agenttesla | 895524a9fd9c55bab5767eaf7a2a1742ab0b41f1a9c549f68b7b0ac640da3113

Analysis

max time kernel
150s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
29-05-2024 05:34

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General

Target

img3181-2020-876567.scr
Size

1.3MB
MD5

76aabc4357230893d7c0171d7a088831
SHA1

097b4609dcd3537bd89351d6a90604cf7da4b65d
SHA256

dcc39ce58dfbb4a76b2cc553cd796cb23f0c6b18ec44a3eeef7303d470002139
SHA512

78dcc95267f04be2ad5860aad49b4f64c2fd9157cfed6ca66b672593bc7f35eeedb866b53e607d5cc57258e202af1a0468425ab9c8d5b8cf06a2acd764c89b28
SSDEEP

24576:DgKKsmIaznKHfsIBDI2COHHTacrLpFQF1D2+IvnP1eL:DSKH0Iy2COne2Lo1D2+inUL

Score

10^/10

agenttesla nanocore collection keylogger spyware stealer trojan upx

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

95.217.140.37:1104

Mutex

e5408f25-998f-4f80-8f75-173c98ecf237

Attributes

activate_away_mode
true
backup_connection_host
95.217.140.37
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-02-27T20:20:36.627695536Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
1104
default_group
Default
enable_debug_mode
true
gc_threshold
1.048576e+07
keep_alive_timeout
30000
keyboard_logging
false
lan_timeout
2500
max_packet_size
1.048576e+07
mutex
e5408f25-998f-4f80-8f75-173c98ecf237
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
95.217.140.37
primary_dns_server
8.8.8.8
request_elevation
true
restart_delay
5000
run_delay
0
run_on_startup
true
set_critical_process
true
timeout_interval
5000
use_custom_dns_server
false
version
1.2.2.0
wan_timeout
8000

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
NanoCore
NanoCore is a remote access tool (RAT) with a variety of capabilities.
keylogger trojan stealer spyware nanocore

AgentTesla payload 7 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1252-35-0x0000000000400000-0x00000000004B1000-memory.dmp	family_agenttesla
behavioral2/memory/1252-33-0x00000000008B0000-0x0000000000902000-memory.dmp	family_agenttesla
behavioral2/memory/1252-32-0x00000000008B0000-0x0000000000902000-memory.dmp	family_agenttesla
behavioral2/memory/1252-31-0x0000000000400000-0x00000000004B1000-memory.dmp	family_agenttesla
behavioral2/memory/1252-30-0x0000000000400000-0x00000000004B1000-memory.dmp	family_agenttesla
behavioral2/memory/1252-29-0x0000000000400000-0x00000000004B1000-memory.dmp	family_agenttesla
behavioral2/memory/1252-60-0x0000000000400000-0x00000000004B1000-memory.dmp	family_agenttesla

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

Processes:

web.exeiSjc3t29EfjInqO.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	web.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	iSjc3t29EfjInqO.exe

Drops startup file 1 IoCs

Processes:

notepad.exe

description ioc process

File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\web.exe.vbs notepad.exe
Executes dropped EXE 4 IoCs

Processes:

web.exeiSjc3t29EfjInqO.exeweb.exeweb.exe

pid process

4236 web.exe
4280 iSjc3t29EfjInqO.exe
1252 web.exe
4016 web.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

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\web.exe.vbs	notepad.exe

pid	process
4236	web.exe
4280	iSjc3t29EfjInqO.exe
1252	web.exe
4016	web.exe

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral2/memory/1252-25-0x0000000000400000-0x00000000004B1000-memory.dmp	upx
behavioral2/memory/1252-28-0x0000000000400000-0x00000000004B1000-memory.dmp	upx
behavioral2/memory/1252-35-0x0000000000400000-0x00000000004B1000-memory.dmp	upx
behavioral2/memory/1252-31-0x0000000000400000-0x00000000004B1000-memory.dmp	upx
behavioral2/memory/1252-30-0x0000000000400000-0x00000000004B1000-memory.dmp	upx
behavioral2/memory/1252-29-0x0000000000400000-0x00000000004B1000-memory.dmp	upx

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

web.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	web.exe
Key opened	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	web.exe
Key opened	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	web.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

web.exeiSjc3t29EfjInqO.exe

description	pid	process	target process
PID 4236 set thread context of 1252	4236	web.exe	web.exe
PID 4280 set thread context of 3224	4280	iSjc3t29EfjInqO.exe	RegSvcs.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

4636 schtasks.exe
NTFS ADS 1 IoCs

Processes:

notepad.exe

description ioc process

File created C:\Users\Admin\AppData\Roaming\startup\web.exe:ZoneIdentifier notepad.exe

pid	process
4636	schtasks.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\startup\web.exe:ZoneIdentifier	notepad.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

img3181-2020-876567.scrweb.exeweb.exeweb.exeiSjc3t29EfjInqO.exeRegSvcs.exe

pid	process
4848	img3181-2020-876567.scr
4848	img3181-2020-876567.scr
4236	web.exe
4236	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
4016	web.exe
1252	web.exe
1252	web.exe
4016	web.exe
4016	web.exe
4280	iSjc3t29EfjInqO.exe
4280	iSjc3t29EfjInqO.exe
4280	iSjc3t29EfjInqO.exe
4280	iSjc3t29EfjInqO.exe
4280	iSjc3t29EfjInqO.exe
3224	RegSvcs.exe
3224	RegSvcs.exe
3224	RegSvcs.exe
3224	RegSvcs.exe
4280	iSjc3t29EfjInqO.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

RegSvcs.exe

pid process

3224 RegSvcs.exe
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

web.exe

pid process

4236 web.exe
Suspicious behavior: SetClipboardViewer 1 IoCs

Processes:

web.exe

pid process

1252 web.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

iSjc3t29EfjInqO.exeweb.exeRegSvcs.exe

description pid process

Token: SeDebugPrivilege 4280 iSjc3t29EfjInqO.exe
Token: SeDebugPrivilege 1252 web.exe
Token: SeDebugPrivilege 3224 RegSvcs.exe

pid	process
3224	RegSvcs.exe

pid	process
4236	web.exe

pid	process
1252	web.exe

description	pid	process
Token: SeDebugPrivilege	4280	iSjc3t29EfjInqO.exe
Token: SeDebugPrivilege	1252	web.exe
Token: SeDebugPrivilege	3224	RegSvcs.exe

Suspicious use of WriteProcessMemory 37 IoCs

Processes:

img3181-2020-876567.scrnotepad.exeweb.exeiSjc3t29EfjInqO.exeweb.exe

description	pid	process	target process
PID 4848 wrote to memory of 3980	4848	img3181-2020-876567.scr	notepad.exe
PID 4848 wrote to memory of 3980	4848	img3181-2020-876567.scr	notepad.exe
PID 4848 wrote to memory of 3980	4848	img3181-2020-876567.scr	notepad.exe
PID 4848 wrote to memory of 3980	4848	img3181-2020-876567.scr	notepad.exe
PID 4848 wrote to memory of 3980	4848	img3181-2020-876567.scr	notepad.exe
PID 3980 wrote to memory of 4236	3980	notepad.exe	web.exe
PID 3980 wrote to memory of 4236	3980	notepad.exe	web.exe
PID 3980 wrote to memory of 4236	3980	notepad.exe	web.exe
PID 4236 wrote to memory of 4280	4236	web.exe	iSjc3t29EfjInqO.exe
PID 4236 wrote to memory of 4280	4236	web.exe	iSjc3t29EfjInqO.exe
PID 4236 wrote to memory of 4280	4236	web.exe	iSjc3t29EfjInqO.exe
PID 4236 wrote to memory of 1252	4236	web.exe	web.exe
PID 4236 wrote to memory of 1252	4236	web.exe	web.exe
PID 4236 wrote to memory of 1252	4236	web.exe	web.exe
PID 4236 wrote to memory of 4016	4236	web.exe	web.exe
PID 4236 wrote to memory of 4016	4236	web.exe	web.exe
PID 4236 wrote to memory of 4016	4236	web.exe	web.exe
PID 4280 wrote to memory of 4636	4280	iSjc3t29EfjInqO.exe	schtasks.exe
PID 4280 wrote to memory of 4636	4280	iSjc3t29EfjInqO.exe	schtasks.exe
PID 4280 wrote to memory of 4636	4280	iSjc3t29EfjInqO.exe	schtasks.exe
PID 4280 wrote to memory of 3656	4280	iSjc3t29EfjInqO.exe	RegSvcs.exe
PID 4280 wrote to memory of 3656	4280	iSjc3t29EfjInqO.exe	RegSvcs.exe
PID 4280 wrote to memory of 3656	4280	iSjc3t29EfjInqO.exe	RegSvcs.exe
PID 4280 wrote to memory of 3628	4280	iSjc3t29EfjInqO.exe	RegSvcs.exe
PID 4280 wrote to memory of 3628	4280	iSjc3t29EfjInqO.exe	RegSvcs.exe
PID 4280 wrote to memory of 3628	4280	iSjc3t29EfjInqO.exe	RegSvcs.exe
PID 4280 wrote to memory of 3224	4280	iSjc3t29EfjInqO.exe	RegSvcs.exe
PID 4280 wrote to memory of 3224	4280	iSjc3t29EfjInqO.exe	RegSvcs.exe
PID 4280 wrote to memory of 3224	4280	iSjc3t29EfjInqO.exe	RegSvcs.exe
PID 4280 wrote to memory of 3224	4280	iSjc3t29EfjInqO.exe	RegSvcs.exe
PID 4280 wrote to memory of 3224	4280	iSjc3t29EfjInqO.exe	RegSvcs.exe
PID 4280 wrote to memory of 3224	4280	iSjc3t29EfjInqO.exe	RegSvcs.exe
PID 4280 wrote to memory of 3224	4280	iSjc3t29EfjInqO.exe	RegSvcs.exe
PID 4280 wrote to memory of 3224	4280	iSjc3t29EfjInqO.exe	RegSvcs.exe
PID 1252 wrote to memory of 1668	1252	web.exe	netsh.exe
PID 1252 wrote to memory of 1668	1252	web.exe	netsh.exe
PID 1252 wrote to memory of 1668	1252	web.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

web.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	web.exe

outlook_win_path 1 IoCs

Processes:

web.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	web.exe

C:\Users\Admin\AppData\Local\Temp\img3181-2020-876567.scr
"C:\Users\Admin\AppData\Local\Temp\img3181-2020-876567.scr" /S
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4848

C:\Windows\SysWOW64\notepad.exe
"C:\Windows\system32\notepad.exe"
2⤵
- Drops startup file
- NTFS ADS
- Suspicious use of WriteProcessMemory
PID:3980

C:\Users\Admin\AppData\Roaming\startup\web.exe
"C:\Users\Admin\AppData\Roaming\startup\web.exe"
3⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4236

C:\Users\Admin\AppData\Local\Temp\iSjc3t29EfjInqO.exe
"C:\Users\Admin\AppData\Local\Temp\iSjc3t29EfjInqO.exe"
4⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4280

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\GSECCr" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2BCE.tmp"
5⤵
- Creates scheduled task(s)
PID:4636

C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
"{path}"
5⤵
PID:3656

C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
"{path}"
5⤵
PID:3628

C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
"{path}"
5⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:3224

C:\Users\Admin\AppData\Roaming\startup\web.exe
"C:\Users\Admin\AppData\Roaming\startup\web.exe"
4⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: SetClipboardViewer
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:1252

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
5⤵
PID:1668

C:\Users\Admin\AppData\Roaming\startup\web.exe
"C:\Users\Admin\AppData\Roaming\startup\web.exe" 2 1252 240654265
4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:4016

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4104 --field-trial-handle=2280,i,11703952675008463361,17436195144517971517,262144 --variations-seed-version /prefetch:8
1⤵
PID:1700

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Credentials in Registry

T1552.002

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\iSjc3t29EfjInqO.exe
Filesize
391KB

