agenttesla | 010729194c08b557dc260c821d07d35b2c8fdfbaa18ff27c7f1f2fe233850fd1

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
13/06/2024, 14:17

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
010729194c08b557dc260c821d07d35b2c8fdfbaa18ff27c7f1f2fe233850fd1.vbs
Size 3.2MB
Sample240613-rl2bkssdmc
SHA256 010729194c08b557dc260c821d07d35b2c8fdfbaa18ff27c7f1f2fe233850fd1
MD5 3a3f7a4a8b7ea91bd05523cb83456441
SHA1 20bbbe54a25cced1f74f34521918effd6aa5877d
SHA512 c86b406a756a9f5ad7f1368e741687af94e12ee258fc42c99c9f14d6118ded6976a09e7d7fa1840d17c72d827a900760bf69dceb774798db1a3e86fa293ba0ed
SSDEEP 6144:0BRlhwEEM38fLACxm31KtNnzZnZjIylZLImb:0zYuIN/flHb
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

agenttesla wshrat execution keylogger persistence spyware stealer trojan

Malware Config

Extracted

Credentials

Protocol
smtp
Host
smtp.gmail.com
Port
587
Username
[email protected]
Password
bizr usjt guapiims

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
smtp.gmail.com
Port
587
Username
[email protected]
Password
bizr usjt guapiims
Email to
[email protected]

Extracted

Family

wshrat

http://chongmei33.publicvm.com:7045

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
WSHRAT
WSHRAT is a variant of Houdini worm and has vbs and js variants.
trojan wshrat

Blocklisted process makes network request 23 IoCs

flow	pid	Process
23	4480	WScript.exe
25	4480	WScript.exe
32	4480	WScript.exe
33	4480	WScript.exe
34	4480	WScript.exe
40	4480	WScript.exe
46	4480	WScript.exe
47	4480	WScript.exe
48	4480	WScript.exe
49	4480	WScript.exe
54	4480	WScript.exe
55	4480	WScript.exe
56	4480	WScript.exe
57	4480	WScript.exe
60	4480	WScript.exe
64	4480	WScript.exe
65	4480	WScript.exe
66	4480	WScript.exe
67	4480	WScript.exe
68	4480	WScript.exe
69	4480	WScript.exe
70	4480	WScript.exe
71	4480	WScript.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-3169499791-3545231813-3156325206-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\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\010729194c08b557dc260c821d07d35b2c8fdfbaa18ff27c7f1f2fe233850fd1.vbs	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\010729194c08b557dc260c821d07d35b2c8fdfbaa18ff27c7f1f2fe233850fd1.vbs	WScript.exe

Executes dropped EXE 2 IoCs

pid	Process
4500	Gcp.exe
1612	kl-plugin.exe

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
T1552.001
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
T1552.001

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\010729194c08b557dc260c821d07d35b2c8fdfbaa18ff27c7f1f2fe233850fd1 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\010729194c08b557dc260c821d07d35b2c8fdfbaa18ff27c7f1f2fe233850fd1.vbs\""	WScript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\010729194c08b557dc260c821d07d35b2c8fdfbaa18ff27c7f1f2fe233850fd1 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\010729194c08b557dc260c821d07d35b2c8fdfbaa18ff27c7f1f2fe233850fd1.vbs\""	WScript.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
22	ip-api.com

Command and Scripting Interpreter: JavaScript 1 TTPs
execution

JavaScript
T1059.007
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
5080	taskkill.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000_Classes\Local Settings	WScript.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4500	Gcp.exe
4500	Gcp.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4500	Gcp.exe
Token: SeDebugPrivilege	5080	taskkill.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1612	kl-plugin.exe
1612	kl-plugin.exe
4500	Gcp.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4480 wrote to memory of 2388	4480	WScript.exe	85
PID 4480 wrote to memory of 2388	4480	WScript.exe	85
PID 2388 wrote to memory of 4500	2388	WScript.exe	87
PID 2388 wrote to memory of 4500	2388	WScript.exe	87
PID 2388 wrote to memory of 4500	2388	WScript.exe	87
PID 4480 wrote to memory of 1224	4480	WScript.exe	88
PID 4480 wrote to memory of 1224	4480	WScript.exe	88
PID 1224 wrote to memory of 5080	1224	cmd.exe	90
PID 1224 wrote to memory of 5080	1224	cmd.exe	90
PID 4480 wrote to memory of 1612	4480	WScript.exe	91
PID 4480 wrote to memory of 1612	4480	WScript.exe	91
PID 4480 wrote to memory of 1612	4480	WScript.exe	91

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\010729194c08b557dc260c821d07d35b2c8fdfbaa18ff27c7f1f2fe233850fd1.vbs"
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4480
- C:\Windows\System32\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\icon-smile-kl.js"
  2⤵
  - Checks computer location settings
  - Suspicious use of WriteProcessMemory
  PID:2388
- - C:\Users\Admin\AppData\Local\Temp\Gcp.exe
    "C:\Users\Admin\AppData\Local\Temp\Gcp.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:4500
- C:\Windows\system32\cmd.exe
  "C:\Windows\system32\cmd.exe" /c taskkill /F /IM kl-plugin.exe
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1224
- - C:\Windows\system32\taskkill.exe
    taskkill /F /IM kl-plugin.exe
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:5080
- C:\Users\Admin\AppData\Local\Temp\kl-plugin.exe
  "C:\Users\Admin\AppData\Local\Temp\kl-plugin.exe" chongmei33.publicvm.com 7045 "WSHRAT|BA0666BB|PKVHMXKI|Admin|Microsoft Windows 10 Pro|plus|nan-av|false - 6/13/2024|Visual Basic-v2.0|GB:United Kingdom" 1
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:1612

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

JavaScript

T1059.007

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

json[1].json

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\4NMOWK91\json[1].json
Size 297B
SHA256 1191fa5928ed7ebf51830c0e601a327fb6480e4f35d9f96962c828b5b45ea260
MD5 be2ba1a8c142b5fa2178396ac67cb7d8
SHA1 b7c3d209d9c95d4b67d7ffb3c777d07f398260a5
SHA512 cca824422ebcc194e96c6af6c66160409b6c4f9e30af387921ad55712fc4316866e7ac3b2806427f7e06e43e99ef56e612738261f8d38fb58ef2758dc13c9204
MD5 SHA1 SHA512

Submit Download

Gcp.exe

Path C:\Users\Admin\AppData\Local\Temp\Gcp.exe
Size 243KB
SHA256 1f19267129cbabe2e50837f88eb2854c64521bd964f43a58f37365e60d5da5bd
MD5 d868c9dfdd377a1128f484a33c9d427d
SHA1 3cd816d84a5a06a669eb5cde82aa3eca272a6f13
SHA512 2702e2df330931d9fd2ed15e54aec37dbd68737cf3db642a8842cab813b9e3be67b7a5356d426772690b0b9e5c384931640d891f51662f870a9d3022eabce52b
SSDEEP 3072:734DXDvzgiyxjiNSWj+cLuaD2gSrb5hB38EIOsF:734DXDvzg1ib6lgSrR8EHs
MD5 SHA1 SHA512 SSDEEP

Submit Download

icon-smile-kl.js

Path C:\Users\Admin\AppData\Local\Temp\icon-smile-kl.js
Size 345KB
SHA256 0a75da170bd6e1cd271f48974d98345fb60b00ac3327b5e9d8fa8394c83800db
MD5 5ffa2f9b4305ee8ab9676456a5c41ae7
SHA1 9e517938920844699eddd8043df45e075682eef7
SHA512 06ed498e22a982b135c4c380cd01d296d2f05b106b5c75be4cccdaf41575750622eb7c8d5448dc935ebc6b5d525e803b9f4a3b132d503b6eccf4c28e42cad28d
SSDEEP 6144:0KUb2TCD3Gfn8E/3daJn68s+1bfFe45sqFydvjnU:0KUaoe3GlfFV2qFydTU
MD5 SHA1 SHA512 SSDEEP

Submit Download

kl-plugin.exe

Path C:\Users\Admin\AppData\Local\Temp\kl-plugin.exe
Size 25KB
SHA256 272e64291748fa8be01109faa46c0ea919bf4baf4924177ea6ac2ee0574f1c1a
MD5 7099a939fa30d939ccceb2f0597b19ed
SHA1 37b644ef5722709cd9024a372db4590916381976
SHA512 6e179a32b3091beee71d425248ae56495e31e9df569159a93af5826ddef28fba904ae4810d3ca2da45fe6dc8be1eeaecf71e8225b3e605f22f41f4e46d1cf721
SSDEEP 384:bmHJExna0Gnj/XWRxDs3LWYtVyQeGBe4jRrWfTGkLR7w4DJ6LNcJq8:aH3asVtVyQemjK0/O7
MD5 SHA1 SHA512 SSDEEP

Submit Download

010729194c08b557dc260c821d07d35b2c8fdfbaa18ff27c7f1f2fe233850fd1.vbs

Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\010729194c08b557dc260c821d07d35b2c8fdfbaa18ff27c7f1f2fe233850fd1.vbs
Size 3.2MB
SHA256 010729194c08b557dc260c821d07d35b2c8fdfbaa18ff27c7f1f2fe233850fd1
MD5 3a3f7a4a8b7ea91bd05523cb83456441
SHA1 20bbbe54a25cced1f74f34521918effd6aa5877d
SHA512 c86b406a756a9f5ad7f1368e741687af94e12ee258fc42c99c9f14d6118ded6976a09e7d7fa1840d17c72d827a900760bf69dceb774798db1a3e86fa293ba0ed
SSDEEP 6144:0BRlhwEEM38fLACxm31KtNnzZnZjIylZLImb:0zYuIN/flHb
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/4500-18-0x0000000000930000-0x0000000000974000-memory.dmp

Download

memory/4500-21-0x0000000005330000-0x0000000005396000-memory.dmp

Download

memory/4500-36-0x0000000005FE0000-0x0000000006030000-memory.dmp

Download

memory/4500-37-0x00000000060D0000-0x000000000616C000-memory.dmp

Download

memory/4500-40-0x00000000066D0000-0x0000000006762000-memory.dmp

Download

memory/4500-41-0x0000000006860000-0x000000000686A000-memory.dmp

Download

memory/4500-19-0x0000000005730000-0x0000000005CD4000-memory.dmp

Download

memory/4500-17-0x000000007492E000-0x000000007492F000-memory.dmp

Download

memory/4500-46-0x000000007492E000-0x000000007492F000-memory.dmp

Download