agenttesla | d288d112803cc81d6d78ae0e11766481553d280d3644f75208825aba7362870d

General

Target

Documents.exe
Size

1.4MB
MD5

cc0f7853951cc060df6fba320853caf6
SHA1

4731a5de5ca911bfc59323d1f1ba86cd81217b49
SHA256

d288d112803cc81d6d78ae0e11766481553d280d3644f75208825aba7362870d
SHA512

6e063bd0d7ce0c20f2d493f0104f001e7b2be7a421609c98e5b709bd08ec4432d41cc7f147875461f4fd5ced935ed563d0ab532532f99a78eabcd3edc997a850
SSDEEP

24576:nKXB4Ron1z3es/LitORJ+w6lJYDJ1pPC4IXPxJorX34JZN7+39DeLW:nKXGqnN3es/LiJwxV19C42nob3o7ko

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot1507062795:AAEBb0H5OYbp-dWwXk8ffQp0InjOhKxhpbU/

Signatures

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

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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	Documents.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-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Documents.exe
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Documents.exe
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Documents.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-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SsLtblq = "C:\\Users\\Admin\\AppData\\Roaming\\SsLtblq\\SsLtblq.exe"	Documents.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3756 set thread context of 4508	3756	Documents.exe	91

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
1784	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3756	Documents.exe
3756	Documents.exe
3756	Documents.exe
4508	Documents.exe
4508	Documents.exe
4508	Documents.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3756	Documents.exe
Token: SeDebugPrivilege	4508	Documents.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 3756 wrote to memory of 1784	3756	Documents.exe	88
PID 3756 wrote to memory of 1784	3756	Documents.exe	88
PID 3756 wrote to memory of 1784	3756	Documents.exe	88
PID 3756 wrote to memory of 1624	3756	Documents.exe	90
PID 3756 wrote to memory of 1624	3756	Documents.exe	90
PID 3756 wrote to memory of 1624	3756	Documents.exe	90
PID 3756 wrote to memory of 4508	3756	Documents.exe	91
PID 3756 wrote to memory of 4508	3756	Documents.exe	91
PID 3756 wrote to memory of 4508	3756	Documents.exe	91
PID 3756 wrote to memory of 4508	3756	Documents.exe	91
PID 3756 wrote to memory of 4508	3756	Documents.exe	91
PID 3756 wrote to memory of 4508	3756	Documents.exe	91
PID 3756 wrote to memory of 4508	3756	Documents.exe	91
PID 3756 wrote to memory of 4508	3756	Documents.exe	91

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Documents.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Documents.exe

C:\Users\Admin\AppData\Local\Temp\Documents.exe
"C:\Users\Admin\AppData\Local\Temp\Documents.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3756
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\cjZbsu" /XML "C:\Users\Admin\AppData\Local\Temp\tmp77B0.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1784
- C:\Users\Admin\AppData\Local\Temp\Documents.exe
  "{path}"
  2⤵
  PID:1624
- C:\Users\Admin\AppData\Local\Temp\Documents.exe
  "{path}"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:4508

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

Scheduled Task

Privilege Escalation

Scheduled Task

1

T1053

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

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Downloads

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

Filesize
1KB

MD5
84e77a587d94307c0ac1357eb4d3d46f

SHA1
83cc900f9401f43d181207d64c5adba7a85edc1e

SHA256
e16024b092a026a9dc00df69d4b9bbcab7b2dc178dc5291fc308a1abc9304a99

SHA512
aefb5c62200b3ed97718d20a89990954d4d8acdc0a6a73c5a420f1bba619cb79e70c2cd0a579b9f52dc6b09e1de2cea6cd6cac4376cfee92d94e2c01d310f691

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp77B0.tmp

Filesize
1KB

MD5
410d0f6fdba5bd7c4fd6e4e5372996fd

SHA1
ae9f885da818953e4f263fb32100e12a98fde037

SHA256
ec2d19786aad313ef5a6828c11bb67142266be5930ce0739a3e97ecca6bfa522

SHA512
b2fde28a4c0182ff3fdf4d25eea632fc315ad0e30db6522afbc9c757bd12166896f059babe3c224f386b79fdf0a40dc148264e140fa2b9062647628fb60514ff

Download Submit
memory/3756-135-0x0000000004DA0000-0x0000000004E3C000-memory.dmp

Filesize
624KB

Download
memory/3756-136-0x0000000004C10000-0x0000000004C1A000-memory.dmp

Filesize
40KB

Download
memory/3756-132-0x0000000000120000-0x0000000000290000-memory.dmp

Filesize
1.4MB

Download
memory/3756-134-0x0000000004C20000-0x0000000004CB2000-memory.dmp

Filesize
584KB

Download
memory/3756-133-0x00000000052B0000-0x0000000005854000-memory.dmp

Filesize
5.6MB

Download
memory/4508-141-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/4508-143-0x0000000005CA0000-0x0000000005D06000-memory.dmp

Filesize
408KB

Download
memory/4508-144-0x0000000006040000-0x0000000006090000-memory.dmp

Filesize
320KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads