agenttesla | f9f83c3846cb77a82a67e231f5d770d805f486cf602798b3d4d4444255bb87ef

General

Target

PURCHASE ORDER.exe
Size

271KB
MD5

664fc03c56695b1fe1cfa34159cc36dd
SHA1

f9dd1ebc4f3d60c7c7400c8d1b67164a0e3f98a2
SHA256

156c6d57b228e6b5a8920f268f26b70b5fb6ec53b255f102f2dc9f7fa21c9097
SHA512

b52a6332e7abf43747ea2aa64173efeecbf7bcae3935e56563d949c12bef50f2b7d75a30a8147bdcaa676e945ccb31e04dc89fe1c736d92a77588540834709f9
SSDEEP

6144:vYa6coraik7e/kTz9pRPAwpm4Fb3P7c9Vb0mH3a64x:vYa63JsTvRPAwpm4V3DSVA8aR

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Signatures

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

Loads dropped DLL 1 IoCs

pid	Process
3100	PURCHASE ORDER.exe

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
T1081
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
T1081
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
T1081

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2177513644-1903222820-241662473-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PURCHASE ORDER.exe
Key opened	\REGISTRY\USER\S-1-5-21-2177513644-1903222820-241662473-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PURCHASE ORDER.exe
Key opened	\REGISTRY\USER\S-1-5-21-2177513644-1903222820-241662473-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PURCHASE ORDER.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2177513644-1903222820-241662473-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Ycdwx = "C:\\Users\\Admin\\AppData\\Roaming\\Ycdwx\\Ycdwx.exe"	PURCHASE ORDER.exe

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
11	api.ipify.org
12	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3100 set thread context of 4696	3100	PURCHASE ORDER.exe	85

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4696	PURCHASE ORDER.exe
4696	PURCHASE ORDER.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3100	PURCHASE ORDER.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4696	PURCHASE ORDER.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3100 wrote to memory of 4696	3100	PURCHASE ORDER.exe	85
PID 3100 wrote to memory of 4696	3100	PURCHASE ORDER.exe	85
PID 3100 wrote to memory of 4696	3100	PURCHASE ORDER.exe	85
PID 3100 wrote to memory of 4696	3100	PURCHASE ORDER.exe	85

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2177513644-1903222820-241662473-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PURCHASE ORDER.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2177513644-1903222820-241662473-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PURCHASE ORDER.exe

C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER.exe
"C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3100
- C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER.exe
  "C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:4696

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsn418F.tmp\udflbqvv.dll

Filesize
22KB

MD5
435d3422a664d8aa605c24f1bf6bb51b

SHA1
640ff0c721dadb2b3be1f5e99628c23545f171a9

SHA256
b245f1d5ae9a1c264d54c148b8c566d710bd2a990ea53df5489c8a3d83ffe091

SHA512
ff3d1f8510683b5191bb539cbf530d849545c349f3ea697494a7f34d7a20fc8f15178fa789e27dc3a337b32aac777024869215c952833efd477ad9f15002cbf8

Download Submit
memory/3100-139-0x00000000022F0000-0x00000000022F2000-memory.dmp

Filesize
8KB

Download
memory/4696-140-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/4696-141-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/4696-142-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/4696-143-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/4696-144-0x0000000004A90000-0x0000000004AA0000-memory.dmp

Filesize
64KB

Download
memory/4696-145-0x0000000004AA0000-0x0000000005044000-memory.dmp

Filesize
5.6MB

Download
memory/4696-146-0x00000000049F0000-0x0000000004A56000-memory.dmp

Filesize
408KB

Download
memory/4696-148-0x0000000004A90000-0x0000000004AA0000-memory.dmp

Filesize
64KB

Download
memory/4696-149-0x0000000004A90000-0x0000000004AA0000-memory.dmp

Filesize
64KB

Download
memory/4696-150-0x0000000004A90000-0x0000000004AA0000-memory.dmp

Filesize
64KB

Download
memory/4696-151-0x0000000005B90000-0x0000000005BE0000-memory.dmp

Filesize
320KB

Download
memory/4696-152-0x0000000005BE0000-0x0000000005DA2000-memory.dmp

Filesize
1.8MB

Download
memory/4696-153-0x0000000005DC0000-0x0000000005E52000-memory.dmp

Filesize
584KB

Download
memory/4696-154-0x0000000005FC0000-0x0000000005FCA000-memory.dmp

Filesize
40KB

Download

Analysis

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