7981b92240f5a2f4b53a300592abf24a7b71b7759f273fd7ca43093cf64fbe71

Analysis

max time kernel
117s
max time network
119s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
01-09-2024 18:21

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General

Target

7981b92240f5a2f4b53a300592abf24a7b71b7759f273fd7ca43093cf64fbe71.exe
Size

4.8MB
MD5

31ebd85b9d51ffe7ac3027f7621173af
SHA1

048e1f1031ee5adcc43692fb478949f00ba986cf
SHA256

7981b92240f5a2f4b53a300592abf24a7b71b7759f273fd7ca43093cf64fbe71
SHA512

d1e4472b0632cdcdd6e8619b7347296db735512f1a25ae2c60dfb8ff5a5b89133b242b6c9901081d2d5316886d132f8b9d3b0a0ad24319a5ea29f6b9b9d6d92b
SSDEEP

98304:cVeM4VwHuokyfK8PGcx2HynIiprw0F80XZeGH:6AVw6kx2SnIe84eGH

Score

7^/10

bootkit discovery persistence

Malware Config

Signatures

Loads dropped DLL 2 IoCs

pid	Process
2064	7981b92240f5a2f4b53a300592abf24a7b71b7759f273fd7ca43093cf64fbe71.exe
2064	7981b92240f5a2f4b53a300592abf24a7b71b7759f273fd7ca43093cf64fbe71.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

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	7981b92240f5a2f4b53a300592abf24a7b71b7759f273fd7ca43093cf64fbe71.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\LuDaShi\{DA468D21-D9D1-49e3-9771-C01298BE319F}.tf	7981b92240f5a2f4b53a300592abf24a7b71b7759f273fd7ca43093cf64fbe71.exe
File created	C:\Program Files (x86)\LuDaShi\{B88C67C9-A85F-423a-A791-214C5131FC42}.tmp\{3CB07D70-BAE2-4a5f-B415-7EB6FC2F073B}.tf	7981b92240f5a2f4b53a300592abf24a7b71b7759f273fd7ca43093cf64fbe71.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2236	2064	WerFault.exe	29

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7981b92240f5a2f4b53a300592abf24a7b71b7759f273fd7ca43093cf64fbe71.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2064 wrote to memory of 2236	2064	7981b92240f5a2f4b53a300592abf24a7b71b7759f273fd7ca43093cf64fbe71.exe	30
PID 2064 wrote to memory of 2236	2064	7981b92240f5a2f4b53a300592abf24a7b71b7759f273fd7ca43093cf64fbe71.exe	30
PID 2064 wrote to memory of 2236	2064	7981b92240f5a2f4b53a300592abf24a7b71b7759f273fd7ca43093cf64fbe71.exe	30
PID 2064 wrote to memory of 2236	2064	7981b92240f5a2f4b53a300592abf24a7b71b7759f273fd7ca43093cf64fbe71.exe	30

C:\Users\Admin\AppData\Local\Temp\7981b92240f5a2f4b53a300592abf24a7b71b7759f273fd7ca43093cf64fbe71.exe
"C:\Users\Admin\AppData\Local\Temp\7981b92240f5a2f4b53a300592abf24a7b71b7759f273fd7ca43093cf64fbe71.exe"
1⤵
- Loads dropped DLL
- Writes to the Master Boot Record (MBR)
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2064
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2064 -s 860
  2⤵
  - Program crash
  PID:2236

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\lds_setup.log

Filesize
978B

MD5
da4be3b6c36e7c295c95a71d3a732360

SHA1
57b034e5c16463c2fe7028580043fd3c9c264506

SHA256
6921b4a94dacf1c7ec4d480cd3b2b96c6684522695d279ee67327c4f62753a00

SHA512
f9a43baf4e9638e9f2d6b968bff2829795bbd1bb1ef13ef2958687a2b6c2d4bb209955726a38eaaef15be35cd0dcfd68d3760556f1ed246228c394a0685d709c

Download Submit
C:\Users\Admin\AppData\Local\Temp\{A1388208-4684-420b-A2A6-1DC5A41267D8}.tmp\NetBridge.dll

Filesize
231KB

MD5
9d145902fb5b9a6da62ac85761434e31

SHA1
c817d77f59e3767d75cf5f5298d6b5711308f7e5

SHA256
98d795d55329b1057f4fd590468e648a8c34b620207fd9a0a6953f3e98d1ea43

SHA512
bbb3109bcd5ded909bfdaeb7f4f006fc5928a9bc501bad5ae8ba9805bc0d924a2c4da8bbd215480db936d663852abd9b0435fa241a40224a4cd93c4b7aff79a9

Download Submit
\Users\Admin\AppData\Local\Temp\{20427B1A-43BB-41a4-8662-2D103C7F1DBC}.tmp\7z.dll

Filesize
1.1MB

MD5
2888126384d873cc49af32bbe34bb296

SHA1
fe74877bcaec93c7d67dab2ce8c86cfc38402d22

SHA256
aba19501a8033495664879e09e60e4788537d387cf038fa8769e5b178bccdcb4

SHA512
f283b721b27d85fbc7a4e1e91ab1683da0c3888f632873625c4c2b48caa170471aaa84e107230988f615d3f43e40a640607d6e6f641aed59788dee441801748a

Download Submit
memory/2064-39-0x0000000000530000-0x0000000000531000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads