agenttesla | 186a1d9c4703d9498b26d88451e31018ff66b7f9f135e0ed93f9ac10aa485753

General

Target

rendels_1023200000000000305.exe
Size

979KB
MD5

ff83f495808f8837a41405726ce9d7b9
SHA1

186bb042c4a61b7905ed62bde58f062725897192
SHA256

186a1d9c4703d9498b26d88451e31018ff66b7f9f135e0ed93f9ac10aa485753
SHA512

89112cc0a4b7349bbb9b9c2b2e466f895375ee099a27b6a497be3860414f9ad9d8ec87b0dd521e029fc4827ee1e1560b76e319e5b4ea12ac1b76986626f2ddca
SSDEEP

24576:+YB//x9sjWsxFLFS8Tppg8bY6yEV+ztrHvm:j9//CWWTppm65wc

Score

10^/10

agenttesla guloader discovery downloader keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: ftp
Host:
ftp://ftp.carbognin.it
Port:
21
Username:
[email protected]
Password:
59Cif8wZUH#X

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
Agenttesla family
agenttesla
Guloader family
guloader
Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader

Loads dropped DLL 1 IoCs

pid	Process
4856	rendels_1023200000000000305.exe

Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
spyware stealer

Data from Local System
T1005

Credentials in Registry
T1552.002
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 3 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

Credentials from Web Browsers
T1555.003

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
1940	rendels_1023200000000000305.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
4856	rendels_1023200000000000305.exe
1940	rendels_1023200000000000305.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4856 set thread context of 1940	4856	rendels_1023200000000000305.exe	82

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Common Files\duefalke\soutenrer.ini	rendels_1023200000000000305.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\resources\0409\iterators\likewise.Vid124	rendels_1023200000000000305.exe

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

System Information Discovery
T1082

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	rendels_1023200000000000305.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rendels_1023200000000000305.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1940	rendels_1023200000000000305.exe
1940	rendels_1023200000000000305.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4856	rendels_1023200000000000305.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1940	rendels_1023200000000000305.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4856 wrote to memory of 1940	4856	rendels_1023200000000000305.exe	82
PID 4856 wrote to memory of 1940	4856	rendels_1023200000000000305.exe	82
PID 4856 wrote to memory of 1940	4856	rendels_1023200000000000305.exe	82
PID 4856 wrote to memory of 1940	4856	rendels_1023200000000000305.exe	82
PID 4856 wrote to memory of 1940	4856	rendels_1023200000000000305.exe	82

C:\Users\Admin\AppData\Local\Temp\rendels_1023200000000000305.exe
"C:\Users\Admin\AppData\Local\Temp\rendels_1023200000000000305.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4856
- C:\Users\Admin\AppData\Local\Temp\rendels_1023200000000000305.exe
  "C:\Users\Admin\AppData\Local\Temp\rendels_1023200000000000305.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1940

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

4

T1552

Credentials In Files

3

T1552.001

Credentials in Registry

1

T1552.002

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

4

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsu786E.tmp\System.dll

Filesize
12KB

MD5
cff85c549d536f651d4fb8387f1976f2

SHA1
d41ce3a5ff609df9cf5c7e207d3b59bf8a48530e

SHA256
8dc562cda7217a3a52db898243de3e2ed68b80e62ddcb8619545ed0b4e7f65a8

SHA512
531d6328daf3b86d85556016d299798fa06fefc81604185108a342d000e203094c8c12226a12bd6e1f89b0db501fb66f827b610d460b933bd4ab936ac2fd8a88

Download Submit
memory/1940-22-0x0000000034CA0000-0x0000000035244000-memory.dmp

Filesize
5.6MB

Download
memory/1940-24-0x00000000016F0000-0x00000000023EA000-memory.dmp

Filesize
13.0MB

Download
memory/1940-20-0x0000000072D5E000-0x0000000072D5F000-memory.dmp

Filesize
4KB

Download
memory/1940-21-0x0000000000490000-0x00000000004D2000-memory.dmp

Filesize
264KB

Download
memory/1940-15-0x00000000016F0000-0x00000000023EA000-memory.dmp

Filesize
13.0MB

Download
memory/1940-16-0x0000000077C68000-0x0000000077C69000-memory.dmp

Filesize
4KB

Download
memory/1940-17-0x0000000077C85000-0x0000000077C86000-memory.dmp

Filesize
4KB

Download
memory/1940-19-0x0000000077BE1000-0x0000000077D01000-memory.dmp

Filesize
1.1MB

Download
memory/1940-29-0x0000000072D5E000-0x0000000072D5F000-memory.dmp

Filesize
4KB

Download
memory/1940-18-0x0000000000490000-0x00000000016E4000-memory.dmp

Filesize
18.3MB

Download
memory/1940-27-0x0000000035980000-0x000000003598A000-memory.dmp

Filesize
40KB

Download
memory/1940-26-0x00000000358B0000-0x0000000035942000-memory.dmp

Filesize
584KB

Download
memory/1940-23-0x0000000035350000-0x00000000353B6000-memory.dmp

Filesize
408KB

Download
memory/1940-25-0x0000000035850000-0x00000000358A0000-memory.dmp

Filesize
320KB

Download
memory/4856-12-0x0000000077BE1000-0x0000000077D01000-memory.dmp

Filesize
1.1MB

Download
memory/4856-11-0x00000000032E0000-0x0000000003FDA000-memory.dmp

Filesize
13.0MB

Download
memory/4856-14-0x00000000032E0000-0x0000000003FDA000-memory.dmp

Filesize
13.0MB

Download
memory/4856-13-0x00000000748D5000-0x00000000748D6000-memory.dmp

Filesize
4KB

Download

Analysis

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