

NPK 202020.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	NPK 202020.exe

outlook_win_path 1 IoCs

Processes:

NPK 202020.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	NPK 202020.exe

C:\Users\Admin\AppData\Local\Temp\NPK 202020.exe
"C:\Users\Admin\AppData\Local\Temp\NPK 202020.exe"
1⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:684

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YHtBDZyNICpYf" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1A45.tmp"
2⤵
- Creates scheduled task(s)
PID:1540

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

1

T1060

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

2

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp1A45.tmp
Filesize
1KB

MD5
149c536cfb17a9f9a46bc43cf356d389

SHA1
8847c1ce17590b599138152a0f343c82f7a90f7b

SHA256
9d0759530472929db93279e7ee7fa80ad6089d082c88ec4644e3003198f1d7a5

SHA512
79205c8099a7177edf54f38a9ccde6c0a6cd7ecb8c9ef8942d494b6aaecf798dba1c873d8ab7556cb832fa44a4528cfd2a1375da76f7df1d81b24e9145441375

Download Submit
memory/684-54-0x00000000104C0000-0x0000000010590000-memory.dmp

Filesize
832KB

Download
memory/684-55-0x00000000753B1000-0x00000000753B3000-memory.dmp

Filesize
8KB

Download
memory/684-56-0x0000000000380000-0x0000000000388000-memory.dmp

Filesize
32KB

Download
memory/684-57-0x0000000001E30000-0x0000000001E86000-memory.dmp

Filesize
344KB

Download
memory/684-60-0x00000000020C0000-0x000000000210E000-memory.dmp

Filesize
312KB

Download
memory/1540-58-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads