e1b3ae8fc890c6588e5656f77ef2747ae7ddfc90b6530b240c0c5b9d0ab3ce8c

Analysis

max time kernel
130s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28-05-2024 14:15

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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 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Logs\DXError.log	rundll32.exe
File opened for modification	C:\Windows\Logs\DirectX.log	rundll32.exe

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

System Information Discovery
T1082

Checks SCSI registry key(s) 3 TTPs 5 IoCs

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

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Device Parameters	vssvc.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Device Parameters	vssvc.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Device Parameters\Partmgr	vssvc.exe
Set value (data)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Device Parameters\Partmgr\PartitionTableCache = 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	vssvc.exe
Set value (data)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Device Parameters\Partmgr\SnapshotDataCache = 534e41505041525401000000700000008ec7416a0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	vssvc.exe

Suspicious use of AdjustPrivilegeToken 11 IoCs

description	pid	Process
Token: SeBackupPrivilege	4956	vssvc.exe
Token: SeRestorePrivilege	4956	vssvc.exe
Token: SeAuditPrivilege	4956	vssvc.exe
Token: SeBackupPrivilege	1596	srtasks.exe
Token: SeRestorePrivilege	1596	srtasks.exe
Token: SeSecurityPrivilege	1596	srtasks.exe
Token: SeTakeOwnershipPrivilege	1596	srtasks.exe
Token: SeBackupPrivilege	1596	srtasks.exe
Token: SeRestorePrivilege	1596	srtasks.exe
Token: SeSecurityPrivilege	1596	srtasks.exe
Token: SeTakeOwnershipPrivilege	1596	srtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4400 wrote to memory of 3992	4400	rundll32.exe	91
PID 4400 wrote to memory of 3992	4400	rundll32.exe	91
PID 4400 wrote to memory of 3992	4400	rundll32.exe	91

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:4400
- 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:3992

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Checks SCSI registry key(s)
- Suspicious use of AdjustPrivilegeToken
PID:4956

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1344 --field-trial-handle=2276,i,11674642242468042059,14711253743544118298,262144 --variations-seed-version /prefetch:8
1⤵
PID:1708

C:\Windows\system32\srtasks.exe
C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1596

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\Logs\DirectX.log

Filesize
960B

MD5
07d1bda353e620dba91d1a61feb148cc

SHA1
d69989889145e3535f720bf16caf7baffb378c77

SHA256
6774cba0fcff4d3a280617a637d6301348534f0b8eadd90a8142473f5574308c

SHA512
1f30de9f46c79b5edaaad1fadd9cdc61d1948d26472284b75dbb852f6442fa2f20cdecf0803a3fb2e1a2a240488d13e6708a3288542c9b026de53e8c3e0e26b6

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