agenttesla | e3fa6e232d27ca9d98148c4d388cc8736dfad4343b217e5e2f0144479a359a40

General

Target

DOCUMENTS.exe
Size

4.9MB
MD5

383e9e8b71478d0e35d389500561cb5e
SHA1

cef0993f3a26e160edfd04ab30035904d4a4b738
SHA256

e3fa6e232d27ca9d98148c4d388cc8736dfad4343b217e5e2f0144479a359a40
SHA512

ed030dc4c15648725cedfd0c9d56658724eb4e96cef2050d02682b8dd27c7e869d3daf63082c259838e2bf2cf74b027ea847cd663f8566ac46556b350e4bd5cb
SSDEEP

24576:2u4nAO8262Tus0cWEwDr+II25P++O4bV4jMm1YGxKp5mjB4HYDABx2S8kAx8:

Score

10^/10

agenttesla purecrypter collection downloader keylogger loader persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: ftp
Host:
ftp://files.000webhost.com
Port:
21
Username:
zincox
Password:
computer@1010

Signatures

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

Detect PureCrypter injector 1 IoCs

loader

resource	yara_rule
behavioral1/memory/1144-55-0x00000000063E0000-0x000000000665A000-memory.dmp	family_purecrypter

PureCrypter
PureCrypter is a .NET malware loader first seen in early 2021.
loader downloader purecrypter
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

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	DOCUMENTS.exe
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	DOCUMENTS.exe
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	DOCUMENTS.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\Clbmxcarzb = "\"C:\\Users\\Admin\\AppData\\Roaming\\Atmmx\\Clbmxcarzb.exe\""	DOCUMENTS.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1144 set thread context of 608	1144	DOCUMENTS.exe	29

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
944	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1144	DOCUMENTS.exe
Token: SeDebugPrivilege	944	powershell.exe
Token: SeDebugPrivilege	608	DOCUMENTS.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1144 wrote to memory of 944	1144	DOCUMENTS.exe	27
PID 1144 wrote to memory of 944	1144	DOCUMENTS.exe	27
PID 1144 wrote to memory of 944	1144	DOCUMENTS.exe	27
PID 1144 wrote to memory of 944	1144	DOCUMENTS.exe	27
PID 1144 wrote to memory of 608	1144	DOCUMENTS.exe	29
PID 1144 wrote to memory of 608	1144	DOCUMENTS.exe	29
PID 1144 wrote to memory of 608	1144	DOCUMENTS.exe	29
PID 1144 wrote to memory of 608	1144	DOCUMENTS.exe	29
PID 1144 wrote to memory of 608	1144	DOCUMENTS.exe	29
PID 1144 wrote to memory of 608	1144	DOCUMENTS.exe	29
PID 1144 wrote to memory of 608	1144	DOCUMENTS.exe	29
PID 1144 wrote to memory of 608	1144	DOCUMENTS.exe	29
PID 1144 wrote to memory of 608	1144	DOCUMENTS.exe	29

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	DOCUMENTS.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	DOCUMENTS.exe

C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe
"C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1144
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:944
- C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe
  C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:608

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

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

Replay Monitor

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Downloads

memory/608-65-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/608-72-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/608-70-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/608-67-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/608-66-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/608-62-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/608-63-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/944-60-0x000000006FBC0000-0x000000007016B000-memory.dmp

Filesize
5.7MB

Download
memory/944-59-0x000000006FBC0000-0x000000007016B000-memory.dmp

Filesize
5.7MB

Download
memory/944-58-0x000000006FBC0000-0x000000007016B000-memory.dmp

Filesize
5.7MB

Download
memory/944-57-0x0000000075AD1000-0x0000000075AD3000-memory.dmp

Filesize
8KB

Download
memory/1144-55-0x00000000063E0000-0x000000000665A000-memory.dmp

Filesize
2.5MB

Download
memory/1144-61-0x0000000002680000-0x00000000026D4000-memory.dmp

Filesize
336KB

Download
memory/1144-54-0x0000000000820000-0x0000000000D0E000-memory.dmp

Filesize
4.9MB

Download

Analysis

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