33c5653158fbb1828f7cf9d7c414cc5895883b4b89533869277c6959983848da

Analysis

max time kernel
241s
max time network
247s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
06/07/2024, 22:36

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General

Target

straya_1.9.bat
Size

155KB
MD5

1716f6e36b264ea30d1d8cff9110f139
SHA1

759a3e09756685ca3c4fd274ca210fa19760dcf0
SHA256

33c5653158fbb1828f7cf9d7c414cc5895883b4b89533869277c6959983848da
SHA512

791318cdd740607a61d5da19348bb0ae5bc9afa2fc29139bb8f6160be8c15cd9934fa961fe599ccc52e7dd9cf9f8f5ca140ab25c1819783b3620ad295faac296
SSDEEP

768:Th+jAcTtGiZQVrXS6Pk6PbXEShEYVpHDeyUExVGEeyN5/Y5/U5/+Zc0KCrA/+cbM:TW7YVpHDd0HN1OIM42XQ

Score

4^/10

execution

Malware Config

Signatures

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\INF\setupapi.ev3	DrvInst.exe
File opened for modification	C:\Windows\INF\setupapi.ev1	DrvInst.exe
File opened for modification	C:\Windows\INF\setupapi.dev.log	DrvInst.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
3068	powershell.exe
2816	powershell.exe

Modifies data under HKEY_USERS 43 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs	DrvInst.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\LanguageList = 65006e002d0055005300000065006e0000000000	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\My	DrvInst.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3068	powershell.exe
2816	powershell.exe

Suspicious use of AdjustPrivilegeToken 15 IoCs

description	pid	Process
Token: SeDebugPrivilege	3068	powershell.exe
Token: SeDebugPrivilege	2816	powershell.exe
Token: SeBackupPrivilege	2900	vssvc.exe
Token: SeRestorePrivilege	2900	vssvc.exe
Token: SeAuditPrivilege	2900	vssvc.exe
Token: SeRestorePrivilege	2012	DrvInst.exe
Token: SeRestorePrivilege	2012	DrvInst.exe
Token: SeRestorePrivilege	2012	DrvInst.exe
Token: SeRestorePrivilege	2012	DrvInst.exe
Token: SeRestorePrivilege	2012	DrvInst.exe
Token: SeRestorePrivilege	2012	DrvInst.exe
Token: SeRestorePrivilege	2012	DrvInst.exe
Token: SeLoadDriverPrivilege	2012	DrvInst.exe
Token: SeLoadDriverPrivilege	2012	DrvInst.exe
Token: SeLoadDriverPrivilege	2012	DrvInst.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2064 wrote to memory of 3052	2064	cmd.exe	30
PID 2064 wrote to memory of 3052	2064	cmd.exe	30
PID 2064 wrote to memory of 3052	2064	cmd.exe	30
PID 2064 wrote to memory of 3068	2064	cmd.exe	31
PID 2064 wrote to memory of 3068	2064	cmd.exe	31
PID 2064 wrote to memory of 3068	2064	cmd.exe	31
PID 2064 wrote to memory of 2816	2064	cmd.exe	34
PID 2064 wrote to memory of 2816	2064	cmd.exe	34
PID 2064 wrote to memory of 2816	2064	cmd.exe	34

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\straya_1.9.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:2064
- C:\Windows\system32\chcp.com
  chcp 65001
  2⤵
  PID:3052
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -ExecutionPolicy Unrestricted -NoProfile Enable-ComputerRestore -Drive 'C:'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3068
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -ExecutionPolicy Unrestricted -NoProfile Checkpoint-Computer -Description 'Tweakify restore point'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2816

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2900

C:\Windows\system32\DrvInst.exe
DrvInst.exe "1" "200" "STORAGE\VolumeSnapshot\HarddiskVolumeSnapshot19" "" "" "61530dda3" "0000000000000000" "00000000000003D8" "0000000000000590"
1⤵
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
PID:2012

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
342e37e2d03a6e7280a29c9f3cff0f80

SHA1
d33b8133c34339d70c326979a7835015ee222a78

SHA256
82ba236955bbb4191a4c77b2eba4d75c8706e6a39fdf09899ca836a75dee4598

SHA512
48cf0384444bbbc8c233010db136e65febddd9eea07a0693641ff9b6fcd64cd7b0068158b590f927a4a775d322aa18b439a4a145f4b9b7f482e7669c9114218d

Download Submit
memory/2816-18-0x000000001B3B0000-0x000000001B692000-memory.dmp

Filesize
2.9MB

Download
memory/2816-19-0x0000000001FC0000-0x0000000001FC8000-memory.dmp

Filesize
32KB

Download
memory/3068-4-0x000007FEF46DE000-0x000007FEF46DF000-memory.dmp

Filesize
4KB

Download
memory/3068-5-0x000000001B200000-0x000000001B4E2000-memory.dmp

Filesize
2.9MB

Download
memory/3068-6-0x0000000002470000-0x0000000002478000-memory.dmp

Filesize
32KB

Download
memory/3068-7-0x000007FEF4420000-0x000007FEF4DBD000-memory.dmp

Filesize
9.6MB

Download
memory/3068-8-0x000007FEF4420000-0x000007FEF4DBD000-memory.dmp

Filesize
9.6MB

Download
memory/3068-9-0x000007FEF4420000-0x000007FEF4DBD000-memory.dmp

Filesize
9.6MB

Download
memory/3068-10-0x000007FEF4420000-0x000007FEF4DBD000-memory.dmp

Filesize
9.6MB

Download
memory/3068-11-0x000007FEF4420000-0x000007FEF4DBD000-memory.dmp

Filesize
9.6MB

Download
memory/3068-12-0x000007FEF4420000-0x000007FEF4DBD000-memory.dmp

Filesize
9.6MB

Download