agenttesla | 17d541ebec88f36a380096bc34ab5e358a75a02395f14ce35b067304d94260f9

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
27-07-2023 13:36

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General

Target

NA_17d541ebec88f36a380096bc3_JC.vbs
Size

3.3MB
MD5

535074e18bb8158e02c210a49b608d27
SHA1

773c9512cb8e3629d90abbb2c61bab322032511d
SHA256

17d541ebec88f36a380096bc34ab5e358a75a02395f14ce35b067304d94260f9
SHA512

43e1afa8d1e08fb7b12ebf6edb075ea5ce0df662e890b57fe5b95d831fbb0c69063c7c44055cdfce627c5a3aecee32f5beeeb443af66bbdc31f7551b34bda966
SSDEEP

6144:5TLuIztXQahBE8pyDIg+8LBEa47U+T1dk9nJbAIcKU/JaShKUHQLJrRt4/ea4lvg:5/fBLE/t4/ea4lo

Score

10^/10

agenttesla wshrat collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Credentials

Protocol: smtp
Host:
smtp.gmail.com
Port:
587
Username:
[email protected]
Password:
gmipgqhnffzhjcfv

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.gmail.com
Port:
587
Username:
[email protected]
Password:
gmipgqhnffzhjcfv
Email To:
[email protected]

Extracted

Family

wshrat

http://lee44.kozow.com:4078

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 27 IoCs

flow	pid	Process
24	5000	wscript.exe
26	5000	wscript.exe
32	5000	wscript.exe
41	5000	wscript.exe
42	5000	wscript.exe
53	5000	wscript.exe
54	5000	wscript.exe
55	5000	wscript.exe
56	5000	wscript.exe
57	5000	wscript.exe
58	5000	wscript.exe
62	5000	wscript.exe
67	5000	wscript.exe
68	5000	wscript.exe
69	5000	wscript.exe
73	5000	wscript.exe
75	5000	wscript.exe
76	5000	wscript.exe
89	5000	wscript.exe
90	5000	wscript.exe
91	5000	wscript.exe
92	5000	wscript.exe
93	5000	wscript.exe
94	5000	wscript.exe
95	5000	wscript.exe
100	5000	wscript.exe
101	5000	wscript.exe

Checks computer location settings 2 TTPs 3 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-1-5-21-3195054982-4292022746-1467505928-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3195054982-4292022746-1467505928-1000\Control Panel\International\Geo\Nation	wscript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3195054982-4292022746-1467505928-1000\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\NA_17d541ebec88f36a380096bc3_JC.vbs	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\NA_17d541ebec88f36a380096bc3_JC.vbs	wscript.exe

Executes dropped EXE 1 IoCs

pid	Process
4652	Tempwinlogon.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
T1552.001
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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3195054982-4292022746-1467505928-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Tempwinlogon.exe
Key opened	\REGISTRY\USER\S-1-5-21-3195054982-4292022746-1467505928-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Tempwinlogon.exe
Key opened	\REGISTRY\USER\S-1-5-21-3195054982-4292022746-1467505928-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Tempwinlogon.exe

Adds Run key to start application 2 TTPs 9 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3195054982-4292022746-1467505928-1000\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3195054982-4292022746-1467505928-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Windows Update\\Windows Update.exe"	Tempwinlogon.exe
Key created	\REGISTRY\USER\S-1-5-21-3195054982-4292022746-1467505928-1000\software\microsoft\windows\currentversion\run	WScript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3195054982-4292022746-1467505928-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NA_17d541ebec88f36a380096bc3_JC = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\NA_17d541ebec88f36a380096bc3_JC.vbs\""	WScript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	WScript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NA_17d541ebec88f36a380096bc3_JC = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\NA_17d541ebec88f36a380096bc3_JC.vbs\""	WScript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3195054982-4292022746-1467505928-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NA_17d541ebec88f36a380096bc3_JC = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\NA_17d541ebec88f36a380096bc3_JC.vbs\""	wscript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NA_17d541ebec88f36a380096bc3_JC = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\NA_17d541ebec88f36a380096bc3_JC.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
23	ip-api.com

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3195054982-4292022746-1467505928-1000_Classes\Local Settings	wscript.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4652	Tempwinlogon.exe
4652	Tempwinlogon.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4652	Tempwinlogon.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4652	Tempwinlogon.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2176 wrote to memory of 5000	2176	WScript.exe	86
PID 2176 wrote to memory of 5000	2176	WScript.exe	86
PID 5000 wrote to memory of 4548	5000	wscript.exe	90
PID 5000 wrote to memory of 4548	5000	wscript.exe	90
PID 4548 wrote to memory of 4652	4548	WScript.exe	92
PID 4548 wrote to memory of 4652	4548	WScript.exe	92
PID 4548 wrote to memory of 4652	4548	WScript.exe	92

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3195054982-4292022746-1467505928-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Tempwinlogon.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3195054982-4292022746-1467505928-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Tempwinlogon.exe

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\NA_17d541ebec88f36a380096bc3_JC.vbs"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2176
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\NA_17d541ebec88f36a380096bc3_JC.vbs"
  2⤵
  - 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:5000
- - C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\keylogger.vbs"
    3⤵
    - Checks computer location settings
    - Suspicious use of WriteProcessMemory
    PID:4548
  - - C:\Users\Admin\AppData\Local\Tempwinlogon.exe
      "C:\Users\Admin\AppData\Local\Tempwinlogon.exe"
      4⤵
      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:4652

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\5XLATO3O\json[1].json

Filesize
323B

MD5
0c17abb0ed055fecf0c48bb6e46eb4eb

SHA1
a692730c8ec7353c31b94a888f359edb54aaa4c8

SHA256
f41e99f954e33e7b0e39930ec8620bf29801efc44275c1ee6b5cfa5e1be202c0

SHA512
645a9f2f94461d8a187261b736949df398ece5cfbf1af8653d18d3487ec1269d9f565534c1e249c12f31b3b1a41a8512953b1e991b001fc1360059e3fd494ec3

Download Submit
C:\Users\Admin\AppData\Local\Tempwinlogon.exe

Filesize
168KB

MD5
d1f85ec72f11699fed66783d175760e5

SHA1
08b642efb0b1f483f955156c2dc890e90e867cf5

SHA256
3e9ee225b6d213f8e5e6ab0b6d14f85daf0fc5d3e47942277997fff940b5acb7

SHA512
8209e250bff8e06123b5446ea9a0321fbf18a93897937b01bca8930036f07f67c703f26828152752b50a9b87a1cd6eea6d50dbd19e3f34d17ffd750157f36f97

Download Submit
C:\Users\Admin\AppData\Local\Tempwinlogon.exe

Filesize
168KB

MD5
d1f85ec72f11699fed66783d175760e5

SHA1
08b642efb0b1f483f955156c2dc890e90e867cf5

SHA256
3e9ee225b6d213f8e5e6ab0b6d14f85daf0fc5d3e47942277997fff940b5acb7

SHA512
8209e250bff8e06123b5446ea9a0321fbf18a93897937b01bca8930036f07f67c703f26828152752b50a9b87a1cd6eea6d50dbd19e3f34d17ffd750157f36f97

Download Submit
C:\Users\Admin\AppData\Local\Tempwinlogon.exe

Filesize
168KB

MD5
d1f85ec72f11699fed66783d175760e5

SHA1
08b642efb0b1f483f955156c2dc890e90e867cf5

SHA256
3e9ee225b6d213f8e5e6ab0b6d14f85daf0fc5d3e47942277997fff940b5acb7

SHA512
8209e250bff8e06123b5446ea9a0321fbf18a93897937b01bca8930036f07f67c703f26828152752b50a9b87a1cd6eea6d50dbd19e3f34d17ffd750157f36f97

