agenttesla | cf0bf5de52bbc06c76d726f34f17d10fe3759a067c1a51b704eefba18efe65d4

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
23-12-2024 17:52

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General

Target

5b6d5819cc000436777cda63e9022fdd19b15a91451c7b8c4608db9fcf3d359c.vbs
Size

2.4MB
MD5

7a690238b7ada1318edede1f7190ac29
SHA1

7c9df4979e1a5a9f205fc6c1e139112297ddc6bc
SHA256

5b6d5819cc000436777cda63e9022fdd19b15a91451c7b8c4608db9fcf3d359c
SHA512

e7c49f13ba5ba9c096c9c69746a2e908753ae3a2c03307c29d36a304023981a4bfc369776c1beff144c80dd7d4d4d47812054c86d4cbaddd8f665505c113af23
SSDEEP

24576:CHZqNW+LcY+MC/2nd7xTFgLO3pCVXB0byLVswFtuUoQhAdWXAYK/ZB6rDVoWhCLm:2ZgU8ZEOgVR0OJt1oZB6HV7QUumt05y

Score

10^/10

agenttesla quasar office collection credential_access discovery execution keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

https://api.telegram.org/bot5127674234:AAHGscjRk7JCDDCItFO4GPZfan-K7Hc89Z8/sendDocument

Extracted

Family

quasar

Version

1.4.0

Botnet

Office

3.83.129.253:4747

Mutex

fa713452-a1f8-4da7-a382-97f45b1b5335

Attributes

encryption_key
9C151EB9A0DBBD17722074A748153D56BF64F723
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Quasar Client Startup
subdirectory
SubDir

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
Agenttesla family
agenttesla
Quasar RAT
Quasar is an open source Remote Access Tool.
trojan spyware quasar
Quasar family
quasar

Quasar payload 1 IoCs

resource	yara_rule
behavioral2/memory/5096-48-0x0000000000400000-0x0000000000484000-memory.dmp	family_quasar

AgentTesla payload 1 IoCs

resource	yara_rule
behavioral2/memory/2756-39-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
3204	powershell.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	Google.exe

Executes dropped EXE 3 IoCs

pid	Process
1372	Google.exe
4312	notepad.exe
2756	notepad.exe

Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
spyware stealer

Data from Local System
T1005

Credentials in Registry
T1552.002
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
T1552.001
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
T1552.001
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003
Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

Credentials In Files
T1552.001

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	notepad.exe
Key opened	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	notepad.exe
Key opened	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	notepad.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\hmltog = "C:\\Users\\Admin\\AppData\\Roaming\\hmltog\\hmltog.exe"	notepad.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4312 set thread context of 2756	4312	notepad.exe	101
PID 1372 set thread context of 5096	1372	Google.exe	106

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Google.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
4240	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2756	notepad.exe
2756	notepad.exe
3204	powershell.exe
3204	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2756	notepad.exe
Token: SeDebugPrivilege	3204	powershell.exe
Token: SeDebugPrivilege	5096	RegSvcs.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
5096	RegSvcs.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
5096	RegSvcs.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
5096	RegSvcs.exe
2756	notepad.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 4736 wrote to memory of 1372	4736	WScript.exe	83
PID 4736 wrote to memory of 1372	4736	WScript.exe	83
PID 4736 wrote to memory of 1372	4736	WScript.exe	83
PID 4736 wrote to memory of 4312	4736	WScript.exe	84
PID 4736 wrote to memory of 4312	4736	WScript.exe	84
PID 4736 wrote to memory of 4312	4736	WScript.exe	84
PID 4312 wrote to memory of 2756	4312	notepad.exe	101
PID 4312 wrote to memory of 2756	4312	notepad.exe	101
PID 4312 wrote to memory of 2756	4312	notepad.exe	101
PID 4312 wrote to memory of 2756	4312	notepad.exe	101
PID 4312 wrote to memory of 2756	4312	notepad.exe	101
PID 4312 wrote to memory of 2756	4312	notepad.exe	101
PID 4312 wrote to memory of 2756	4312	notepad.exe	101
PID 4312 wrote to memory of 2756	4312	notepad.exe	101
PID 1372 wrote to memory of 3204	1372	Google.exe	102
PID 1372 wrote to memory of 3204	1372	Google.exe	102
PID 1372 wrote to memory of 3204	1372	Google.exe	102
PID 1372 wrote to memory of 4240	1372	Google.exe	104
PID 1372 wrote to memory of 4240	1372	Google.exe	104
PID 1372 wrote to memory of 4240	1372	Google.exe	104
PID 1372 wrote to memory of 5096	1372	Google.exe	106
PID 1372 wrote to memory of 5096	1372	Google.exe	106
PID 1372 wrote to memory of 5096	1372	Google.exe	106
PID 1372 wrote to memory of 5096	1372	Google.exe	106
PID 1372 wrote to memory of 5096	1372	Google.exe	106
PID 1372 wrote to memory of 5096	1372	Google.exe	106
PID 1372 wrote to memory of 5096	1372	Google.exe	106
PID 1372 wrote to memory of 5096	1372	Google.exe	106

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	notepad.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	notepad.exe

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\5b6d5819cc000436777cda63e9022fdd19b15a91451c7b8c4608db9fcf3d359c.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4736
- C:\Users\Admin\AppData\Local\Temp\Google.exe
  "C:\Users\Admin\AppData\Local\Temp\Google.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1372
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\xXKBkYDYj.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3204
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\xXKBkYDYj" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3D91.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4240
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SendNotifyMessage
    - Suspicious use of SetWindowsHookEx
    PID:5096
- C:\Users\Admin\AppData\Local\Temp\notepad.exe
  "C:\Users\Admin\AppData\Local\Temp\notepad.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4312
- - C:\Users\Admin\AppData\Local\Temp\notepad.exe
    "C:\Users\Admin\AppData\Local\Temp\notepad.exe"
    3⤵
    - Executes dropped EXE
    - Accesses Microsoft Outlook profiles
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - outlook_office_path
    - outlook_win_path
    PID:2756

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Credentials in Registry

T1552.002

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Google.exe

Filesize
1.0MB

MD5
8aba5e2140c382e5817452748c3ecb16

SHA1
492aa98cdd0b1e1665d7fe592d73fbb949247ea6

SHA256
f170610a1155a605f18bf116ac90c1d83f93d709d4dc40974da429af4352b9ee

SHA512
5ed010b690e4da41b1d6363a1c0f21003fb578b78a2c6bafba140083bde29a971bc31cdb2476abe1c5dbcc2289f8bd2e291d7c920467c7182038a792c3499b59

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ptlb05jx.xmw.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\notepad.exe

Filesize
757KB

MD5
4aa72ed512ffb2077978ef041dbe2e41

SHA1
35879349bdd7c3bca9ca97b07d6078faa7304871

SHA256
a9e6700d6bede169026ea3ff8ffc248454569610c10581e368b5834fb218141a

SHA512
d7f9c55f4431af459ee48212af9d9f2c0346ec598eaf03c6bcb31a32c33791e8ab7738b1dc833b333feba985fd99654b0b2cdf03c1e508c9f43876a3ac41e0b3

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp3D91.tmp

Filesize
1KB

MD5
74e38abefecf559c788136b8de3b740b

SHA1
f5881ab1d29d498fff742c591532605c4be3cf8b

SHA256
9e531ec072e8e5dde181049a9603caacf3139660659dbcb910384d864a0569e9

SHA512
27afc5323c011f0e4a9d679047e7fdac0183c4d9ff2d747e192ba4211237472dd159c3b332e9aceb124a0906067e80769e673f6a343ac83d4bfbeebbcb2ec27a

Download Submit
memory/1372-28-0x0000000005890000-0x000000000589A000-memory.dmp

Filesize
40KB

Download
memory/1372-23-0x00000000747E0000-0x0000000074F90000-memory.dmp

Filesize
7.7MB

Download
memory/1372-52-0x00000000747E0000-0x0000000074F90000-memory.dmp

Filesize
7.7MB

Download
memory/1372-27-0x00000000056E0000-0x0000000005772000-memory.dmp

Filesize
584KB

Download
memory/1372-29-0x0000000006890000-0x00000000068A2000-memory.dmp

Filesize
72KB

Download
memory/1372-30-0x0000000006940000-0x00000000069DC000-memory.dmp

Filesize
624KB

Download
memory/1372-24-0x0000000000AF0000-0x0000000000BF8000-memory.dmp

Filesize
1.0MB

Download
memory/1372-32-0x00000000747E0000-0x0000000074F90000-memory.dmp

Filesize
7.7MB

Download
memory/1372-47-0x0000000008520000-0x00000000085AA000-memory.dmp

Filesize
552KB

Download
memory/1372-34-0x00000000082E0000-0x00000000083A6000-memory.dmp

Filesize
792KB

Download
memory/2756-39-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2756-92-0x00000000054D0000-0x00000000054E8000-memory.dmp

Filesize
96KB

Download
memory/3204-44-0x0000000002CF0000-0x0000000002D26000-memory.dmp

Filesize
216KB

Download
memory/3204-88-0x0000000007C70000-0x0000000007C8A000-memory.dmp

Filesize
104KB

Download
memory/3204-80-0x0000000007800000-0x00000000078A3000-memory.dmp

Filesize
652KB

Download
memory/3204-86-0x0000000007B60000-0x0000000007B6E000-memory.dmp

Filesize
56KB

Download
memory/3204-46-0x00000000058C0000-0x0000000005EE8000-memory.dmp

Filesize
6.2MB

Download
memory/3204-87-0x0000000007B70000-0x0000000007B84000-memory.dmp

Filesize
80KB

Download
memory/3204-84-0x0000000007BB0000-0x0000000007C46000-memory.dmp

Filesize
600KB

Download
memory/3204-50-0x0000000005640000-0x0000000005662000-memory.dmp

Filesize
136KB

Download
memory/3204-51-0x00000000056E0000-0x0000000005746000-memory.dmp

Filesize
408KB

Download
memory/3204-85-0x0000000007B30000-0x0000000007B41000-memory.dmp

Filesize
68KB

Download
memory/3204-89-0x0000000007C50000-0x0000000007C58000-memory.dmp

Filesize
32KB

Download
memory/3204-62-0x0000000005FF0000-0x0000000006344000-memory.dmp

Filesize
3.3MB

Download
memory/3204-64-0x0000000006650000-0x000000000669C000-memory.dmp

Filesize
304KB

Download
memory/3204-63-0x0000000006600000-0x000000000661E000-memory.dmp

Filesize
120KB

Download
memory/3204-83-0x00000000079A0000-0x00000000079AA000-memory.dmp

Filesize
40KB

Download
memory/3204-82-0x0000000007930000-0x000000000794A000-memory.dmp

Filesize
104KB

Download
memory/3204-81-0x0000000007F70000-0x00000000085EA000-memory.dmp

Filesize
6.5MB

Download
memory/3204-69-0x0000000071870000-0x00000000718BC000-memory.dmp

Filesize
304KB

Download
memory/3204-68-0x0000000006BC0000-0x0000000006BF2000-memory.dmp

Filesize
200KB

Download
memory/3204-79-0x0000000006C00000-0x0000000006C1E000-memory.dmp

Filesize
120KB

Download
memory/4312-31-0x00000000747EE000-0x00000000747EF000-memory.dmp

Filesize
4KB

Download
memory/4312-36-0x0000000006B70000-0x0000000006BB4000-memory.dmp

Filesize
272KB

Download
memory/4312-35-0x00000000082A0000-0x0000000008306000-memory.dmp

Filesize
408KB

Download
memory/4312-33-0x0000000008180000-0x0000000008206000-memory.dmp

Filesize
536KB

Download
memory/4312-26-0x0000000005B80000-0x0000000006124000-memory.dmp

Filesize
5.6MB

Download
memory/4312-25-0x0000000000B20000-0x0000000000BE2000-memory.dmp

Filesize
776KB

Download
memory/4312-22-0x00000000747EE000-0x00000000747EF000-memory.dmp

Filesize
4KB

Download
memory/5096-67-0x0000000006380000-0x0000000006432000-memory.dmp

Filesize
712KB

Download
memory/5096-66-0x0000000006110000-0x0000000006160000-memory.dmp

Filesize
320KB

Download
memory/5096-65-0x0000000006560000-0x0000000006B78000-memory.dmp

Filesize
6.1MB

Download
memory/5096-48-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download