agenttesla | 09b361c61bcd3e3c9a8eda0a5260d953dd3bd749dd6d037d26cdfec0474a972e

General

Target

109a25a65dcb12435377b0f9f4159f4c.js
Size

403KB
MD5

109a25a65dcb12435377b0f9f4159f4c
SHA1

1579ca605a83527a8befe3edeaff3d4feaa293d4
SHA256

1deb0b650909a1e7895b5b8f315428ac66353161513e5de9261c7477c7bdc386
SHA512

a268722c75135d95ffbbba8141154a571d10ac5662348e314f7dcc2c67f36d43c8a9a89a4787d9ddeb8960503d6a50ded415b95c795e8c6c426b9aa6f09e0e95
SSDEEP

6144:Rcem0BIMD9F+gX64GsJI1s2eVawLGkIHEC6kOnylYYADJKV91XFzza:eeTIiGA6/sG11wLGdbAMV9a

Score

10^/10

agenttesla vjw0rm collection keylogger persistence spyware stealer trojan worm

Malware Config

Extracted

Credentials

Protocol: smtp
Host:
server240.web-hosting.com
Port:
587
Username:
[email protected]
Password:
Success4sure2day10@

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
server240.web-hosting.com
Port:
587
Username:
[email protected]
Password:
Success4sure2day10@
Email To:
[email protected]

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

Blocklisted process makes network request 15 IoCs

flow	pid	Process
4	1716	wscript.exe
11	1716	wscript.exe
12	1716	wscript.exe
15	1716	wscript.exe
16	1716	wscript.exe
17	1716	wscript.exe
19	1716	wscript.exe
20	1716	wscript.exe
21	1716	wscript.exe
23	1716	wscript.exe
24	1716	wscript.exe
25	1716	wscript.exe
27	1716	wscript.exe
28	1716	wscript.exe
29	1716	wscript.exe

Executes dropped EXE 1 IoCs

pid	Process
660	anew4FUDcrypt.exe

Drops startup file 2 IoCs

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

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	anew4FUDcrypt.exe
Key opened	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	anew4FUDcrypt.exe
Key opened	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	anew4FUDcrypt.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-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\audio_dg = "C:\\Users\\Admin\\AppData\\Roaming\\audio_dg\\audio_dg.exe"	anew4FUDcrypt.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
5	api.ipify.org
6	api.ipify.org

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 3 IoCs

pid	Process
660	anew4FUDcrypt.exe
660	anew4FUDcrypt.exe
660	anew4FUDcrypt.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	660	anew4FUDcrypt.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
660	anew4FUDcrypt.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1260 wrote to memory of 1716	1260	wscript.exe	28
PID 1260 wrote to memory of 1716	1260	wscript.exe	28
PID 1260 wrote to memory of 1716	1260	wscript.exe	28
PID 1260 wrote to memory of 660	1260	wscript.exe	29
PID 1260 wrote to memory of 660	1260	wscript.exe	29
PID 1260 wrote to memory of 660	1260	wscript.exe	29
PID 1260 wrote to memory of 660	1260	wscript.exe	29

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	anew4FUDcrypt.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	anew4FUDcrypt.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\109a25a65dcb12435377b0f9f4159f4c.js
1⤵
- Suspicious use of WriteProcessMemory
PID:1260
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\vxvVKrKGEA.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  PID:1716
- C:\Users\Admin\AppData\Local\Temp\anew4FUDcrypt.exe
  "C:\Users\Admin\AppData\Local\Temp\anew4FUDcrypt.exe"
  2⤵
  - Executes dropped EXE
  - Accesses Microsoft Outlook profiles
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:660

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\anew4FUDcrypt.exe

Filesize
218KB

MD5
d38c08505b96562261c3920265bb4f97

SHA1
7b7bb2838e3e04d412fdde726b351ac0a6eaba80

SHA256
83a0e9ffbf7ec5895ec2062597c34e6e88cc48a608896e2722b78677e2e04ea9

SHA512
9eac7bb3dac64db0aa5c90d6609545fb1b2c07b7721c01046db11742e4097e9c6b842dadd9e97627e6f9df73abe98494e2616467a339051fc9cf8fc00df0b4d8

Download Submit
C:\Users\Admin\AppData\Local\Temp\anew4FUDcrypt.exe

Filesize
218KB

MD5
d38c08505b96562261c3920265bb4f97

SHA1
7b7bb2838e3e04d412fdde726b351ac0a6eaba80

SHA256
83a0e9ffbf7ec5895ec2062597c34e6e88cc48a608896e2722b78677e2e04ea9

SHA512
9eac7bb3dac64db0aa5c90d6609545fb1b2c07b7721c01046db11742e4097e9c6b842dadd9e97627e6f9df73abe98494e2616467a339051fc9cf8fc00df0b4d8

Download Submit
C:\Users\Admin\AppData\Roaming\vxvVKrKGEA.js

Filesize
6KB

MD5
3014bf13c6cb1ca0518562a0a68655a0

SHA1
23e817c073384a89933a01ac61b64f6d10d9fcc3

SHA256
a93fc20448edf04a1a6bd2f016767370aaf970de1db999f44908bcedb76af474

SHA512
c12f9359ba564f0a0fefb44211403c055e82aa35e92f91208adc0ad19516f161d8cc5a34d709525a25f785f7889aadd8445cd95a63e9b1a56d6c6c9892095b4d

Download Submit
memory/660-61-0x0000000000E60000-0x0000000000E9C000-memory.dmp

Filesize
240KB

Download
memory/660-62-0x0000000075291000-0x0000000075293000-memory.dmp

Filesize
8KB

Download
memory/1260-54-0x000007FEFB8E1000-0x000007FEFB8E3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads