agenttesla | e867bb597f0b2dc98057b12a90fcef9eca9e78ae1081370f89593f0d210a5acb

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
28-03-2023 09:28

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General

Target

vbc.exe
Size

790KB
MD5

425124613fb9b4daa38460652fd75e38
SHA1

542aaee07bd064ec6384685fa9ce9299915fb680
SHA256

e867bb597f0b2dc98057b12a90fcef9eca9e78ae1081370f89593f0d210a5acb
SHA512

915a482bd97fa5ac8e388b46bb89e011742595a56902c65fbba0edb1b218a1b600a31c7bf3cc2735c02f3f9b6d59995ebf9203e2701ad8cd03c7a2316e1208dd
SSDEEP

24576:ImVZ9mZojJlboENPVbI/4WgyJMLpLJwK:93sojkEP1LWTep+K

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

https://api.telegram.org/bot5663632223:AAG5KHZDs7KWoaqTYx3lSyFlOdfD9vGegQo/

Signatures

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

Processes:

vbc.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Control Panel\International\Geo\Nation vbc.exe
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
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Control Panel\International\Geo\Nation	vbc.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

vbc.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	vbc.exe
Key opened	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	vbc.exe
Key opened	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	vbc.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

vbc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\eubJfun = "C:\\Users\\Admin\\AppData\\Roaming\\eubJfun\\eubJfun.exe"	vbc.exe

Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

24 api.ipify.org
25 api.ipify.org
Suspicious use of SetThreadContext 1 IoCs

Processes:

vbc.exe

description pid process target process

PID 1900 set thread context of 368 1900 vbc.exe vbc.exe
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

Processes:

schtasks.exe

pid process

524 schtasks.exe
Suspicious behavior: EnumeratesProcesses 10 IoCs

Processes:

vbc.exepowershell.exe

pid process

1900 vbc.exe
1900 vbc.exe
1900 vbc.exe
1900 vbc.exe
1900 vbc.exe
1900 vbc.exe
1900 vbc.exe
1900 vbc.exe
376 powershell.exe
376 powershell.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vbc.exepowershell.exevbc.exe

description pid process

Token: SeDebugPrivilege 1900 vbc.exe
Token: SeDebugPrivilege 376 powershell.exe
Token: SeDebugPrivilege 368 vbc.exe

flow	ioc
24	api.ipify.org
25	api.ipify.org

description	pid	process	target process
PID 1900 set thread context of 368	1900	vbc.exe	vbc.exe

pid	process
524	schtasks.exe

pid	process
1900	vbc.exe
1900	vbc.exe
1900	vbc.exe
1900	vbc.exe
1900	vbc.exe
1900	vbc.exe
1900	vbc.exe
1900	vbc.exe
376	powershell.exe
376	powershell.exe

description	pid	process
Token: SeDebugPrivilege	1900	vbc.exe
Token: SeDebugPrivilege	376	powershell.exe
Token: SeDebugPrivilege	368	vbc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

vbc.exe

description	pid	process	target process
PID 1900 wrote to memory of 376	1900	vbc.exe	powershell.exe
PID 1900 wrote to memory of 376	1900	vbc.exe	powershell.exe
PID 1900 wrote to memory of 376	1900	vbc.exe	powershell.exe
PID 1900 wrote to memory of 524	1900	vbc.exe	schtasks.exe
PID 1900 wrote to memory of 524	1900	vbc.exe	schtasks.exe
PID 1900 wrote to memory of 524	1900	vbc.exe	schtasks.exe
PID 1900 wrote to memory of 5040	1900	vbc.exe	vbc.exe
PID 1900 wrote to memory of 5040	1900	vbc.exe	vbc.exe
PID 1900 wrote to memory of 5040	1900	vbc.exe	vbc.exe
PID 1900 wrote to memory of 2612	1900	vbc.exe	vbc.exe
PID 1900 wrote to memory of 2612	1900	vbc.exe	vbc.exe
PID 1900 wrote to memory of 2612	1900	vbc.exe	vbc.exe
PID 1900 wrote to memory of 4996	1900	vbc.exe	vbc.exe
PID 1900 wrote to memory of 4996	1900	vbc.exe	vbc.exe
PID 1900 wrote to memory of 4996	1900	vbc.exe	vbc.exe
PID 1900 wrote to memory of 368	1900	vbc.exe	vbc.exe
PID 1900 wrote to memory of 368	1900	vbc.exe	vbc.exe
PID 1900 wrote to memory of 368	1900	vbc.exe	vbc.exe
PID 1900 wrote to memory of 368	1900	vbc.exe	vbc.exe
PID 1900 wrote to memory of 368	1900	vbc.exe	vbc.exe
PID 1900 wrote to memory of 368	1900	vbc.exe	vbc.exe
PID 1900 wrote to memory of 368	1900	vbc.exe	vbc.exe
PID 1900 wrote to memory of 368	1900	vbc.exe	vbc.exe

outlook_office_path 1 IoCs

Processes:

vbc.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	vbc.exe

outlook_win_path 1 IoCs

Processes:

vbc.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	vbc.exe

C:\Users\Admin\AppData\Local\Temp\vbc.exe
"C:\Users\Admin\AppData\Local\Temp\vbc.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1900

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\RnzqvRAlVCaDTf.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:376

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\RnzqvRAlVCaDTf" /XML "C:\Users\Admin\AppData\Local\Temp\tmp32A9.tmp"
2⤵
- Creates scheduled task(s)
PID:524

