agenttesla | 0113a0681674a5ce9fc9d80f924a196ffb7471f550fd79f2e49356b7e4e76cb5

General

Target

Halkbank_Ekstre_20191102_073809_405251-PDF.exe
Size

273KB
MD5

9326352797b86810855d22c81b5b6cd6
SHA1

60a64fda0b9a1f68aeb5c481e54fc4cfaab1f99a
SHA256

0113a0681674a5ce9fc9d80f924a196ffb7471f550fd79f2e49356b7e4e76cb5
SHA512

7239b860606b499f0fa8c942f3f598f6429c469b9aed7896d4c60f318d57a452101ed23e2561aaa0331932c878756a438b3c5020f6fbba9afdccf368122fac27
SSDEEP

6144:pYa6KyZJ06lDFyA08T+uhI2B2T6xoK+QUoc2a094ZQQ5U0yK:pY8y86lDcAV+l9OOFxSpK

Score

10^/10

agenttesla collection keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot6261006732:AAFiMpPz79k5Wkkw0xvICpfaipqXFQbQmmo/

Signatures

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

Loads dropped DLL 1 IoCs

pid	Process
1940	Halkbank_Ekstre_20191102_073809_405251-PDF.exe

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-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank_Ekstre_20191102_073809_405251-PDF.exe
Key opened	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank_Ekstre_20191102_073809_405251-PDF.exe
Key opened	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank_Ekstre_20191102_073809_405251-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
4	api.ipify.org
5	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1940 set thread context of 1472	1940	Halkbank_Ekstre_20191102_073809_405251-PDF.exe	28

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

System Information Discovery
T1082

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1940	Halkbank_Ekstre_20191102_073809_405251-PDF.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1472	Halkbank_Ekstre_20191102_073809_405251-PDF.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1472	Halkbank_Ekstre_20191102_073809_405251-PDF.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1940 wrote to memory of 1472	1940	Halkbank_Ekstre_20191102_073809_405251-PDF.exe	28
PID 1940 wrote to memory of 1472	1940	Halkbank_Ekstre_20191102_073809_405251-PDF.exe	28
PID 1940 wrote to memory of 1472	1940	Halkbank_Ekstre_20191102_073809_405251-PDF.exe	28
PID 1940 wrote to memory of 1472	1940	Halkbank_Ekstre_20191102_073809_405251-PDF.exe	28
PID 1940 wrote to memory of 1472	1940	Halkbank_Ekstre_20191102_073809_405251-PDF.exe	28

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank_Ekstre_20191102_073809_405251-PDF.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank_Ekstre_20191102_073809_405251-PDF.exe

C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20191102_073809_405251-PDF.exe
"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20191102_073809_405251-PDF.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1940
- C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20191102_073809_405251-PDF.exe
  "C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20191102_073809_405251-PDF.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:1472

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

\Users\Admin\AppData\Local\Temp\nsoC5C2.tmp\tdgosg.dll

Filesize
13KB

MD5
8663749ad4e9d1cfcd808c77fa799a05

SHA1
67c9733b24633317783c44b715205ef5f0755eaa

SHA256
16d4581a7c084bf4ff8856527173c82447c7032a793f695f3751231b34a9c3d2

SHA512
c12938111eae6a24b5d0546e4282f46c7a3dcda326769c5406df433b4b4054610dfefe0aa435441d7c1b13119380361b5b585af3c1ad211929f804a4b57565e4

Download Submit
memory/1472-61-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/1472-63-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/1472-64-0x0000000000490000-0x00000000004C0000-memory.dmp

Filesize
192KB

Download
memory/1472-65-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/1472-66-0x00000000020E0000-0x0000000002120000-memory.dmp

Filesize
256KB

Download

Analysis

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