agenttesla | 1eff050baff83ae24c33483e5d79a58d2ca3370b8716332ac88c1c704338c3b1

Analysis

max time kernel
141s
max time network
136s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
15/05/2023, 06:35

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General

Target

846eb391b3c954776e1fed7d77fceb17.exe
Size

187KB
MD5

846eb391b3c954776e1fed7d77fceb17
SHA1

367a8e5bd925ab237b55cc757281110c8ac6c106
SHA256

1eff050baff83ae24c33483e5d79a58d2ca3370b8716332ac88c1c704338c3b1
SHA512

05f96f92a9aa7c58dc5f41632437d5f913be0d9ae1c46287b236c4b46dae9040db75bb1d52b1bf19f514c501c31b4223c1856f45bc4227c109dee1e448243a64
SSDEEP

3072:3fY/TU9fE9PEtu0bsRKJRSeuLK4/bnmH6khiS5ACzdCqWqHjcgi18+vnV6ZYEEbQ:vYa6I5nzun/bhhS/dtHjQ9vV6CL8

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan upx

Malware Config

Extracted

Family

agenttesla

https://api.telegram.org/bot2134979594:AAFk4QkrlHlt2a-q-EhIoHZBbzxSH0QxiBI/

Signatures

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

Loads dropped DLL 1 IoCs

pid	Process
2040	846eb391b3c954776e1fed7d77fceb17.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

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/1420-63-0x0000000000400000-0x0000000000444000-memory.dmp	upx
behavioral1/memory/1420-65-0x0000000000400000-0x0000000000444000-memory.dmp	upx
behavioral1/memory/1420-66-0x0000000000400000-0x0000000000444000-memory.dmp	upx
behavioral1/memory/1420-68-0x0000000000400000-0x0000000000444000-memory.dmp	upx

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	846eb391b3c954776e1fed7d77fceb17.exe
Key opened	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	846eb391b3c954776e1fed7d77fceb17.exe
Key opened	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	846eb391b3c954776e1fed7d77fceb17.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-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Windows\CurrentVersion\Run\vfoktoxhdmvrb = "C:\\Users\\Admin\\AppData\\Roaming\\vbkgpytdyirnw\\gclhqa.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\846eb391b3c954776e1fed7d77fceb17.exe\""	846eb391b3c954776e1fed7d77fceb17.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.

flow	ioc
3	api.ipify.org
4	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2040 set thread context of 1420	2040	846eb391b3c954776e1fed7d77fceb17.exe	28

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

System Information Discovery
T1082

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2040	846eb391b3c954776e1fed7d77fceb17.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1420	846eb391b3c954776e1fed7d77fceb17.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2040 wrote to memory of 1420	2040	846eb391b3c954776e1fed7d77fceb17.exe	28
PID 2040 wrote to memory of 1420	2040	846eb391b3c954776e1fed7d77fceb17.exe	28
PID 2040 wrote to memory of 1420	2040	846eb391b3c954776e1fed7d77fceb17.exe	28
PID 2040 wrote to memory of 1420	2040	846eb391b3c954776e1fed7d77fceb17.exe	28
PID 2040 wrote to memory of 1420	2040	846eb391b3c954776e1fed7d77fceb17.exe	28

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	846eb391b3c954776e1fed7d77fceb17.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	846eb391b3c954776e1fed7d77fceb17.exe

C:\Users\Admin\AppData\Local\Temp\846eb391b3c954776e1fed7d77fceb17.exe
"C:\Users\Admin\AppData\Local\Temp\846eb391b3c954776e1fed7d77fceb17.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2040
- C:\Users\Admin\AppData\Local\Temp\846eb391b3c954776e1fed7d77fceb17.exe
  "C:\Users\Admin\AppData\Local\Temp\846eb391b3c954776e1fed7d77fceb17.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:1420

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

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\nsyCC0.tmp\anzlf.dll

Filesize
5KB

MD5
85995e2504cafcdd4d1d196f517df97d

SHA1
0a605a867a1e59002d425be5a442baf313505ea1

SHA256
364a086887c06611e125051653df854fe4c734ea13caaf448b9dd59ae2c9ad87

SHA512
a9326f6c0f01c979ec5223a7cb32944960b9cb04a2ec06434dbd480a741dd8fddbff2ed57e719ffe825f9c9693234daaf33cc5dcf36ce4c7eb8fc0be87d2f298

Download Submit
memory/1420-63-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/1420-65-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/1420-66-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/1420-67-0x0000000000540000-0x0000000000570000-memory.dmp

Filesize
192KB

Download
memory/1420-68-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/1420-69-0x0000000004610000-0x0000000004650000-memory.dmp

Filesize
256KB

Download