4da5c99755138be6f7f6080c93b8d9262120dfef363092edef5c11f90f9d06a0

Analysis

max time kernel
23s
max time network
29s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
06/10/2023, 08:11

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Reason

Machine shutdown

Report Analysis Logs

General

Target

OINSTALL.exe
Size

11.8MB
MD5

ed1210b3c515ccdc89c8c919ace0d5c7
SHA1

98ad0c0de859178532ace50c5a3219f7326074f8
SHA256

4da5c99755138be6f7f6080c93b8d9262120dfef363092edef5c11f90f9d06a0
SHA512

c65f72871d819c3d9ed8c429dde870e20a284bb958cb376d7535f4e4749122d274121f836543626bdfd7f9fce227161310ef61034fc9b3f9a0a0788b7071f663
SSDEEP

196608:MxvDEJlrJ/3FMC7ujFXIDelqWRlrZOn+F2lEORWONUzoUz1SmEB9CI4J1GvrzkdN:Ww/3FMRN6el9rInQsAkUz1HOkyki+oA

Score

10^/10

upx

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

exe.dropper

http://officecdn.microsoft.com/pr/492350f6-3a01-4f97-b9c0-c7c6ddf67d60/Office/Data/v32.cab

Signatures

Blocklisted process makes network request 1 IoCs

flow	pid	Process
34	2512	powershell.exe

Executes dropped EXE 1 IoCs

pid	Process
2296	files.dat

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4848-0-0x0000000000400000-0x0000000001A99000-memory.dmp	upx
behavioral2/memory/4848-36-0x0000000000400000-0x0000000001A99000-memory.dmp	upx
behavioral2/memory/4848-44-0x0000000000400000-0x0000000001A99000-memory.dmp	upx
behavioral2/memory/4848-50-0x0000000000400000-0x0000000001A99000-memory.dmp	upx

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\LOGS\DPX\setupact.log	expand.exe
File opened for modification	C:\Windows\LOGS\DPX\setuperr.log	expand.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 15 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent	LogonUI.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "24"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365271"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1"	LogonUI.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2512	powershell.exe
2512	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3964	WMIC.exe
Token: SeSecurityPrivilege	3964	WMIC.exe
Token: SeTakeOwnershipPrivilege	3964	WMIC.exe
Token: SeLoadDriverPrivilege	3964	WMIC.exe
Token: SeSystemProfilePrivilege	3964	WMIC.exe
Token: SeSystemtimePrivilege	3964	WMIC.exe
Token: SeProfSingleProcessPrivilege	3964	WMIC.exe
Token: SeIncBasePriorityPrivilege	3964	WMIC.exe
Token: SeCreatePagefilePrivilege	3964	WMIC.exe
Token: SeBackupPrivilege	3964	WMIC.exe
Token: SeRestorePrivilege	3964	WMIC.exe
Token: SeShutdownPrivilege	3964	WMIC.exe
Token: SeDebugPrivilege	3964	WMIC.exe
Token: SeSystemEnvironmentPrivilege	3964	WMIC.exe
Token: SeRemoteShutdownPrivilege	3964	WMIC.exe
Token: SeUndockPrivilege	3964	WMIC.exe
Token: SeManageVolumePrivilege	3964	WMIC.exe
Token: 33	3964	WMIC.exe
Token: 34	3964	WMIC.exe
Token: 35	3964	WMIC.exe
Token: 36	3964	WMIC.exe
Token: SeIncreaseQuotaPrivilege	3964	WMIC.exe
Token: SeSecurityPrivilege	3964	WMIC.exe
Token: SeTakeOwnershipPrivilege	3964	WMIC.exe
Token: SeLoadDriverPrivilege	3964	WMIC.exe
Token: SeSystemProfilePrivilege	3964	WMIC.exe
Token: SeSystemtimePrivilege	3964	WMIC.exe
Token: SeProfSingleProcessPrivilege	3964	WMIC.exe
Token: SeIncBasePriorityPrivilege	3964	WMIC.exe
Token: SeCreatePagefilePrivilege	3964	WMIC.exe
Token: SeBackupPrivilege	3964	WMIC.exe
Token: SeRestorePrivilege	3964	WMIC.exe
Token: SeShutdownPrivilege	3964	WMIC.exe
Token: SeDebugPrivilege	3964	WMIC.exe
Token: SeSystemEnvironmentPrivilege	3964	WMIC.exe
Token: SeRemoteShutdownPrivilege	3964	WMIC.exe
Token: SeUndockPrivilege	3964	WMIC.exe
Token: SeManageVolumePrivilege	3964	WMIC.exe
Token: 33	3964	WMIC.exe
Token: 34	3964	WMIC.exe
Token: 35	3964	WMIC.exe
Token: 36	3964	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2404	WMIC.exe
Token: SeSecurityPrivilege	2404	WMIC.exe
Token: SeTakeOwnershipPrivilege	2404	WMIC.exe
Token: SeLoadDriverPrivilege	2404	WMIC.exe
Token: SeSystemProfilePrivilege	2404	WMIC.exe
Token: SeSystemtimePrivilege	2404	WMIC.exe
Token: SeProfSingleProcessPrivilege	2404	WMIC.exe
Token: SeIncBasePriorityPrivilege	2404	WMIC.exe
Token: SeCreatePagefilePrivilege	2404	WMIC.exe
Token: SeBackupPrivilege	2404	WMIC.exe
Token: SeRestorePrivilege	2404	WMIC.exe
Token: SeShutdownPrivilege	2404	WMIC.exe
Token: SeDebugPrivilege	2404	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2404	WMIC.exe
Token: SeRemoteShutdownPrivilege	2404	WMIC.exe
Token: SeUndockPrivilege	2404	WMIC.exe
Token: SeManageVolumePrivilege	2404	WMIC.exe
Token: 33	2404	WMIC.exe
Token: 34	2404	WMIC.exe
Token: 35	2404	WMIC.exe
Token: 36	2404	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2404	WMIC.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4880	LogonUI.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 4848 wrote to memory of 3676	4848	OINSTALL.exe	86
PID 4848 wrote to memory of 3676	4848	OINSTALL.exe	86
PID 3676 wrote to memory of 3964	3676	cmd.exe	88
PID 3676 wrote to memory of 3964	3676	cmd.exe	88
PID 4848 wrote to memory of 1812	4848	OINSTALL.exe	89
PID 4848 wrote to memory of 1812	4848	OINSTALL.exe	89
PID 4848 wrote to memory of 2012	4848	OINSTALL.exe	92
PID 4848 wrote to memory of 2012	4848	OINSTALL.exe	92
PID 2012 wrote to memory of 2404	2012	cmd.exe	94
PID 2012 wrote to memory of 2404	2012	cmd.exe	94
PID 4848 wrote to memory of 2348	4848	OINSTALL.exe	95
PID 4848 wrote to memory of 2348	4848	OINSTALL.exe	95
PID 2348 wrote to memory of 2296	2348	cmd.exe	97
PID 2348 wrote to memory of 2296	2348	cmd.exe	97
PID 2348 wrote to memory of 2296	2348	cmd.exe	97
PID 4848 wrote to memory of 2512	4848	OINSTALL.exe	100
PID 4848 wrote to memory of 2512	4848	OINSTALL.exe	100
PID 4848 wrote to memory of 2512	4848	OINSTALL.exe	100
PID 4848 wrote to memory of 4008	4848	OINSTALL.exe	107
PID 4848 wrote to memory of 4008	4848	OINSTALL.exe	107
PID 4848 wrote to memory of 4008	4848	OINSTALL.exe	107
PID 4848 wrote to memory of 4464	4848	OINSTALL.exe	110
PID 4848 wrote to memory of 4464	4848	OINSTALL.exe	110
PID 4848 wrote to memory of 4464	4848	OINSTALL.exe	110

C:\Users\Admin\AppData\Local\Temp\OINSTALL.exe
"C:\Users\Admin\AppData\Local\Temp\OINSTALL.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4848
- C:\Windows\system32\cmd.exe
  "C:\Windows\Sysnative\cmd.exe" /c WMIC /NAMESPACE:\\root\Microsoft\Windows\Defender PATH MSFT_MpPreference call Add ExclusionPath="C:\Users\Admin\AppData\Local\Temp\OINSTALL.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3676
- - C:\Windows\System32\Wbem\WMIC.exe
    WMIC /NAMESPACE:\\root\Microsoft\Windows\Defender PATH MSFT_MpPreference call Add ExclusionPath="C:\Users\Admin\AppData\Local\Temp\OINSTALL.exe"
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:3964
- C:\Windows\system32\reg.exe
  "C:\Windows\Sysnative\reg.exe" add "HKLM\SOFTWARE\Microsoft\Windows Script Host\Settings" /v Enabled /t REG_DWORD /d 1 /f
  2⤵
  PID:1812
- C:\Windows\system32\cmd.exe
  "C:\Windows\Sysnative\cmd.exe" /c WMIC /NAMESPACE:\\root\Microsoft\Windows\Defender PATH MSFT_MpPreference call Add ExclusionPath="C:\Users\Admin\AppData\Local\Temp\files"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2012
- - C:\Windows\System32\Wbem\WMIC.exe
    WMIC /NAMESPACE:\\root\Microsoft\Windows\Defender PATH MSFT_MpPreference call Add ExclusionPath="C:\Users\Admin\AppData\Local\Temp\files"
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2404
- C:\Windows\system32\cmd.exe
  "C:\Windows\Sysnative\cmd.exe" /D /c files.dat -y -pkmsauto
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2348
- - C:\Users\Admin\AppData\Local\Temp\files\files.dat
    files.dat -y -pkmsauto
    3⤵
    - Executes dropped EXE
    PID:2296
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -command "& { (New-Object Net.WebClient).DownloadFile('http://officecdn.microsoft.com/pr/492350f6-3a01-4f97-b9c0-c7c6ddf67d60/Office/Data/v32.cab', 'C:\Users\Admin\AppData\Local\Temp\over353818\v32.cab') }"
  2⤵
  - Blocklisted process makes network request
  - Suspicious behavior: EnumeratesProcesses
  PID:2512
- C:\Windows\SysWOW64\expand.exe
  "expand" v32.cab -F:VersionDescriptor.xml C:\Users\Admin\AppData\Local\Temp\over353818
  2⤵
  - Drops file in Windows directory
  PID:4008
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -command "& { Get-Content C:\Users\Admin\AppData\Local\Temp\over353818\VersionDescriptor.xml | Set-Content -Encoding ASCII v32.txt }
  2⤵
  PID:4464

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa39a0855 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:4880

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_z3yvf50g.25a.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\files\files.dat

Filesize
765KB

MD5
bb5569b15d68c10b7ff2d96b45825120

SHA1
d6d2ed450aae4552f550f59bffe3dd42d8377835

SHA256
4e3b13b56bec0e41778e6506430282bbbd75ccaa600fd4b645ce37dd95b44c8e

SHA512
640a9ae2d40c272638485d37fad4ed83c9c215ce60a0bd3d50db9f033aa79d4c7fc276d018b05f0b1d8446f5e84a7350c857ee8097c05a472c26bfb446038957

Download Submit
C:\Users\Admin\AppData\Local\Temp\files\files.dat

Filesize
765KB

MD5
bb5569b15d68c10b7ff2d96b45825120

SHA1
d6d2ed450aae4552f550f59bffe3dd42d8377835

SHA256
4e3b13b56bec0e41778e6506430282bbbd75ccaa600fd4b645ce37dd95b44c8e

SHA512
640a9ae2d40c272638485d37fad4ed83c9c215ce60a0bd3d50db9f033aa79d4c7fc276d018b05f0b1d8446f5e84a7350c857ee8097c05a472c26bfb446038957

Download Submit
C:\Users\Admin\AppData\Local\Temp\over353818\v32.cab

Filesize
11KB

MD5
1001374b634bbc8566a5ea123cf64abf

SHA1
35d1e1a9eded5354581f08d3207dd69d8cdb24d9

SHA256
2d8c1045e4be1285c5b57790a6e6117e7d8e31f74c191193b7eec0b6a45ec2fe

SHA512
e1fc58952f68e42b86fd222ba7c3c0d3ecfc20f3e83a8b1bdb2551ba70c2bab831729e499beace8c25f87ddaece0fe05d07b9c6a928a8af7b0d79e5cdb3635e2

Download Submit
memory/2512-19-0x0000000002680000-0x00000000026B6000-memory.dmp

Filesize
216KB

Download
memory/2512-35-0x0000000005CB0000-0x0000000005CFC000-memory.dmp

Filesize
304KB

Download
memory/2512-20-0x0000000004DC0000-0x00000000053E8000-memory.dmp

Filesize
6.2MB

Download
memory/2512-21-0x0000000004CC0000-0x0000000004CE2000-memory.dmp

Filesize
136KB

Download
memory/2512-22-0x00000000054F0000-0x0000000005556000-memory.dmp

Filesize
408KB

Download
memory/2512-23-0x0000000005610000-0x0000000005676000-memory.dmp

Filesize
408KB

Download
memory/2512-18-0x0000000002720000-0x0000000002730000-memory.dmp

Filesize
64KB

Download
memory/2512-33-0x0000000005780000-0x0000000005AD4000-memory.dmp

Filesize
3.3MB

Download
memory/2512-34-0x0000000005C80000-0x0000000005C9E000-memory.dmp

Filesize
120KB

Download
memory/2512-17-0x0000000072D90000-0x0000000073540000-memory.dmp

Filesize
7.7MB

Download
memory/2512-43-0x0000000072D90000-0x0000000073540000-memory.dmp

Filesize
7.7MB

Download
memory/2512-37-0x0000000002720000-0x0000000002730000-memory.dmp

Filesize
64KB

Download
memory/2512-38-0x00000000072B0000-0x000000000792A000-memory.dmp

Filesize
6.5MB

Download
memory/2512-39-0x0000000006180000-0x000000000619A000-memory.dmp

Filesize
104KB

Download
memory/4848-36-0x0000000000400000-0x0000000001A99000-memory.dmp

Filesize
22.6MB

Download
memory/4848-0-0x0000000000400000-0x0000000001A99000-memory.dmp

Filesize
22.6MB

Download
memory/4848-44-0x0000000000400000-0x0000000001A99000-memory.dmp

Filesize
22.6MB

Download
memory/4848-50-0x0000000000400000-0x0000000001A99000-memory.dmp

Filesize
22.6MB

Download