agenttesla | 465a71fa9458ee9162610eae78424a2a3f75561af0a2ce10ab3e6afde10aa74c

General

Target

MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe
Size

23KB
MD5

8531ba62c67d13ce3ad94bcd42bb2c00
SHA1

a9cee94ac6fe7afd2f2647e08330ce47269c57d6
SHA256

465a71fa9458ee9162610eae78424a2a3f75561af0a2ce10ab3e6afde10aa74c
SHA512

a183e13a1c4231a702b7c560b69313684d08ffb46580cd3fbc3641e197560ee61d27ccd109ba457ceac33b62f1fed15a34d6fe0a67f3989b7bfe19f4e39f5c53
SSDEEP

96:mHoxS1E/nqEnkpB0gJ2YGkLtUzVHEHtA6xQkVbR9x5YSGOomjfjw5aBZ7bBlHWFU:y1E/jSOVYrLtF/6ObR9xFyajGaBZzHz

Score

10^/10

agenttesla purecrypter collection downloader keylogger loader spyware stealer trojan

Malware Config

Extracted

Family

purecrypter

C2

https://onedrive.live.com/download?cid=BD9480D014FE52E5&resid=BD9480D014FE52E5%21380&authkey=AITcidcD1qd3mdU

Extracted

Family

agenttesla

C2

https://discord.com/api/webhooks/1070624884557893682/rLhLtlpSyBSHVnPJn5GQxtQ4uFeB-0QcpKQH1cFoVLnDhwMGNHekV5dNTg2kEYj8PtMY

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
PureCrypter
PureCrypter is a .NET malware loader first seen in early 2021.
loader downloader purecrypter

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
44	api.ipify.org
45	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4848 set thread context of 4704	4848	MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe	90

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 2 IoCs

pid	Process
3816	powershell.exe
3816	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4848	MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe
Token: SeDebugPrivilege	3816	powershell.exe
Token: SeDebugPrivilege	4704	MSBuild.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4848 wrote to memory of 3816	4848	MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe	81
PID 4848 wrote to memory of 3816	4848	MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe	81
PID 4848 wrote to memory of 3816	4848	MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe	81
PID 4848 wrote to memory of 4704	4848	MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe	90
PID 4848 wrote to memory of 4704	4848	MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe	90
PID 4848 wrote to memory of 4704	4848	MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe	90
PID 4848 wrote to memory of 4704	4848	MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe	90
PID 4848 wrote to memory of 4704	4848	MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe	90
PID 4848 wrote to memory of 4704	4848	MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe	90
PID 4848 wrote to memory of 4704	4848	MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe	90
PID 4848 wrote to memory of 4704	4848	MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe	90

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe
"C:\Users\Admin\AppData\Local\Temp\MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4848
- 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:3816
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:4704

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

memory/3816-140-0x0000000005940000-0x00000000059A6000-memory.dmp

Filesize
408KB

Download
memory/3816-141-0x0000000006040000-0x000000000605E000-memory.dmp

Filesize
120KB

Download
memory/3816-143-0x0000000006550000-0x000000000656A000-memory.dmp

Filesize
104KB

Download
memory/3816-142-0x0000000007880000-0x0000000007EFA000-memory.dmp

Filesize
6.5MB

Download
memory/3816-137-0x0000000004A20000-0x0000000004A56000-memory.dmp

Filesize
216KB

Download
memory/3816-138-0x00000000051B0000-0x00000000057D8000-memory.dmp

Filesize
6.2MB

Download
memory/3816-139-0x00000000057E0000-0x0000000005846000-memory.dmp

Filesize
408KB

Download
memory/4704-145-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/4704-146-0x00000000066C0000-0x00000000066CA000-memory.dmp

Filesize
40KB

Download
memory/4704-147-0x0000000006910000-0x0000000006960000-memory.dmp

Filesize
320KB

Download
memory/4704-148-0x0000000006B30000-0x0000000006CF2000-memory.dmp

Filesize
1.8MB

Download
memory/4848-133-0x0000000005BF0000-0x0000000006194000-memory.dmp

Filesize
5.6MB

Download
memory/4848-135-0x0000000007380000-0x00000000073A2000-memory.dmp

Filesize
136KB

Download
memory/4848-132-0x0000000000D30000-0x0000000000D3C000-memory.dmp

Filesize
48KB

Download
memory/4848-134-0x00000000056E0000-0x0000000005772000-memory.dmp

Filesize
584KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads