e1b3ae8fc890c6588e5656f77ef2747ae7ddfc90b6530b240c0c5b9d0ab3ce8c

Analysis

max time kernel
120s
max time network
122s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
28-05-2024 14:15

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

$TEMP/dxredist/dsetup32.dll
Size

1.5MB
MD5

d8fa7bb4fe10251a239ed75055dd6f73
SHA1

76c4bd2d8f359f7689415efc15e3743d35673ae8
SHA256

fb0e534f9b0926e518f1c2980640dfd29f14217cdfa37cf3a0c13349127ed9a8
SHA512

73f633179b1340c1c14d0002b72e44cab1919d0ef174f307e4bfe6de240b0b6ef233e67a8b0a0cd677556865ee7b88c6de152045a580ab9fbf1a50d2db0673b4
SSDEEP

24576:CIQ+ddddddddddddddxOOOOOOOOOOOOOO2iWeXiWeXiWeXiWeXiWeXiWeXiWeXi+:CIQsOOOOOOOOOOOOOO2iWeXiWeXiWeXf

Score

4^/10

Malware Config

Signatures

Drops file in Windows directory 5 IoCs

description	ioc	Process
File opened for modification	C:\Windows\INF\setupapi.dev.log	DrvInst.exe
File opened for modification	C:\Windows\Logs\DXError.log	rundll32.exe
File opened for modification	C:\Windows\Logs\DirectX.log	rundll32.exe
File opened for modification	C:\Windows\INF\setupapi.ev3	DrvInst.exe
File opened for modification	C:\Windows\INF\setupapi.ev1	DrvInst.exe

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

System Information Discovery
T1082

Modifies data under HKEY_USERS 43 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\CA\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\SmartCardRoot\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\TrustedPeople\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\trust\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\CA\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\CA\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\trust\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\trust\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\SmartCardRoot\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\trust\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	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\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\Disallowed\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	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
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\My	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\CA\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\TrustedPeople\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\trust\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\trust\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\Root\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\Root\CRLs	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	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\CA\CTLs	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\Root\CTLs	DrvInst.exe

Suspicious use of AdjustPrivilegeToken 13 IoCs

description	pid	Process
Token: SeBackupPrivilege	2540	vssvc.exe
Token: SeRestorePrivilege	2540	vssvc.exe
Token: SeAuditPrivilege	2540	vssvc.exe
Token: SeRestorePrivilege	2544	DrvInst.exe
Token: SeRestorePrivilege	2544	DrvInst.exe
Token: SeRestorePrivilege	2544	DrvInst.exe
Token: SeRestorePrivilege	2544	DrvInst.exe
Token: SeRestorePrivilege	2544	DrvInst.exe
Token: SeRestorePrivilege	2544	DrvInst.exe
Token: SeRestorePrivilege	2544	DrvInst.exe
Token: SeLoadDriverPrivilege	2544	DrvInst.exe
Token: SeLoadDriverPrivilege	2544	DrvInst.exe
Token: SeLoadDriverPrivilege	2544	DrvInst.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2936 wrote to memory of 2264	2936	rundll32.exe	28
PID 2936 wrote to memory of 2264	2936	rundll32.exe	28
PID 2936 wrote to memory of 2264	2936	rundll32.exe	28
PID 2936 wrote to memory of 2264	2936	rundll32.exe	28
PID 2936 wrote to memory of 2264	2936	rundll32.exe	28
PID 2936 wrote to memory of 2264	2936	rundll32.exe	28
PID 2936 wrote to memory of 2264	2936	rundll32.exe	28

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

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$TEMP\dxredist\dsetup32.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2936
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$TEMP\dxredist\dsetup32.dll,#1
  2⤵
  - Drops file in Windows directory
  PID:2264

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2540

C:\Windows\system32\DrvInst.exe
DrvInst.exe "1" "200" "STORAGE\VolumeSnapshot\HarddiskVolumeSnapshot19" "" "" "61530dda3" "0000000000000000" "00000000000002F4" "00000000000003D0"
1⤵
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
PID:2544

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\Logs\DXError.log

Filesize
238B

MD5
a8d289c014beddb9d779a59c7d3be0ae

SHA1
746c36cac1c16b055dffed00e321e3035974ce55

SHA256
13692e0aece2e8a97b8d826e370fd7b61a6deb5e3b7532b6f45ad44d24799716

SHA512
2f02fd8651cb57ac15f7148b6b7289995ee7ffb894736d7763aa9e7d679d0f08a4b0ba632db585c820ba696c370af4205083ee29ee801c4959aadb11b20750ae

Download Submit
C:\Windows\Logs\DirectX.log

Filesize
515B

MD5
83c4d1fb5cc65219c2429e252e516ee3

SHA1
d4cf9f543545df34d58f3972d5f6ae0e5a976843

SHA256
6766171635ee6db84bb47f0361767254a72a4b10fefb57a5f7da02ed7e0b9b74

SHA512
3bbde1c2b39e78fb537969354a6715ec0ec03368e5ae4126db86df1b8bca9e89b4a5e0546aa2e9f330e394fde536e71c3b64d910347bd848846f56b98d036b5d

Download Submit
C:\Windows\Logs\DirectX.log

Filesize
958B

MD5
693f2d8783422e44f2b7b6c7e115ae54

SHA1
7b39ea1db58df3ed466abd9a3a8d603ae349911b

SHA256
2402bb214874fa9157fb0b0a44f051d09ceed4dd4cddb8686283babe8ac3d8da

SHA512
b58d9541cafe1efd2f52eccc46d1de697015e91862b9f90e915adfb16ec5ee44c2c569c9d6df1bb3a754c779897241087de100f40133474d2f7c4169a4cf5355

Download Submit