agenttesla | abef74a699cc498ba7b686dc2a3199e66d485dba0d79aa7e932e381f373baafd

Analysis

max time kernel
117s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
06/05/2022, 16:51

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General

Target
Invoice.exe
Size 264KB
Sample220506-vcs6dschdr
SHA256 3ce612b0f9fe428cee187e2c135bb42db9054307d1704101bb54f5235dd1bdd9
MD5 8078120fd57fe4dc202854d2d49e1fb8
SHA1 6f8986564d605d54bfd786bb2f02969ca3235cee
SHA512 9935bd012242e0f6bce4457ba6b09dc26cc926638dc55a9650d27ae45844f8e4242757b3b5c9a068cdc5e8867a8d052470784b7048989b3862977f960bbcbc06
MD5 SHA1 SHA512

Score

10^/10

agenttesla collection keylogger spyware stealer suricata trojan

Malware Config

Extracted

Credentials

Protocol
smtp
Host
mail.avizatechnologies.com
Port
587
Username
[email protected]
Password
s?I%3su#oFtB

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
suricata: ET MALWARE AgentTesla Exfil Via SMTP
suricata: ET MALWARE AgentTesla Exfil Via SMTP
suricata

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	ihuulr.exe

Executes dropped EXE 2 IoCs

pid	Process
2184	ihuulr.exe
4084	ihuulr.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

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	ihuulr.exe
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	ihuulr.exe
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	ihuulr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2184 set thread context of 4084	2184	ihuulr.exe	82

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 2 IoCs

pid	Process
4084	ihuulr.exe
4084	ihuulr.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4084	ihuulr.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2164 wrote to memory of 2184	2164	Invoice.exe	81
PID 2164 wrote to memory of 2184	2164	Invoice.exe	81
PID 2164 wrote to memory of 2184	2164	Invoice.exe	81
PID 2184 wrote to memory of 4084	2184	ihuulr.exe	82
PID 2184 wrote to memory of 4084	2184	ihuulr.exe	82
PID 2184 wrote to memory of 4084	2184	ihuulr.exe	82
PID 2184 wrote to memory of 4084	2184	ihuulr.exe	82
PID 2184 wrote to memory of 4084	2184	ihuulr.exe	82
PID 2184 wrote to memory of 4084	2184	ihuulr.exe	82
PID 2184 wrote to memory of 4084	2184	ihuulr.exe	82
PID 2184 wrote to memory of 4084	2184	ihuulr.exe	82
PID 2184 wrote to memory of 4084	2184	ihuulr.exe	82

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	ihuulr.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	ihuulr.exe

C:\Users\Admin\AppData\Local\Temp\Invoice.exe
"C:\Users\Admin\AppData\Local\Temp\Invoice.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2164
- C:\Users\Admin\AppData\Local\Temp\ihuulr.exe
  C:\Users\Admin\AppData\Local\Temp\ihuulr.exe C:\Users\Admin\AppData\Local\Temp\hwdjciogm
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:2184
- - C:\Users\Admin\AppData\Local\Temp\ihuulr.exe
    C:\Users\Admin\AppData\Local\Temp\ihuulr.exe C:\Users\Admin\AppData\Local\Temp\hwdjciogm
    3⤵
    - Drops file in Drivers directory
    - Executes dropped EXE
    - Accesses Microsoft Outlook profiles
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - outlook_office_path
    - outlook_win_path
    PID:4084

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

Replay Monitor

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Downloads

hwdjciogm

Path C:\Users\Admin\AppData\Local\Temp\hwdjciogm
Size 4KB
SHA256 e0eced93bc19f4ba9bcbcd597b4a1029bb660e8ebc484f0c02a66fc6187566ed
MD5 181d01514f8d0f92922f439fb574343d
SHA1 ab951458782efe0bcb468f4c8327bf500b8bcded
SHA512 d8e50b5786bd3073ced14133d3bf11fcfb51db8d0ccc163aa87220cca665af47a5a825531d94eb5bfba932d2a6773de4672c739e02b24a7bc355373fd0469b67
SSDEEP 96:XPOx8OhX8qGjpd6eXLz5sbMblPMqsLMA8fW90NUEsv67F5O5:fOx8OhX/iPVzqg5UqEM7U9Enp5O5
MD5 SHA1 SHA512 SSDEEP

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ihuulr.exe

Path C:\Users\Admin\AppData\Local\Temp\ihuulr.exe
Size 6KB
SHA256 2643da42e631cd24d8530c7574a960d7df7440502a8d69c079c2224ef56b078c
MD5 17083e6c6fc0466ca21c2f8097ab2bca
SHA1 6687193c19f17b507cc5bf6ffc859dd5e8ae89ac
SHA512 1316057fd1bc417de0af251a232d7fead58e2044891854ac2d93ee6274303d947948eefff2aaa1b10f54bb24b011114c1e1f054da1d5eacb1fa0f18e525ea410
SSDEEP 96:LvL2uH+ohK4/s+MtCqc5j/1QscthPmoyncx:77e0BdMVEt5cthPmoyn
MD5 SHA1 SHA512 SSDEEP

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ihuulr.exe

Path C:\Users\Admin\AppData\Local\Temp\ihuulr.exe
Size 6KB
SHA256 2643da42e631cd24d8530c7574a960d7df7440502a8d69c079c2224ef56b078c
MD5 17083e6c6fc0466ca21c2f8097ab2bca
SHA1 6687193c19f17b507cc5bf6ffc859dd5e8ae89ac
SHA512 1316057fd1bc417de0af251a232d7fead58e2044891854ac2d93ee6274303d947948eefff2aaa1b10f54bb24b011114c1e1f054da1d5eacb1fa0f18e525ea410
SSDEEP 96:LvL2uH+ohK4/s+MtCqc5j/1QscthPmoyncx:77e0BdMVEt5cthPmoyn
MD5 SHA1 SHA512 SSDEEP

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ihuulr.exe

Path C:\Users\Admin\AppData\Local\Temp\ihuulr.exe
Size 6KB
SHA256 2643da42e631cd24d8530c7574a960d7df7440502a8d69c079c2224ef56b078c
MD5 17083e6c6fc0466ca21c2f8097ab2bca
SHA1 6687193c19f17b507cc5bf6ffc859dd5e8ae89ac
SHA512 1316057fd1bc417de0af251a232d7fead58e2044891854ac2d93ee6274303d947948eefff2aaa1b10f54bb24b011114c1e1f054da1d5eacb1fa0f18e525ea410
SSDEEP 96:LvL2uH+ohK4/s+MtCqc5j/1QscthPmoyncx:77e0BdMVEt5cthPmoyn
MD5 SHA1 SHA512 SSDEEP

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kq2hnxqjkrmrep9hxji

Path C:\Users\Admin\AppData\Local\Temp\kq2hnxqjkrmrep9hxji
Size 279KB
SHA256 bcbe52d6b884a67eaf37759f9443e9c21be22ad2a0fce82c4cebc443e6c8ab3a
MD5 a6953697d50469bf161694f213499277
SHA1 113ec3921181227a0f69955c78b7022545792fa4
SHA512 c0c3b7b03256ae1e2fc8ac2ac5fe7cc8eb370ea27ff828fe40189030151991be7fe6e4cbbabd8c93b2993dc42d705d0e2bfb665ffffc95b0b313dc88b740039b
SSDEEP 6144:8ereKZr0v7HdaKnmc4dOIxnYKpZVqU+b0G5Uv+xSM:jn0DHsxDbVY0v2xV
MD5 SHA1 SHA512 SSDEEP

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memory/4084-138-0x0000000000400000-0x0000000000449000-memory.dmp

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memory/4084-136-0x0000000000400000-0x0000000000449000-memory.dmp

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memory/4084-139-0x0000000000400000-0x0000000000449000-memory.dmp

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memory/4084-140-0x0000000000400000-0x0000000000449000-memory.dmp

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memory/4084-141-0x0000000004A90000-0x0000000005034000-memory.dmp

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memory/4084-142-0x0000000005040000-0x00000000050DC000-memory.dmp

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memory/4084-143-0x0000000005970000-0x00000000059D6000-memory.dmp

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memory/4084-144-0x0000000005E30000-0x0000000005E80000-memory.dmp

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memory/4084-145-0x0000000005F90000-0x0000000006022000-memory.dmp

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memory/4084-146-0x0000000006160000-0x000000000616A000-memory.dmp

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