MD5
ee085d20d05b3485e7e422f2c6194a8c

SHA1
0790dd30549fc3d8161ffc59eac642b1c436a117

SHA256
b0f584b01ced1030686cd251ce83152669b8372a64d67378c0757bfe3ad80c1d

SHA512
29b757a4dc42a1dbd88bb61f96e189a4f5a2da0620706bdf8431f23ca59accc5252fa7bbd36b8836ff3564aa66c1a0a7b19fad7df63fcde50f794e59d89b25bb

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp2BCE.tmp
Filesize
1KB

MD5
4a7622986b47becf8ea2d46a27a752af

SHA1
156f73c86017a8ecff7e5fae675269c2c185804e

SHA256
2c9166a32d9573457bf3613a3d777fb4b85e503a74728a6addbf0049b93ec561

SHA512
4ef1dbc6d773d0d2beed7a01397964e1754c160f2650b2a4f6662a3aa190e5b962694ae54f6a457e7892d774825d642d6db771454e34eb3423100feaa149a792

Download Submit
C:\Users\Admin\AppData\Roaming\startup\web.exe
Filesize
1.3MB

MD5
76aabc4357230893d7c0171d7a088831

SHA1
097b4609dcd3537bd89351d6a90604cf7da4b65d

SHA256
dcc39ce58dfbb4a76b2cc553cd796cb23f0c6b18ec44a3eeef7303d470002139

SHA512
78dcc95267f04be2ad5860aad49b4f64c2fd9157cfed6ca66b672593bc7f35eeedb866b53e607d5cc57258e202af1a0468425ab9c8d5b8cf06a2acd764c89b28

Download Submit
memory/1252-49-0x0000000004B60000-0x0000000004BFC000-memory.dmp

Filesize
624KB

Download
memory/1252-30-0x0000000000400000-0x00000000004B1000-memory.dmp

Filesize
708KB

Download
memory/1252-73-0x00000000007C0000-0x00000000007CA000-memory.dmp

Filesize
40KB

Download
memory/1252-64-0x0000000005F00000-0x0000000005F50000-memory.dmp

Filesize
320KB

Download
memory/1252-60-0x0000000000400000-0x00000000004B1000-memory.dmp

Filesize
708KB

Download
memory/1252-25-0x0000000000400000-0x00000000004B1000-memory.dmp

Filesize
708KB

Download
memory/1252-28-0x0000000000400000-0x00000000004B1000-memory.dmp

Filesize
708KB

Download
memory/1252-35-0x0000000000400000-0x00000000004B1000-memory.dmp

Filesize
708KB

Download
memory/1252-33-0x00000000008B0000-0x0000000000902000-memory.dmp

Filesize
328KB

Download
memory/1252-32-0x00000000008B0000-0x0000000000902000-memory.dmp

Filesize
328KB

Download
memory/1252-31-0x0000000000400000-0x00000000004B1000-memory.dmp

Filesize
708KB

Download
memory/1252-52-0x0000000005960000-0x00000000059C6000-memory.dmp

Filesize
408KB

Download
memory/1252-29-0x0000000000400000-0x00000000004B1000-memory.dmp

Filesize
708KB

Download
memory/1252-47-0x0000000004D80000-0x0000000005324000-memory.dmp

Filesize
5.6MB

Download
memory/1252-48-0x0000000004A80000-0x0000000004B12000-memory.dmp

Filesize
584KB

Download
memory/1252-51-0x0000000005930000-0x0000000005948000-memory.dmp

Filesize
96KB

Download
memory/3224-58-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3980-3-0x00000000007D0000-0x00000000007D1000-memory.dmp

Filesize
4KB

Download
memory/4016-50-0x0000000000400000-0x0000000000554000-memory.dmp

Filesize
1.3MB

Download
memory/4236-12-0x0000000000400000-0x0000000000554000-memory.dmp

Filesize
1.3MB

Download
memory/4236-11-0x0000000000910000-0x0000000000911000-memory.dmp

Filesize
4KB

Download
memory/4848-0-0x0000000002400000-0x0000000002401000-memory.dmp

Filesize
4KB

Download
memory/4848-1-0x0000000000460000-0x0000000000467000-memory.dmp

Filesize
28KB

Download
memory/4848-2-0x0000000000400000-0x0000000000554000-memory.dmp

Filesize
1.3MB

Download