agenttesla | 2ebdc59e3bcf5477d0decb1a2a5079cafbf49295c2344f735ea42e44ad99f5b2

Analysis

max time kernel
146s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
12-07-2023 13:32

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General

Target

ORDER-230712_pdf.vbs
Size

8KB
MD5

8ad5ed0d841eccc69af3ae683181c8ba
SHA1

0431b124ba8702033a7c8afdc55405ce1189ca73
SHA256

2ebdc59e3bcf5477d0decb1a2a5079cafbf49295c2344f735ea42e44ad99f5b2
SHA512

a4640470d44bc47709b83cea2c25b1dddafdf57820269142d4dbc91586c87a314d913eea54daa6d4756b710bd8d0f52d928467b8276b2d072c859d08cc38051d
SSDEEP

96:V0Cfj4peBTHGxZem9WtqQGx9wtehFhesNhU4/i4eo4lhAv4HFje:14aSNW419FLPfBwr9lje

Score

10^/10

agenttesla wshrat collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

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

WSHRAT payload 2 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023178-143.dat	family_wshrat
behavioral2/files/0x0008000000023157-144.dat	family_wshrat

Blocklisted process makes network request 28 IoCs

flow	pid	Process
9	2860	WScript.exe
11	2860	WScript.exe
17	2860	WScript.exe
34	4560	WScript.exe
36	4560	WScript.exe
49	4560	WScript.exe
57	4560	WScript.exe
59	4560	WScript.exe
70	4560	WScript.exe
76	4560	WScript.exe
77	4560	WScript.exe
78	4560	WScript.exe
79	4560	WScript.exe
84	4560	WScript.exe
85	4560	WScript.exe
86	4560	WScript.exe
87	4560	WScript.exe
90	4560	WScript.exe
91	4560	WScript.exe
92	4560	WScript.exe
93	4560	WScript.exe
94	4560	WScript.exe
95	4560	WScript.exe
96	4560	WScript.exe
97	4560	WScript.exe
98	4560	WScript.exe
99	4560	WScript.exe
100	4560	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-1-5-21-1420546310-613437930-2990200354-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\Control Panel\International\Geo\Nation	WScript.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\WCVVRH.vbs	WScript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\WCVVRH.vbs	WScript.exe

Executes dropped EXE 1 IoCs

pid	Process
1628	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
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-1-5-21-1420546310-613437930-2990200354-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Tempwinlogon.exe
Key opened	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Tempwinlogon.exe
Key opened	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Tempwinlogon.exe

Adds Run key to start application 2 TTPs 5 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\software\microsoft\windows\currentversion\run	WScript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WCVVRH = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\WCVVRH.vbs\""	WScript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	WScript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WCVVRH = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\WCVVRH.vbs\""	WScript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Windows Update\\Windows Update.exe"	Tempwinlogon.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
33	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 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000_Classes\Local Settings	WScript.exe
Key created	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000_Classes\Local Settings	WScript.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1628	Tempwinlogon.exe
1628	Tempwinlogon.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1628	Tempwinlogon.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1628	Tempwinlogon.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2860 wrote to memory of 4560	2860	WScript.exe	86
PID 2860 wrote to memory of 4560	2860	WScript.exe	86
PID 4560 wrote to memory of 2028	4560	WScript.exe	87
PID 4560 wrote to memory of 2028	4560	WScript.exe	87
PID 2028 wrote to memory of 1628	2028	WScript.exe	91
PID 2028 wrote to memory of 1628	2028	WScript.exe	91
PID 2028 wrote to memory of 1628	2028	WScript.exe	91

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Tempwinlogon.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\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\ORDER-230712_pdf.vbs"
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2860
- C:\Windows\System32\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\WCVVRH.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:4560
- - C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\origin.vbs"
    3⤵
    - Checks computer location settings
    - Suspicious use of WriteProcessMemory
    PID:2028
  - - 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:1628

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

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

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\1ERYC57B\json[1].json

Filesize
323B

MD5
0c17abb0ed055fecf0c48bb6e46eb4eb

SHA1
a692730c8ec7353c31b94a888f359edb54aaa4c8

SHA256
f41e99f954e33e7b0e39930ec8620bf29801efc44275c1ee6b5cfa5e1be202c0

SHA512
645a9f2f94461d8a187261b736949df398ece5cfbf1af8653d18d3487ec1269d9f565534c1e249c12f31b3b1a41a8512953b1e991b001fc1360059e3fd494ec3

Download Submit
C:\Users\Admin\AppData\Local\Temp\WCVVRH.vbs

Filesize
558KB

MD5
caec1686fe2f17ceb59db064b80a9b9c

SHA1
de3fc1f6f4b94e327eb729a4290975e269f86fbe

SHA256
0f7d03b6fe00c7ca6bf1a2325e65db44bdfafcd43397fdc52db335204eb129ac

SHA512
375388568c6de97930605573528e3b064353a98eea3d73bf0fed72639dd248232c509d759b5cd0d6926ded263ca40e332d416364f72650bb8c873daa0d20d3b6

Download Submit
C:\Users\Admin\AppData\Local\Temp\origin.vbs

Filesize
331KB

MD5
d593230ad945cc8c2db3237ff31624d4

SHA1
a89e668a3026c2158b40489ddc8f211092472e1b

SHA256
fbe3fe3d46d3037f1a770e778a69dac55db62929b9571746e19c63ea59b28d88

SHA512
938e43724b56bd4a23a122b22b366bc0564f77a1ee1b8b3a576ab2e5c9f6877d36cdb68fcd9f762d617f94b8cf309ad378a2ab321eaf34e5542f5f0cd9ac3846

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

Filesize
165KB

MD5
d78e00882aa872bb8daaa715d7014413

SHA1
cb242a2e1d65263d733b45d0cda17ce50cb4e376

SHA256
58fe22735658313bf69b6e34aac69887063aa1d9618a1ae1e99822f47087dfe9

SHA512
613fed6c36d26fa18544eae2316e6e6e43a6e67eeb31fd043bd2833ca6b5b88b9b1a16db43a592196c365bf1326eac3a4511171d896bfcdcf5454566327e1ac6

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

Filesize
165KB

MD5
d78e00882aa872bb8daaa715d7014413

SHA1
cb242a2e1d65263d733b45d0cda17ce50cb4e376

SHA256
58fe22735658313bf69b6e34aac69887063aa1d9618a1ae1e99822f47087dfe9

SHA512
613fed6c36d26fa18544eae2316e6e6e43a6e67eeb31fd043bd2833ca6b5b88b9b1a16db43a592196c365bf1326eac3a4511171d896bfcdcf5454566327e1ac6

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

Filesize
165KB

MD5
d78e00882aa872bb8daaa715d7014413

SHA1
cb242a2e1d65263d733b45d0cda17ce50cb4e376

SHA256
58fe22735658313bf69b6e34aac69887063aa1d9618a1ae1e99822f47087dfe9

SHA512
613fed6c36d26fa18544eae2316e6e6e43a6e67eeb31fd043bd2833ca6b5b88b9b1a16db43a592196c365bf1326eac3a4511171d896bfcdcf5454566327e1ac6

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

Filesize
558KB

MD5
caec1686fe2f17ceb59db064b80a9b9c

SHA1
de3fc1f6f4b94e327eb729a4290975e269f86fbe

SHA256
0f7d03b6fe00c7ca6bf1a2325e65db44bdfafcd43397fdc52db335204eb129ac

SHA512
375388568c6de97930605573528e3b064353a98eea3d73bf0fed72639dd248232c509d759b5cd0d6926ded263ca40e332d416364f72650bb8c873daa0d20d3b6

Download Submit
memory/1628-164-0x0000000005480000-0x00000000054E6000-memory.dmp

Filesize
408KB

Download
memory/1628-163-0x0000000005A30000-0x0000000005FD4000-memory.dmp

Filesize
5.6MB

Download
memory/1628-165-0x0000000005630000-0x0000000005640000-memory.dmp

Filesize
64KB

Download
memory/1628-168-0x0000000006360000-0x00000000063B0000-memory.dmp

Filesize
320KB

Download
memory/1628-169-0x0000000006580000-0x0000000006742000-memory.dmp

Filesize
1.8MB

Download
memory/1628-170-0x0000000006450000-0x00000000064E2000-memory.dmp

Filesize
584KB

Download
memory/1628-171-0x0000000006510000-0x000000000651A000-memory.dmp

Filesize
40KB

Download
memory/1628-174-0x0000000005630000-0x0000000005640000-memory.dmp

Filesize
64KB

Download
memory/1628-162-0x0000000000AA0000-0x0000000000AD0000-memory.dmp

Filesize
192KB

Download