C:\Users\Admin\AppData\Local\Temp\vbc.exe
"C:\Users\Admin\AppData\Local\Temp\vbc.exe"
2⤵
PID:5040

C:\Users\Admin\AppData\Local\Temp\vbc.exe
"C:\Users\Admin\AppData\Local\Temp\vbc.exe"
2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:368

C:\Users\Admin\AppData\Local\Temp\vbc.exe
"C:\Users\Admin\AppData\Local\Temp\vbc.exe"
2⤵
PID:4996

C:\Users\Admin\AppData\Local\Temp\vbc.exe
"C:\Users\Admin\AppData\Local\Temp\vbc.exe"
2⤵
PID:2612

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

T1064

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Scripting

T1064

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\vbc.exe.log
Filesize
1KB

MD5
b7b9acb869ccc7f7ecb5304ec0384dee

SHA1
6a90751c95817903ee833d59a0abbef425a613b3

SHA256
8cb00a15cd942a1861c573d86d6fb430512c8e2f80f6349f48b16b8709ca7aa4

SHA512
7bec881ac5f59ac26f1be1e7e26d63f040c06369de10c1c246e531a4395d27c335d9acc647ecdedb48ed37bdc2dc405a4cfc11762e1c00659a49be259eaf8764

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vdlg035q.jn0.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp32A9.tmp
Filesize
1KB

MD5
f7f659792ed9eb5259ad78b249d04f29

SHA1
7a5d543de8e37787316c120cf82813b6c6236cdc

SHA256
b29e1cc45f9203ee1aff3f05c1fe49ad1cec1e86ae925ad982ee8be16210a4bd

SHA512
847df9d61650d88ae80c9d0f77997daa2e05012ec36d433ce9a9aebe3e6fcde2e39048b842cc98d96b20ee31729d675541bb45542cfb9f6c3dc13ee843c92eea

Download Submit
memory/368-162-0x0000000005790000-0x00000000057A0000-memory.dmp

Filesize
64KB

Download
memory/368-147-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/368-185-0x0000000007580000-0x0000000007742000-memory.dmp

Filesize
1.8MB

Download
memory/368-184-0x0000000007360000-0x00000000073B0000-memory.dmp

Filesize
320KB

Download
memory/368-192-0x0000000005790000-0x00000000057A0000-memory.dmp

Filesize
64KB

Download
memory/368-150-0x0000000005850000-0x00000000058B6000-memory.dmp

Filesize
408KB

Download
memory/376-182-0x0000000007660000-0x000000000767A000-memory.dmp

Filesize
104KB

Download
memory/376-188-0x00000000079A0000-0x00000000079BA000-memory.dmp

Filesize
104KB

Download
memory/376-163-0x0000000004F00000-0x0000000004F10000-memory.dmp

Filesize
64KB

Download
memory/376-189-0x0000000007980000-0x0000000007988000-memory.dmp

Filesize
32KB

Download
memory/376-164-0x0000000004F00000-0x0000000004F10000-memory.dmp

Filesize
64KB

Download
memory/376-151-0x0000000005510000-0x0000000005532000-memory.dmp

Filesize
136KB

Download
memory/376-161-0x0000000005DA0000-0x0000000005E06000-memory.dmp

Filesize
408KB

Download
memory/376-165-0x0000000006350000-0x000000000636E000-memory.dmp

Filesize
120KB

Download
memory/376-144-0x0000000004DC0000-0x0000000004DF6000-memory.dmp

Filesize
216KB

Download
memory/376-186-0x00000000078E0000-0x0000000007976000-memory.dmp

Filesize
600KB

Download
memory/376-146-0x0000000005540000-0x0000000005B68000-memory.dmp

Filesize
6.2MB

Download
memory/376-166-0x0000000004F00000-0x0000000004F10000-memory.dmp

Filesize
64KB

Download
memory/376-168-0x0000000006920000-0x0000000006952000-memory.dmp

Filesize
200KB

Download
memory/376-169-0x0000000070680000-0x00000000706CC000-memory.dmp

Filesize
304KB

Download
memory/376-179-0x00000000068E0000-0x00000000068FE000-memory.dmp

Filesize
120KB

Download
memory/376-180-0x0000000007CA0000-0x000000000831A000-memory.dmp

Filesize
6.5MB

Download
memory/376-187-0x0000000007890000-0x000000000789E000-memory.dmp

Filesize
56KB

Download
memory/376-181-0x000000007F9B0000-0x000000007F9C0000-memory.dmp

Filesize
64KB

Download
memory/376-183-0x00000000076D0000-0x00000000076DA000-memory.dmp

Filesize
40KB

Download
memory/1900-133-0x0000000000250000-0x000000000031C000-memory.dmp

Filesize
816KB

Download
memory/1900-138-0x0000000004E50000-0x0000000004E60000-memory.dmp

Filesize
64KB

Download
memory/1900-139-0x0000000006DD0000-0x0000000006E6C000-memory.dmp

Filesize
624KB

Download
memory/1900-137-0x0000000004BC0000-0x0000000004BCA000-memory.dmp

Filesize
40KB

Download
memory/1900-134-0x00000000050E0000-0x0000000005684000-memory.dmp

Filesize
5.6MB

Download
memory/1900-136-0x0000000004E50000-0x0000000004E60000-memory.dmp

Filesize
64KB

Download
memory/1900-135-0x0000000004BD0000-0x0000000004C62000-memory.dmp

Filesize
584KB

Download