923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666

Analysis

max time kernel
150s
max time network
159s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
06/12/2022, 16:30

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General

Target

923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666.exe
Size

240KB
MD5

7d665965ddaf263a6d8256ff70745e8a
SHA1

6a20c5ae5bc01e92dc18e645e5a92fb739437e32
SHA256

923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666
SHA512

366143229f2e8770a5b40c89ee534d40e0c1b4d0f21c6f98fe950b590eb1add0077a0a3484cb18d376f4f8f0a7ccfbb5c95fa9759dc871c8fc7ae8265cc96e15
SSDEEP

3072:jDN7LCCyS2ZzVokNTGUAuIvDpqDpsiNJkQ4kCLQ619M61D5WEz2Xp:ryS2ZzVzNSU9IUDGizikcPD5WEz2

Score

6^/10

bootkit persistence

Malware Config

Signatures

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Windows\CurrentVersion\Run	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Uttstm = "C:\\Users\\Admin\\AppData\\Roaming\\Uttstm.exe"	iexplore.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1067

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2432 set thread context of 1356	2432	923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666.exe	83
PID 1356 set thread context of 684	1356	923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666.exe	84

Modifies Internet Explorer settings 1 TTPs 18 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{9A66F2E4-7924-11ED-BF5F-FAE5CAF4041A} = "0"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "377508383"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	IEXPLORE.EXE

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
684	923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666.exe
684	923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666.exe
684	923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	684	923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666.exe
Token: SeDebugPrivilege	2536	iexplore.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
176	IEXPLORE.EXE

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
2432	923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666.exe
1356	923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666.exe
176	IEXPLORE.EXE
176	IEXPLORE.EXE
1544	IEXPLORE.EXE
1544	IEXPLORE.EXE
1544	IEXPLORE.EXE
1544	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2432 wrote to memory of 1356	2432	923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666.exe	83
PID 2432 wrote to memory of 1356	2432	923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666.exe	83
PID 2432 wrote to memory of 1356	2432	923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666.exe	83
PID 2432 wrote to memory of 1356	2432	923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666.exe	83
PID 2432 wrote to memory of 1356	2432	923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666.exe	83
PID 2432 wrote to memory of 1356	2432	923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666.exe	83
PID 2432 wrote to memory of 1356	2432	923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666.exe	83
PID 2432 wrote to memory of 1356	2432	923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666.exe	83
PID 1356 wrote to memory of 684	1356	923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666.exe	84
PID 1356 wrote to memory of 684	1356	923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666.exe	84
PID 1356 wrote to memory of 684	1356	923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666.exe	84
PID 1356 wrote to memory of 684	1356	923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666.exe	84
PID 1356 wrote to memory of 684	1356	923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666.exe	84
PID 1356 wrote to memory of 684	1356	923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666.exe	84
PID 1356 wrote to memory of 684	1356	923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666.exe	84
PID 1356 wrote to memory of 684	1356	923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666.exe	84
PID 1356 wrote to memory of 684	1356	923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666.exe	84
PID 684 wrote to memory of 2536	684	923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666.exe	86
PID 684 wrote to memory of 2536	684	923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666.exe	86
PID 684 wrote to memory of 2536	684	923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666.exe	86
PID 2536 wrote to memory of 176	2536	iexplore.exe	87
PID 2536 wrote to memory of 176	2536	iexplore.exe	87
PID 684 wrote to memory of 2536	684	923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666.exe	86
PID 684 wrote to memory of 2536	684	923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666.exe	86
PID 176 wrote to memory of 1544	176	IEXPLORE.EXE	88
PID 176 wrote to memory of 1544	176	IEXPLORE.EXE	88
PID 176 wrote to memory of 1544	176	IEXPLORE.EXE	88

C:\Users\Admin\AppData\Local\Temp\923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666.exe
"C:\Users\Admin\AppData\Local\Temp\923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2432
- C:\Users\Admin\AppData\Local\Temp\923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666.exe
  "C:\Users\Admin\AppData\Local\Temp\923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666.exe"
  2⤵
  - Writes to the Master Boot Record (MBR)
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1356
- - C:\Users\Admin\AppData\Local\Temp\923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666.exe
    "C:\Users\Admin\AppData\Local\Temp\923a30bdef24cbfbfd9fc08ab30f3f01e3dc980ef7db1906abfc81b9b45c3666.exe"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:684
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
      4⤵
      Adds Run key to start application
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2536
    - - C:\Program Files\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files\Internet Explorer\IEXPLORE.EXE"
        5⤵
        Modifies Internet Explorer settings
        Suspicious use of FindShellTrayWindow
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:176
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:176 CREDAT:17410 /prefetch:2
        6⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:1544

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Bootkit

T1067

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/684-141-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/684-143-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/684-145-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/684-146-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1356-135-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1356-140-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1356-144-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download