agenttesla | f539c8892d58f4fd0f4cf209ad0486f31ec5b51debd315ef8fb278f0d1b26637

General

Target

Shipping documents.exe
Size

1.4MB
MD5

0b67de290afdcb06218d5ab1a6c3c49b
SHA1

372ecac4cd7fe8de0f89aff4755683f8fed81a26
SHA256

669bfc59550b87a86c5e87d33da3e63be15f8712184a6aa176e0021b8c65df1e
SHA512

fc21a1dc1a1a29a5bdfc0d28f8d1a6be9204a26b7946b08d27e97b4e4c31c4be1caaa0bb9e2b199697ea0ec529ef7165c37ee7bb512c6accdae179f86fd66063
SSDEEP

24576:ktdCzxWfKe9UR1FCBmjwGJkAQy4X1N4QNbJP71SIzKgopvgeum5hD4nA:k2xWfKe9E1rEGZQTXXdP78d91Pumv4nA

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 1 IoCs

Processes:

Shipping documents.exe

pid process

516 Shipping documents.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.

Processes:

flow ioc

31 api.ipify.org
32 api.ipify.org
Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

Processes:

Shipping documents.exe

pid process

2876 Shipping documents.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

Shipping documents.exeShipping documents.exe

pid process

516 Shipping documents.exe
2876 Shipping documents.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

Shipping documents.exe

description pid process target process

PID 516 set thread context of 2876 516 Shipping documents.exe Shipping documents.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
516	Shipping documents.exe

flow	ioc
31	api.ipify.org
32	api.ipify.org

pid	process
2876	Shipping documents.exe

pid	process
516	Shipping documents.exe
2876	Shipping documents.exe

description	pid	process	target process
PID 516 set thread context of 2876	516	Shipping documents.exe	Shipping documents.exe

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

Processes:

Shipping documents.exeShipping documents.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Shipping documents.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Shipping documents.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs
Adversaries may check for Internet connectivity on compromised systems.
discovery

Internet Connection Discovery
T1016.001

Processes:

Shipping documents.exeShipping documents.exe

pid process

516 Shipping documents.exe
2876 Shipping documents.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

Shipping documents.exe

pid process

2876 Shipping documents.exe
2876 Shipping documents.exe
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

Shipping documents.exe

pid process

516 Shipping documents.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Shipping documents.exe

description pid process

Token: SeDebugPrivilege 2876 Shipping documents.exe

pid	process
516	Shipping documents.exe
2876	Shipping documents.exe

pid	process
2876	Shipping documents.exe
2876	Shipping documents.exe

pid	process
516	Shipping documents.exe

description	pid	process
Token: SeDebugPrivilege	2876	Shipping documents.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

Shipping documents.exe

description	pid	process	target process
PID 516 wrote to memory of 2876	516	Shipping documents.exe	Shipping documents.exe
PID 516 wrote to memory of 2876	516	Shipping documents.exe	Shipping documents.exe
PID 516 wrote to memory of 2876	516	Shipping documents.exe	Shipping documents.exe
PID 516 wrote to memory of 2876	516	Shipping documents.exe	Shipping documents.exe
PID 516 wrote to memory of 2876	516	Shipping documents.exe	Shipping documents.exe

C:\Users\Admin\AppData\Local\Temp\Shipping documents.exe
"C:\Users\Admin\AppData\Local\Temp\Shipping documents.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:516
- C:\Users\Admin\AppData\Local\Temp\Shipping documents.exe
  "C:\Users\Admin\AppData\Local\Temp\Shipping documents.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2876

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

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Data from Local System

4

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsuB74D.tmp\System.dll

Filesize
11KB

MD5
fc3772787eb239ef4d0399680dcc4343

SHA1
db2fa99ec967178cd8057a14a428a8439a961a73

SHA256
9b93c61c9d63ef8ec80892cc0e4a0877966dca9b0c3eb85555cebd2ddf4d6eed

SHA512
79e491ca4591a5da70116114b7fbb66ee15a0532386035e980c9dfe7afb59b1f9d9c758891e25bfb45c36b07afd3e171bac37a86c887387ef0e80b1eaf296c89

Download Submit
memory/516-24-0x0000000004A20000-0x0000000005BAE000-memory.dmp

Filesize
17.6MB

Download
memory/516-25-0x0000000077E41000-0x0000000077F61000-memory.dmp

Filesize
1.1MB

Download
memory/516-26-0x0000000010004000-0x0000000010005000-memory.dmp

Filesize
4KB

Download
memory/516-27-0x0000000004A20000-0x0000000005BAE000-memory.dmp

Filesize
17.6MB

Download
memory/2876-28-0x0000000001700000-0x000000000288E000-memory.dmp

Filesize
17.6MB

Download
memory/2876-29-0x0000000077EC8000-0x0000000077EC9000-memory.dmp

Filesize
4KB

Download
memory/2876-30-0x0000000077EE5000-0x0000000077EE6000-memory.dmp

Filesize
4KB

Download
memory/2876-31-0x00000000004A0000-0x00000000016F4000-memory.dmp

Filesize
18.3MB

Download
memory/2876-32-0x0000000077E41000-0x0000000077F61000-memory.dmp

Filesize
1.1MB

Download
memory/2876-33-0x00000000004A0000-0x00000000004E2000-memory.dmp

Filesize
264KB

Download
memory/2876-34-0x00000000351E0000-0x0000000035784000-memory.dmp

Filesize
5.6MB

Download
memory/2876-35-0x0000000032E10000-0x0000000032E76000-memory.dmp

Filesize
408KB

Download
memory/2876-36-0x0000000001700000-0x000000000288E000-memory.dmp

Filesize
17.6MB

Download
memory/2876-37-0x00000000360E0000-0x0000000036130000-memory.dmp

Filesize
320KB

Download
memory/2876-38-0x0000000036130000-0x00000000361C2000-memory.dmp

Filesize
584KB

Download
memory/2876-39-0x0000000036200000-0x000000003620A000-memory.dmp

Filesize
40KB

Download

Analysis

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