agenttesla | cd1f59f90ff20758cf3b925e4eb7c5a3f4b8b49d2375e2f656f65cde8e2d6aae

Analysis

max time kernel
140s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-en-20220113
submitted
22/02/2022, 08:27

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General

Target
1fbe4b287fa7ba9f14d6864a54308221.exe
Size 897KB
Sample220222-kce9esefd4
SHA256 cd1f59f90ff20758cf3b925e4eb7c5a3f4b8b49d2375e2f656f65cde8e2d6aae
MD5 1fbe4b287fa7ba9f14d6864a54308221
SHA1 05b63b0ed6a91ff0ea4f66b8c375c3913913af77
SHA512 740443296b8dacfe9542926424584fc3f95db27ee4a165f4ef062928bd9c57fd6cda04baa41ca59a0255ef6fa3dcd9a8bfa08d671a8cb451941bae66a307fa1b
MD5 SHA1 SHA512

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
smtp.jesmedla.com
Port
587
Username
[email protected]
Password
Meckmeck123

Signatures

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

AgentTesla Payload 1 IoCs

resource	yara_rule
behavioral2/memory/4356-140-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

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-1-5-21-1346565761-3498240568-4147300184-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	1fbe4b287fa7ba9f14d6864a54308221.exe
Key opened	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	1fbe4b287fa7ba9f14d6864a54308221.exe
Key opened	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	1fbe4b287fa7ba9f14d6864a54308221.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-1-5-21-1346565761-3498240568-4147300184-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yVsmj = "C:\\Users\\Admin\\AppData\\Roaming\\yVsmj\\yVsmj.exe"	1fbe4b287fa7ba9f14d6864a54308221.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1264 set thread context of 4356	1264	1fbe4b287fa7ba9f14d6864a54308221.exe	93

Drops file in Windows directory 6 IoCs

description	ioc	Process
File opened for modification	C:\Windows\WindowsUpdate.log	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\Logs\edb.chk	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\Logs\edb.log	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\DataStore.edb	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\DataStore.jfm	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\ReportingEvents.log	svchost.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1264	1fbe4b287fa7ba9f14d6864a54308221.exe
1264	1fbe4b287fa7ba9f14d6864a54308221.exe
1264	1fbe4b287fa7ba9f14d6864a54308221.exe
1264	1fbe4b287fa7ba9f14d6864a54308221.exe
4356	1fbe4b287fa7ba9f14d6864a54308221.exe
4356	1fbe4b287fa7ba9f14d6864a54308221.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
4356	1fbe4b287fa7ba9f14d6864a54308221.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3676	svchost.exe
Token: SeCreatePagefilePrivilege	3676	svchost.exe
Token: SeShutdownPrivilege	3676	svchost.exe
Token: SeCreatePagefilePrivilege	3676	svchost.exe
Token: SeShutdownPrivilege	3676	svchost.exe
Token: SeCreatePagefilePrivilege	3676	svchost.exe
Token: SeDebugPrivilege	1264	1fbe4b287fa7ba9f14d6864a54308221.exe
Token: SeDebugPrivilege	4356	1fbe4b287fa7ba9f14d6864a54308221.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4356	1fbe4b287fa7ba9f14d6864a54308221.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1264 wrote to memory of 5084	1264	1fbe4b287fa7ba9f14d6864a54308221.exe	91
PID 1264 wrote to memory of 5084	1264	1fbe4b287fa7ba9f14d6864a54308221.exe	91
PID 1264 wrote to memory of 5084	1264	1fbe4b287fa7ba9f14d6864a54308221.exe	91
PID 1264 wrote to memory of 5056	1264	1fbe4b287fa7ba9f14d6864a54308221.exe	92
PID 1264 wrote to memory of 5056	1264	1fbe4b287fa7ba9f14d6864a54308221.exe	92
PID 1264 wrote to memory of 5056	1264	1fbe4b287fa7ba9f14d6864a54308221.exe	92
PID 1264 wrote to memory of 4356	1264	1fbe4b287fa7ba9f14d6864a54308221.exe	93
PID 1264 wrote to memory of 4356	1264	1fbe4b287fa7ba9f14d6864a54308221.exe	93
PID 1264 wrote to memory of 4356	1264	1fbe4b287fa7ba9f14d6864a54308221.exe	93
PID 1264 wrote to memory of 4356	1264	1fbe4b287fa7ba9f14d6864a54308221.exe	93
PID 1264 wrote to memory of 4356	1264	1fbe4b287fa7ba9f14d6864a54308221.exe	93
PID 1264 wrote to memory of 4356	1264	1fbe4b287fa7ba9f14d6864a54308221.exe	93
PID 1264 wrote to memory of 4356	1264	1fbe4b287fa7ba9f14d6864a54308221.exe	93
PID 1264 wrote to memory of 4356	1264	1fbe4b287fa7ba9f14d6864a54308221.exe	93

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	1fbe4b287fa7ba9f14d6864a54308221.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	1fbe4b287fa7ba9f14d6864a54308221.exe

C:\Users\Admin\AppData\Local\Temp\1fbe4b287fa7ba9f14d6864a54308221.exe
"C:\Users\Admin\AppData\Local\Temp\1fbe4b287fa7ba9f14d6864a54308221.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1264
- C:\Users\Admin\AppData\Local\Temp\1fbe4b287fa7ba9f14d6864a54308221.exe
  "C:\Users\Admin\AppData\Local\Temp\1fbe4b287fa7ba9f14d6864a54308221.exe"
  2⤵
  PID:5084
- C:\Users\Admin\AppData\Local\Temp\1fbe4b287fa7ba9f14d6864a54308221.exe
  "C:\Users\Admin\AppData\Local\Temp\1fbe4b287fa7ba9f14d6864a54308221.exe"
  2⤵
  PID:5056
- C:\Users\Admin\AppData\Local\Temp\1fbe4b287fa7ba9f14d6864a54308221.exe
  "C:\Users\Admin\AppData\Local\Temp\1fbe4b287fa7ba9f14d6864a54308221.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:4356

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:3676

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

memory/1264-130-0x00000000007C0000-0x00000000008A6000-memory.dmp

Download

memory/1264-131-0x0000000005800000-0x0000000005DA4000-memory.dmp

Download

memory/1264-132-0x0000000074D4E000-0x0000000074D4F000-memory.dmp

Download

memory/1264-133-0x00000000052F0000-0x0000000005382000-memory.dmp

Download

memory/1264-134-0x0000000005270000-0x000000000527A000-memory.dmp

Download

memory/1264-135-0x0000000005580000-0x0000000005581000-memory.dmp

Download

memory/1264-139-0x0000000005DB0000-0x0000000005E4C000-memory.dmp

Download

memory/3676-138-0x0000025D76000000-0x0000025D76004000-memory.dmp

Download

memory/3676-137-0x0000025D73920000-0x0000025D73930000-memory.dmp

Download

memory/3676-136-0x0000025D73380000-0x0000025D73390000-memory.dmp

Download

memory/4356-140-0x0000000000400000-0x000000000043C000-memory.dmp

Download

memory/4356-141-0x0000000074D4E000-0x0000000074D4F000-memory.dmp

Download

memory/4356-142-0x0000000005070000-0x0000000005071000-memory.dmp

Download

memory/4356-143-0x0000000005FA0000-0x0000000006006000-memory.dmp

Download

memory/4356-144-0x0000000006420000-0x0000000006470000-memory.dmp

Download

memory/4356-145-0x0000000005071000-0x0000000005072000-memory.dmp

Download