agenttesla | c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21

General

Target

0x0006000000014495-71.exe
Size

25KB
MD5

439c8eaf5105f874659e06ecca63e66b
SHA1

f264db763cacbcbc6620353097b1cd6367d14afb
SHA256

c5f8a57e9e252306e9876a01fbc423420693bf04cf7c33fb0bbf972e34299f21
SHA512

2cf9bb028b1d8ca1c321f9a809c6e1d0552992eefc2229661579edeaac8ef0d9926ff1e0a26d8962f6672a45be7bc7b2a86b8331a43a922418569b889853ac5a
SSDEEP

96:1Nd/FIveD4XyrmRNb++DvI63LilNRZjHgnmXV/cfDj6hLGkZNiRB4e3T3e4KxJdv:bxFIqmA62lNTDcmXZCehLrZbxJX

Score

10^/10

agenttesla purecrypter collection downloader keylogger loader persistence spyware stealer trojan

Malware Config

Extracted

Family

purecrypter

C2

http://www.ugr.leszczynskie.net/galeria/Xcilfp.png

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
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-1-5-21-3430344531-3702557399-3004411149-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	0x0006000000014495-71.exe
Key opened	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	0x0006000000014495-71.exe
Key opened	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	0x0006000000014495-71.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-1-5-21-3430344531-3702557399-3004411149-1000\Software\Microsoft\Windows\CurrentVersion\Run\nEdIOIr = "C:\\Users\\Admin\\AppData\\Roaming\\nEdIOIr\\nEdIOIr.exe"	0x0006000000014495-71.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
7	api.ipify.org
8	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1392 set thread context of 1272	1392	0x0006000000014495-71.exe	30

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
1208	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1392	0x0006000000014495-71.exe
Token: SeDebugPrivilege	1208	powershell.exe
Token: SeDebugPrivilege	1272	0x0006000000014495-71.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1272	0x0006000000014495-71.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1392 wrote to memory of 1208	1392	0x0006000000014495-71.exe	28
PID 1392 wrote to memory of 1208	1392	0x0006000000014495-71.exe	28
PID 1392 wrote to memory of 1208	1392	0x0006000000014495-71.exe	28
PID 1392 wrote to memory of 1208	1392	0x0006000000014495-71.exe	28
PID 1392 wrote to memory of 1272	1392	0x0006000000014495-71.exe	30
PID 1392 wrote to memory of 1272	1392	0x0006000000014495-71.exe	30
PID 1392 wrote to memory of 1272	1392	0x0006000000014495-71.exe	30
PID 1392 wrote to memory of 1272	1392	0x0006000000014495-71.exe	30
PID 1392 wrote to memory of 1272	1392	0x0006000000014495-71.exe	30
PID 1392 wrote to memory of 1272	1392	0x0006000000014495-71.exe	30
PID 1392 wrote to memory of 1272	1392	0x0006000000014495-71.exe	30
PID 1392 wrote to memory of 1272	1392	0x0006000000014495-71.exe	30
PID 1392 wrote to memory of 1272	1392	0x0006000000014495-71.exe	30

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	0x0006000000014495-71.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	0x0006000000014495-71.exe

C:\Users\Admin\AppData\Local\Temp\0x0006000000014495-71.exe
"C:\Users\Admin\AppData\Local\Temp\0x0006000000014495-71.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1392
- 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:1208
- C:\Users\Admin\AppData\Local\Temp\0x0006000000014495-71.exe
  C:\Users\Admin\AppData\Local\Temp\0x0006000000014495-71.exe
  2⤵
  - Accesses Microsoft Outlook profiles
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:1272

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

C:\Users\Admin\AppData\Local\Temp\CabB11A.tmp

Filesize
61KB

MD5
fc4666cbca561e864e7fdf883a9e6661

SHA1
2f8d6094c7a34bf12ea0bbf0d51ee9c5bb7939a5

SHA256
10f3deb6c452d749a7451b5d065f4c0449737e5ee8a44f4d15844b503141e65b

SHA512
c71f54b571e01f247f072be4bbebdf5d8410b67eb79a61e7e0d9853fe857ab9bd12f53e6af3394b935560178107291fc4be351b27deb388eba90ba949633d57d

Download Submit
memory/1208-60-0x00000000022C0000-0x0000000002300000-memory.dmp

Filesize
256KB

Download
memory/1208-63-0x00000000022C0000-0x0000000002300000-memory.dmp

Filesize
256KB

Download
memory/1208-64-0x00000000022C0000-0x0000000002300000-memory.dmp

Filesize
256KB

Download
memory/1208-61-0x00000000022C0000-0x0000000002300000-memory.dmp

Filesize
256KB

Download
memory/1272-66-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1272-68-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1272-100-0x0000000001E50000-0x0000000001E90000-memory.dmp

Filesize
256KB

Download
memory/1272-75-0x0000000001E50000-0x0000000001E90000-memory.dmp

Filesize
256KB

Download
memory/1272-65-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1272-74-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1272-67-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1272-72-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1272-69-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1272-70-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1392-62-0x0000000004930000-0x0000000004970000-memory.dmp

Filesize
256KB

Download
memory/1392-54-0x0000000000800000-0x000000000080C000-memory.dmp

Filesize
48KB

Download
memory/1392-56-0x0000000005AC0000-0x0000000005B72000-memory.dmp

Filesize
712KB

Download
memory/1392-55-0x0000000004930000-0x0000000004970000-memory.dmp

Filesize
256KB

Download
memory/1392-57-0x00000000004D0000-0x00000000004EA000-memory.dmp

Filesize
104KB

Download

Analysis

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