agenttesla | 613113ce85195ad4ee1d48d212424be5719d697429f2cfe422752e056d2236c0

General

Target

18d5927d197f41af4d9b16621b0515a6.exe
Size

172KB
MD5

18d5927d197f41af4d9b16621b0515a6
SHA1

d2f4345de440d781b22f3ecf5b922783b4264bdd
SHA256

613113ce85195ad4ee1d48d212424be5719d697429f2cfe422752e056d2236c0
SHA512

60dde5e043e91469135829aa1590d7e505644fa22a675a205e5cc40e507b27b06e6fcfcc418b72fc8752a788ce51fd8ee3919fa4534ae94bf889db948b50e24b

Score

10^/10

agenttesla asyncrat default collection keylogger persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

agenttesla

C2

http://136.144.41.76/bray/inc/a4a9ffb236214a.php

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

127.0.0.1:1111

62.197.136.167:6606

62.197.136.167:7707

62.197.136.167:8808

62.197.136.167:1111

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
false
install_folder
%AppData%

aes.plain

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat
suricata: ET MALWARE AgentTesla Communicating with CnC Server
suricata: ET MALWARE AgentTesla Communicating with CnC Server
suricata
suricata: ET MALWARE Generic AsyncRAT Style SSL Cert
suricata: ET MALWARE Generic AsyncRAT Style SSL Cert
suricata
suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT Server)
suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT Server)
suricata

Async RAT payload 1 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/836-161-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat

Drops file in Drivers directory 1 IoCs

Processes:

InstallUtil.exe

description ioc process

File opened for modification C:\Windows\system32\drivers\etc\hosts InstallUtil.exe
Executes dropped EXE 1 IoCs

Processes:

Crstwuze5m.exe

pid process

4348 Crstwuze5m.exe

description	ioc	process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	InstallUtil.exe

pid	process
4348	Crstwuze5m.exe

Checks computer location settings 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

18d5927d197f41af4d9b16621b0515a6.exeCrstwuze5m.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	18d5927d197f41af4d9b16621b0515a6.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	Crstwuze5m.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

InstallUtil.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

18d5927d197f41af4d9b16621b0515a6.exeCrstwuze5m.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Aeigqqh = "\"C:\\Users\\Admin\\AppData\\Roaming\\Tupbtqbro\\Aeigqqh.exe\""	18d5927d197f41af4d9b16621b0515a6.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Aeigqqh = "\"C:\\Users\\Admin\\AppData\\Roaming\\Tupbtqbro\\Aeigqqh.exe\""	Crstwuze5m.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

18d5927d197f41af4d9b16621b0515a6.exeCrstwuze5m.exe

description	pid	process	target process
PID 2924 set thread context of 3532	2924	18d5927d197f41af4d9b16621b0515a6.exe	InstallUtil.exe
PID 4348 set thread context of 836	4348	Crstwuze5m.exe	InstallUtil.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 14 IoCs

Processes:

powershell.exepowershell.exepowershell.exe18d5927d197f41af4d9b16621b0515a6.exeInstallUtil.exepowershell.exeCrstwuze5m.exe

pid	process
4628	powershell.exe
4628	powershell.exe
3124	powershell.exe
3124	powershell.exe
1324	powershell.exe
2924	18d5927d197f41af4d9b16621b0515a6.exe
2924	18d5927d197f41af4d9b16621b0515a6.exe
1324	powershell.exe
3532	InstallUtil.exe
3532	InstallUtil.exe
2820	powershell.exe
2820	powershell.exe
4348	Crstwuze5m.exe
4348	Crstwuze5m.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

Processes:

powershell.exe18d5927d197f41af4d9b16621b0515a6.exepowershell.exepowershell.exeInstallUtil.exeCrstwuze5m.exepowershell.exeInstallUtil.exe

description	pid	process
Token: SeDebugPrivilege	4628	powershell.exe
Token: SeDebugPrivilege	2924	18d5927d197f41af4d9b16621b0515a6.exe
Token: SeDebugPrivilege	3124	powershell.exe
Token: SeDebugPrivilege	1324	powershell.exe
Token: SeDebugPrivilege	3532	InstallUtil.exe
Token: SeDebugPrivilege	4348	Crstwuze5m.exe
Token: SeDebugPrivilege	2820	powershell.exe
Token: SeDebugPrivilege	836	InstallUtil.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

InstallUtil.exe

pid process

3532 InstallUtil.exe

pid	process
3532	InstallUtil.exe

Suspicious use of WriteProcessMemory 31 IoCs

Processes:

18d5927d197f41af4d9b16621b0515a6.exeCrstwuze5m.exe

description	pid	process	target process
PID 2924 wrote to memory of 4628	2924	18d5927d197f41af4d9b16621b0515a6.exe	powershell.exe
PID 2924 wrote to memory of 4628	2924	18d5927d197f41af4d9b16621b0515a6.exe	powershell.exe
PID 2924 wrote to memory of 4628	2924	18d5927d197f41af4d9b16621b0515a6.exe	powershell.exe
PID 2924 wrote to memory of 3124	2924	18d5927d197f41af4d9b16621b0515a6.exe	powershell.exe
PID 2924 wrote to memory of 3124	2924	18d5927d197f41af4d9b16621b0515a6.exe	powershell.exe
PID 2924 wrote to memory of 3124	2924	18d5927d197f41af4d9b16621b0515a6.exe	powershell.exe
PID 2924 wrote to memory of 4348	2924	18d5927d197f41af4d9b16621b0515a6.exe	Crstwuze5m.exe
PID 2924 wrote to memory of 4348	2924	18d5927d197f41af4d9b16621b0515a6.exe	Crstwuze5m.exe
PID 2924 wrote to memory of 4348	2924	18d5927d197f41af4d9b16621b0515a6.exe	Crstwuze5m.exe
PID 4348 wrote to memory of 1324	4348	Crstwuze5m.exe	powershell.exe
PID 4348 wrote to memory of 1324	4348	Crstwuze5m.exe	powershell.exe
PID 4348 wrote to memory of 1324	4348	Crstwuze5m.exe	powershell.exe
PID 2924 wrote to memory of 3532	2924	18d5927d197f41af4d9b16621b0515a6.exe	InstallUtil.exe
PID 2924 wrote to memory of 3532	2924	18d5927d197f41af4d9b16621b0515a6.exe	InstallUtil.exe
PID 2924 wrote to memory of 3532	2924	18d5927d197f41af4d9b16621b0515a6.exe	InstallUtil.exe
PID 2924 wrote to memory of 3532	2924	18d5927d197f41af4d9b16621b0515a6.exe	InstallUtil.exe
PID 2924 wrote to memory of 3532	2924	18d5927d197f41af4d9b16621b0515a6.exe	InstallUtil.exe
PID 2924 wrote to memory of 3532	2924	18d5927d197f41af4d9b16621b0515a6.exe	InstallUtil.exe
PID 2924 wrote to memory of 3532	2924	18d5927d197f41af4d9b16621b0515a6.exe	InstallUtil.exe
PID 2924 wrote to memory of 3532	2924	18d5927d197f41af4d9b16621b0515a6.exe	InstallUtil.exe
PID 4348 wrote to memory of 2820	4348	Crstwuze5m.exe	powershell.exe
PID 4348 wrote to memory of 2820	4348	Crstwuze5m.exe	powershell.exe
PID 4348 wrote to memory of 2820	4348	Crstwuze5m.exe	powershell.exe
PID 4348 wrote to memory of 836	4348	Crstwuze5m.exe	InstallUtil.exe
PID 4348 wrote to memory of 836	4348	Crstwuze5m.exe	InstallUtil.exe
PID 4348 wrote to memory of 836	4348	Crstwuze5m.exe	InstallUtil.exe
PID 4348 wrote to memory of 836	4348	Crstwuze5m.exe	InstallUtil.exe
PID 4348 wrote to memory of 836	4348	Crstwuze5m.exe	InstallUtil.exe
PID 4348 wrote to memory of 836	4348	Crstwuze5m.exe	InstallUtil.exe
PID 4348 wrote to memory of 836	4348	Crstwuze5m.exe	InstallUtil.exe
PID 4348 wrote to memory of 836	4348	Crstwuze5m.exe	InstallUtil.exe

outlook_office_path 1 IoCs

Processes:

InstallUtil.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

outlook_win_path 1 IoCs

Processes:

InstallUtil.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\18d5927d197f41af4d9b16621b0515a6.exe
"C:\Users\Admin\AppData\Local\Temp\18d5927d197f41af4d9b16621b0515a6.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2924

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4628

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMQAxAA==
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3124

C:\Users\Admin\AppData\Local\Temp\Crstwuze5m.exe
"C:\Users\Admin\AppData\Local\Temp\Crstwuze5m.exe"
2⤵
- Executes dropped EXE
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4348

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1324

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMQAxAA==
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2820

C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
3⤵
- Suspicious use of AdjustPrivilegeToken
PID:836

C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
2⤵
- Drops file in Drivers directory
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
PID:3532

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
Filesize
1KB

MD5
4280e36a29fa31c01e4d8b2ba726a0d8

SHA1
c485c2c9ce0a99747b18d899b71dfa9a64dabe32

SHA256
e2486a1bdcba80dad6dd6210d7374bd70ae196a523c06ceda71370fd3ea78359

SHA512
494fe5f0ade03669e5830bed93c964d69b86629440148d7b0881cf53203fd89443ebff9b4d1ee9d96244f62af6edede622d9eacba37f80f389a0d522e4ad4ea4

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\ModuleAnalysisCache
Filesize
53KB

MD5
3337d66209faa998d52d781d0ff2d804

SHA1
6594b85a70f998f79f43cdf1ca56137997534156

SHA256
9b946b062865f68b9f0f43a011d33d7ea0926a3c8f78fb20d9cab6144314e1bd

SHA512
8bbd14bd73111f7b55712f5d1e1b727e41db8e6e0c1243ee6809ff32b509e52dec7af34c064151fb5beccd59dda434a3f83abe987c561a25abfbb4cbcf9c7f1f

