agenttesla | da1e26831c4ee7c90829f22362c3127b05816318a151bee3a9b7a8cb9ddce39f

General

Target

Scan docs.js
Size

695KB
MD5

891dc2bbf1be950a27098486168919b5
SHA1

1528b59f9783c8f9e58b5f0f8f6090cbfcf864a0
SHA256

da1e26831c4ee7c90829f22362c3127b05816318a151bee3a9b7a8cb9ddce39f
SHA512

93e602f9925d6ae35c2edeb4b9edd88bd6c7e3d7d885a536f117a3eaadf866f5fce9ee5b528624c4db9450dd3f49cf97171ff05cbe37a15aec5603349dfb0ff6

Score

10^/10

agenttesla vjw0rm collection keylogger persistence spyware stealer suricata trojan worm

Malware Config

Extracted

Credentials

Protocol: smtp
Host:
mail.freighttrainfleet.com
Port:
587
Username:
[email protected]
Password:
9b52731M*

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.freighttrainfleet.com
Port:
587
Username:
[email protected]
Password:
9b52731M*

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm vjw0rm
suricata: ET MALWARE AgentTesla Exfil Via SMTP
suricata: ET MALWARE AgentTesla Exfil Via SMTP
suricata

Blocklisted process makes network request 16 IoCs

Processes:

wscript.exe

flow	pid	process
4	848	wscript.exe
7	848	wscript.exe
8	848	wscript.exe
10	848	wscript.exe
12	848	wscript.exe
13	848	wscript.exe
15	848	wscript.exe
16	848	wscript.exe
17	848	wscript.exe
19	848	wscript.exe
20	848	wscript.exe
21	848	wscript.exe
23	848	wscript.exe
24	848	wscript.exe
25	848	wscript.exe
27	848	wscript.exe

Executes dropped EXE 1 IoCs

Processes:

Net4 Origin.exe

pid process

1236 Net4 Origin.exe

pid	process
1236	Net4 Origin.exe

Drops startup file 2 IoCs

Processes:

wscript.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\GQGruPODld.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\GQGruPODld.js	wscript.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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

Net4 Origin.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Net4 Origin.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Net4 Origin.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Net4 Origin.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

wscript.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows\CurrentVersion\Run\YVBPFHTJIQ = "\"C:\\Users\\Admin\\AppData\\Roaming\\GQGruPODld.js\""	wscript.exe

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

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

Net4 Origin.exe

pid process

1236 Net4 Origin.exe
1236 Net4 Origin.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Net4 Origin.exe

description pid process

Token: SeDebugPrivilege 1236 Net4 Origin.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Net4 Origin.exe

pid process

1236 Net4 Origin.exe

pid	process
1236	Net4 Origin.exe
1236	Net4 Origin.exe

description	pid	process
Token: SeDebugPrivilege	1236	Net4 Origin.exe

pid	process
1236	Net4 Origin.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 1652 wrote to memory of 848	1652	wscript.exe	wscript.exe
PID 1652 wrote to memory of 848	1652	wscript.exe	wscript.exe
PID 1652 wrote to memory of 848	1652	wscript.exe	wscript.exe
PID 1652 wrote to memory of 1236	1652	wscript.exe	Net4 Origin.exe
PID 1652 wrote to memory of 1236	1652	wscript.exe	Net4 Origin.exe
PID 1652 wrote to memory of 1236	1652	wscript.exe	Net4 Origin.exe
PID 1652 wrote to memory of 1236	1652	wscript.exe	Net4 Origin.exe

outlook_office_path 1 IoCs

Processes:

Net4 Origin.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Net4 Origin.exe

outlook_win_path 1 IoCs

Processes:

Net4 Origin.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Net4 Origin.exe

C:\Windows\system32\wscript.exe
wscript.exe "C:\Users\Admin\AppData\Local\Temp\Scan docs.js"
1⤵
- Suspicious use of WriteProcessMemory
PID:1652

C:\Windows\System32\wscript.exe
"C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\GQGruPODld.js"
2⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:848

C:\Users\Admin\AppData\Local\Temp\Net4 Origin.exe
"C:\Users\Admin\AppData\Local\Temp\Net4 Origin.exe"
2⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
PID:1236

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\Net4 Origin.exe
Filesize
209KB

MD5
511f723efd20136c1bf50e4c28d7894b

SHA1
b01840d6fba0e8842f4dcc5077d577a2082f65ca

SHA256
639be5d755e8d6783e0e959d782901e0513f1c6663515bd7246e4f5c7f7786db

SHA512
5518a071575eee72680e50d9331d13acb200da8154bd8739f111ee33a9192358fef6b51e6645a6df3ee6d94ef1af5ef7767b29474aa2b9153f78d2c421ac4546

Download Submit
C:\Users\Admin\AppData\Local\Temp\Net4 Origin.exe
Filesize
209KB

MD5
511f723efd20136c1bf50e4c28d7894b

SHA1
b01840d6fba0e8842f4dcc5077d577a2082f65ca

SHA256
639be5d755e8d6783e0e959d782901e0513f1c6663515bd7246e4f5c7f7786db

SHA512
5518a071575eee72680e50d9331d13acb200da8154bd8739f111ee33a9192358fef6b51e6645a6df3ee6d94ef1af5ef7767b29474aa2b9153f78d2c421ac4546

Download Submit
C:\Users\Admin\AppData\Roaming\GQGruPODld.js
Filesize
117KB

MD5
27327ec3f126ff5a0fbe91a4d697e0ea

SHA1
189db856bfb734d30f12335682dd5fc775949b8f

SHA256
aab53233a4cbe4f4cd4b24caa118862115ccb3a4faec1b31fff9b87f7380fab1

SHA512
e7e37cabecfc3e14929d8371579b5c121bbbd01c17d43c9902f52facd06bf38087d69f651722ed6eafde46db3123fd5032f16e5156bcb4f87c33df04186fbf1e

Download Submit
memory/848-55-0x0000000000000000-mapping.dmp

Download
memory/1236-57-0x0000000000000000-mapping.dmp

Download
memory/1236-61-0x0000000001140000-0x000000000117A000-memory.dmp

Filesize
232KB

Download
memory/1236-62-0x0000000076461000-0x0000000076463000-memory.dmp

Filesize
8KB

Download
memory/1652-54-0x000007FEFC4E1000-0x000007FEFC4E3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads