a8b4f9fc0229d5095afd02cf69e4b59606a01b8edd7bd60e6d3e004687e729e4

Analysis

max time kernel
117s
max time network
119s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
01-07-2024 02:23

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General

Target

79f8d7b9ac8178b6f9d7daafa17309bc.exe
Size

36.0MB
MD5

79f8d7b9ac8178b6f9d7daafa17309bc
SHA1

c66e9288f288e4158d779263e1a912320668f52b
SHA256

a8b4f9fc0229d5095afd02cf69e4b59606a01b8edd7bd60e6d3e004687e729e4
SHA512

bb72da5942b0ce723003db1fc112ef69ec94be35200b2d557b5c70ec1aa12767ac5e9c186c57e432d5f9c528531fd2c29cac48f07212f4f55143769efb771918
SSDEEP

786432:9wYnIe84d7m8/Mw5CaXv2S3IPlv5OqlICX1atGLJcez+yzqQ:9wYn7dX/uyv28Id5PlIQk0qeyOqQ

Score

7^/10

bootkit discovery persistence

Malware Config

Signatures

Loads dropped DLL 2 IoCs

Processes:

79f8d7b9ac8178b6f9d7daafa17309bc.exe

pid process

1736 79f8d7b9ac8178b6f9d7daafa17309bc.exe
1736 79f8d7b9ac8178b6f9d7daafa17309bc.exe
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
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
T1542.003

Processes:

79f8d7b9ac8178b6f9d7daafa17309bc.exe

description ioc process

File opened for modification \??\PhysicalDrive0 79f8d7b9ac8178b6f9d7daafa17309bc.exe

pid	process
1736	79f8d7b9ac8178b6f9d7daafa17309bc.exe
1736	79f8d7b9ac8178b6f9d7daafa17309bc.exe

description	ioc	process
File opened for modification	\??\PhysicalDrive0	79f8d7b9ac8178b6f9d7daafa17309bc.exe

Drops file in Program Files directory 2 IoCs

Processes:

79f8d7b9ac8178b6f9d7daafa17309bc.exe

description	ioc	process
File created	C:\Program Files (x86)\LuDaShi\{19D4E76A-828E-45c2-AA7A-1042D2EE6F95}.tf	79f8d7b9ac8178b6f9d7daafa17309bc.exe
File created	C:\Program Files (x86)\LuDaShi\{E7C9F52A-E80E-42ad-99C1-B73896EB891A}.tmp\{34BE5744-E263-4851-94BD-7B6A072AC152}.tf	79f8d7b9ac8178b6f9d7daafa17309bc.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2968 1736 WerFault.exe 79f8d7b9ac8178b6f9d7daafa17309bc.exe

pid	pid_target	process	target process
2968	1736	WerFault.exe	79f8d7b9ac8178b6f9d7daafa17309bc.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

79f8d7b9ac8178b6f9d7daafa17309bc.exe

description	pid	process	target process
PID 1736 wrote to memory of 2968	1736	79f8d7b9ac8178b6f9d7daafa17309bc.exe	WerFault.exe
PID 1736 wrote to memory of 2968	1736	79f8d7b9ac8178b6f9d7daafa17309bc.exe	WerFault.exe
PID 1736 wrote to memory of 2968	1736	79f8d7b9ac8178b6f9d7daafa17309bc.exe	WerFault.exe
PID 1736 wrote to memory of 2968	1736	79f8d7b9ac8178b6f9d7daafa17309bc.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\79f8d7b9ac8178b6f9d7daafa17309bc.exe
"C:\Users\Admin\AppData\Local\Temp\79f8d7b9ac8178b6f9d7daafa17309bc.exe"
1⤵
- Loads dropped DLL
- Writes to the Master Boot Record (MBR)
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1736

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1736 -s 1004
2⤵
- Program crash
PID:2968

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\{1439F6D0-879F-46e3-A2B2-6C362A876801}.tmp\7z.dll
Filesize
1.1MB

MD5
2888126384d873cc49af32bbe34bb296

SHA1
fe74877bcaec93c7d67dab2ce8c86cfc38402d22

SHA256
aba19501a8033495664879e09e60e4788537d387cf038fa8769e5b178bccdcb4

SHA512
f283b721b27d85fbc7a4e1e91ab1683da0c3888f632873625c4c2b48caa170471aaa84e107230988f615d3f43e40a640607d6e6f641aed59788dee441801748a

Download Submit
\Users\Admin\AppData\Local\Temp\{8625D918-6D7B-49e2-A179-D7E51B0D6B43}.tmp\NetBridge.dll
Filesize
231KB

MD5
9d145902fb5b9a6da62ac85761434e31

SHA1
c817d77f59e3767d75cf5f5298d6b5711308f7e5

SHA256
98d795d55329b1057f4fd590468e648a8c34b620207fd9a0a6953f3e98d1ea43

SHA512
bbb3109bcd5ded909bfdaeb7f4f006fc5928a9bc501bad5ae8ba9805bc0d924a2c4da8bbd215480db936d663852abd9b0435fa241a40224a4cd93c4b7aff79a9

Download Submit
memory/1736-40-0x0000000000980000-0x0000000000981000-memory.dmp

Filesize
4KB

Download