8837fa7ced44e3fca9bd4a4c65ed19224cd8bffb92435d11e3935f275c860cc9

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
05/09/2024, 00:35

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General

Target

8837fa7ced44e3fca9bd4a4c65ed19224cd8bffb92435d11e3935f275c860cc9.exe
Size

4.8MB
MD5

dfd160702e3a1f34dbe5a671885e5cc0
SHA1

ae0c00cf2978e134536e0c419fdc7acb3d4afafb
SHA256

8837fa7ced44e3fca9bd4a4c65ed19224cd8bffb92435d11e3935f275c860cc9
SHA512

1e51f4beb86591361c44fea208f8b297fa0c0bc56823cf9479fdbb6454c375fbd206400e105ce2ef2a7f8c3977aca54f7790069fa765a01de53ae8c334037e5a
SSDEEP

98304:IVeM4VwHuokyf28PGcx2HynIiprw0F80XZZ72:eAVwGkx2SnIe84Z72

Score

7^/10

bootkit discovery persistence

Malware Config

Signatures

Loads dropped DLL 2 IoCs

pid	Process
1792	8837fa7ced44e3fca9bd4a4c65ed19224cd8bffb92435d11e3935f275c860cc9.exe
1792	8837fa7ced44e3fca9bd4a4c65ed19224cd8bffb92435d11e3935f275c860cc9.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	8837fa7ced44e3fca9bd4a4c65ed19224cd8bffb92435d11e3935f275c860cc9.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\LuDaShi\{F1B8902F-FF22-479c-9322-D49485D2703C}.tf	8837fa7ced44e3fca9bd4a4c65ed19224cd8bffb92435d11e3935f275c860cc9.exe
File created	C:\Program Files (x86)\LuDaShi\{89EF82CD-7384-4717-8CAE-F7CE6428A513}.tmp\{4A93B3A0-5750-40a5-ADD3-9316E71CF442}.tf	8837fa7ced44e3fca9bd4a4c65ed19224cd8bffb92435d11e3935f275c860cc9.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2864	1792	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	8837fa7ced44e3fca9bd4a4c65ed19224cd8bffb92435d11e3935f275c860cc9.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1792 wrote to memory of 2864	1792	8837fa7ced44e3fca9bd4a4c65ed19224cd8bffb92435d11e3935f275c860cc9.exe	30
PID 1792 wrote to memory of 2864	1792	8837fa7ced44e3fca9bd4a4c65ed19224cd8bffb92435d11e3935f275c860cc9.exe	30
PID 1792 wrote to memory of 2864	1792	8837fa7ced44e3fca9bd4a4c65ed19224cd8bffb92435d11e3935f275c860cc9.exe	30
PID 1792 wrote to memory of 2864	1792	8837fa7ced44e3fca9bd4a4c65ed19224cd8bffb92435d11e3935f275c860cc9.exe	30

C:\Users\Admin\AppData\Local\Temp\8837fa7ced44e3fca9bd4a4c65ed19224cd8bffb92435d11e3935f275c860cc9.exe
"C:\Users\Admin\AppData\Local\Temp\8837fa7ced44e3fca9bd4a4c65ed19224cd8bffb92435d11e3935f275c860cc9.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:1792
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1792 -s 940
  2⤵
  - Program crash
  PID:2864

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\{B1BF9343-8BBE-4c58-9EE8-A69059FCB9B7}.tmp\NetBridge.dll

Filesize
231KB

MD5
9d145902fb5b9a6da62ac85761434e31

SHA1
c817d77f59e3767d75cf5f5298d6b5711308f7e5

SHA256
98d795d55329b1057f4fd590468e648a8c34b620207fd9a0a6953f3e98d1ea43

SHA512
bbb3109bcd5ded909bfdaeb7f4f006fc5928a9bc501bad5ae8ba9805bc0d924a2c4da8bbd215480db936d663852abd9b0435fa241a40224a4cd93c4b7aff79a9

Download Submit
\Users\Admin\AppData\Local\Temp\{1AFD309D-BC14-48d2-9452-9EC7F5972384}.tmp\7z.dll

Filesize
1.1MB

MD5
2888126384d873cc49af32bbe34bb296

SHA1
fe74877bcaec93c7d67dab2ce8c86cfc38402d22

SHA256
aba19501a8033495664879e09e60e4788537d387cf038fa8769e5b178bccdcb4

SHA512
f283b721b27d85fbc7a4e1e91ab1683da0c3888f632873625c4c2b48caa170471aaa84e107230988f615d3f43e40a640607d6e6f641aed59788dee441801748a

Download Submit
memory/1792-39-0x00000000002C0000-0x00000000002C1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads