agenttesla | ba4f8ce88dec950f3869ae1bd1313c0af8fb90443645da1d5516acd44ccc7416

General

Target

253268344-050257-sanlccjavap0004-12608.exe
Size

1.1MB
MD5

58167ed9a471342e1ceebcf03068b792
SHA1

5009e33a1de629c36ca00c9a9be4cfb14d562382
SHA256

ba4f8ce88dec950f3869ae1bd1313c0af8fb90443645da1d5516acd44ccc7416
SHA512

ccbc121d4d93a02ca382ce1d98248dde51ba318a542a46fb9a5a2ec975617b7a0f27e917eac680efa8807a56a3ed6e3062801314e5d76af48e059e6c3d3b1211
SSDEEP

24576:3NOGCclxrngB5gkUSTlVb5PGkb8I884lGZV8D7iGK2bt4:dZxrngBZUSbbAkb8Im1DVXbu

Score

10^/10

agenttesla guloader discovery downloader keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot5147163644:AAEDa60jT_0f_OgilwiEp-CBiARVO2Rx3Mo/

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
4484	253268344-050257-sanlccjavap0004-12608.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
4084	253268344-050257-sanlccjavap0004-12608.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
4484	253268344-050257-sanlccjavap0004-12608.exe
4084	253268344-050257-sanlccjavap0004-12608.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	253268344-050257-sanlccjavap0004-12608.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	253268344-050257-sanlccjavap0004-12608.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4084	253268344-050257-sanlccjavap0004-12608.exe
4084	253268344-050257-sanlccjavap0004-12608.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4484	253268344-050257-sanlccjavap0004-12608.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4084	253268344-050257-sanlccjavap0004-12608.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4484 wrote to memory of 4084	4484	253268344-050257-sanlccjavap0004-12608.exe	90
PID 4484 wrote to memory of 4084	4484	253268344-050257-sanlccjavap0004-12608.exe	90
PID 4484 wrote to memory of 4084	4484	253268344-050257-sanlccjavap0004-12608.exe	90
PID 4484 wrote to memory of 4084	4484	253268344-050257-sanlccjavap0004-12608.exe	90

C:\Users\Admin\AppData\Local\Temp\253268344-050257-sanlccjavap0004-12608.exe
"C:\Users\Admin\AppData\Local\Temp\253268344-050257-sanlccjavap0004-12608.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4484
- C:\Users\Admin\AppData\Local\Temp\253268344-050257-sanlccjavap0004-12608.exe
  "C:\Users\Admin\AppData\Local\Temp\253268344-050257-sanlccjavap0004-12608.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4084

Network

MITRE ATT&CK Enterprise v16

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsl4A4A.tmp\System.dll

Filesize
11KB

MD5
a436db0c473a087eb61ff5c53c34ba27

SHA1
65ea67e424e75f5065132b539c8b2eda88aa0506

SHA256
75ed40311875312617d6711baed0be29fcaee71031ca27a8d308a72b15a51e49

SHA512
908f46a855480af6eacb2fb64de0e60b1e04bbb10b23992e2cf38a4cbebdcd7d3928c4c022d7ad9f7479265a8f426b93eef580afec95570e654c360d62f5e08d

Download Submit
memory/4084-28-0x0000000072ABE000-0x0000000072ABF000-memory.dmp

Filesize
4KB

Download
memory/4084-30-0x0000000038180000-0x0000000038724000-memory.dmp

Filesize
5.6MB

Download
memory/4084-39-0x0000000072AB0000-0x0000000073260000-memory.dmp

Filesize
7.7MB

Download
memory/4084-21-0x00000000016C0000-0x000000000560B000-memory.dmp

Filesize
63.3MB

Download
memory/4084-22-0x0000000077A08000-0x0000000077A09000-memory.dmp

Filesize
4KB

Download
memory/4084-24-0x0000000077A25000-0x0000000077A26000-memory.dmp

Filesize
4KB

Download
memory/4084-23-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/4084-25-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/4084-26-0x0000000077981000-0x0000000077AA1000-memory.dmp

Filesize
1.1MB

Download
memory/4084-38-0x0000000072ABE000-0x0000000072ABF000-memory.dmp

Filesize
4KB

Download
memory/4084-36-0x00000000393E0000-0x00000000393EA000-memory.dmp

Filesize
40KB

Download
memory/4084-27-0x00000000016C0000-0x000000000560B000-memory.dmp

Filesize
63.3MB

Download
memory/4084-29-0x0000000000460000-0x00000000004A0000-memory.dmp

Filesize
256KB

Download
memory/4084-31-0x0000000072AB0000-0x0000000073260000-memory.dmp

Filesize
7.7MB

Download
memory/4084-32-0x00000000380D0000-0x0000000038136000-memory.dmp

Filesize
408KB

Download
memory/4084-33-0x0000000038CF0000-0x0000000038D40000-memory.dmp

Filesize
320KB

Download
memory/4084-34-0x0000000038D40000-0x0000000038DDC000-memory.dmp

Filesize
624KB

Download
memory/4084-35-0x0000000039300000-0x0000000039392000-memory.dmp

Filesize
584KB

Download
memory/4484-20-0x0000000010004000-0x0000000010005000-memory.dmp

Filesize
4KB

Download
memory/4484-18-0x0000000077981000-0x0000000077AA1000-memory.dmp

Filesize
1.1MB

Download
memory/4484-19-0x0000000077981000-0x0000000077AA1000-memory.dmp

Filesize
1.1MB

Download

Analysis

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