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
16KB

MD5
4a76ff2cb0221e6f386934409b4081f9

SHA1
641753885fe1f46c609a3291fce3ff3979d83469

SHA256
6a7b53fe72bc2081c0bf0633c241097256871865dd7ea0b0d10e842ea575fb9c

SHA512
6caef5a5aac18b6a7e8c020e2692c968eaf433000b0153941a26f2223b842b8305ab1d5fc233435aef47e79cdb237fd3584e3bd3bb1f5bd66c8286f91ba8e79b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Crstwuze5m.exe
Filesize
172KB

MD5
982f97ccf89f9d50dbc5d152c7139a50

SHA1
0ba6c448dd8566a1196e642ef1d834d55bf6e3e6

SHA256
f41360c7779e6656ec89fdfa40ae58b619d80dd27286802a9e902ab9dde19152

SHA512
c51127261b13e135e183c779c2bc10b5f43a2e27ccfd902829abc215beddd2070cf3739ac810201ae4eaf98dc9afab9b5e6923e97b1ca7bd0c7e661706c08fd1

Download Submit
C:\Users\Admin\AppData\Local\Temp\Crstwuze5m.exe
Filesize
172KB

MD5
982f97ccf89f9d50dbc5d152c7139a50

SHA1
0ba6c448dd8566a1196e642ef1d834d55bf6e3e6

SHA256
f41360c7779e6656ec89fdfa40ae58b619d80dd27286802a9e902ab9dde19152

SHA512
c51127261b13e135e183c779c2bc10b5f43a2e27ccfd902829abc215beddd2070cf3739ac810201ae4eaf98dc9afab9b5e6923e97b1ca7bd0c7e661706c08fd1

Download Submit
C:\Users\Admin\AppData\Roaming\Tupbtqbro\Aeigqqh.exe
Filesize
172KB

MD5
982f97ccf89f9d50dbc5d152c7139a50

SHA1
0ba6c448dd8566a1196e642ef1d834d55bf6e3e6

SHA256
f41360c7779e6656ec89fdfa40ae58b619d80dd27286802a9e902ab9dde19152

SHA512
c51127261b13e135e183c779c2bc10b5f43a2e27ccfd902829abc215beddd2070cf3739ac810201ae4eaf98dc9afab9b5e6923e97b1ca7bd0c7e661706c08fd1

Download Submit
memory/836-161-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/836-160-0x0000000000000000-mapping.dmp

Download
memory/1324-150-0x0000000000000000-mapping.dmp

Download
memory/2820-157-0x0000000000000000-mapping.dmp

Download
memory/2924-133-0x0000000004AB0000-0x0000000004ABA000-memory.dmp

Filesize
40KB

Download
memory/2924-130-0x00000000000F0000-0x0000000000120000-memory.dmp

Filesize
192KB

Download
memory/2924-132-0x0000000004B10000-0x0000000004BA2000-memory.dmp

Filesize
584KB

Download
memory/2924-131-0x00000000050C0000-0x0000000005664000-memory.dmp

Filesize
5.6MB

Download
memory/3124-145-0x0000000000000000-mapping.dmp

Download
memory/3532-156-0x0000000006880000-0x00000000068D0000-memory.dmp

Filesize
320KB

Download
memory/3532-154-0x00000000055C0000-0x000000000565C000-memory.dmp

Filesize
624KB

Download
memory/3532-153-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/3532-152-0x0000000000000000-mapping.dmp

Download
memory/4348-146-0x0000000000000000-mapping.dmp

Download
memory/4348-149-0x0000000000E10000-0x0000000000E40000-memory.dmp

Filesize
192KB

Download
memory/4628-144-0x0000000007CE0000-0x0000000007CFA000-memory.dmp

Filesize
104KB

Download
memory/4628-143-0x0000000008340000-0x00000000089BA000-memory.dmp

Filesize
6.5MB

Download
memory/4628-142-0x0000000007C40000-0x0000000007CB6000-memory.dmp

Filesize
472KB

Download
memory/4628-141-0x0000000006ED0000-0x0000000006F14000-memory.dmp

Filesize
272KB

Download
memory/4628-140-0x00000000068C0000-0x00000000068DE000-memory.dmp

Filesize
120KB

Download
memory/4628-139-0x0000000006310000-0x0000000006376000-memory.dmp

Filesize
408KB

Download
memory/4628-138-0x0000000005A60000-0x0000000005AC6000-memory.dmp

Filesize
408KB

Download
memory/4628-137-0x0000000005880000-0x00000000058A2000-memory.dmp

Filesize
136KB

Download
memory/4628-136-0x0000000005CE0000-0x0000000006308000-memory.dmp

Filesize
6.2MB

Download
memory/4628-135-0x0000000002FF0000-0x0000000003026000-memory.dmp

Filesize
216KB

Download
memory/4628-134-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads