agenttesla | 3865bbd46883751b05019a0479e8367cbc91d14e04ad915a79f6408df78d5cad

Analysis

max time kernel
144s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
15/06/2023, 12:45

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General

Target
07432499.js
Size 3.4MB
Sample230615-py1vgagh74
SHA256 3865bbd46883751b05019a0479e8367cbc91d14e04ad915a79f6408df78d5cad
MD5 3b959fc03975f45aa625b6a1f43ad1e7
SHA1 108be164a2b0419fa90dbfb84e20c43148786e31
SHA512 4ad6850c0da013ed3538d50f99e4b79ecf7c748f7f4a40c52a8ec37c1e9845871e82a9edb914b339f2e4a49f5e034a30ae4462bc624752df3c3f3b2c8fd95a3d
SSDEEP 24576:vJTSZkTHrXCowam0gGHmjSGszTwn3ztdCPBItPbQTQgIO34L3HMWcscZq4KZ4YMS:HE5
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

agenttesla vjw0rm collection keylogger spyware stealer trojan worm

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
smtp.rzr0ngtai.com
Port
587
Username
[email protected]
Password
bhYdc$I2
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 12 IoCs

flow	pid	Process
4	4112	wscript.exe
7	4112	wscript.exe
24	4112	wscript.exe
30	4112	wscript.exe
60	4112	wscript.exe
63	4112	wscript.exe
66	4112	wscript.exe
67	4112	wscript.exe
70	4112	wscript.exe
71	4112	wscript.exe
74	4112	wscript.exe
75	4112	wscript.exe

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-1-5-21-2275444769-3691835758-4097679484-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
1664	biin.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-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	biin.exe
Key opened	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	biin.exe
Key opened	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	biin.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1664	biin.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1664	biin.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2144 wrote to memory of 4112	2144	wscript.exe	85
PID 2144 wrote to memory of 4112	2144	wscript.exe	85
PID 2144 wrote to memory of 1664	2144	wscript.exe	86
PID 2144 wrote to memory of 1664	2144	wscript.exe	86
PID 2144 wrote to memory of 1664	2144	wscript.exe	86

outlook_office_path 1 IoCs

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

outlook_win_path 1 IoCs

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	biin.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\07432499.js
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2144
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\ntrHCBLBIT.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  PID:4112
- C:\Users\Admin\AppData\Local\Temp\biin.exe
  "C:\Users\Admin\AppData\Local\Temp\biin.exe"
  2⤵
  - Executes dropped EXE
  - Accesses Microsoft Outlook profiles
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:1664

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

Command and Control

Exfiltration

Impact

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Downloads

biin.exe

Path C:\Users\Admin\AppData\Local\Temp\biin.exe
Size 164KB
SHA256 92e9f60bafc19843eb809da1226e5e7af654e1acd206a4b87b440efad7ff1278
MD5 ed048769b00f1afc372622b366afbd8e
SHA1 5d96ef6fea3d3705ebf2d0c09daa9fe54a11e134
SHA512 8380cbb4de8e1b1f59eb9ac7eff98a1a44d9611f08507caafb850355b75bb554d9c1a51cf20293544e4ddc823410d0756b5aab188e0810476dd4d9bb33796410
SSDEEP 3072:U90h0xo0d8QVUM1/f2APpmrgLjEG9LZ52XIX5:EuS3/3nxZvT2YX
MD5 SHA1 SHA512 SSDEEP

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biin.exe

Path C:\Users\Admin\AppData\Local\Temp\biin.exe
Size 164KB
SHA256 92e9f60bafc19843eb809da1226e5e7af654e1acd206a4b87b440efad7ff1278
MD5 ed048769b00f1afc372622b366afbd8e
SHA1 5d96ef6fea3d3705ebf2d0c09daa9fe54a11e134
SHA512 8380cbb4de8e1b1f59eb9ac7eff98a1a44d9611f08507caafb850355b75bb554d9c1a51cf20293544e4ddc823410d0756b5aab188e0810476dd4d9bb33796410
SSDEEP 3072:U90h0xo0d8QVUM1/f2APpmrgLjEG9LZ52XIX5:EuS3/3nxZvT2YX
MD5 SHA1 SHA512 SSDEEP

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biin.exe

Path C:\Users\Admin\AppData\Local\Temp\biin.exe
Size 164KB
SHA256 92e9f60bafc19843eb809da1226e5e7af654e1acd206a4b87b440efad7ff1278
MD5 ed048769b00f1afc372622b366afbd8e
SHA1 5d96ef6fea3d3705ebf2d0c09daa9fe54a11e134
SHA512 8380cbb4de8e1b1f59eb9ac7eff98a1a44d9611f08507caafb850355b75bb554d9c1a51cf20293544e4ddc823410d0756b5aab188e0810476dd4d9bb33796410
SSDEEP 3072:U90h0xo0d8QVUM1/f2APpmrgLjEG9LZ52XIX5:EuS3/3nxZvT2YX
MD5 SHA1 SHA512 SSDEEP

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ntrHCBLBIT.js

Path C:\Users\Admin\AppData\Roaming\ntrHCBLBIT.js
Size 346KB
SHA256 f0859092ba6f050b746556c0957dfc4d0faa35ffade29ad199d028cb6e14c9bc
MD5 1c50a0279d38af4da4d39a9287096ca6
SHA1 767180b03827b30622691670f0814f40f47ccfe8
SHA512 2d30a9f332f5a38bd2551986bd976d6cf9a75ed2600a76de48113e2c840ebf831624bcef801c74623c33429f56efbbdcf0b73528661ce82207f808cfb35e2eaa
SSDEEP 6144:eQfPBx5q0sQ1o7rsbHC01mDBpNW2mTMSbpuV860:eQ3B7qgpB
MD5 SHA1 SHA512 SSDEEP

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memory/1664-149-0x0000000004AD0000-0x0000000004B36000-memory.dmp

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memory/1664-148-0x0000000005010000-0x00000000055B4000-memory.dmp

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memory/1664-147-0x0000000000030000-0x0000000000060000-memory.dmp

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memory/1664-150-0x00000000049E0000-0x00000000049F0000-memory.dmp

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memory/1664-151-0x0000000005A60000-0x0000000005AF2000-memory.dmp

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memory/1664-152-0x0000000005A50000-0x0000000005A5A000-memory.dmp

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memory/1664-153-0x0000000005E00000-0x0000000005E50000-memory.dmp

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memory/1664-154-0x0000000006150000-0x0000000006312000-memory.dmp

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memory/1664-155-0x00000000049E0000-0x00000000049F0000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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