agenttesla | 77dd82d858166a180a5de6d9da606500cd41fba6fe1fb7bc09c63162af78bb48

General

Target

MT103.exe
Size

1.1MB
MD5

b1d3fd78e907eda6633cff65693d6e8d
SHA1

0254e7859a88131131fafd7c583637108b62b6fd
SHA256

77dd82d858166a180a5de6d9da606500cd41fba6fe1fb7bc09c63162af78bb48
SHA512

717b19a7d06a5b306e34c29c2cd4e5c0e16158372718c90475296f3dc895d2a3d8736a27e65f6d5bea4a0f50be3b1cf979ce49560c52674b90545e2bbb4aa714
SSDEEP

24576:KP9cAGtjJQX6C2/aHeWvRC4hDIZDTB8pnzTccO:yC7Jv3NWvMyUoZvN

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot1644755040:AAGRTnph6BdO8-t1bJaOyVu9aeuJErmisqs/sendDocument

Signatures

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

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	RegSvcs.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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	MT103.exe

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	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.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\yqWDN = "C:\\Users\\Admin\\AppData\\Roaming\\yqWDN\\yqWDN.exe"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4352 set thread context of 4988	4352	MT103.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
5064	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
4352	MT103.exe
4352	MT103.exe
4352	MT103.exe
4988	RegSvcs.exe
4988	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4352	MT103.exe
Token: SeDebugPrivilege	4988	RegSvcs.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4352 wrote to memory of 5064	4352	MT103.exe	88
PID 4352 wrote to memory of 5064	4352	MT103.exe	88
PID 4352 wrote to memory of 5064	4352	MT103.exe	88
PID 4352 wrote to memory of 2512	4352	MT103.exe	90
PID 4352 wrote to memory of 2512	4352	MT103.exe	90
PID 4352 wrote to memory of 2512	4352	MT103.exe	90
PID 4352 wrote to memory of 4988	4352	MT103.exe	91
PID 4352 wrote to memory of 4988	4352	MT103.exe	91
PID 4352 wrote to memory of 4988	4352	MT103.exe	91
PID 4352 wrote to memory of 4988	4352	MT103.exe	91
PID 4352 wrote to memory of 4988	4352	MT103.exe	91
PID 4352 wrote to memory of 4988	4352	MT103.exe	91
PID 4352 wrote to memory of 4988	4352	MT103.exe	91
PID 4352 wrote to memory of 4988	4352	MT103.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	RegSvcs.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	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\MT103.exe
"C:\Users\Admin\AppData\Local\Temp\MT103.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4352
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ZRCHTBhOYvtmd" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1865.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:5064
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "{path}"
  2⤵
  PID:2512
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "{path}"
  2⤵
  - Drops file in Drivers directory
  - Accesses Microsoft Outlook profiles
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:4988

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

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp1865.tmp

Filesize
1KB

MD5
53dd2c7f6bfeebdec5fbc7eaaddd0596

SHA1
304b69d9fed5c6f3b7a2d970ab067ac31f87042b

SHA256
fe400f1077df74595f9bab50add53f22d1705cdf671a3597e215b89e20df623a

SHA512
169fdce2757a00063ce4819baa4378312f6f816d2a39bdebed27999f1bdb02c3c3496eced65379055394e180d6286c5d998400d9afcc2a08aa0b7b660ed3568b

Download Submit
memory/4352-132-0x0000000000DA0000-0x0000000000EC2000-memory.dmp

Filesize
1.1MB

Download
memory/4352-133-0x0000000005EB0000-0x0000000006454000-memory.dmp

Filesize
5.6MB

Download
memory/4352-134-0x0000000005900000-0x0000000005992000-memory.dmp

Filesize
584KB

Download
memory/4352-135-0x00000000059A0000-0x0000000005A3C000-memory.dmp

Filesize
624KB

Download
memory/4352-136-0x0000000003420000-0x000000000342A000-memory.dmp

Filesize
40KB

Download
memory/4988-141-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/4988-142-0x0000000006130000-0x0000000006196000-memory.dmp

Filesize
408KB

Download
memory/4988-143-0x00000000066E0000-0x0000000006730000-memory.dmp

Filesize
320KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads