7e9f8d4be691c76607d87e7a2139ad4f849d5bb4c443c82faa0143cefd75ad65

Reason

Machine shutdown

General

Target

christmaslistcountdown.zip
Size

54KB
MD5

193195995d084cfca0b8130170d92cf0
SHA1

1d2193cdeeefe2b09701ebd2ee99e8f270987d9d
SHA256

7e9f8d4be691c76607d87e7a2139ad4f849d5bb4c443c82faa0143cefd75ad65
SHA512

f86e133384663ac74af29d5ffaf128b1e7a2d46ed78f2a5356af499981eb8e7cb3da152a642e01a3666574abe919c07febe95874e45386ec3aa250f2efd81a62
SSDEEP

1536:TTZh8DH0pwi06rIUEPDrRwMj3+w7KWBmZ33w7KWBmZ3T:fZh8DH0Z06rInPfRwM7TVIZwVIZD

Score

6^/10

Malware Config

Signatures

Drops desktop.ini file(s) 7 IoCs

description	ioc	Process
File opened for modification	C:\Users\Public\Music\desktop.ini	wmplayer.exe
File opened for modification	C:\Users\Admin\Videos\desktop.ini	wmplayer.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	wmplayer.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	wmplayer.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	wmplayer.exe
File opened for modification	C:\Users\Admin\Music\desktop.ini	wmplayer.exe
File opened for modification	C:\Users\Public\desktop.ini	wmplayer.exe

Enumerates connected drives 3 TTPs 24 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\S:	wmplayer.exe
File opened (read-only)	\??\F:	wmplayer.exe
File opened (read-only)	\??\G:	wmplayer.exe
File opened (read-only)	\??\H:	wmplayer.exe
File opened (read-only)	\??\J:	wmplayer.exe
File opened (read-only)	\??\K:	wmplayer.exe
File opened (read-only)	\??\P:	wmplayer.exe
File opened (read-only)	\??\R:	wmplayer.exe
File opened (read-only)	\??\V:	wmplayer.exe
File opened (read-only)	\??\W:	wmplayer.exe
File opened (read-only)	\??\X:	wmplayer.exe
File opened (read-only)	\??\I:	wmplayer.exe
File opened (read-only)	\??\Q:	wmplayer.exe
File opened (read-only)	\??\U:	wmplayer.exe
File opened (read-only)	\??\Y:	wmplayer.exe
File opened (read-only)	\??\Z:	wmplayer.exe
File opened (read-only)	\??\E:	wmplayer.exe
File opened (read-only)	\??\N:	wmplayer.exe
File opened (read-only)	\??\T:	wmplayer.exe
File opened (read-only)	\??\A:	wmplayer.exe
File opened (read-only)	\??\B:	wmplayer.exe
File opened (read-only)	\??\L:	wmplayer.exe
File opened (read-only)	\??\M:	wmplayer.exe
File opened (read-only)	\??\O:	wmplayer.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\WindowsUpdate.log	ehshell.exe

Checks processor information in registry 2 TTPs 4 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	ehshell.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~Mhz	ehshell.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	ehshell.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	ehshell.exe

Enumerates system info in registry 2 TTPs 32 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\1\Component Information	csrss.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\SYSTEM\MultifunctionAdapter\0\KeyboardController\0\KeyboardPeripheral\0	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\1\Identifier	csrss.exe
Key queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\Identifier	csrss.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\1	csrss.exe
Key queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\2	csrss.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter	csrss.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\2	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\2\Identifier	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\2\Component Information	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\1\Configuration Data	csrss.exe
Key queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\KeyboardController	csrss.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\SYSTEM\MultifunctionAdapter\0\KeyboardController\0	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\KeyboardController\0\Configuration Data	csrss.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\SYSTEM\MultifunctionAdapter\0\KeyboardController\0\KeyboardPeripheral	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\KeyboardController\0\KeyboardPeripheral\0\Identifier	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\Configuration Data	csrss.exe
Key queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0	csrss.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\SYSTEM\MultifunctionAdapter\1\KeyboardController	csrss.exe
Key queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\1	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\KeyboardController\0\KeyboardPeripheral\0\Configuration Data	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\KeyboardController\0\KeyboardPeripheral\0\Component Information	csrss.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0	csrss.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\SYSTEM\MultifunctionAdapter\0\KeyboardController	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\KeyboardController\0\Component Information	csrss.exe
Key enumerated	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\Component Information	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\2\Configuration Data	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\KeyboardController\0\Identifier	csrss.exe
Key enumerated	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter	csrss.exe
Key queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\KeyboardController\0\KeyboardPeripheral	csrss.exe

Modifies data under HKEY_USERS 9 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\ThemeManager	winlogon.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\ThemeManager\ThemeActive = "1"	winlogon.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\ThemeManager\LoadedBefore = "1"	winlogon.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\ThemeManager\LastUserLangID = "1041"	winlogon.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\ThemeManager\LastLoadedDPI = "96"	winlogon.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\ThemeManager\DllName = "%SystemRoot%\\resources\\themes\\Aero\\Aero.msstyles"	winlogon.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\ThemeManager\ColorName = "NormalColor"	winlogon.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Control Panel\Desktop\MuiCached\MachinePreferredUILanguages = 6a0061002d004a00500000000000	winlogon.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\ThemeManager\SizeName = "NormalSize"	winlogon.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\MIME\Database\Content Type\application/x-wmplayer	wmplayer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\MIME\Database\Content Type\application/x-wmplayer\CLSID = "{cd3afa96-b84f-48f0-9393-7edc34128127}"	wmplayer.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1832	ehshell.exe
1832	ehshell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1832	ehshell.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

description	pid	Process
Token: SeDebugPrivilege	1832	ehshell.exe
Token: 33	1748	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	1748	AUDIODG.EXE
Token: 33	1748	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	1748	AUDIODG.EXE
Token: SeShutdownPrivilege	1832	ehshell.exe
Token: SeShutdownPrivilege	1208	LogonUI.exe
Token: SeShutdownPrivilege	1208	LogonUI.exe
Token: SeShutdownPrivilege	1208	LogonUI.exe
Token: SeShutdownPrivilege	932	winlogon.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1832 wrote to memory of 1408	1832	ehshell.exe	29
PID 1832 wrote to memory of 1408	1832	ehshell.exe	29
PID 1832 wrote to memory of 1408	1832	ehshell.exe	29
PID 1832 wrote to memory of 1408	1832	ehshell.exe	29
PID 1820 wrote to memory of 1208	1820	csrss.exe	36
PID 1820 wrote to memory of 1208	1820	csrss.exe	36
PID 932 wrote to memory of 1208	932	winlogon.exe	36
PID 932 wrote to memory of 1208	932	winlogon.exe	36
PID 932 wrote to memory of 1208	932	winlogon.exe	36
PID 1820 wrote to memory of 1208	1820	csrss.exe	36
PID 1820 wrote to memory of 1208	1820	csrss.exe	36
PID 1820 wrote to memory of 1208	1820	csrss.exe	36
PID 1820 wrote to memory of 1208	1820	csrss.exe	36
PID 1820 wrote to memory of 1208	1820	csrss.exe	36
PID 1820 wrote to memory of 1208	1820	csrss.exe	36
PID 1820 wrote to memory of 1208	1820	csrss.exe	36
PID 1820 wrote to memory of 1208	1820	csrss.exe	36

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012
Uses Volume Shadow Copy WMI provider
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Windows\Explorer.exe
C:\Windows\Explorer.exe /idlist,,C:\Users\Admin\AppData\Local\Temp\christmaslistcountdown.zip
1⤵
PID:1532

C:\Windows\ehome\ehshell.exe
"C:\Windows\ehome\ehshell.exe"
1⤵
- Drops file in Windows directory
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1832
- C:\Program Files (x86)\Windows Media Player\wmplayer.exe
  "C:\Program Files (x86)\Windows Media Player\wmplayer.exe" /SkipFUE /RemoteOCXLaunch /SuppressDialogs
  2⤵
  - Drops desktop.ini file(s)
  - Enumerates connected drives
  - Modifies registry class
  PID:1408

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x570
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1748

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x0
1⤵
PID:1984

C:\Windows\system32\csrss.exe
%SystemRoot%\system32\csrss.exe ObjectDirectory=\Windows SharedSection=1024,20480,768 Windows=On SubSystemType=Windows ServerDll=basesrv,1 ServerDll=winsrv:UserServerDllInitialization,3 ServerDll=winsrv:ConServerDllInitialization,2 ServerDll=sxssrv,4 ProfileControl=Off MaxRequestThreads=16
1⤵
- Enumerates system info in registry
- Suspicious use of WriteProcessMemory
PID:1820

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:932
- C:\Windows\system32\LogonUI.exe
  "LogonUI.exe" /flags:0x0
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1208

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x1
1⤵
PID:1856

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Media Player\アートキャッシュ\LocalMLS\{C561A488-1883-4ED7-BC97-0DDB95EECD5C}.jpg

Filesize
22KB

MD5
35e787587cd3fa8ed360036c9fca3df2

SHA1
84c76a25c6fe336f6559c033917a4c327279886d

SHA256
98c49a68ee578e10947209ebc17c0ad188ed39c7d0c91a2b505f317259c0c9b2

SHA512
aeec3eed5a52670f4cc35935005bb04bb435964a1975e489b8e101adfbce278142fd1a6c475860b7ccb414afe5e24613361a66d92f457937de9b21a7a112e1f9

Download Submit
memory/1208-134-0x0000000002780000-0x0000000002781000-memory.dmp

Filesize
4KB

Download
memory/1408-69-0x0000000000140000-0x0000000000141000-memory.dmp

Filesize
4KB

Download
memory/1408-132-0x0000000003E60000-0x0000000003E6A000-memory.dmp

Filesize
40KB

Download
memory/1408-128-0x0000000003E60000-0x0000000003E6A000-memory.dmp

Filesize
40KB

Download
memory/1832-67-0x00000000022B0000-0x0000000002330000-memory.dmp

Filesize
512KB

Download
memory/1832-71-0x00000000022B0000-0x0000000002330000-memory.dmp

Filesize
512KB

Download
memory/1832-62-0x0000000001FB0000-0x0000000001FB1000-memory.dmp

Filesize
4KB

Download
memory/1832-63-0x000000001C910000-0x000000001C9AE000-memory.dmp

Filesize
632KB

Download
memory/1832-64-0x000000001D6B0000-0x000000001D768000-memory.dmp

Filesize
736KB

Download
memory/1832-54-0x00000000022B0000-0x0000000002330000-memory.dmp

Filesize
512KB

Download
memory/1832-68-0x00000000022B0000-0x0000000002330000-memory.dmp

Filesize
512KB

Download
memory/1832-60-0x000000001DDA0000-0x000000001E3A8000-memory.dmp

Filesize
6.0MB

Download
memory/1832-72-0x00000000022B0000-0x0000000002330000-memory.dmp

Filesize
512KB

Download
memory/1832-61-0x000000001E3B0000-0x000000001E534000-memory.dmp

Filesize
1.5MB

Download
memory/1832-75-0x0000000001FB0000-0x0000000001FB1000-memory.dmp

Filesize
4KB

Download
memory/1832-96-0x00000000022B0000-0x0000000002330000-memory.dmp

Filesize
512KB

Download
memory/1832-59-0x00000000022B0000-0x0000000002330000-memory.dmp

Filesize
512KB

Download
memory/1832-58-0x00000000022B0000-0x0000000002330000-memory.dmp

Filesize
512KB

Download
memory/1832-57-0x000000001B4F0000-0x000000001B548000-memory.dmp

Filesize
352KB

Download
memory/1832-55-0x00000000022B0000-0x0000000002330000-memory.dmp

Filesize
512KB

Download
memory/1856-135-0x0000000002780000-0x0000000002781000-memory.dmp

Filesize
4KB

Download
memory/1984-133-0x0000000002990000-0x0000000002991000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

Errors

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads