agenttesla | 86b07ab0bc47fe6d3436da9e06c413c7d4575057b0b4b25a7caf3595c4e1f38e

General

Target

Halkbank,pdf.exe
Size

845KB
MD5

eb34442586cd975b248f9c5391399abe
SHA1

f9ed2d85ea52fb89442fb62f3710d70461da87a3
SHA256

86b07ab0bc47fe6d3436da9e06c413c7d4575057b0b4b25a7caf3595c4e1f38e
SHA512

9734fdc26873760b11ac88dba9e095ae50fd1866a91167f6c8d0163ca1d565477f3e86d18576aa9b628218ca7be60bd57a1b516b85bc7ec22d31472c890dd341
SSDEEP

12288:cVcIxQiC/ooGH1dvSJ4YSlnOLgTtTJX4F2lfO/Q7OPVRSWerc:cVcqMooGHTYSlnOLgT4F42/4OtYDrc

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot5792996127:AAEo0wCCYZp60yQsf_X1P7t-T5AAK5KPYXY/

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
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-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank,pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank,pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank,pdf.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-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\regis = "C:\\Users\\Admin\\AppData\\Roaming\\regis\\regis.exe"	Halkbank,pdf.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
38	api.ipify.org
39	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3340 set thread context of 4164	3340	Halkbank,pdf.exe	89

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
3340	Halkbank,pdf.exe
3340	Halkbank,pdf.exe
3340	Halkbank,pdf.exe
3340	Halkbank,pdf.exe
4164	Halkbank,pdf.exe
4164	Halkbank,pdf.exe
4164	Halkbank,pdf.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3340	Halkbank,pdf.exe
Token: SeDebugPrivilege	4164	Halkbank,pdf.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4164	Halkbank,pdf.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3340 wrote to memory of 3744	3340	Halkbank,pdf.exe	88
PID 3340 wrote to memory of 3744	3340	Halkbank,pdf.exe	88
PID 3340 wrote to memory of 3744	3340	Halkbank,pdf.exe	88
PID 3340 wrote to memory of 4164	3340	Halkbank,pdf.exe	89
PID 3340 wrote to memory of 4164	3340	Halkbank,pdf.exe	89
PID 3340 wrote to memory of 4164	3340	Halkbank,pdf.exe	89
PID 3340 wrote to memory of 4164	3340	Halkbank,pdf.exe	89
PID 3340 wrote to memory of 4164	3340	Halkbank,pdf.exe	89
PID 3340 wrote to memory of 4164	3340	Halkbank,pdf.exe	89
PID 3340 wrote to memory of 4164	3340	Halkbank,pdf.exe	89
PID 3340 wrote to memory of 4164	3340	Halkbank,pdf.exe	89

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	Halkbank,pdf.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	Halkbank,pdf.exe

C:\Users\Admin\AppData\Local\Temp\Halkbank,pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Halkbank,pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3340
- C:\Users\Admin\AppData\Local\Temp\Halkbank,pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Halkbank,pdf.exe"
  2⤵
  PID:3744
- C:\Users\Admin\AppData\Local\Temp\Halkbank,pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Halkbank,pdf.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:4164

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

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3340-132-0x00000000003B0000-0x000000000048A000-memory.dmp

Filesize
872KB

Download
memory/3340-133-0x0000000005390000-0x0000000005934000-memory.dmp

Filesize
5.6MB

Download
memory/3340-134-0x0000000004E80000-0x0000000004F12000-memory.dmp

Filesize
584KB

Download
memory/3340-135-0x0000000004E10000-0x0000000004E1A000-memory.dmp

Filesize
40KB

Download
memory/3340-136-0x0000000008730000-0x00000000087CC000-memory.dmp

Filesize
624KB

Download
memory/3744-137-0x0000000000000000-mapping.dmp

Download
memory/4164-138-0x0000000000000000-mapping.dmp

Download
memory/4164-139-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/4164-140-0x00000000060D0000-0x0000000006136000-memory.dmp

Filesize
408KB

Download
memory/4164-141-0x0000000007150000-0x00000000071A0000-memory.dmp

Filesize
320KB

Download

Analysis

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