agenttesla | f1eb46659645f95cf7b90059247cac5cd905e63a9c8852bb92380e8c7be4fdf2

Analysis

max time kernel
153s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
31/10/2022, 10:46

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
RFI155001002.exe
Size 30KB
Sample221031-mty4zaaff5
SHA256 f1eb46659645f95cf7b90059247cac5cd905e63a9c8852bb92380e8c7be4fdf2
MD5 09ad87dc77262d542f1ff10db6761781
SHA1 130dd74da073ea7a5c86ab8148bc8f6f98b3d90f
SHA512 e66900e942541f11e8691bac696effe48537f3933fc2dd03d589e2a7244523bfd07d3cec44b1e487cd6a0cd7b70101e06a86f1eded3f9dd7f5efc1f1f3a13ec4
SSDEEP 384:E0EWlmMH2NL0ag2CcuvJTvOaFGsZHcoAXaQc4iuJtptYcFmVc03K:dSFluBTvOOKhKQc8JftYcFmVc6K
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

agenttesla quasar nov collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

http://107.189.4.253/b22/inc/7097e0820fdf5c.php

Extracted

Family

quasar

Version

1.3.0.0

Botnet

37.139.128.94:5000

Mutex

QSR_MUTEX_eZnYtXesrHquJP9u21

Attributes

encryption_key
cnjVAVdqAEtq3rq2N0WD
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Quasar Client Startup
subdirectory
SubDir

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
Quasar RAT
Quasar is an open source Remote Access Tool.
trojan spyware quasar

Quasar payload 1 IoCs

resource	yara_rule
behavioral2/memory/2792-6062-0x0000000000400000-0x000000000045E000-memory.dmp	family_quasar

Executes dropped EXE 4 IoCs

pid	Process
3592	Omiwtweajvlictzkrcrdfinear1.exe
1820	Omiwtweajvlictzkrcrdfinear1.exe
4688	Omiwtweajvlictzkrcrdfinear1.exe
2792	Omiwtweajvlictzkrcrdfinear1.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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	RFI155001002.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	Omiwtweajvlictzkrcrdfinear1.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-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFI155001002.exe
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFI155001002.exe
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFI155001002.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Aeweuqbhtyl = "\"C:\\Users\\Admin\\AppData\\Roaming\\Bppqpkwfhgc\\Aeweuqbhtyl.exe\""	RFI155001002.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Aeweuqbhtyl = "\"C:\\Users\\Admin\\AppData\\Roaming\\Bppqpkwfhgc\\Aeweuqbhtyl.exe\""	Omiwtweajvlictzkrcrdfinear1.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
38	api.ipify.org
39	api.ipify.org

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1264 set thread context of 2064	1264	RFI155001002.exe	91
PID 3592 set thread context of 2792	3592	Omiwtweajvlictzkrcrdfinear1.exe	96

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 11 IoCs

pid	Process
5096	powershell.exe
5096	powershell.exe
2064	RFI155001002.exe
2064	RFI155001002.exe
2960	powershell.exe
2960	powershell.exe
2064	RFI155001002.exe
3592	Omiwtweajvlictzkrcrdfinear1.exe
3592	Omiwtweajvlictzkrcrdfinear1.exe
3592	Omiwtweajvlictzkrcrdfinear1.exe
3592	Omiwtweajvlictzkrcrdfinear1.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	1264	RFI155001002.exe
Token: SeDebugPrivilege	5096	powershell.exe
Token: SeDebugPrivilege	3592	Omiwtweajvlictzkrcrdfinear1.exe
Token: SeDebugPrivilege	2064	RFI155001002.exe
Token: SeDebugPrivilege	2960	powershell.exe
Token: SeDebugPrivilege	2792	Omiwtweajvlictzkrcrdfinear1.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2064	RFI155001002.exe

Suspicious use of WriteProcessMemory 31 IoCs

description	pid	Process	procid_target
PID 1264 wrote to memory of 5096	1264	RFI155001002.exe	81
PID 1264 wrote to memory of 5096	1264	RFI155001002.exe	81
PID 1264 wrote to memory of 5096	1264	RFI155001002.exe	81
PID 1264 wrote to memory of 3592	1264	RFI155001002.exe	90
PID 1264 wrote to memory of 3592	1264	RFI155001002.exe	90
PID 1264 wrote to memory of 3592	1264	RFI155001002.exe	90
PID 1264 wrote to memory of 2064	1264	RFI155001002.exe	91
PID 1264 wrote to memory of 2064	1264	RFI155001002.exe	91
PID 1264 wrote to memory of 2064	1264	RFI155001002.exe	91
PID 1264 wrote to memory of 2064	1264	RFI155001002.exe	91
PID 1264 wrote to memory of 2064	1264	RFI155001002.exe	91
PID 1264 wrote to memory of 2064	1264	RFI155001002.exe	91
PID 1264 wrote to memory of 2064	1264	RFI155001002.exe	91
PID 1264 wrote to memory of 2064	1264	RFI155001002.exe	91
PID 3592 wrote to memory of 2960	3592	Omiwtweajvlictzkrcrdfinear1.exe	92
PID 3592 wrote to memory of 2960	3592	Omiwtweajvlictzkrcrdfinear1.exe	92
PID 3592 wrote to memory of 2960	3592	Omiwtweajvlictzkrcrdfinear1.exe	92
PID 3592 wrote to memory of 1820	3592	Omiwtweajvlictzkrcrdfinear1.exe	94
PID 3592 wrote to memory of 1820	3592	Omiwtweajvlictzkrcrdfinear1.exe	94
PID 3592 wrote to memory of 1820	3592	Omiwtweajvlictzkrcrdfinear1.exe	94
PID 3592 wrote to memory of 4688	3592	Omiwtweajvlictzkrcrdfinear1.exe	95
PID 3592 wrote to memory of 4688	3592	Omiwtweajvlictzkrcrdfinear1.exe	95
PID 3592 wrote to memory of 4688	3592	Omiwtweajvlictzkrcrdfinear1.exe	95
PID 3592 wrote to memory of 2792	3592	Omiwtweajvlictzkrcrdfinear1.exe	96
PID 3592 wrote to memory of 2792	3592	Omiwtweajvlictzkrcrdfinear1.exe	96
PID 3592 wrote to memory of 2792	3592	Omiwtweajvlictzkrcrdfinear1.exe	96
PID 3592 wrote to memory of 2792	3592	Omiwtweajvlictzkrcrdfinear1.exe	96
PID 3592 wrote to memory of 2792	3592	Omiwtweajvlictzkrcrdfinear1.exe	96
PID 3592 wrote to memory of 2792	3592	Omiwtweajvlictzkrcrdfinear1.exe	96
PID 3592 wrote to memory of 2792	3592	Omiwtweajvlictzkrcrdfinear1.exe	96
PID 3592 wrote to memory of 2792	3592	Omiwtweajvlictzkrcrdfinear1.exe	96

