ac7eaf14aa053f5473e55ed61bc0fbb1be337c4490f0e40daa00c823b9b17946

Analysis

max time kernel
118s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
12-09-2024 23:52

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General

Target

ac7eaf14aa053f5473e55ed61bc0fbb1be337c4490f0e40daa00c823b9b17946.exe
Size

4.8MB
MD5

77b47e301875892bdebbdabd26fff776
SHA1

774307a3048d162798d7807c6f315360742a8ad5
SHA256

ac7eaf14aa053f5473e55ed61bc0fbb1be337c4490f0e40daa00c823b9b17946
SHA512

4a32554595a12bb291ab859e5a95a706f519ab145f007c7d1311a6875ef1c766e4900ef62fb22c173bb0cd9da4a61f066c8c59e812ee163f2dc24ed77dcbfedf
SSDEEP

98304:AVeM4VwHuokyfn8PGcx2HynIiprw0F80XZrL2i:mAVw3kx2SnIe84X2i

Score

7^/10

bootkit discovery persistence

Malware Config

Signatures

Loads dropped DLL 2 IoCs

pid	Process
1860	ac7eaf14aa053f5473e55ed61bc0fbb1be337c4490f0e40daa00c823b9b17946.exe
1860	ac7eaf14aa053f5473e55ed61bc0fbb1be337c4490f0e40daa00c823b9b17946.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	ac7eaf14aa053f5473e55ed61bc0fbb1be337c4490f0e40daa00c823b9b17946.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\LuDaShi\{AB46D4E4-9AA0-4123-9692-C0A9E889C456}.tf	ac7eaf14aa053f5473e55ed61bc0fbb1be337c4490f0e40daa00c823b9b17946.exe
File created	C:\Program Files (x86)\LuDaShi\{437A56FD-FB9F-4812-B9D9-1F05C01E88D2}.tmp\{28796A3D-93CE-4a10-910B-1E4720BA081E}.tf	ac7eaf14aa053f5473e55ed61bc0fbb1be337c4490f0e40daa00c823b9b17946.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2728	1860	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	ac7eaf14aa053f5473e55ed61bc0fbb1be337c4490f0e40daa00c823b9b17946.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1860 wrote to memory of 2728	1860	ac7eaf14aa053f5473e55ed61bc0fbb1be337c4490f0e40daa00c823b9b17946.exe	30
PID 1860 wrote to memory of 2728	1860	ac7eaf14aa053f5473e55ed61bc0fbb1be337c4490f0e40daa00c823b9b17946.exe	30
PID 1860 wrote to memory of 2728	1860	ac7eaf14aa053f5473e55ed61bc0fbb1be337c4490f0e40daa00c823b9b17946.exe	30
PID 1860 wrote to memory of 2728	1860	ac7eaf14aa053f5473e55ed61bc0fbb1be337c4490f0e40daa00c823b9b17946.exe	30

C:\Users\Admin\AppData\Local\Temp\ac7eaf14aa053f5473e55ed61bc0fbb1be337c4490f0e40daa00c823b9b17946.exe
"C:\Users\Admin\AppData\Local\Temp\ac7eaf14aa053f5473e55ed61bc0fbb1be337c4490f0e40daa00c823b9b17946.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:1860
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1860 -s 836
  2⤵
  - Program crash
  PID:2728

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
912B

MD5
86920332b7bb5b26075dd5be8554a69c

SHA1
0dfc50d047838c8b359d348895cb8006bb07c367

SHA256
1670004ac3334cf018bbb913e8725fad9ad2f9dfa95f1b831ac80509516d8c2c

SHA512
0a4aec70c1a56d0a3ea5f8ef83a2d8f9d57dfa165399e42c3d6c104d69cf5849faae25f8f9bdb3781350270dbebb42ca98c54313baaf02e2ca0d654a8c39d3a0

Download Submit
\Users\Admin\AppData\Local\Temp\{6684A065-06D9-46bc-8405-2DCB0814B7B0}.tmp\7z.dll

Filesize
1.1MB

MD5
2888126384d873cc49af32bbe34bb296

SHA1
fe74877bcaec93c7d67dab2ce8c86cfc38402d22

SHA256
aba19501a8033495664879e09e60e4788537d387cf038fa8769e5b178bccdcb4

SHA512
f283b721b27d85fbc7a4e1e91ab1683da0c3888f632873625c4c2b48caa170471aaa84e107230988f615d3f43e40a640607d6e6f641aed59788dee441801748a

Download Submit
\Users\Admin\AppData\Local\Temp\{82E85857-5B53-4bd5-BDE9-3B24710C8EFE}.tmp\NetBridge.dll

Filesize
231KB

MD5
9d145902fb5b9a6da62ac85761434e31

SHA1
c817d77f59e3767d75cf5f5298d6b5711308f7e5

SHA256
98d795d55329b1057f4fd590468e648a8c34b620207fd9a0a6953f3e98d1ea43

SHA512
bbb3109bcd5ded909bfdaeb7f4f006fc5928a9bc501bad5ae8ba9805bc0d924a2c4da8bbd215480db936d663852abd9b0435fa241a40224a4cd93c4b7aff79a9

Download Submit
memory/1860-39-0x00000000026B0000-0x00000000026B1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads