596263884d5474c2d3bb01238718eb30ce2c8539c99f66fa26b92171c6786c26

Resubmissions

28-06-2024 11:25

240628-njn2paxalh 10

28-06-2024 11:22

240628-ngsbbswhlg 10

Analysis

max time kernel
72s
max time network
73s
platform
windows11-21h2_x64
resource
win11-20240508-en
resource tags

arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
submitted
28-06-2024 11:22

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General

Target

lab_samples/b3b3bb519dd34a933a0b9920fa905ecaa5ce32c34871a29b5823a5b0fd4d9fc7.exe
Size

659KB
MD5

b3dc48d13f7d541fa583bf964c0603bf
SHA1

1dbaa68adc0a592508f7ad715bfcdf79c17990d6
SHA256

b3b3bb519dd34a933a0b9920fa905ecaa5ce32c34871a29b5823a5b0fd4d9fc7
SHA512

193bda0656a9d1be54dc655d9af3224ddccb78fc26aa77618fba1e3c36005a0368a200960cc28facc280df667f51a26bbef62282bbf8837cc036a41bfb8525f4
SSDEEP

12288:JR2N+L3K6boxK6dSmiTwntcm3Kbjbgv8YXoNCMF6+yWiL4Wlsfppj4W:P8+L3UM6SIcsHj4N5F6+yW/W4XP

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

a2a2aa408cc23a822a0a8810ea804dbaa4bd21b23760a18a4712a4a0ec3c8eb6.exe

pid process

2160 a2a2aa408cc23a822a0a8810ea804dbaa4bd21b23760a18a4712a4a0ec3c8eb6.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2088 2160 WerFault.exe a2a2aa408cc23a822a0a8810ea804dbaa4bd21b23760a18a4712a4a0ec3c8eb6.exe
Modifies registry class 1 IoCs

Processes:

MiniSearchHost.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-1672260578-815027929-964132517-1000_Classes\Local Settings\MuiCache MiniSearchHost.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

MiniSearchHost.exe

pid process

1900 MiniSearchHost.exe

pid	process
2160	a2a2aa408cc23a822a0a8810ea804dbaa4bd21b23760a18a4712a4a0ec3c8eb6.exe

pid	pid_target	process	target process
2088	2160	WerFault.exe	a2a2aa408cc23a822a0a8810ea804dbaa4bd21b23760a18a4712a4a0ec3c8eb6.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1672260578-815027929-964132517-1000_Classes\Local Settings\MuiCache	MiniSearchHost.exe

pid	process
1900	MiniSearchHost.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

b3b3bb519dd34a933a0b9920fa905ecaa5ce32c34871a29b5823a5b0fd4d9fc7.exea2a2aa408cc23a822a0a8810ea804dbaa4bd21b23760a18a4712a4a0ec3c8eb6.exe

description	pid	process	target process
PID 4076 wrote to memory of 2160	4076	b3b3bb519dd34a933a0b9920fa905ecaa5ce32c34871a29b5823a5b0fd4d9fc7.exe	a2a2aa408cc23a822a0a8810ea804dbaa4bd21b23760a18a4712a4a0ec3c8eb6.exe
PID 4076 wrote to memory of 2160	4076	b3b3bb519dd34a933a0b9920fa905ecaa5ce32c34871a29b5823a5b0fd4d9fc7.exe	a2a2aa408cc23a822a0a8810ea804dbaa4bd21b23760a18a4712a4a0ec3c8eb6.exe
PID 4076 wrote to memory of 2160	4076	b3b3bb519dd34a933a0b9920fa905ecaa5ce32c34871a29b5823a5b0fd4d9fc7.exe	a2a2aa408cc23a822a0a8810ea804dbaa4bd21b23760a18a4712a4a0ec3c8eb6.exe
PID 2160 wrote to memory of 928	2160	a2a2aa408cc23a822a0a8810ea804dbaa4bd21b23760a18a4712a4a0ec3c8eb6.exe	svchost.exe
PID 2160 wrote to memory of 928	2160	a2a2aa408cc23a822a0a8810ea804dbaa4bd21b23760a18a4712a4a0ec3c8eb6.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\lab_samples\b3b3bb519dd34a933a0b9920fa905ecaa5ce32c34871a29b5823a5b0fd4d9fc7.exe
"C:\Users\Admin\AppData\Local\Temp\lab_samples\b3b3bb519dd34a933a0b9920fa905ecaa5ce32c34871a29b5823a5b0fd4d9fc7.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4076

C:\Users\Admin\AppData\Roaming\winapp\a2a2aa408cc23a822a0a8810ea804dbaa4bd21b23760a18a4712a4a0ec3c8eb6.exe
C:\Users\Admin\AppData\Roaming\winapp\a2a2aa408cc23a822a0a8810ea804dbaa4bd21b23760a18a4712a4a0ec3c8eb6.exe
2⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2160

C:\Windows\SYSTEM32\svchost.exe
svchost.exe -k netsvcs
3⤵
PID:928

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2160 -s 632
3⤵
- Program crash
PID:2088

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 2160 -ip 2160
1⤵
PID:1228

C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe
"C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe" -ServerName:MiniSearchUI.AppXj3y73at8fy1htwztzxs68sxx1v7cksp7.mca
1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
PID:1900

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Packages\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TempState\SearchHoverUnifiedTileModelCache.dat
Filesize
10KB

MD5
e9aa12ff0be6d995ed86f8cf88678158

SHA1
e5ee38fc2ebef0fcbc3059dee29b39f7daf21931

SHA256
f35cd8ef03ac924a59943c5dfffc31ab67a8b5aff272e9f47ff776aabc7ee561

SHA512
95a67acd2a4784b87d73910c1f1f590937c9d9b901e98448556a37eb8137ae5f458f1c673d65a46cf7d6b90bee5fe6b102ce3eeac9e819062cd9c5c2418bcbfc

Download Submit
C:\Users\Admin\AppData\Roaming\winapp\a2a2aa408cc23a822a0a8810ea804dbaa4bd21b23760a18a4712a4a0ec3c8eb6.exe
Filesize
659KB

MD5
b3dc48d13f7d541fa583bf964c0603bf

SHA1
1dbaa68adc0a592508f7ad715bfcdf79c17990d6

SHA256
b3b3bb519dd34a933a0b9920fa905ecaa5ce32c34871a29b5823a5b0fd4d9fc7

SHA512
193bda0656a9d1be54dc655d9af3224ddccb78fc26aa77618fba1e3c36005a0368a200960cc28facc280df667f51a26bbef62282bbf8837cc036a41bfb8525f4

Download Submit
memory/2160-9-0x00000000020A0000-0x00000000020A1000-memory.dmp

Filesize
4KB

Download
memory/2160-10-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/2160-11-0x0000000002450000-0x000000000248C000-memory.dmp

Filesize
240KB

Download
memory/2160-12-0x0000000010000000-0x0000000010007000-memory.dmp

Filesize
28KB

Download
memory/2160-17-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/4076-0-0x0000000002200000-0x0000000002201000-memory.dmp

Filesize
4KB

Download
memory/4076-1-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/4076-2-0x0000000002250000-0x000000000228C000-memory.dmp

Filesize
240KB

Download
memory/4076-4-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download