ca2f59187ebde13da6b1389c3f60170f943c177f24b99f11dd5a2bb203b39657

Analysis

max time kernel
106s
max time network
19s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
04/09/2024, 10:15

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General

Target

ca2f59187ebde13da6b1389c3f60170f943c177f24b99f11dd5a2bb203b39657.exe
Size

4.8MB
MD5

ba848e797f7ab9b5ffdb85f7e5dcbffd
SHA1

818ef9b4855ef49990a6f77ec67621e6be05202b
SHA256

ca2f59187ebde13da6b1389c3f60170f943c177f24b99f11dd5a2bb203b39657
SHA512

39a4a59731379f6b6300d39d17904070476a279a47f54ce774013d9563462714bc66d9ee1563f7022bb1a9459ad0605a3c3f973cb8ef04b9828811ed2a3b5cdf
SSDEEP

98304:cVeM4VwHuokyfK8PGcx2HynIiprw0F80XZeGF:6AVw6kx2SnIe84eGF

Score

7^/10

bootkit discovery persistence

Malware Config

Signatures

Loads dropped DLL 2 IoCs

pid	Process
1848	ca2f59187ebde13da6b1389c3f60170f943c177f24b99f11dd5a2bb203b39657.exe
1848	ca2f59187ebde13da6b1389c3f60170f943c177f24b99f11dd5a2bb203b39657.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	ca2f59187ebde13da6b1389c3f60170f943c177f24b99f11dd5a2bb203b39657.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\LuDaShi\{47816FEC-4353-4643-8853-4B278D1D51C3}.tf	ca2f59187ebde13da6b1389c3f60170f943c177f24b99f11dd5a2bb203b39657.exe
File created	C:\Program Files (x86)\LuDaShi\{AEB10F19-673C-4452-AB67-D79F97854DD1}.tmp\{818933D1-9D0E-4474-945F-52A4A795CF9C}.tf	ca2f59187ebde13da6b1389c3f60170f943c177f24b99f11dd5a2bb203b39657.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2692	1848	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	ca2f59187ebde13da6b1389c3f60170f943c177f24b99f11dd5a2bb203b39657.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1848 wrote to memory of 2692	1848	ca2f59187ebde13da6b1389c3f60170f943c177f24b99f11dd5a2bb203b39657.exe	30
PID 1848 wrote to memory of 2692	1848	ca2f59187ebde13da6b1389c3f60170f943c177f24b99f11dd5a2bb203b39657.exe	30
PID 1848 wrote to memory of 2692	1848	ca2f59187ebde13da6b1389c3f60170f943c177f24b99f11dd5a2bb203b39657.exe	30
PID 1848 wrote to memory of 2692	1848	ca2f59187ebde13da6b1389c3f60170f943c177f24b99f11dd5a2bb203b39657.exe	30

C:\Users\Admin\AppData\Local\Temp\ca2f59187ebde13da6b1389c3f60170f943c177f24b99f11dd5a2bb203b39657.exe
"C:\Users\Admin\AppData\Local\Temp\ca2f59187ebde13da6b1389c3f60170f943c177f24b99f11dd5a2bb203b39657.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:1848
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1848 -s 760
  2⤵
  - Program crash
  PID:2692

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

\Users\Admin\AppData\Local\Temp\{30B2FC9C-E74E-437d-85DB-2C3EE8E405CF}.tmp\NetBridge.dll

Filesize
231KB

MD5
9d145902fb5b9a6da62ac85761434e31

SHA1
c817d77f59e3767d75cf5f5298d6b5711308f7e5

SHA256
98d795d55329b1057f4fd590468e648a8c34b620207fd9a0a6953f3e98d1ea43

SHA512
bbb3109bcd5ded909bfdaeb7f4f006fc5928a9bc501bad5ae8ba9805bc0d924a2c4da8bbd215480db936d663852abd9b0435fa241a40224a4cd93c4b7aff79a9

Download Submit
\Users\Admin\AppData\Local\Temp\{A59308B1-253A-40d2-AA8B-1481236093C6}.tmp\7z.dll

Filesize
1.1MB

MD5
2888126384d873cc49af32bbe34bb296

SHA1
fe74877bcaec93c7d67dab2ce8c86cfc38402d22

SHA256
aba19501a8033495664879e09e60e4788537d387cf038fa8769e5b178bccdcb4

SHA512
f283b721b27d85fbc7a4e1e91ab1683da0c3888f632873625c4c2b48caa170471aaa84e107230988f615d3f43e40a640607d6e6f641aed59788dee441801748a

Download Submit
memory/1848-39-0x0000000000A80000-0x0000000000A81000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads