agenttesla | a2eaaaa66cd162d90cc6c68c0dcc379d89ba746ddbad8508c911c7a88ba86c9d

General

Target

Halkbank,pdf.exe
Size

999KB
MD5

61d198a66cfb49204b9b7ae0eb1ee918
SHA1

d4b93ad9205f9164ba5804691060006ac60d7c2c
SHA256

a2eaaaa66cd162d90cc6c68c0dcc379d89ba746ddbad8508c911c7a88ba86c9d
SHA512

7f2c8a2946220f0ae01a60e3f10872f770625aa7390066a1cd2d0ee577781ac571a4fec34087d3a290cc854e0eda9b06c5631549a088a6c0ba69169049549847
SSDEEP

24576:AksTPEx7E9CcefbXFklAo30MWr2zQ3yL+L74mBfNUstzo:AksrMQ9CccXFHNMO3

Score

10^/10

agenttesla collection keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.irw.com.br
Port:
587
Username:
[email protected]
Password:
Everest10@
Email To:
[email protected]

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
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-1-5-21-2971393436-602173351-1645505021-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank,pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank,pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank,pdf.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.

flow	ioc
44	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1696 set thread context of 4020	1696	Halkbank,pdf.exe	93

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4940	4020	WerFault.exe	93

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4020	Halkbank,pdf.exe
4020	Halkbank,pdf.exe
4020	Halkbank,pdf.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4020	Halkbank,pdf.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1696 wrote to memory of 4020	1696	Halkbank,pdf.exe	93
PID 1696 wrote to memory of 4020	1696	Halkbank,pdf.exe	93
PID 1696 wrote to memory of 4020	1696	Halkbank,pdf.exe	93
PID 1696 wrote to memory of 4020	1696	Halkbank,pdf.exe	93
PID 1696 wrote to memory of 4020	1696	Halkbank,pdf.exe	93
PID 1696 wrote to memory of 4020	1696	Halkbank,pdf.exe	93
PID 1696 wrote to memory of 4020	1696	Halkbank,pdf.exe	93
PID 1696 wrote to memory of 4020	1696	Halkbank,pdf.exe	93

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank,pdf.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Halkbank,pdf.exe

C:\Users\Admin\AppData\Local\Temp\Halkbank,pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Halkbank,pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1696
- C:\Users\Admin\AppData\Local\Temp\Halkbank,pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Halkbank,pdf.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:4020
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4020 -s 2004
    3⤵
    - Program crash
    PID:4940

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4020 -ip 4020
1⤵
PID:3248

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

3

T1081

Discovery

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Halkbank,pdf.exe.log

Filesize
1KB

MD5
8ec831f3e3a3f77e4a7b9cd32b48384c

SHA1
d83f09fd87c5bd86e045873c231c14836e76a05c

SHA256
7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

SHA512
26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

Download Submit
memory/1696-132-0x0000000000940000-0x0000000000A40000-memory.dmp

Filesize
1024KB

Download
memory/1696-133-0x0000000005A20000-0x0000000005FC4000-memory.dmp

Filesize
5.6MB

Download
memory/1696-134-0x00000000053B0000-0x0000000005442000-memory.dmp

Filesize
584KB

Download
memory/1696-135-0x0000000005470000-0x000000000547A000-memory.dmp

Filesize
40KB

Download
memory/1696-136-0x0000000008DE0000-0x0000000008E7C000-memory.dmp

Filesize
624KB

Download
memory/4020-138-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/4020-140-0x0000000006560000-0x00000000065C6000-memory.dmp

Filesize
408KB

Download
memory/4020-141-0x0000000007240000-0x0000000007290000-memory.dmp

Filesize
320KB

Download

Analysis

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