agenttesla | 4a604a1400c389ddbd23c6f316bcd77ea820f3a00eab459678a39847ebbc82a6

General

Target

Scanned copy invoice.exe
Size

429KB
MD5

2bffa0ee481c114fbae3dd11de379253
SHA1

32192f93fa6650bfc4eb01c0a2731c6fcc3050c3
SHA256

5e8cf7376d24c9637309a847c15ca2fc080d016d91b656dd8adc61f3d7d71abc
SHA512

1d1d74155b7ce5efab02e5fbc6f913daac6afe2645880feb70a65d0dfa47508e514f6ba52d059911f4a330bf99f30e6f1a1f7844f53a1b2468568f8c05817a7b
SSDEEP

6144:DZm49UNNMYc+5TdyfZjx1WWiOXbSHtBt3pt7MTa:19VA5TuZjx1WeGBt3/

Score

10^/10

agenttesla agilenet credential_access defense_evasion discovery keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.ereglitso.org.tr
Port:
587
Username:
[email protected]
Password:
=itbvqD+KGPp

Signatures

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

AgentTesla payload 1 IoCs

resource	yara_rule
behavioral2/memory/3472-16-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla

Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

System Binary Proxy Execution: InstallUtil 1 TTPs 2 IoCs

Abuse InstallUtil to proxy execution of malicious code.

defense_evasion

InstallUtil

T1218.004

description	ioc	Process
Key opened	\Registry\Machine\Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Custom\InstallUtil.exe	Scanned copy invoice.exe
File created	C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe	Scanned copy invoice.exe

Executes dropped EXE 1 IoCs

pid	Process
3472	InstallUtil.exe

Obfuscated with Agile.Net obfuscator 1 IoCs

Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

agilenet

resource	yara_rule
behavioral2/memory/4360-2-0x0000000003320000-0x0000000003334000-memory.dmp	agile_net

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
T1552.001
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
T1552.001
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
T1552.001
Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

Credentials In Files
T1552.001

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4360 set thread context of 3472	4360	Scanned copy invoice.exe	89

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4016	3472	WerFault.exe	89

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Scanned copy invoice.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
4360	Scanned copy invoice.exe
4360	Scanned copy invoice.exe
4360	Scanned copy invoice.exe
3472	InstallUtil.exe
3472	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4360	Scanned copy invoice.exe
Token: SeDebugPrivilege	3472	InstallUtil.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4360 wrote to memory of 3472	4360	Scanned copy invoice.exe	89
PID 4360 wrote to memory of 3472	4360	Scanned copy invoice.exe	89
PID 4360 wrote to memory of 3472	4360	Scanned copy invoice.exe	89
PID 4360 wrote to memory of 3472	4360	Scanned copy invoice.exe	89
PID 4360 wrote to memory of 3472	4360	Scanned copy invoice.exe	89
PID 4360 wrote to memory of 3472	4360	Scanned copy invoice.exe	89
PID 4360 wrote to memory of 3472	4360	Scanned copy invoice.exe	89
PID 4360 wrote to memory of 3472	4360	Scanned copy invoice.exe	89

C:\Users\Admin\AppData\Local\Temp\Scanned copy invoice.exe
"C:\Users\Admin\AppData\Local\Temp\Scanned copy invoice.exe"
1⤵
- System Binary Proxy Execution: InstallUtil
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4360
- C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
  "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3472
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3472 -s 1356
    3⤵
    - Program crash
    PID:4016

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 3472 -ip 3472
1⤵
PID:2280

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

System Binary Proxy Execution

1

T1218

InstallUtil

1

T1218.004

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

4

T1552

Credentials In Files

4

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
41KB

MD5
5d4073b2eb6d217c19f2b22f21bf8d57

SHA1
f0209900fbf08d004b886a0b3ba33ea2b0bf9da8

SHA256
ac1a3f21fcc88f9cee7bf51581eafba24cc76c924f0821deb2afdf1080ddf3d3

SHA512
9ac94880684933ba3407cdc135abc3047543436567af14cd9269c4adc5a6535db7b867d6de0d6238a21b94e69f9890dbb5739155871a624520623a7e56872159

Download Submit
memory/3472-16-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3472-28-0x00000000753A0000-0x0000000075B50000-memory.dmp

Filesize
7.7MB

Download
memory/3472-27-0x0000000006CA0000-0x0000000006CF0000-memory.dmp

Filesize
320KB

Download
memory/3472-26-0x0000000006660000-0x00000000066C6000-memory.dmp

Filesize
408KB

Download
memory/3472-25-0x00000000057A0000-0x00000000057B8000-memory.dmp

Filesize
96KB

Download
memory/3472-24-0x00000000753A0000-0x0000000075B50000-memory.dmp

Filesize
7.7MB

Download
memory/3472-23-0x00000000059F0000-0x0000000005A8C000-memory.dmp

Filesize
624KB

Download
memory/3472-22-0x00000000753A0000-0x0000000075B50000-memory.dmp

Filesize
7.7MB

Download
memory/3472-21-0x00000000753A0000-0x0000000075B50000-memory.dmp

Filesize
7.7MB

Download
memory/4360-6-0x0000000005AB0000-0x0000000005B42000-memory.dmp

Filesize
584KB

Download
memory/4360-8-0x0000000005C60000-0x0000000005CA4000-memory.dmp

Filesize
272KB

Download
memory/4360-13-0x00000000753A0000-0x0000000075B50000-memory.dmp

Filesize
7.7MB

Download
memory/4360-15-0x0000000006BF0000-0x0000000006C12000-memory.dmp

Filesize
136KB

Download
memory/4360-11-0x00000000753A0000-0x0000000075B50000-memory.dmp

Filesize
7.7MB

Download
memory/4360-9-0x0000000005C00000-0x0000000005C08000-memory.dmp

Filesize
32KB

Download
memory/4360-20-0x00000000753A0000-0x0000000075B50000-memory.dmp

Filesize
7.7MB

Download
memory/4360-12-0x00000000753AE000-0x00000000753AF000-memory.dmp

Filesize
4KB

Download
memory/4360-7-0x00000000753A0000-0x0000000075B50000-memory.dmp

Filesize
7.7MB

Download
memory/4360-0-0x00000000753AE000-0x00000000753AF000-memory.dmp

Filesize
4KB

Download
memory/4360-4-0x0000000003390000-0x0000000003398000-memory.dmp

Filesize
32KB

Download
memory/4360-5-0x00000000058B0000-0x00000000058B8000-memory.dmp

Filesize
32KB

Download
memory/4360-3-0x0000000005F80000-0x0000000006524000-memory.dmp

Filesize
5.6MB

Download
memory/4360-2-0x0000000003320000-0x0000000003334000-memory.dmp

Filesize
80KB

Download
memory/4360-1-0x0000000000F50000-0x0000000000FC2000-memory.dmp

Filesize
456KB

Download

Analysis

Sharing