60d94692d731fce2eef39ae2814807a0042eae1fe5a82f43c44f5ab69718604b

Analysis

max time kernel
90s
max time network
150s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
24-11-2022 11:01

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General

Target

Baidu_Com_90000215.exe
Size

1.4MB
MD5

20dbd1541448c659e921ca523da62e8b
SHA1

59dfc6db7e026c5a27e89983d55be83aadf3a909
SHA256

0215531b7de01049eb626ab9c35f5e1264263bd11b120964a6ee34193e60561a
SHA512

ae4392893614f76bd2588cd9efa46dc6a5e14e3f2d23cf6da2d158f9bc70201a074558e8d103640c78a58d5dac5a84b1096e0a459c7917d6f8f5bb2adf71ff0b
SSDEEP

24576:aCfFgOHDg89bvfpETrWTVvqPldRv4dyB41Zk1J03xm4U5r1mqF+R3qo06QvuEjGn:RqOFbnaTrTTA041ZAKxFW8qFMan6Kudn

Score

7^/10

bootkit persistence

Malware Config

Signatures

Loads dropped DLL 4 IoCs

Processes:

Baidu_Com_90000215.exe

pid process

864 Baidu_Com_90000215.exe
864 Baidu_Com_90000215.exe
864 Baidu_Com_90000215.exe
864 Baidu_Com_90000215.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:

Baidu_Com_90000215.exe

description ioc process

File opened for modification \??\PhysicalDrive0 Baidu_Com_90000215.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

pid	process
864	Baidu_Com_90000215.exe
864	Baidu_Com_90000215.exe
864	Baidu_Com_90000215.exe
864	Baidu_Com_90000215.exe

description	ioc	process
File opened for modification	\??\PhysicalDrive0	Baidu_Com_90000215.exe

Modifies registry class 3 IoCs

Processes:

Baidu_Com_90000215.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\metnsd\clsid	Baidu_Com_90000215.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\metnsd	Baidu_Com_90000215.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\metnsd\clsid\SequenceID = 501a4cd94f408742a36548d91c78e02a	Baidu_Com_90000215.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

Baidu_Com_90000215.exe

pid process

864 Baidu_Com_90000215.exe
Suspicious use of SendNotifyMessage 1 IoCs

Processes:

Baidu_Com_90000215.exe

pid process

864 Baidu_Com_90000215.exe

pid	process
864	Baidu_Com_90000215.exe

pid	process
864	Baidu_Com_90000215.exe

C:\Users\Admin\AppData\Local\Temp\Baidu_Com_90000215.exe
"C:\Users\Admin\AppData\Local\Temp\Baidu_Com_90000215.exe"
1⤵
- Loads dropped DLL
- Writes to the Master Boot Record (MBR)
- Modifies registry class
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:864

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Bootkit

T1067

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\nstACD.tmp\BDMDownload.dll
Filesize
158KB

MD5
d184763cb4e62d531193978de7b82db2

SHA1
f4824e6e58f50b1fd89396afa17d0f97d86895f7

SHA256
63a233664064e22fd3260e4dc06293b8fa724e62071ad1cf8af9a4bb453e1dea

SHA512
25bb657827c1c4ce410346e11e60fe954f62100731bd730405cba666d4eb7009dfd394053e2afabfd9981ea0eea5fa625f24805a1d4d24c7da44f6449eda7e1b

Download Submit
\Users\Admin\AppData\Local\Temp\nstACD.tmp\BDMSkin.dll
Filesize
1.3MB

MD5
b540a866191f7fd20f5e6355bc2b094e

SHA1
df01a0c011e88a1f860db41d474d3fe893f06082

SHA256
ce3044e92a827fce76a75dbd817545506dcab76a5f4edac3c9cf37236a1eecb6

SHA512
e65aa73a9e8118176f294edeb7a9dc3a71319b218a45de6073622b868bee2fab9d7b6f76577f846cc940b4b949ee0110fbb449df3d77c922464cf6ded1408331

Download Submit
\Users\Admin\AppData\Local\Temp\nstACD.tmp\dl.dll
Filesize
1.9MB

MD5
763b532d651f0ad5e135d9b57bf4fba4

SHA1
23f1302f904a67a1fe0d48e11a435c2f36336196

SHA256
50b3c45ede6fd2d77c4f040242b2174289767b18a3a084e7046133b05f93e173

SHA512
a4ec0f5bfa30d3558935f4075a75aebf080ece324a550c573d8a424730693b030cd26b4862973e8da8937e610c287d64e96c2fd952b59324ed1822919a00737c

Download Submit
\Users\Admin\AppData\Local\Temp\nstACD.tmp\tmpe_nxps.dll
Filesize
636KB

MD5
f0797dbe1af08f015da9b298d933bd43

SHA1
653a424c60cc4795a75f2f661f869c4a60678976

SHA256
3f3bfbfe70a4381d4e7f410163802a50ab21da0c01855944d52e07500bc519ce

SHA512
de9a8ba4218a4155eb2cd6c37f857e41402caf2d439ae88d50e73bf6088c9d0151070f265462042d98caf1c4990093518e3d3a2d23f918340d70699118af3a99

Download Submit
memory/864-54-0x0000000075141000-0x0000000075143000-memory.dmp

Filesize
8KB

Download
memory/864-63-0x0000000004BE0000-0x0000000004DCD000-memory.dmp

Filesize
1.9MB

Download