b6e95e50e00c0a863ff11d9b409e4c31f41191c1dc8890d2ebbb7cf0fc7e9fd4

Analysis

max time kernel
122s
max time network
126s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
08/09/2024, 17:28

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General

Target

b6e95e50e00c0a863ff11d9b409e4c31f41191c1dc8890d2ebbb7cf0fc7e9fd4.exe
Size

4.8MB
MD5

75104ea6da35e6fcc41c33e0f16aed9d
SHA1

40e1db57074e3e6eef1fbed02d9f2dcd406fba6a
SHA256

b6e95e50e00c0a863ff11d9b409e4c31f41191c1dc8890d2ebbb7cf0fc7e9fd4
SHA512

3af0b1bb6d01b5f929b5707724d3d6ee66c23b349bcba81ff7fdd6372acbb89426b3886ee1de438ceb35662e6e2f0a1cf1236c993cbff22152797dfc5bd282b6
SSDEEP

98304:cVeM4VwHuokyfK8PGcx2HynIiprw0F80XZeGS:6AVw6kx2SnIe84eGS

Score

7^/10

bootkit discovery persistence

Malware Config

Signatures

Loads dropped DLL 2 IoCs

pid	Process
1652	b6e95e50e00c0a863ff11d9b409e4c31f41191c1dc8890d2ebbb7cf0fc7e9fd4.exe
1652	b6e95e50e00c0a863ff11d9b409e4c31f41191c1dc8890d2ebbb7cf0fc7e9fd4.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	b6e95e50e00c0a863ff11d9b409e4c31f41191c1dc8890d2ebbb7cf0fc7e9fd4.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\LuDaShi\{0DBF467C-2B8A-4e0c-9C1F-8E69D070AABB}.tf	b6e95e50e00c0a863ff11d9b409e4c31f41191c1dc8890d2ebbb7cf0fc7e9fd4.exe
File created	C:\Program Files (x86)\LuDaShi\{137729D0-BAAA-4528-95E7-4B840270B574}.tmp\{0A8C660E-C623-49a0-AF6F-86BDEF00630C}.tf	b6e95e50e00c0a863ff11d9b409e4c31f41191c1dc8890d2ebbb7cf0fc7e9fd4.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2992	1652	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	b6e95e50e00c0a863ff11d9b409e4c31f41191c1dc8890d2ebbb7cf0fc7e9fd4.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1652 wrote to memory of 2992	1652	b6e95e50e00c0a863ff11d9b409e4c31f41191c1dc8890d2ebbb7cf0fc7e9fd4.exe	30
PID 1652 wrote to memory of 2992	1652	b6e95e50e00c0a863ff11d9b409e4c31f41191c1dc8890d2ebbb7cf0fc7e9fd4.exe	30
PID 1652 wrote to memory of 2992	1652	b6e95e50e00c0a863ff11d9b409e4c31f41191c1dc8890d2ebbb7cf0fc7e9fd4.exe	30
PID 1652 wrote to memory of 2992	1652	b6e95e50e00c0a863ff11d9b409e4c31f41191c1dc8890d2ebbb7cf0fc7e9fd4.exe	30

C:\Users\Admin\AppData\Local\Temp\b6e95e50e00c0a863ff11d9b409e4c31f41191c1dc8890d2ebbb7cf0fc7e9fd4.exe
"C:\Users\Admin\AppData\Local\Temp\b6e95e50e00c0a863ff11d9b409e4c31f41191c1dc8890d2ebbb7cf0fc7e9fd4.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:1652
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1652 -s 984
  2⤵
  - Program crash
  PID:2992

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
a56aaf8c77e25f733206484e65147c2d

SHA1
50f894148c4edc1470e38493d48142523cf375ac

SHA256
58dc7a6159d81ebeacc510c5d95b94c864bffa1220e085a7a390723315323a78

SHA512
a43c7d5960d7d45ab7cc0a7a48b5c3364a13748166e979f702c81929101b1d2abe434e41cc3c9b5af572eeaa78a84b3bbba58e37c4d409985a74993c7324408b

Download Submit
\Users\Admin\AppData\Local\Temp\{0B2D9879-7843-4eb6-AB7D-98EC3D08981E}.tmp\NetBridge.dll

Filesize
231KB

MD5
9d145902fb5b9a6da62ac85761434e31

SHA1
c817d77f59e3767d75cf5f5298d6b5711308f7e5

SHA256
98d795d55329b1057f4fd590468e648a8c34b620207fd9a0a6953f3e98d1ea43

SHA512
bbb3109bcd5ded909bfdaeb7f4f006fc5928a9bc501bad5ae8ba9805bc0d924a2c4da8bbd215480db936d663852abd9b0435fa241a40224a4cd93c4b7aff79a9

Download Submit
\Users\Admin\AppData\Local\Temp\{7BCABAE3-8A27-4953-BFE2-C564EBECCDDA}.tmp\7z.dll

Filesize
1.1MB

MD5
2888126384d873cc49af32bbe34bb296

SHA1
fe74877bcaec93c7d67dab2ce8c86cfc38402d22

SHA256
aba19501a8033495664879e09e60e4788537d387cf038fa8769e5b178bccdcb4

SHA512
f283b721b27d85fbc7a4e1e91ab1683da0c3888f632873625c4c2b48caa170471aaa84e107230988f615d3f43e40a640607d6e6f641aed59788dee441801748a

Download Submit
memory/1652-39-0x0000000000A00000-0x0000000000A01000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads