agenttesla | 447a4c0228f0f8c81f9159366e8cdda2af4a5603249f8bf6ceb6fe0d40f32b9a

Analysis

max time kernel
150s
max time network
129s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
18-12-2024 10:09

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General

Target

PO0309494059506060609696007.exe
Size

791KB
MD5

0be2d87edbe429042bf5eb8791a40bfd
SHA1

56d20ae6ba8bcbf137164efe5ebb846b5dabfb3e
SHA256

447a4c0228f0f8c81f9159366e8cdda2af4a5603249f8bf6ceb6fe0d40f32b9a
SHA512

1ec02570405763f1369131cb9405f90cc8ce27f771917462c6331e584e35ba93f2c9bbf0eeeddee5f679bd978525a0dda9d9fa5ecb4ca71f1ac2dc1d43d6c005
SSDEEP

24576:Gvdzpz6Jwl+mHDoR94vmsgnqVNO7qg+E5cnF:kMwQmoRkYn6NAqDE5cnF

Score

10^/10

agenttesla guloader discovery downloader keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: ftp
Host:
ftp://ftp.concaribe.com
Port:
21
Username:
[email protected]
Password:
ro}UWgz#!38E

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 6 IoCs

pid	Process
5056	PO0309494059506060609696007.exe
5056	PO0309494059506060609696007.exe
5056	PO0309494059506060609696007.exe
5056	PO0309494059506060609696007.exe
5056	PO0309494059506060609696007.exe
5056	PO0309494059506060609696007.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

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
16	api.ipify.org
17	api.ipify.org

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
3276	PO0309494059506060609696007.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
5056	PO0309494059506060609696007.exe
3276	PO0309494059506060609696007.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5056 set thread context of 3276	5056	PO0309494059506060609696007.exe	82

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\locale\Indviklingerne.ini	PO0309494059506060609696007.exe
File opened for modification	C:\Windows\resources\havarierne\firmamrke.kna	PO0309494059506060609696007.exe
File opened for modification	C:\Windows\resources\0409\tripennate\Funktionrgruppes19.has	PO0309494059506060609696007.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	PO0309494059506060609696007.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PO0309494059506060609696007.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3276	PO0309494059506060609696007.exe
3276	PO0309494059506060609696007.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
5056	PO0309494059506060609696007.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3276	PO0309494059506060609696007.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 5056 wrote to memory of 3276	5056	PO0309494059506060609696007.exe	82
PID 5056 wrote to memory of 3276	5056	PO0309494059506060609696007.exe	82
PID 5056 wrote to memory of 3276	5056	PO0309494059506060609696007.exe	82
PID 5056 wrote to memory of 3276	5056	PO0309494059506060609696007.exe	82
PID 5056 wrote to memory of 3276	5056	PO0309494059506060609696007.exe	82

C:\Users\Admin\AppData\Local\Temp\PO0309494059506060609696007.exe
"C:\Users\Admin\AppData\Local\Temp\PO0309494059506060609696007.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:5056
- C:\Users\Admin\AppData\Local\Temp\PO0309494059506060609696007.exe
  "C:\Users\Admin\AppData\Local\Temp\PO0309494059506060609696007.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3276

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Credentials in Registry

T1552.002

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsz91A2.tmp\LangDLL.dll

Filesize
5KB

MD5
ab1db56369412fe8476fefffd11e4cc0

SHA1
daad036a83b2ee2fa86d840a34a341100552e723

SHA256
6f14c8f01f50a30743dac68c5ac813451463dfb427eb4e35fcdfe2410e1a913b

SHA512
8d886643b4fc24adf78f76b663227d6e61863f89e0cbd49548f40dd040666ca94ea46bec9e336850e4f300995d56e6dc85b689c8e09ff46758822d280f06b03d

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsz91A2.tmp\System.dll

Filesize
12KB

MD5
0d7ad4f45dc6f5aa87f606d0331c6901

SHA1
48df0911f0484cbe2a8cdd5362140b63c41ee457

SHA256
3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca

SHA512
c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9

Download Submit
memory/3276-38-0x0000000035A70000-0x0000000035AD6000-memory.dmp

Filesize
408KB

Download
memory/3276-35-0x0000000000480000-0x00000000004C2000-memory.dmp

Filesize
264KB

Download
memory/3276-43-0x0000000077991000-0x0000000077AB1000-memory.dmp

Filesize
1.1MB

Download
memory/3276-31-0x00000000016E0000-0x0000000002A5F000-memory.dmp

Filesize
19.5MB

Download
memory/3276-32-0x0000000077A18000-0x0000000077A19000-memory.dmp

Filesize
4KB

Download
memory/3276-33-0x0000000077A35000-0x0000000077A36000-memory.dmp

Filesize
4KB

Download
memory/3276-34-0x0000000000480000-0x00000000016D4000-memory.dmp

Filesize
18.3MB

Download
memory/3276-41-0x0000000036500000-0x000000003650A000-memory.dmp

Filesize
40KB

Download
memory/3276-36-0x00000000353C0000-0x0000000035964000-memory.dmp

Filesize
5.6MB

Download
memory/3276-37-0x00000000016E0000-0x0000000002A5F000-memory.dmp

Filesize
19.5MB

Download
memory/3276-40-0x0000000036430000-0x00000000364C2000-memory.dmp

Filesize
584KB

Download
memory/3276-39-0x00000000363E0000-0x0000000036430000-memory.dmp

Filesize
320KB

Download
memory/5056-28-0x0000000004400000-0x000000000577F000-memory.dmp

Filesize
19.5MB

Download
memory/5056-29-0x0000000077991000-0x0000000077AB1000-memory.dmp

Filesize
1.1MB

Download
memory/5056-30-0x0000000004400000-0x000000000577F000-memory.dmp

Filesize
19.5MB

Download