agenttesla | fdbf252fb3867cb9b7adb13b8b7716e2b585fda8701270b28784cc506698dc52

General

Target

Quotation.exe
Size

2.1MB
MD5

bc00e7956757b6beda2899c9b0650bb7
SHA1

70f49f5d30f3bcefc68a89033869d537dc3e98b4
SHA256

fdbf252fb3867cb9b7adb13b8b7716e2b585fda8701270b28784cc506698dc52
SHA512

6c3825b283ee2d0704e1e7542bd86d51a5775a6a66308d2e0f0e0801c2e4dd78f49dd93177efbdc6a660c60ad625b99f8540d4361caa774f54daacf5f542659c
SSDEEP

24576:wZoalZDKcTuY9Tc+TnWT1fPlwJhbz/iHaYGT404LrXhFQPXJO70yFzfAEuj1ZLq9:lEW5lsbLzTkzEVTLa

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot5998210197:AAH-JIKMHb7dhxxuEktYZzJVzRIxsjtpP7Y/

Signatures

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

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,\"C:\\Users\\Admin\\AppData\\Roaming\\Lvxzuojt\\Titfeptt.exe\","	Quotation.exe

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-1-5-21-144354903-2550862337-1367551827-1000\Control Panel\International\Geo\Nation	Quotation.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-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Quotation.exe
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Quotation.exe
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Quotation.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
25	api.ipify.org
26	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4572 set thread context of 3220	4572	Quotation.exe	94

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 4 IoCs

pid	Process
3612	powershell.exe
3612	powershell.exe
4572	Quotation.exe
4572	Quotation.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3612	powershell.exe
Token: SeDebugPrivilege	4572	Quotation.exe
Token: SeDebugPrivilege	3220	Quotation.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3220	Quotation.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4572 wrote to memory of 3612	4572	Quotation.exe	85
PID 4572 wrote to memory of 3612	4572	Quotation.exe	85
PID 4572 wrote to memory of 3612	4572	Quotation.exe	85
PID 4572 wrote to memory of 2936	4572	Quotation.exe	93
PID 4572 wrote to memory of 2936	4572	Quotation.exe	93
PID 4572 wrote to memory of 2936	4572	Quotation.exe	93
PID 4572 wrote to memory of 3220	4572	Quotation.exe	94
PID 4572 wrote to memory of 3220	4572	Quotation.exe	94
PID 4572 wrote to memory of 3220	4572	Quotation.exe	94
PID 4572 wrote to memory of 3220	4572	Quotation.exe	94
PID 4572 wrote to memory of 3220	4572	Quotation.exe	94
PID 4572 wrote to memory of 3220	4572	Quotation.exe	94
PID 4572 wrote to memory of 3220	4572	Quotation.exe	94
PID 4572 wrote to memory of 3220	4572	Quotation.exe	94

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Quotation.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Quotation.exe

C:\Users\Admin\AppData\Local\Temp\Quotation.exe
"C:\Users\Admin\AppData\Local\Temp\Quotation.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4572
- 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:3612
- C:\Users\Admin\AppData\Local\Temp\Quotation.exe
  C:\Users\Admin\AppData\Local\Temp\Quotation.exe
  2⤵
  PID:2936
- C:\Users\Admin\AppData\Local\Temp\Quotation.exe
  C:\Users\Admin\AppData\Local\Temp\Quotation.exe
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:3220

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Quotation.exe.log

Filesize
1KB

MD5
7e88081fcf716d85992bb3af3d9b6454

SHA1
2153780fbc71061b0102a7a7b665349e1013e250

SHA256
5ffb4a3ea94a6a53c4f88e2191c6fec5fd8a7336e367aa113fe8c12631e0c4d2

SHA512
ec606e14367ae221c04f213a61a6f797034495121198e4788e3afa4aa8db67bf59c5c5210a56afae5557158e8923b013b371b84c7d64303618c5b4c57a2224f7

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5psxjpln.fom.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3220-163-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/3220-179-0x0000000005650000-0x0000000005660000-memory.dmp

Filesize
64KB

Download
memory/3220-178-0x00000000074A0000-0x000000000753C000-memory.dmp

Filesize
624KB

Download
memory/3220-171-0x00000000075D0000-0x0000000007792000-memory.dmp

Filesize
1.8MB

Download
memory/3220-170-0x0000000007320000-0x0000000007370000-memory.dmp

Filesize
320KB

Download
memory/3220-169-0x00000000072B0000-0x00000000072BA000-memory.dmp

Filesize
40KB

Download
memory/3220-168-0x00000000070D0000-0x0000000007162000-memory.dmp

Filesize
584KB

Download
memory/3220-167-0x0000000005650000-0x0000000005660000-memory.dmp

Filesize
64KB

Download
memory/3220-166-0x0000000005BA0000-0x0000000006144000-memory.dmp

Filesize
5.6MB

Download
memory/3612-140-0x0000000005100000-0x0000000005166000-memory.dmp

Filesize
408KB

Download
memory/3612-141-0x0000000005170000-0x00000000051D6000-memory.dmp

Filesize
408KB

Download
memory/3612-154-0x0000000006500000-0x000000000651A000-memory.dmp

Filesize
104KB

Download
memory/3612-136-0x00000000026C0000-0x00000000026F6000-memory.dmp

Filesize
216KB

Download
memory/3612-156-0x0000000002C40000-0x0000000002C50000-memory.dmp

Filesize
64KB

Download
memory/3612-157-0x0000000002C40000-0x0000000002C50000-memory.dmp

Filesize
64KB

Download
memory/3612-158-0x0000000002C40000-0x0000000002C50000-memory.dmp

Filesize
64KB

Download
memory/3612-152-0x0000000002C40000-0x0000000002C50000-memory.dmp

Filesize
64KB

Download
memory/3612-151-0x0000000006000000-0x000000000601E000-memory.dmp

Filesize
120KB

Download
memory/3612-153-0x0000000007840000-0x0000000007EBA000-memory.dmp

Filesize
6.5MB

Download
memory/3612-137-0x0000000005290000-0x00000000058B8000-memory.dmp

Filesize
6.2MB

Download
memory/3612-139-0x0000000002C40000-0x0000000002C50000-memory.dmp

Filesize
64KB

Download
memory/3612-138-0x0000000002C40000-0x0000000002C50000-memory.dmp

Filesize
64KB

Download
memory/4572-133-0x0000000000B80000-0x0000000000DA6000-memory.dmp

Filesize
2.1MB

Download
memory/4572-155-0x0000000005820000-0x0000000005830000-memory.dmp

Filesize
64KB

Download
memory/4572-135-0x0000000005820000-0x0000000005830000-memory.dmp

Filesize
64KB

Download
memory/4572-134-0x0000000005BB0000-0x0000000005BD2000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing