36e83b9b1a106572e2ea34ebff73b2b7e3cf54397f36a8ed2ee15dcac375ea9b

Analysis

max time kernel
144s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
05-04-2023 19:51

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General

Target

PDFpower.exe
Size

1.0MB
MD5

fb396e6e8b08308f8d12f2776eda4c85
SHA1

69d56902ca69fb3486221301b76c67dcbd2d6bf6
SHA256

1bd00252035eadae62c03a8396b5b6e3c355082359714d8f02abd9770cb2ef7e
SHA512

a0048c628cdd7b3c1ea607e56c0eb4555f53a82d77a1d3cd0c585ca75c45def76bab64012adad8ddb7bcb7465a87dd0ee365fc2e948ca1517e76b07f4be6a32c
SSDEEP

24576:sW9Ytb3SRxqO8m657w6ZBLmkitKqBCjC0PDgM5A6:sWWtbCJVV1BCjB

Score

6^/10

bootkit persistence

Malware Config

Signatures

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

Processes:

PDFpower.exe

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

Processes:

PDFpower.exe

description ioc process

File opened for modification \??\PhysicalDrive0 PDFpower.exe
Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

3524 5052 WerFault.exe PDFpower.exe
3140 1544 WerFault.exe

description	ioc	process
File opened for modification	\??\PhysicalDrive0	PDFpower.exe

pid	pid_target	process	target process
3524	5052	WerFault.exe	PDFpower.exe
3140	1544	WerFault.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

PDFpower.exe

description	pid	process
Token: SeDebugPrivilege	5052	PDFpower.exe
Token: SeShutdownPrivilege	5052	PDFpower.exe
Token: SeCreatePagefilePrivilege	5052	PDFpower.exe

C:\Users\Admin\AppData\Local\Temp\PDFpower.exe
"C:\Users\Admin\AppData\Local\Temp\PDFpower.exe"
1⤵
- Enumerates connected drives
- Writes to the Master Boot Record (MBR)
- Suspicious use of AdjustPrivilegeToken
PID:5052

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 5052 -s 3380
2⤵
- Program crash
PID:3524

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 5052 -ip 5052
1⤵
PID:3824

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 532 -p 1544 -ip 1544
1⤵
PID:4940

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 1544 -s 1748
1⤵
- Program crash
PID:3140

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Bootkit

T1067

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows Media\12.0\WMSDKNS.XML
Filesize
9KB

MD5
7050d5ae8acfbe560fa11073fef8185d

SHA1
5bc38e77ff06785fe0aec5a345c4ccd15752560e

SHA256
cb87767c4a384c24e4a0f88455f59101b1ae7b4fb8de8a5adb4136c5f7ee545b

SHA512
a7a295ac8921bb3dde58d4bcde9372ed59def61d4b7699057274960fa8c1d1a1daff834a93f7a0698e9e5c16db43af05e9fd2d6d7c9232f7d26ffcff5fc5900b

Download Submit
memory/5052-133-0x0000000000C90000-0x0000000000D9C000-memory.dmp

Filesize
1.0MB

Download
memory/5052-134-0x00000000059F0000-0x0000000005A00000-memory.dmp

Filesize
64KB

Download
memory/5052-135-0x0000000006220000-0x000000000674C000-memory.dmp

Filesize
5.2MB

Download
memory/5052-137-0x000000000AB40000-0x000000000ABA6000-memory.dmp

Filesize
408KB

Download
memory/5052-138-0x00000000059F0000-0x0000000005A00000-memory.dmp

Filesize
64KB

Download
memory/5052-139-0x00000000059F0000-0x0000000005A00000-memory.dmp

Filesize
64KB

Download
memory/5052-140-0x000000000BBA0000-0x000000000BBD8000-memory.dmp

Filesize
224KB

Download
memory/5052-141-0x000000000BCF0000-0x000000000BCFE000-memory.dmp

Filesize
56KB

Download
memory/5052-144-0x0000000005BF0000-0x0000000005C12000-memory.dmp

Filesize
136KB

Download
memory/5052-145-0x000000000A6A0000-0x000000000A6A8000-memory.dmp

Filesize
32KB

Download
memory/5052-146-0x00000000059F0000-0x0000000005A00000-memory.dmp

Filesize
64KB

Download