agenttesla | 9f66ca07528645997cd017a8b3e057b0c4176b1c90c74173d5da900c60c208be

Analysis

max time kernel
47s
max time network
139s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
08-02-2023 09:55

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General

Target

8aba0e5b9847ec754c70691ce5b2ebe888ea4d3599a3fd7d6b431603ba2d77ad.exe
Size

707KB
MD5

5e3c0b08904d967d151047a51ca76cc1
SHA1

6b7893406f444e7132fec10633c9aa63413d3b1f
SHA256

8aba0e5b9847ec754c70691ce5b2ebe888ea4d3599a3fd7d6b431603ba2d77ad
SHA512

1f476c300baefadd6bf2adc4fc8f707d3143902905c2626d95f64802f3f21fc45a6024ff5bf9ea9cf5e29bc0482b5f2f6a459700bb6003e46a7ebb526ff5edef
SSDEEP

6144:cYa6uW0O0WqiBiGei7FTjUosytWnSS1SqYXtbVMXGzcA+KDOTLf2EYs1/rnDVDPv:cYWWqyTTVNVMWzzhAKEL/DpLnFyoLFh

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

https://api.telegram.org/bot5661887202:AAEdmGK268nwK3Q0KQ-lOdGhXERPNRUJtz4/

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
Executes dropped EXE 2 IoCs

Processes:

bbmyyz.exebbmyyz.exe

pid process

1208 bbmyyz.exe
908 bbmyyz.exe

pid	process
1208	bbmyyz.exe
908	bbmyyz.exe

Loads dropped DLL 3 IoCs

Processes:

8aba0e5b9847ec754c70691ce5b2ebe888ea4d3599a3fd7d6b431603ba2d77ad.exebbmyyz.exe

pid	process
1380	8aba0e5b9847ec754c70691ce5b2ebe888ea4d3599a3fd7d6b431603ba2d77ad.exe
1380	8aba0e5b9847ec754c70691ce5b2ebe888ea4d3599a3fd7d6b431603ba2d77ad.exe
1208	bbmyyz.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:

bbmyyz.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	bbmyyz.exe
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	bbmyyz.exe
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	bbmyyz.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

bbmyyz.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\vsbbb = "C:\\Users\\Admin\\AppData\\Roaming\\khyh\\rcanrxn.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\bbmyyz.exe\" C:\\Users\\Admin\\AppData\\Local\\Temp\\n"	bbmyyz.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.

Processes:

flow ioc

3 api.ipify.org
4 api.ipify.org
Suspicious use of SetThreadContext 1 IoCs

Processes:

bbmyyz.exe

description pid process target process

PID 1208 set thread context of 908 1208 bbmyyz.exe bbmyyz.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: MapViewOfSection 1 IoCs

Processes:

bbmyyz.exe

pid process

1208 bbmyyz.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

bbmyyz.exe

description pid process

Token: SeDebugPrivilege 908 bbmyyz.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

bbmyyz.exe

pid process

908 bbmyyz.exe

flow	ioc
3	api.ipify.org
4	api.ipify.org

description	pid	process	target process
PID 1208 set thread context of 908	1208	bbmyyz.exe	bbmyyz.exe

pid	process
1208	bbmyyz.exe

description	pid	process
Token: SeDebugPrivilege	908	bbmyyz.exe

pid	process
908	bbmyyz.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

8aba0e5b9847ec754c70691ce5b2ebe888ea4d3599a3fd7d6b431603ba2d77ad.exebbmyyz.exe

description	pid	process	target process
PID 1380 wrote to memory of 1208	1380	8aba0e5b9847ec754c70691ce5b2ebe888ea4d3599a3fd7d6b431603ba2d77ad.exe	bbmyyz.exe
PID 1380 wrote to memory of 1208	1380	8aba0e5b9847ec754c70691ce5b2ebe888ea4d3599a3fd7d6b431603ba2d77ad.exe	bbmyyz.exe
PID 1380 wrote to memory of 1208	1380	8aba0e5b9847ec754c70691ce5b2ebe888ea4d3599a3fd7d6b431603ba2d77ad.exe	bbmyyz.exe
PID 1380 wrote to memory of 1208	1380	8aba0e5b9847ec754c70691ce5b2ebe888ea4d3599a3fd7d6b431603ba2d77ad.exe	bbmyyz.exe
PID 1208 wrote to memory of 908	1208	bbmyyz.exe	bbmyyz.exe
PID 1208 wrote to memory of 908	1208	bbmyyz.exe	bbmyyz.exe
PID 1208 wrote to memory of 908	1208	bbmyyz.exe	bbmyyz.exe
PID 1208 wrote to memory of 908	1208	bbmyyz.exe	bbmyyz.exe
PID 1208 wrote to memory of 908	1208	bbmyyz.exe	bbmyyz.exe

outlook_office_path 1 IoCs

Processes:

bbmyyz.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	bbmyyz.exe

outlook_win_path 1 IoCs

Processes:

bbmyyz.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	bbmyyz.exe

C:\Users\Admin\AppData\Local\Temp\8aba0e5b9847ec754c70691ce5b2ebe888ea4d3599a3fd7d6b431603ba2d77ad.exe
"C:\Users\Admin\AppData\Local\Temp\8aba0e5b9847ec754c70691ce5b2ebe888ea4d3599a3fd7d6b431603ba2d77ad.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1380

C:\Users\Admin\AppData\Local\Temp\bbmyyz.exe
"C:\Users\Admin\AppData\Local\Temp\bbmyyz.exe" C:\Users\Admin\AppData\Local\Temp\nmujlizev.ng
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1208

C:\Users\Admin\AppData\Local\Temp\bbmyyz.exe
"C:\Users\Admin\AppData\Local\Temp\bbmyyz.exe"
3⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
PID:908

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

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\bbmyyz.exe

Filesize
80KB

MD5
d99e1d848e4eefcbb814ccfb392ab3e9

SHA1
ab0750bc7989ee00557f32f83f27b933f79c514a

SHA256
48c3b588acde2f4ffa0199bb20421187c009d9cea574ff42b55e4c599149576e

SHA512
d70869d861125fba43d9bca9becc844c481c7ec04c6f29be2e09628b0cfbb72c90bd9ceb1403bc562eef3dbdcdcc9f7b2580fcf1db89fdc2b74664f0259c3928

Download Submit
C:\Users\Admin\AppData\Local\Temp\bbmyyz.exe

Filesize
80KB

MD5
d99e1d848e4eefcbb814ccfb392ab3e9

SHA1
ab0750bc7989ee00557f32f83f27b933f79c514a

SHA256
48c3b588acde2f4ffa0199bb20421187c009d9cea574ff42b55e4c599149576e

SHA512
d70869d861125fba43d9bca9becc844c481c7ec04c6f29be2e09628b0cfbb72c90bd9ceb1403bc562eef3dbdcdcc9f7b2580fcf1db89fdc2b74664f0259c3928

Download Submit
C:\Users\Admin\AppData\Local\Temp\bbmyyz.exe

Filesize
80KB

MD5
d99e1d848e4eefcbb814ccfb392ab3e9

SHA1
ab0750bc7989ee00557f32f83f27b933f79c514a

SHA256
48c3b588acde2f4ffa0199bb20421187c009d9cea574ff42b55e4c599149576e

SHA512
d70869d861125fba43d9bca9becc844c481c7ec04c6f29be2e09628b0cfbb72c90bd9ceb1403bc562eef3dbdcdcc9f7b2580fcf1db89fdc2b74664f0259c3928

Download Submit
C:\Users\Admin\AppData\Local\Temp\nmujlizev.ng

Filesize
7KB

MD5
5d64f2aa8f76cc3eac6ef81acae2be19

SHA1
6be992d98667c4b31fd0fba388a36c5a46a699d7

SHA256
f052ee1dfe8ed48c03c52f778c8bf9be9b410f8c5730fc7175052675929328b3

SHA512
e283ae051843ccc7b69a8f502a4c4e23b3dad5f495b619bdc83cb604294cb035524a55a348cac1c03e5efc3e9fb20a01080f418a84b61192cc74eed7abfad8a8

Download Submit
C:\Users\Admin\AppData\Local\Temp\zuncgkkzmua.ssu

Filesize
266KB

MD5
e756e6b72dd063d5f7aff061e3f5ccf2

SHA1
0cccb80542d594a1f0196b627f4a01241de2d57e

SHA256
36ccedad0c40453374bef154070dbe68d48e7884b4fd779e57dfaac1c5bc5654

SHA512
25a3f3dc261a7a15a68291064456009fa2154098c4f4bc7474a5672fede7507390da30031912887c7004377ed23243f511673af942ebbc5024a313f9554c0e86

Download Submit
\Users\Admin\AppData\Local\Temp\bbmyyz.exe

Filesize
80KB

MD5
d99e1d848e4eefcbb814ccfb392ab3e9

SHA1
ab0750bc7989ee00557f32f83f27b933f79c514a

SHA256
48c3b588acde2f4ffa0199bb20421187c009d9cea574ff42b55e4c599149576e

SHA512
d70869d861125fba43d9bca9becc844c481c7ec04c6f29be2e09628b0cfbb72c90bd9ceb1403bc562eef3dbdcdcc9f7b2580fcf1db89fdc2b74664f0259c3928

Download Submit
\Users\Admin\AppData\Local\Temp\bbmyyz.exe

Filesize
80KB

MD5
d99e1d848e4eefcbb814ccfb392ab3e9

SHA1
ab0750bc7989ee00557f32f83f27b933f79c514a

SHA256
48c3b588acde2f4ffa0199bb20421187c009d9cea574ff42b55e4c599149576e

SHA512
d70869d861125fba43d9bca9becc844c481c7ec04c6f29be2e09628b0cfbb72c90bd9ceb1403bc562eef3dbdcdcc9f7b2580fcf1db89fdc2b74664f0259c3928

Download Submit
\Users\Admin\AppData\Local\Temp\bbmyyz.exe

Filesize
80KB

MD5
d99e1d848e4eefcbb814ccfb392ab3e9

SHA1
ab0750bc7989ee00557f32f83f27b933f79c514a

SHA256
48c3b588acde2f4ffa0199bb20421187c009d9cea574ff42b55e4c599149576e

SHA512
d70869d861125fba43d9bca9becc844c481c7ec04c6f29be2e09628b0cfbb72c90bd9ceb1403bc562eef3dbdcdcc9f7b2580fcf1db89fdc2b74664f0259c3928

Download Submit
memory/908-64-0x0000000000401896-mapping.dmp

Download
memory/908-67-0x0000000000180000-0x00000000001B0000-memory.dmp

Filesize
192KB

Download
memory/908-68-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1208-57-0x0000000000000000-mapping.dmp

Download
memory/1380-54-0x00000000757A1000-0x00000000757A3000-memory.dmp

Filesize
8KB

Download