agenttesla | 48410e44ca5545cd271a2013db55812bd5b5b447ffa66f5edc1ecf403d06c191

Analysis

max time kernel
4294180s
max time network
122s
platform
windows7_x64
resource
win7-20220311-en
submitted
21/03/2022, 12:12

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General

Target
MOD41SA10PSQ4W1.exe
Size 70KB
Sample220321-pc6tlacae5
SHA256 c6045ce3162c17ebce174609ecbca8e5024a69edcc37c89bc60ff2e07cb52475
MD5 24b28c056d5792d8058cdd28703cb97b
SHA1 16d35977d42ea40a747d33bef9ca936ecf01a8cb
SHA512 4ca87baec767123a597b632a53e0f1e9e28dcba2b94d79ce33f8b5f68ed684e698da41c814fddbd20ddb958980eb8044d75d88cae9afab4dc53d5d451adc6c02
MD5 SHA1 SHA512

Score

10^/10

agenttesla collection keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
mail.ecotanksystems.in
Port
587
Username
[email protected]
Password
krishna@0612
Email to
[email protected]

Signatures

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

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	MOD41SA10PSQ4W1.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-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MOD41SA10PSQ4W1.exe
Key opened	\REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MOD41SA10PSQ4W1.exe
Key opened	\REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MOD41SA10PSQ4W1.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1764 set thread context of 1528	1764	MOD41SA10PSQ4W1.exe	33

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1144	timeout.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1764	MOD41SA10PSQ4W1.exe
1764	MOD41SA10PSQ4W1.exe
1528	MOD41SA10PSQ4W1.exe
1528	MOD41SA10PSQ4W1.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1764	MOD41SA10PSQ4W1.exe
Token: SeDebugPrivilege	1528	MOD41SA10PSQ4W1.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1764 wrote to memory of 740	1764	MOD41SA10PSQ4W1.exe	28
PID 1764 wrote to memory of 740	1764	MOD41SA10PSQ4W1.exe	28
PID 1764 wrote to memory of 740	1764	MOD41SA10PSQ4W1.exe	28
PID 1764 wrote to memory of 740	1764	MOD41SA10PSQ4W1.exe	28
PID 740 wrote to memory of 1144	740	cmd.exe	30
PID 740 wrote to memory of 1144	740	cmd.exe	30
PID 740 wrote to memory of 1144	740	cmd.exe	30
PID 740 wrote to memory of 1144	740	cmd.exe	30
PID 1764 wrote to memory of 1528	1764	MOD41SA10PSQ4W1.exe	33
PID 1764 wrote to memory of 1528	1764	MOD41SA10PSQ4W1.exe	33
PID 1764 wrote to memory of 1528	1764	MOD41SA10PSQ4W1.exe	33
PID 1764 wrote to memory of 1528	1764	MOD41SA10PSQ4W1.exe	33
PID 1764 wrote to memory of 1528	1764	MOD41SA10PSQ4W1.exe	33
PID 1764 wrote to memory of 1528	1764	MOD41SA10PSQ4W1.exe	33
PID 1764 wrote to memory of 1528	1764	MOD41SA10PSQ4W1.exe	33
PID 1764 wrote to memory of 1528	1764	MOD41SA10PSQ4W1.exe	33
PID 1764 wrote to memory of 1528	1764	MOD41SA10PSQ4W1.exe	33
PID 1764 wrote to memory of 1528	1764	MOD41SA10PSQ4W1.exe	33
PID 1764 wrote to memory of 1528	1764	MOD41SA10PSQ4W1.exe	33
PID 1764 wrote to memory of 1528	1764	MOD41SA10PSQ4W1.exe	33

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MOD41SA10PSQ4W1.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MOD41SA10PSQ4W1.exe

C:\Users\Admin\AppData\Local\Temp\MOD41SA10PSQ4W1.exe
"C:\Users\Admin\AppData\Local\Temp\MOD41SA10PSQ4W1.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1764
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout 20
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:740
- - C:\Windows\SysWOW64\timeout.exe
    timeout 20
    3⤵
    - Delays execution with timeout.exe
    PID:1144
- C:\Users\Admin\AppData\Local\Temp\MOD41SA10PSQ4W1.exe
  C:\Users\Admin\AppData\Local\Temp\MOD41SA10PSQ4W1.exe
  2⤵
  - Drops file in Drivers directory
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:1528

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

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Downloads

memory/1528-65-0x0000000000400000-0x000000000043A000-memory.dmp

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memory/1528-78-0x0000000004E31000-0x0000000004E32000-memory.dmp

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memory/1528-77-0x0000000004E30000-0x0000000004E31000-memory.dmp

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memory/1528-76-0x0000000074210000-0x00000000748FE000-memory.dmp

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memory/1528-75-0x0000000000400000-0x000000000043A000-memory.dmp

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memory/1528-73-0x0000000000400000-0x000000000043A000-memory.dmp

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memory/1528-71-0x0000000000400000-0x000000000043A000-memory.dmp

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memory/1528-69-0x0000000000400000-0x000000000043A000-memory.dmp

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memory/1528-67-0x0000000000400000-0x000000000043A000-memory.dmp

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memory/1528-63-0x0000000000400000-0x000000000043A000-memory.dmp

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memory/1764-58-0x0000000005410000-0x000000000549A000-memory.dmp

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memory/1764-62-0x0000000005620000-0x000000000566C000-memory.dmp

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memory/1764-61-0x0000000004F50000-0x0000000004F92000-memory.dmp

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memory/1764-60-0x0000000004D50000-0x0000000004D92000-memory.dmp

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memory/1764-59-0x00000000045E0000-0x0000000004626000-memory.dmp

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memory/1764-54-0x0000000001150000-0x0000000001168000-memory.dmp

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memory/1764-57-0x00000000045A0000-0x00000000045A1000-memory.dmp

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memory/1764-56-0x0000000074C91000-0x0000000074C93000-memory.dmp

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memory/1764-55-0x0000000074210000-0x00000000748FE000-memory.dmp

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