agenttesla | 283e544c4bb4dcba6f6b982e53d33bb1b2bf342314f92b144bc98f4ebafbce05

Analysis

max time kernel
140s
max time network
97s
platform
windows7_x64
resource
win7v200430
submitted
10-07-2020 10:21

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

HALKBANK.exe
Size

2.8MB
MD5

fe768517f29326fe6c77a2ec75ebb115
SHA1

5f6996bc64096c6603ff732cf80b7a0336e75d45
SHA256

283e544c4bb4dcba6f6b982e53d33bb1b2bf342314f92b144bc98f4ebafbce05
SHA512

99a58f69eb138c29e2360a057536ae242b69d7c5cd1b71d06f5b9dcf3d74ecea887a6af0716f43f373c2bea3d2ab879d51526bfcc2ff74967e6c88a945ea1d14

Score

10^/10

agenttesla masslogger keylogger persistence ransomware spyware stealer trojan

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\C8A579F880\Log.txt

Family

masslogger

Ransom Note

<|| v2.1.0.0 ||> User Name: Admin IP: 154.61.71.13 Location: United States Windows OS: Microsoft Windows 7 Professional 64bit Windows Serial Key: HYF8J-CVRMY-CM74G-RPHKF-PW487 CPU: Persocon Processor 2.5+ GPU: Standard VGA Graphics Adapter AV: NA Screen Resolution: 1280x720 Current Time: 7/10/2020 12:22:11 PM MassLogger Started: 7/10/2020 12:22:07 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes: <|| WD Exclusion ||> Disabled <|| Binder ||> Disabled <|| Downloader ||> Disabled <|| USB Spread ||> Disabled <|| Bot Killer ||> Disabled <|| Window Searcher ||> Disabled <|| Search And Upload ||> Disabled <|| Telegram Desktop ||> Not Installed <|| Pidgin ||> Not Installed <|| FileZilla ||> Not Installed <|| Discord Tokken ||> Not Installed <|| NordVPN ||> Not Installed <|| Outlook ||> Not Installed <|| FoxMail ||> Not Installed <|| Thunderbird ||> Not Installed <|| FireFox ||> Not Found <|| QQ Browser ||> Not Installed <|| Chromium Recovery ||> Not Installed or Not Found <|| Keylogger And Clipboard ||> Disabled

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.decoplanet.net
Port:
587
Username:
[email protected]
Password:
ayla1939

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
stealer spyware masslogger

MassLogger Main Payload 6 IoCs

Processes:

resource	yara_rule
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\chromee.exe	family_masslogger
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\chromee.exe	family_masslogger
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\chromee.exe	family_masslogger
behavioral1/memory/2008-22-0x000000000049419E-mapping.dmp	family_masslogger
behavioral1/memory/2008-24-0x0000000000090000-0x000000000012A000-memory.dmp	family_masslogger
behavioral1/memory/2008-25-0x0000000000090000-0x000000000012A000-memory.dmp	family_masslogger

MassLogger log file 1 IoCs
Detects a log file produced by MassLogger.

Processes:

yara_rule

masslogger_log_file

yara_rule
masslogger_log_file

AgentTesla Payload 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1336-10-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1336-11-0x0000000000446EBE-mapping.dmp	family_agenttesla
behavioral1/memory/1336-13-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1336-14-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla

Executes dropped EXE 3 IoCs

Processes:

chromee.exeRegAsm.exeInstallUtil.exe

pid process

1844 chromee.exe
1336 RegAsm.exe
2008 InstallUtil.exe

pid	process
1844	chromee.exe
1336	RegAsm.exe
2008	InstallUtil.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:

InstallUtil.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-910373003-3952921535-3480519689-1000\Control Panel\International\Geo\Nation	InstallUtil.exe

Loads dropped DLL 4 IoCs

Processes:

HALKBANK.exeRegAsm.exechromee.exe

pid process

1492 HALKBANK.exe
1492 HALKBANK.exe
1336 RegAsm.exe
1844 chromee.exe
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware

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

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

Data from Local System
T1005

Credentials in Files
T1081

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

reg.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-910373003-3952921535-3480519689-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-910373003-3952921535-3480519689-1000\Software\Microsoft\Windows\CurrentVersion\Run\chromee = "C:\\Windows\\system32\\pcalua.exe -a C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\chromee.exe"	reg.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.

Processes:

flow ioc

4 api.ipify.org

flow	ioc
4	api.ipify.org

Suspicious use of SetThreadContext 2 IoCs

Processes:

HALKBANK.exechromee.exe

description	pid	process	target process
PID 1492 set thread context of 1336	1492	HALKBANK.exe	RegAsm.exe
PID 1844 set thread context of 2008	1844	chromee.exe	InstallUtil.exe

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 9 IoCs

Processes:

HALKBANK.exechromee.exeRegAsm.exeInstallUtil.exe

pid	process
1492	HALKBANK.exe
1492	HALKBANK.exe
1492	HALKBANK.exe
1844	chromee.exe
1336	RegAsm.exe
1336	RegAsm.exe
1844	chromee.exe
1844	chromee.exe
2008	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

HALKBANK.exechromee.exeRegAsm.exeInstallUtil.exe

description	pid	process
Token: SeDebugPrivilege	1492	HALKBANK.exe
Token: SeDebugPrivilege	1844	chromee.exe
Token: SeDebugPrivilege	1336	RegAsm.exe
Token: SeDebugPrivilege	2008	InstallUtil.exe

Suspicious use of WriteProcessMemory 36 IoCs

Processes:

HALKBANK.execmd.exechromee.exe

description	pid	process	target process
PID 1492 wrote to memory of 1844	1492	HALKBANK.exe	chromee.exe
PID 1492 wrote to memory of 1844	1492	HALKBANK.exe	chromee.exe
PID 1492 wrote to memory of 1844	1492	HALKBANK.exe	chromee.exe
PID 1492 wrote to memory of 1844	1492	HALKBANK.exe	chromee.exe
PID 1492 wrote to memory of 756	1492	HALKBANK.exe	cmd.exe
PID 1492 wrote to memory of 756	1492	HALKBANK.exe	cmd.exe
PID 1492 wrote to memory of 756	1492	HALKBANK.exe	cmd.exe
PID 1492 wrote to memory of 756	1492	HALKBANK.exe	cmd.exe
PID 756 wrote to memory of 1256	756	cmd.exe	reg.exe
PID 756 wrote to memory of 1256	756	cmd.exe	reg.exe
PID 756 wrote to memory of 1256	756	cmd.exe	reg.exe
PID 756 wrote to memory of 1256	756	cmd.exe	reg.exe
PID 1492 wrote to memory of 1336	1492	HALKBANK.exe	RegAsm.exe
PID 1492 wrote to memory of 1336	1492	HALKBANK.exe	RegAsm.exe
PID 1492 wrote to memory of 1336	1492	HALKBANK.exe	RegAsm.exe
PID 1492 wrote to memory of 1336	1492	HALKBANK.exe	RegAsm.exe
PID 1492 wrote to memory of 1336	1492	HALKBANK.exe	RegAsm.exe
PID 1492 wrote to memory of 1336	1492	HALKBANK.exe	RegAsm.exe
PID 1492 wrote to memory of 1336	1492	HALKBANK.exe	RegAsm.exe
PID 1492 wrote to memory of 1336	1492	HALKBANK.exe	RegAsm.exe
PID 1492 wrote to memory of 1336	1492	HALKBANK.exe	RegAsm.exe
PID 1492 wrote to memory of 1336	1492	HALKBANK.exe	RegAsm.exe
PID 1492 wrote to memory of 1336	1492	HALKBANK.exe	RegAsm.exe
PID 1492 wrote to memory of 1336	1492	HALKBANK.exe	RegAsm.exe
PID 1844 wrote to memory of 2008	1844	chromee.exe	InstallUtil.exe
PID 1844 wrote to memory of 2008	1844	chromee.exe	InstallUtil.exe
PID 1844 wrote to memory of 2008	1844	chromee.exe	InstallUtil.exe
PID 1844 wrote to memory of 2008	1844	chromee.exe	InstallUtil.exe
PID 1844 wrote to memory of 2008	1844	chromee.exe	InstallUtil.exe
PID 1844 wrote to memory of 2008	1844	chromee.exe	InstallUtil.exe
PID 1844 wrote to memory of 2008	1844	chromee.exe	InstallUtil.exe
PID 1844 wrote to memory of 2008	1844	chromee.exe	InstallUtil.exe
PID 1844 wrote to memory of 2008	1844	chromee.exe	InstallUtil.exe
PID 1844 wrote to memory of 2008	1844	chromee.exe	InstallUtil.exe
PID 1844 wrote to memory of 2008	1844	chromee.exe	InstallUtil.exe
PID 1844 wrote to memory of 2008	1844	chromee.exe	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\HALKBANK.exe
"C:\Users\Admin\AppData\Local\Temp\HALKBANK.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1492

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\chromee.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\chromee.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1844

C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
"C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
3⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2008

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v chromee /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\chromee.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:756

C:\Windows\SysWOW64\reg.exe
REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v chromee /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\chromee.exe"
3⤵
- Adds Run key to start application
PID:1256

C:\Users\Admin\AppData\Local\Temp\RegAsm.exe
"C:\Users\Admin\AppData\Local\Temp\RegAsm.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1336

Network

MITRE ATT&CK Matrix ATT&CK 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

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
C:\Users\Admin\AppData\Local\Temp\RegAsm.exe
MD5
b58b926c3574d28d5b7fdd2ca3ec30d5

SHA1
d260c4ffd603a9cfc057fcb83d678b1cecdf86f9

SHA256
6e70b56d748c4ccab13cc8a055d3795ea0dd95fe3b70568d7d3ac0c6621140a3

SHA512
b13cb998822b716b695013bcd6dec62a2290567d0d1743b2d982ca084235cf69c6ea1fc91c9d4e62657c6f9e102c7c60e81296ab055ffe43b887c5f8ec8958ab

Download Submit
C:\Users\Admin\AppData\Local\Temp\RegAsm.exe
MD5
b58b926c3574d28d5b7fdd2ca3ec30d5

SHA1
d260c4ffd603a9cfc057fcb83d678b1cecdf86f9

SHA256
6e70b56d748c4ccab13cc8a055d3795ea0dd95fe3b70568d7d3ac0c6621140a3

SHA512
b13cb998822b716b695013bcd6dec62a2290567d0d1743b2d982ca084235cf69c6ea1fc91c9d4e62657c6f9e102c7c60e81296ab055ffe43b887c5f8ec8958ab

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\chromee.exe
MD5
9a4460e1522d6e13d6f326674524c405

SHA1
d8484d2d265f4f5d83917532465210ddf658aa08

SHA256
0122fb26a12f86f9e8eef0498a4d7f350846885bdb8b6ced21a68baa0e73be6b

SHA512
0bd99764516d33191d5bf7b2c3b1f247aad039136892f39c4941c8aa07f4c1cc3935949c1d8c91ec4a28ec3125302357390df9be6187720ccdb0a97221bfa1a2

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\chromee.exe
MD5
9a4460e1522d6e13d6f326674524c405

SHA1
d8484d2d265f4f5d83917532465210ddf658aa08

SHA256
0122fb26a12f86f9e8eef0498a4d7f350846885bdb8b6ced21a68baa0e73be6b

SHA512
0bd99764516d33191d5bf7b2c3b1f247aad039136892f39c4941c8aa07f4c1cc3935949c1d8c91ec4a28ec3125302357390df9be6187720ccdb0a97221bfa1a2

Download Submit
\Users\Admin\AppData\Local\Temp\InstallUtil.exe
MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
\Users\Admin\AppData\Local\Temp\RegAsm.exe
MD5
b58b926c3574d28d5b7fdd2ca3ec30d5

SHA1
d260c4ffd603a9cfc057fcb83d678b1cecdf86f9

SHA256
6e70b56d748c4ccab13cc8a055d3795ea0dd95fe3b70568d7d3ac0c6621140a3

SHA512
b13cb998822b716b695013bcd6dec62a2290567d0d1743b2d982ca084235cf69c6ea1fc91c9d4e62657c6f9e102c7c60e81296ab055ffe43b887c5f8ec8958ab

Download Submit
\Users\Admin\AppData\Local\Temp\RegAsm.exe
MD5
b58b926c3574d28d5b7fdd2ca3ec30d5

SHA1
d260c4ffd603a9cfc057fcb83d678b1cecdf86f9

SHA256
6e70b56d748c4ccab13cc8a055d3795ea0dd95fe3b70568d7d3ac0c6621140a3

SHA512
b13cb998822b716b695013bcd6dec62a2290567d0d1743b2d982ca084235cf69c6ea1fc91c9d4e62657c6f9e102c7c60e81296ab055ffe43b887c5f8ec8958ab

Download Submit
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\chromee.exe
MD5
9a4460e1522d6e13d6f326674524c405

SHA1
d8484d2d265f4f5d83917532465210ddf658aa08

SHA256
0122fb26a12f86f9e8eef0498a4d7f350846885bdb8b6ced21a68baa0e73be6b

SHA512
0bd99764516d33191d5bf7b2c3b1f247aad039136892f39c4941c8aa07f4c1cc3935949c1d8c91ec4a28ec3125302357390df9be6187720ccdb0a97221bfa1a2

Download Submit
memory/756-7-0x0000000000000000-mapping.dmp

Download
memory/1256-8-0x0000000000000000-mapping.dmp

Download
memory/1336-14-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1336-13-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1336-11-0x0000000000446EBE-mapping.dmp

Download
memory/1336-10-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1492-1-0x0000000000000000-0x0000000000000000-disk.dmp

Download
memory/1844-4-0x0000000000000000-mapping.dmp

Download
memory/2008-22-0x000000000049419E-mapping.dmp

Download
memory/2008-24-0x0000000000090000-0x000000000012A000-memory.dmp

Filesize
616KB

Download
memory/2008-25-0x0000000000090000-0x000000000012A000-memory.dmp

Filesize
616KB

Download