agenttesla | b662a8f2d1c6d859afd333504ce89506de871887b57b2ddf1bbc6b9be18ef292

Analysis

max time kernel
145s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
21-05-2022 02:16

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General

Target

Urgent Enquiry.exe
Size

406KB
MD5

7a4705e3aeb2f90eb861a9169fb5a731
SHA1

dc6b67d5b0606c9289480e507a0eed92f90c6a8a
SHA256

64ff4868607f7b364f1c83fcbba25a4f954de7682d05d134fc407b4b9af10c0c
SHA512

5d1fabf9a839b8f22b2d3345201fff676731ef7da1d48d4a702383efbf46150f49da472eeb47778abe093fae207a8b06e657212263421000913fa5e59739db0b

Score

10^/10

agenttesla collection evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Credentials

Protocol: smtp
Host:
mail.drngetu.co.za
Port:
587
Username:
[email protected]
Password:
WNFpR3FOMJ@6

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.drngetu.co.za
Port:
587
Username:
[email protected]
Password:
WNFpR3FOMJ@6

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla

AgentTesla Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1056-134-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Urgent Enquiry.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	Urgent Enquiry.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Urgent Enquiry.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

Processes:

Urgent Enquiry.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	Urgent Enquiry.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

Processes:

Urgent Enquiry.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Urgent Enquiry.exe
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Urgent Enquiry.exe
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Urgent Enquiry.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Urgent Enquiry.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\newapp = "C:\\Users\\Admin\\AppData\\Roaming\\newapp\\newapp.exe"	Urgent Enquiry.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

Urgent Enquiry.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	Urgent Enquiry.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	Urgent Enquiry.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Urgent Enquiry.exe

description pid process target process

PID 4980 set thread context of 1056 4980 Urgent Enquiry.exe Urgent Enquiry.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

4856 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

Urgent Enquiry.exe

pid process

1056 Urgent Enquiry.exe
1056 Urgent Enquiry.exe
Suspicious behavior: RenamesItself 1 IoCs

Processes:

Urgent Enquiry.exe

pid process

1056 Urgent Enquiry.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Urgent Enquiry.exe

description pid process

Token: SeDebugPrivilege 1056 Urgent Enquiry.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Urgent Enquiry.exe

pid process

1056 Urgent Enquiry.exe

description	pid	process	target process
PID 4980 set thread context of 1056	4980	Urgent Enquiry.exe	Urgent Enquiry.exe

pid	process
4856	schtasks.exe

pid	process
1056	Urgent Enquiry.exe
1056	Urgent Enquiry.exe

pid	process
1056	Urgent Enquiry.exe

description	pid	process
Token: SeDebugPrivilege	1056	Urgent Enquiry.exe

pid	process
1056	Urgent Enquiry.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

Urgent Enquiry.exe

description	pid	process	target process
PID 4980 wrote to memory of 4856	4980	Urgent Enquiry.exe	schtasks.exe
PID 4980 wrote to memory of 4856	4980	Urgent Enquiry.exe	schtasks.exe
PID 4980 wrote to memory of 4856	4980	Urgent Enquiry.exe	schtasks.exe
PID 4980 wrote to memory of 1056	4980	Urgent Enquiry.exe	Urgent Enquiry.exe
PID 4980 wrote to memory of 1056	4980	Urgent Enquiry.exe	Urgent Enquiry.exe
PID 4980 wrote to memory of 1056	4980	Urgent Enquiry.exe	Urgent Enquiry.exe
PID 4980 wrote to memory of 1056	4980	Urgent Enquiry.exe	Urgent Enquiry.exe
PID 4980 wrote to memory of 1056	4980	Urgent Enquiry.exe	Urgent Enquiry.exe
PID 4980 wrote to memory of 1056	4980	Urgent Enquiry.exe	Urgent Enquiry.exe
PID 4980 wrote to memory of 1056	4980	Urgent Enquiry.exe	Urgent Enquiry.exe
PID 4980 wrote to memory of 1056	4980	Urgent Enquiry.exe	Urgent Enquiry.exe

outlook_office_path 1 IoCs

Processes:

Urgent Enquiry.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Urgent Enquiry.exe

outlook_win_path 1 IoCs

Processes:

Urgent Enquiry.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Urgent Enquiry.exe

C:\Users\Admin\AppData\Local\Temp\Urgent Enquiry.exe
"C:\Users\Admin\AppData\Local\Temp\Urgent Enquiry.exe"
1⤵
- Checks BIOS information in registry
- Checks computer location settings
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4980

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\HYfBzIjo" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB5A.tmp"
2⤵
- Creates scheduled task(s)
PID:4856

C:\Users\Admin\AppData\Local\Temp\Urgent Enquiry.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
PID:1056

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

System Information Discovery

T1082

Peripheral Device Discovery

T1120

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\Urgent Enquiry.exe.log
Filesize
500B

MD5
2cf8da723c411f82e03635d9608be873

SHA1
f4f0d266e09f3a3e560b4f3bdf4d007072f553a6

SHA256
aacbd50ce6af35749c48f60099125c9c2d4105a7cc595713c993453780884521

SHA512
6bf5ebaa23390138ca2f61073f97a0e47cc484802b98b80e6f4a68e965d0a4f6e1ca8102378d44a232714b0b9e39085ad7a8c60445a47f41731e80354243b67f

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpB5A.tmp
Filesize
1KB

MD5
b1c4b574a1c3a86b1930fba65907520b

SHA1
1040d74a2f2a511554c64ad75b1baeed88635273

SHA256
750ea1a435529496fc6147fdc534d6a1456b9af8b05eab1d263dffcce9343833

SHA512
caa7ba37c907108d568bc46f791a4c8a3f38467efad826c28a7bc90cff916f487479810667208ba5968b5ce7436c03b84d4ba95af4f21315c3b41363901be88a

Download Submit
memory/1056-133-0x0000000000000000-mapping.dmp

Download
memory/1056-134-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1056-136-0x00000000752D0000-0x0000000075881000-memory.dmp

Filesize
5.7MB

Download
memory/4856-131-0x0000000000000000-mapping.dmp

Download
memory/4980-130-0x00000000752D0000-0x0000000075881000-memory.dmp

Filesize
5.7MB

Download