agenttesla | d44d889a83ad2d32ebadca99e33af4823c015159862365305cd3eda5fc4bcf99

Analysis

max time kernel
131s
max time network
127s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28-03-2024 19:16

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General

Target

REMITTANCE COPY.exe
Size

935KB
MD5

c4c5220498e9618df1443285a8bcd048
SHA1

e8f0b41c0eb27aaa8f3a552513ca7145a241fe91
SHA256

99f730c18a5d4a5bb442c5b7045bf38f2aa183a7c9121ee60ce7bb345510557f
SHA512

cf9515514500c7ec674390aa30cdfb15960167dbe99164de757762b5d0fda913e442be2cfd4420b2c2f5a942c9ebdb5efb5619010245cfc93b83aec741a03b59
SSDEEP

6144:bCw9AapDnOzrN9J6Uq4/TC8lDBjyaMqr4zyUHVIB8NafdOUJq3WC1NfCBmCrnrIK:b59p91Ubr1WlqTiV1NnUJq3WQfCGcT3

Score

10^/10

agenttesla collection evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.westviewcargos.com
Port:
587
Username:
[email protected]
Password:
Choice@@@12345

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/4056-16-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Processes:

REMITTANCE COPY.exe

description ioc process

Key opened \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Oracle\VirtualBox Guest Additions REMITTANCE COPY.exe
Looks for VMWare Tools registry key 2 TTPs 1 IoCs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Processes:

REMITTANCE COPY.exe

description ioc process

Key opened \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\VMware, Inc.\VMware Tools REMITTANCE COPY.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Oracle\VirtualBox Guest Additions	REMITTANCE COPY.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\VMware, Inc.\VMware Tools	REMITTANCE COPY.exe

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:

REMITTANCE COPY.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	REMITTANCE COPY.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	REMITTANCE COPY.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:

REMITTANCE COPY.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	REMITTANCE COPY.exe

Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
spyware stealer

Data from Local System
T1005

Credentials in Registry
T1552.002
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

Processes:

REMITTANCE COPY.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	REMITTANCE COPY.exe
Key opened	\REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	REMITTANCE COPY.exe
Key opened	\REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	REMITTANCE COPY.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

REMITTANCE COPY.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\lyNwef = "C:\\Users\\Admin\\AppData\\Roaming\\lyNwef\\lyNwef.exe"	REMITTANCE COPY.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:

REMITTANCE COPY.exe

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

Suspicious use of SetThreadContext 1 IoCs

Processes:

REMITTANCE COPY.exe

description pid process target process

PID 1040 set thread context of 4056 1040 REMITTANCE COPY.exe REMITTANCE COPY.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

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/Job
T1053

Processes:

schtasks.exe

pid process

1144 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

REMITTANCE COPY.exeREMITTANCE COPY.exe

pid process

1040 REMITTANCE COPY.exe
4056 REMITTANCE COPY.exe
4056 REMITTANCE COPY.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

REMITTANCE COPY.exeREMITTANCE COPY.exe

description pid process

Token: SeDebugPrivilege 1040 REMITTANCE COPY.exe
Token: SeDebugPrivilege 4056 REMITTANCE COPY.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

REMITTANCE COPY.exe

pid process

4056 REMITTANCE COPY.exe

description	pid	process	target process
PID 1040 set thread context of 4056	1040	REMITTANCE COPY.exe	REMITTANCE COPY.exe

pid	process
1144	schtasks.exe

pid	process
1040	REMITTANCE COPY.exe
4056	REMITTANCE COPY.exe
4056	REMITTANCE COPY.exe

description	pid	process
Token: SeDebugPrivilege	1040	REMITTANCE COPY.exe
Token: SeDebugPrivilege	4056	REMITTANCE COPY.exe

pid	process
4056	REMITTANCE COPY.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

REMITTANCE COPY.exe

description	pid	process	target process
PID 1040 wrote to memory of 1144	1040	REMITTANCE COPY.exe	schtasks.exe
PID 1040 wrote to memory of 1144	1040	REMITTANCE COPY.exe	schtasks.exe
PID 1040 wrote to memory of 1144	1040	REMITTANCE COPY.exe	schtasks.exe
PID 1040 wrote to memory of 4056	1040	REMITTANCE COPY.exe	REMITTANCE COPY.exe
PID 1040 wrote to memory of 4056	1040	REMITTANCE COPY.exe	REMITTANCE COPY.exe
PID 1040 wrote to memory of 4056	1040	REMITTANCE COPY.exe	REMITTANCE COPY.exe
PID 1040 wrote to memory of 4056	1040	REMITTANCE COPY.exe	REMITTANCE COPY.exe
PID 1040 wrote to memory of 4056	1040	REMITTANCE COPY.exe	REMITTANCE COPY.exe
PID 1040 wrote to memory of 4056	1040	REMITTANCE COPY.exe	REMITTANCE COPY.exe
PID 1040 wrote to memory of 4056	1040	REMITTANCE COPY.exe	REMITTANCE COPY.exe
PID 1040 wrote to memory of 4056	1040	REMITTANCE COPY.exe	REMITTANCE COPY.exe

outlook_office_path 1 IoCs

Processes:

REMITTANCE COPY.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	REMITTANCE COPY.exe

outlook_win_path 1 IoCs

Processes:

REMITTANCE COPY.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	REMITTANCE COPY.exe

C:\Users\Admin\AppData\Local\Temp\REMITTANCE COPY.exe
"C:\Users\Admin\AppData\Local\Temp\REMITTANCE COPY.exe"
1⤵
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Checks computer location settings
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1040

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\zcvmximsXc" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDE79.tmp"
2⤵
- Creates scheduled task(s)
PID:1144

C:\Users\Admin\AppData\Local\Temp\REMITTANCE COPY.exe
"{path}"
2⤵
- 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:4056

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Modify Registry

T1112

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Credentials in Registry

T1552.002

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

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\REMITTANCE COPY.exe.log
Filesize
1KB

MD5
3aea5c16a0e7b995983bd1771d5ea11d

SHA1
5ce845c82ace7946cec271a8bac45572b977419c

SHA256
8d7143472e7cf3a40f46c6346251661e10fe3a932321cff14190648ee3d9c02f

SHA512
4d0949cc3c0b7bc19b94a7166fb1a528c5833773b4b577f1730c4aab93ec03f3d72714ebf8a103f2a6ab4f97abef2945e78c91d464885fb4f1f9c584d7a1b243

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpDE79.tmp
Filesize
1KB

MD5
3c874168781ea0d17ccd085ebd823380

SHA1
e019fd2c4452629423893d93841d01c99ee5f195

SHA256
24a278bce57414357f504a010f479f938fd3dc21e994b622eb2ef2ba93baaadf

SHA512
aaf20825cc5ef2990421caea9edc8ef7df7196c56056ea5270b0e02adb85c8b504a58c15d5d359b700b6de442e24f7fde44a1c142825985a23fd6a4e92107cff

Download Submit
memory/1040-12-0x000000000E970000-0x000000000E9D6000-memory.dmp

Filesize
408KB

Download
memory/1040-4-0x0000000004FA0000-0x000000000503C000-memory.dmp

Filesize
624KB

Download
memory/1040-2-0x00000000054B0000-0x0000000005A54000-memory.dmp

Filesize
5.6MB

Download
memory/1040-5-0x0000000005150000-0x0000000005160000-memory.dmp

Filesize
64KB

Download
memory/1040-6-0x0000000004ED0000-0x0000000004EDA000-memory.dmp

Filesize
40KB

Download
memory/1040-7-0x0000000004850000-0x0000000004864000-memory.dmp

Filesize
80KB

Download
memory/1040-8-0x0000000075380000-0x0000000075B30000-memory.dmp

Filesize
7.7MB

Download
memory/1040-9-0x0000000005150000-0x0000000005160000-memory.dmp

Filesize
64KB

Download
memory/1040-0-0x0000000000350000-0x0000000000440000-memory.dmp

Filesize
960KB

Download
memory/1040-11-0x00000000074D0000-0x000000000750E000-memory.dmp

Filesize
248KB

Download
memory/1040-20-0x0000000075380000-0x0000000075B30000-memory.dmp

Filesize
7.7MB

Download
memory/1040-3-0x0000000004E10000-0x0000000004EA2000-memory.dmp

Filesize
584KB

Download
memory/1040-10-0x0000000006450000-0x00000000064D4000-memory.dmp

Filesize
528KB

Download
memory/1040-1-0x0000000075380000-0x0000000075B30000-memory.dmp

Filesize
7.7MB

Download
memory/4056-19-0x0000000075380000-0x0000000075B30000-memory.dmp

Filesize
7.7MB

Download
memory/4056-27-0x0000000005690000-0x00000000056A0000-memory.dmp

Filesize
64KB

Download
memory/4056-21-0x0000000005690000-0x00000000056A0000-memory.dmp

Filesize
64KB

Download
memory/4056-22-0x0000000005670000-0x0000000005688000-memory.dmp

Filesize
96KB

Download
memory/4056-24-0x0000000075380000-0x0000000075B30000-memory.dmp

Filesize
7.7MB

Download
memory/4056-25-0x0000000005690000-0x00000000056A0000-memory.dmp

Filesize
64KB

Download
memory/4056-26-0x00000000068F0000-0x0000000006940000-memory.dmp

Filesize
320KB

Download
memory/4056-16-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download