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\NA_17d541ebec88f36a380096bc3_JC.vbs

Filesize
3.3MB

MD5
535074e18bb8158e02c210a49b608d27

SHA1
773c9512cb8e3629d90abbb2c61bab322032511d

SHA256
17d541ebec88f36a380096bc34ab5e358a75a02395f14ce35b067304d94260f9

SHA512
43e1afa8d1e08fb7b12ebf6edb075ea5ce0df662e890b57fe5b95d831fbb0c69063c7c44055cdfce627c5a3aecee32f5beeeb443af66bbdc31f7551b34bda966

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\NA_17d541ebec88f36a380096bc3_JC.vbs

Filesize
3.3MB

MD5
535074e18bb8158e02c210a49b608d27

SHA1
773c9512cb8e3629d90abbb2c61bab322032511d

SHA256
17d541ebec88f36a380096bc34ab5e358a75a02395f14ce35b067304d94260f9

SHA512
43e1afa8d1e08fb7b12ebf6edb075ea5ce0df662e890b57fe5b95d831fbb0c69063c7c44055cdfce627c5a3aecee32f5beeeb443af66bbdc31f7551b34bda966

Download Submit
C:\Users\Admin\AppData\Roaming\NA_17d541ebec88f36a380096bc3_JC.vbs

Filesize
3.3MB

MD5
535074e18bb8158e02c210a49b608d27

SHA1
773c9512cb8e3629d90abbb2c61bab322032511d

SHA256
17d541ebec88f36a380096bc34ab5e358a75a02395f14ce35b067304d94260f9

SHA512
43e1afa8d1e08fb7b12ebf6edb075ea5ce0df662e890b57fe5b95d831fbb0c69063c7c44055cdfce627c5a3aecee32f5beeeb443af66bbdc31f7551b34bda966

Download Submit
C:\Users\Admin\AppData\Roaming\keylogger.vbs

Filesize
336KB

MD5
eb6cbe2f11642772cf11896551a03673

SHA1
a3d196c4ec0eb4f563e38e0d9d9b4f9dbd738adf

SHA256
3bd943ecdb221e050c19ceda7dcf479fb70554e81630426dca7d7962770eadaa

SHA512
d488f65ad29300141da45d655af80546217083f616746843de2477b053720afc212a8994c1705e7a27dc26d49bd4962a2761a46a8f667753aaea47da27bf46de

Download Submit
memory/4652-159-0x0000000005620000-0x0000000005686000-memory.dmp

Filesize
408KB

Download
memory/4652-158-0x00000000057F0000-0x0000000005800000-memory.dmp

Filesize
64KB

Download
memory/4652-157-0x0000000005BD0000-0x0000000006174000-memory.dmp

Filesize
5.6MB

Download
memory/4652-156-0x0000000000C20000-0x0000000000C50000-memory.dmp

Filesize
192KB

Download
memory/4652-164-0x0000000006510000-0x0000000006560000-memory.dmp

Filesize
320KB

Download
memory/4652-165-0x0000000006730000-0x00000000068F2000-memory.dmp

Filesize
1.8MB

Download
memory/4652-175-0x0000000006600000-0x000000000669C000-memory.dmp

Filesize
624KB

Download
memory/4652-176-0x0000000006CE0000-0x0000000006D72000-memory.dmp

Filesize
584KB

Download
memory/4652-177-0x0000000006CC0000-0x0000000006CCA000-memory.dmp

Filesize
40KB

Download
memory/4652-180-0x0000000074490000-0x0000000074C40000-memory.dmp

Filesize
7.7MB

Download
memory/4652-181-0x00000000057F0000-0x0000000005800000-memory.dmp

Filesize
64KB

Download
memory/4652-155-0x0000000074490000-0x0000000074C40000-memory.dmp

Filesize
7.7MB

Download