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFI155001002.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFI155001002.exe

C:\Users\Admin\AppData\Local\Temp\RFI155001002.exe
"C:\Users\Admin\AppData\Local\Temp\RFI155001002.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1264
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAANQAwAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5096
- C:\Users\Admin\AppData\Local\Temp\Omiwtweajvlictzkrcrdfinear1.exe
  "C:\Users\Admin\AppData\Local\Temp\Omiwtweajvlictzkrcrdfinear1.exe"
  2⤵
  - Executes dropped EXE
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3592
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAANQAwAA==
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2960
- - C:\Users\Admin\AppData\Local\Temp\Omiwtweajvlictzkrcrdfinear1.exe
    C:\Users\Admin\AppData\Local\Temp\Omiwtweajvlictzkrcrdfinear1.exe
    3⤵
    - Executes dropped EXE
    PID:1820
- - C:\Users\Admin\AppData\Local\Temp\Omiwtweajvlictzkrcrdfinear1.exe
    C:\Users\Admin\AppData\Local\Temp\Omiwtweajvlictzkrcrdfinear1.exe
    3⤵
    - Executes dropped EXE
    PID:4688
- - C:\Users\Admin\AppData\Local\Temp\Omiwtweajvlictzkrcrdfinear1.exe
    C:\Users\Admin\AppData\Local\Temp\Omiwtweajvlictzkrcrdfinear1.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2792
- C:\Users\Admin\AppData\Local\Temp\RFI155001002.exe
  C:\Users\Admin\AppData\Local\Temp\RFI155001002.exe
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:2064

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

Replay Monitor

Loading Replay Monitor...

Downloads

Omiwtweajvlictzkrcrdfinear1.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Omiwtweajvlictzkrcrdfinear1.exe.log
Size 1KB
SHA256 0aaf22dc84cc3fcfe53de7ccfed8e662247dfb7f1a9967032c88790d0c663461
MD5 e87e48b105757e1c7563d1c719059733
SHA1 28a3f2b2e0672da2b531f4757d2b20b53032dafc
SHA512 bf19c5743143aee914a453c41189c722c9b90a5b8bf299cecf3e1f97656d32cd209ecb74da8aebc89bb41c27d189f73aaaabbc64fe383410c95dc76ad4218968
MD5 SHA1 SHA512

Submit Download

powershell.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
Size 1KB
SHA256 e2486a1bdcba80dad6dd6210d7374bd70ae196a523c06ceda71370fd3ea78359
MD5 4280e36a29fa31c01e4d8b2ba726a0d8
SHA1 c485c2c9ce0a99747b18d899b71dfa9a64dabe32
SHA512 494fe5f0ade03669e5830bed93c964d69b86629440148d7b0881cf53203fd89443ebff9b4d1ee9d96244f62af6edede622d9eacba37f80f389a0d522e4ad4ea4
MD5 SHA1 SHA512

Submit Download

ModuleAnalysisCache

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\ModuleAnalysisCache
Size 53KB
SHA256 474813b625f00710f29fa3b488235a6a22201851efb336bddf60d7d24a66bfba
MD5 06ad34f9739c5159b4d92d702545bd49
SHA1 9152a0d4f153f3f40f7e606be75f81b582ee0c17
SHA512 c272cd28ae164d465b779163ba9eca6a28261376414c6bbdfbd9f2128adb7f7ff1420e536b4d6000d0301ded2ec9036bc5c657588458bff41f176bdce8d74f92
SSDEEP 1536:q5C+jH04tAHkCSMrxyNhftflJdPYoFi3j39MVvjMLUsszyhMUp7Fv+Eca5b/h4ie:KC+jH04tAHk5MrxyNhftflJdPYoFi3jc
MD5 SHA1 SHA512 SSDEEP

Submit Download

StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 16KB
SHA256 4d4e8cd9497f3c2a433b40d1cd4769b2cd2086cce508bcc3bbd19710d46f9dee
MD5 9792be00cd3ef627360c8e6a6c740ad4
SHA1 bdbb472ae5057dac3bc0feb14199a29a6008c698
SHA512 ee3b53c0f4db768dd967d205b174db5901e71e356c3cbd6aa2171b7d828c1118b2723170ebee5273c37b6dd6928e1c6d2478596d3fbe917c49580a71127f8240
SSDEEP 384:orf+jn9i+UlVIzZtkho9o2THXK6seYcIl/r03SoZ8fYSP8jE0LCQ:yf9szcSo2THXNbqYSDRiE0n
MD5 SHA1 SHA512 SSDEEP

Submit Download