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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\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-1-5-21-4063495947-34355257-727531523-1000\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 1300 set thread context of 1804	1300	MT103.exe	29

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
1604	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1300	MT103.exe
1804	RegSvcs.exe
1804	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1300	MT103.exe
Token: SeDebugPrivilege	1804	RegSvcs.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1300 wrote to memory of 1604	1300	MT103.exe	27
PID 1300 wrote to memory of 1604	1300	MT103.exe	27
PID 1300 wrote to memory of 1604	1300	MT103.exe	27
PID 1300 wrote to memory of 1604	1300	MT103.exe	27
PID 1300 wrote to memory of 1804	1300	MT103.exe	29
PID 1300 wrote to memory of 1804	1300	MT103.exe	29
PID 1300 wrote to memory of 1804	1300	MT103.exe	29
PID 1300 wrote to memory of 1804	1300	MT103.exe	29
PID 1300 wrote to memory of 1804	1300	MT103.exe	29
PID 1300 wrote to memory of 1804	1300	MT103.exe	29
PID 1300 wrote to memory of 1804	1300	MT103.exe	29
PID 1300 wrote to memory of 1804	1300	MT103.exe	29
PID 1300 wrote to memory of 1804	1300	MT103.exe	29
PID 1300 wrote to memory of 1804	1300	MT103.exe	29
PID 1300 wrote to memory of 1804	1300	MT103.exe	29
PID 1300 wrote to memory of 1804	1300	MT103.exe	29

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\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⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1300
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ZRCHTBhOYvtmd" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9732.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1604
- 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:1804

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp9732.tmp

Filesize
1KB

MD5
58a5f9d6601323afd1bdcd5af756ee34

SHA1
cdf9bb6ed0f75de3cba8c4c8d228ed2ee7d16450

SHA256
3dca1d9547eba1153b14c62d881d7e5d02363d63bf319ad48fce05cbdd74c90f

SHA512
15dea82aa9ef33a7fd1bb063411bee9443d005ab03500226b7692b884b685da06cf504eeb713cb636f9aeb04acce8e9352e4a6de3c519a298781cf1efc2fddc8

Download Submit
memory/1300-57-0x0000000004D80000-0x0000000004E04000-memory.dmp

Filesize
528KB

Download
memory/1300-56-0x00000000008B0000-0x00000000008C2000-memory.dmp

Filesize
72KB

Download
memory/1300-54-0x0000000000DA0000-0x0000000000EC2000-memory.dmp

Filesize
1.1MB

Download
memory/1300-58-0x0000000004E40000-0x0000000004E7C000-memory.dmp

Filesize
240KB

Download
memory/1300-55-0x00000000757A1000-0x00000000757A3000-memory.dmp

Filesize
8KB

Download
memory/1804-64-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1804-61-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1804-62-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1804-65-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1804-66-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1804-69-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1804-71-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads