46cb0bfebca7f8171307b390923ee779eafa2a2e8d000f7ea5e64653eadede5e

Analysis

max time kernel
120s
max time network
124s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
01-07-2024 04:09

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General

Target

f42fa144980d61c6f1832c8aa8c0337a.exe
Size

42.4MB
MD5

f42fa144980d61c6f1832c8aa8c0337a
SHA1

c96f32a3e446d6ce87fafc01366cdd2c819528e7
SHA256

46cb0bfebca7f8171307b390923ee779eafa2a2e8d000f7ea5e64653eadede5e
SHA512

ee7f36eee7d07057e6b9e2576adef4ce6e0dba10231c877c09293ac5c5be35423c95a2c232e880c9733fff7576d4c039a257099b819d5d9d2adc5086ff44a30a
SSDEEP

786432:9wYnIe84d7m8/Mw5CaXv2S3IPlv5OqlICX1atGLJcez+yzqFqikJaaZRTdcHj:9wYn7dX/uyv28Id5PlIQk0qeyOq8DrRo

Score

7^/10

bootkit discovery persistence

Malware Config

Signatures

Loads dropped DLL 2 IoCs

Processes:

f42fa144980d61c6f1832c8aa8c0337a.exe

pid process

2880 f42fa144980d61c6f1832c8aa8c0337a.exe
2880 f42fa144980d61c6f1832c8aa8c0337a.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:

f42fa144980d61c6f1832c8aa8c0337a.exe

description ioc process

File opened for modification \??\PhysicalDrive0 f42fa144980d61c6f1832c8aa8c0337a.exe

pid	process
2880	f42fa144980d61c6f1832c8aa8c0337a.exe
2880	f42fa144980d61c6f1832c8aa8c0337a.exe

description	ioc	process
File opened for modification	\??\PhysicalDrive0	f42fa144980d61c6f1832c8aa8c0337a.exe

Drops file in Program Files directory 2 IoCs

Processes:

f42fa144980d61c6f1832c8aa8c0337a.exe

description	ioc	process
File created	C:\Program Files (x86)\LuDaShi\{022CBB75-D168-40a6-AD50-DDC2AD2787A2}.tf	f42fa144980d61c6f1832c8aa8c0337a.exe
File created	C:\Program Files (x86)\LuDaShi\{F7F2C52B-0F7D-4d52-902C-58CDF3EC1004}.tmp\{7E0CA564-3B0B-457e-97D4-72E615E61F7B}.tf	f42fa144980d61c6f1832c8aa8c0337a.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2748 2880 WerFault.exe f42fa144980d61c6f1832c8aa8c0337a.exe

pid	pid_target	process	target process
2748	2880	WerFault.exe	f42fa144980d61c6f1832c8aa8c0337a.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

f42fa144980d61c6f1832c8aa8c0337a.exe

description	pid	process	target process
PID 2880 wrote to memory of 2748	2880	f42fa144980d61c6f1832c8aa8c0337a.exe	WerFault.exe
PID 2880 wrote to memory of 2748	2880	f42fa144980d61c6f1832c8aa8c0337a.exe	WerFault.exe
PID 2880 wrote to memory of 2748	2880	f42fa144980d61c6f1832c8aa8c0337a.exe	WerFault.exe
PID 2880 wrote to memory of 2748	2880	f42fa144980d61c6f1832c8aa8c0337a.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\f42fa144980d61c6f1832c8aa8c0337a.exe
"C:\Users\Admin\AppData\Local\Temp\f42fa144980d61c6f1832c8aa8c0337a.exe"
1⤵
- Loads dropped DLL
- Writes to the Master Boot Record (MBR)
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:2880

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2880 -s 988
2⤵
- Program crash
PID:2748

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

C:\Users\Admin\AppData\Local\Temp\lds_setup.log
Filesize
1014B

MD5
3d59e283eb7d2122cd7c93059c35262a

SHA1
69eb2c3726c7c3979a56345003adf01a5dcaae5d

SHA256
cf19042981a61b62103253be179786bc72c0df767ff07c0ce4ae6364dffd56b6

SHA512
94e4e6f678868e68433ccb526fbfcd0a90477cde17c066021427f5d9b80124dc753096d18e3feca8a81aff36312c36127af0da188b95a30a7cbf32313f07f493

Download Submit
\Users\Admin\AppData\Local\Temp\{381024D3-4FC7-4f32-A773-6761A613B04C}.tmp\NetBridge.dll
Filesize
231KB

MD5
9d145902fb5b9a6da62ac85761434e31

SHA1
c817d77f59e3767d75cf5f5298d6b5711308f7e5

SHA256
98d795d55329b1057f4fd590468e648a8c34b620207fd9a0a6953f3e98d1ea43

SHA512
bbb3109bcd5ded909bfdaeb7f4f006fc5928a9bc501bad5ae8ba9805bc0d924a2c4da8bbd215480db936d663852abd9b0435fa241a40224a4cd93c4b7aff79a9

Download Submit
\Users\Admin\AppData\Local\Temp\{61FF7A75-7089-461f-840A-F15DA15AA247}.tmp\7z.dll
Filesize
1.1MB

MD5
2888126384d873cc49af32bbe34bb296

SHA1
fe74877bcaec93c7d67dab2ce8c86cfc38402d22

SHA256
aba19501a8033495664879e09e60e4788537d387cf038fa8769e5b178bccdcb4

SHA512
f283b721b27d85fbc7a4e1e91ab1683da0c3888f632873625c4c2b48caa170471aaa84e107230988f615d3f43e40a640607d6e6f641aed59788dee441801748a

Download Submit
memory/2880-40-0x00000000006D0000-0x00000000006D1000-memory.dmp

Filesize
4KB

Download