hxxps://nezur[.]io/Nezur_External[.]zip

Analysis

max time kernel
49s
max time network
49s
platform
windows11-21h2_x64
resource
win11-20240802-en
resource tags

arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
submitted
06/08/2024, 18:29

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General

Target

https://nezur.io/Nezur_External.zip

Score

3^/10

discovery

Malware Config

Signatures

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	msedge.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer	msedge.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName	msedge.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1735401866-3802634615-1355934272-1000_Classes\Local Settings	msedge.exe

NTFS ADS 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Downloads\Nezur_External.zip:Zone.Identifier	msedge.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
5380	msedge.exe
5380	msedge.exe
2988	msedge.exe
2988	msedge.exe
4952	identity_helper.exe
4952	identity_helper.exe
1612	msedge.exe
1612	msedge.exe
3864	msedge.exe
3864	msedge.exe

Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 7 IoCs

pid	Process
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe

Suspicious use of FindShellTrayWindow 37 IoCs

pid	Process
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe

Suspicious use of SendNotifyMessage 12 IoCs

pid	Process
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe
2988	msedge.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2988 wrote to memory of 6092	2988	msedge.exe	80
PID 2988 wrote to memory of 6092	2988	msedge.exe	80
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 3156	2988	msedge.exe	81
PID 2988 wrote to memory of 5380	2988	msedge.exe	82
PID 2988 wrote to memory of 5380	2988	msedge.exe	82
PID 2988 wrote to memory of 5440	2988	msedge.exe	83
PID 2988 wrote to memory of 5440	2988	msedge.exe	83
PID 2988 wrote to memory of 5440	2988	msedge.exe	83
PID 2988 wrote to memory of 5440	2988	msedge.exe	83
PID 2988 wrote to memory of 5440	2988	msedge.exe	83
PID 2988 wrote to memory of 5440	2988	msedge.exe	83
PID 2988 wrote to memory of 5440	2988	msedge.exe	83
PID 2988 wrote to memory of 5440	2988	msedge.exe	83
PID 2988 wrote to memory of 5440	2988	msedge.exe	83
PID 2988 wrote to memory of 5440	2988	msedge.exe	83
PID 2988 wrote to memory of 5440	2988	msedge.exe	83
PID 2988 wrote to memory of 5440	2988	msedge.exe	83
PID 2988 wrote to memory of 5440	2988	msedge.exe	83
PID 2988 wrote to memory of 5440	2988	msedge.exe	83
PID 2988 wrote to memory of 5440	2988	msedge.exe	83
PID 2988 wrote to memory of 5440	2988	msedge.exe	83
PID 2988 wrote to memory of 5440	2988	msedge.exe	83
PID 2988 wrote to memory of 5440	2988	msedge.exe	83
PID 2988 wrote to memory of 5440	2988	msedge.exe	83
PID 2988 wrote to memory of 5440	2988	msedge.exe	83

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument https://nezur.io/Nezur_External.zip
1⤵
- Enumerates system info in registry
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2988
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=90.0.4430.212 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=90.0.818.66 --initial-client-data=0x100,0x104,0x108,0xdc,0x10c,0x7ffb422a3cb8,0x7ffb422a3cc8,0x7ffb422a3cd8
  2⤵
  PID:6092
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=1936,11310165000669402372,13296044762498293566,131072 --gpu-preferences=SAAAAAAAAADgAAAwAAAAAAAAAAAAAAAAAABgAAAAAAAoAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAB4AAAAAAAAAHgAAAAAAAAAKAAAAAQAAAAgAAAAAAAAACgAAAAAAAAAMAAAAAAAAAA4AAAAAAAAABAAAAAAAAAAAAAAAAUAAAAQAAAAAAAAAAAAAAAGAAAAEAAAAAAAAAABAAAABQAAABAAAAAAAAAAAQAAAAYAAAAIAAAAAAAAAAgAAAAAAAAA --mojo-platform-channel-handle=1852 /prefetch:2
  2⤵
  PID:3156
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --field-trial-handle=1936,11310165000669402372,13296044762498293566,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2300 /prefetch:3
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:5380
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --field-trial-handle=1936,11310165000669402372,13296044762498293566,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2680 /prefetch:8
  2⤵
  PID:5440
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1936,11310165000669402372,13296044762498293566,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3232 /prefetch:1
  2⤵
  PID:4044
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1936,11310165000669402372,13296044762498293566,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3244 /prefetch:1
  2⤵
  PID:2548
- C:\Program Files (x86)\Microsoft\Edge\Application\90.0.818.66\identity_helper.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\90.0.818.66\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=1936,11310165000669402372,13296044762498293566,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5196 /prefetch:8
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:4952
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1936,11310165000669402372,13296044762498293566,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=9 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3960 /prefetch:1
  2⤵
  PID:1168
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=quarantine.mojom.Quarantine --field-trial-handle=1936,11310165000669402372,13296044762498293566,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5404 /prefetch:8
  2⤵
  - NTFS ADS
  - Suspicious behavior: EnumeratesProcesses
  PID:1612
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --field-trial-handle=1936,11310165000669402372,13296044762498293566,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5704 /prefetch:8
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:3864
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1936,11310165000669402372,13296044762498293566,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=12 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5452 /prefetch:1
  2⤵
  PID:4764
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1936,11310165000669402372,13296044762498293566,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=13 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5728 /prefetch:1
  2⤵
  PID:1216
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1936,11310165000669402372,13296044762498293566,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=14 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4928 /prefetch:1
  2⤵
  PID:2380
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1936,11310165000669402372,13296044762498293566,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=15 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5344 /prefetch:1
  2⤵
  PID:3108

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:5536

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:1652

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:5212

C:\Users\Admin\AppData\Local\Temp\Temp1_Nezur_External.zip\Nezur.exe
"C:\Users\Admin\AppData\Local\Temp\Temp1_Nezur_External.zip\Nezur.exe"
1⤵
PID:1784

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Browser Information Discovery

T1217

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat

Filesize
152B

MD5
9828ffacf3deee7f4c1300366ec22fab

SHA1
9aff54b57502b0fc2be1b0b4b3380256fb785602

SHA256
a3d21f0fb6563a5c9d0f7a6e9c125ec3faaa86ff43f37cb85a8778abc87950f7

SHA512
2e73ea4d2fcd7c8d52487816110f5f4a808ed636ae87dd119702d1cd1ae315cbb25c8094a9dddf18f07472b4deaed3e7e26c9b499334b26bdb70d4fa7f84168d

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat

Filesize
152B

MD5
6fdbe80e9fe20761b59e8f32398f4b14

SHA1
049b1f0c6fc4e93a4ba6b3c992f1d6cecf3ada1f

SHA256
b7f0d9ece2307bdc4f05a2d814c947451b007067ff8af977f77f06c3d5706942

SHA512
cf25c7fd0d6eccc46e7b58949c16d17ebeefb7edd6c76aa62f7ab5da52d1c6fc88bde620be40396d336789bd0d62b2162209a947d7ab69389e8c03682e880234

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Cache\f_000001

Filesize
12.2MB

MD5
115a3f77f569daaa14b892f8a649d5fd

SHA1
dbf0bb9f3e92abb356000a278aeeac82b1b3248d

SHA256
c69651cd40aeb5333614034c5aa6deb3f0af5360a19a6890091bf3058c6600cc

SHA512
0de2cae09664414b5fd083786ddfbd4babc340327a6d9d19983999e51bd8f168e4e9c3a184637a6853a22de5cbf6dce70a50d5486a526c8e36e9f1900a746d5c

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

Filesize
5KB

MD5
5a4087e7435cf183ca8b3b316aaf78ed

SHA1
6619200769f38f766656e2386a525ee44c1070bc

SHA256
05797dde12eecdb7494a7d583767cac92a8dfb145cba1b589bc43066eca9f17d

SHA512
aa4cde28307798b645884ef04e3f3d36f881ccd7c86b058660fed7d08a9143f1fd8ad58e7632f1414bb0deac586ea937d0cc5bf91f53a0add8cc04a806a4574a

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

Filesize
5KB

MD5
0a1517b0965bb86daba0f19060bd7b2a

SHA1
88b61be344c8c70edf1f3fa87765b8c3ec8e75fa

SHA256
564ae396bfe648eb5b06fe1a4f68fe614a0de5e9604c1d5f3792caa357134731

SHA512
564bb3da1dd69f9e7bc98473a81794559164248e3959a1e700c2c3ec7815e40099ff90096cd2f3a03a3859449ce1ac0eace9007075a16610782d138a3422e1a7

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\data_reduction_proxy_leveldb\CURRENT

Filesize
16B

MD5
46295cac801e5d4857d09837238a6394

SHA1
44e0fa1b517dbf802b18faf0785eeea6ac51594b

SHA256
0f1bad70c7bd1e0a69562853ec529355462fcd0423263a3d39d6d0d70b780443

SHA512
8969402593f927350e2ceb4b5bc2a277f3754697c1961e3d6237da322257fbab42909e1a742e22223447f3a4805f8d8ef525432a7c3515a549e984d3eff72b23

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\data_reduction_proxy_leveldb\CURRENT

Filesize
16B

MD5
206702161f94c5cd39fadd03f4014d98

SHA1
bd8bfc144fb5326d21bd1531523d9fb50e1b600a

SHA256
1005a525006f148c86efcbfb36c6eac091b311532448010f70f7de9a68007167

SHA512
0af09f26941b11991c750d1a2b525c39a8970900e98cba96fd1b55dbf93fee79e18b8aab258f48b4f7bda40d059629bc7770d84371235cdb1352a4f17f80e145

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State

Filesize
11KB

MD5
f25b6a91fa4926b36c71a7dcc6c51330

SHA1
270950fa6b275bdfaf4db48fed4bdd5ed4eb2cc8

SHA256
16f42a0ccc3d7b233cda5ec56e32e506026d6d826ce1ae0723bbb21748f6f6d2

SHA512
051537b91504d441f6130505a792302d5432def792bc58db32b5546b06850af43da540081959f87fbe3b3e16d89638d9951d624669aa01ddf1df40d676d63b7a

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State

Filesize
11KB

MD5
4f7d4480699b97c2ed396eddb51043aa

SHA1
852f30553fd8375057b99b145a98fa0738dde694

SHA256
3a9236f36c6fd10c519e2b87b0b169ca5d9b291e374ea9620d356551ce71489b

SHA512
fe041581e96986aa64447a8d50f3f37e34712a982f730b677483120ffa46c7e646fa4295ef9dd44a113d4070beb7ddcb7afa0496b213ee1e389b04098218d318

Download Submit
C:\Users\Admin\Downloads\Nezur_External.zip:Zone.Identifier

Filesize
26B

MD5
fbccf14d504b7b2dbcb5a5bda75bd93b

SHA1
d59fc84cdd5217c6cf74785703655f78da6b582b

SHA256
eacd09517ce90d34ba562171d15ac40d302f0e691b439f91be1b6406e25f5913

SHA512
aa1d2b1ea3c9de3ccadb319d4e3e3276a2f27dd1a5244fe72de2b6f94083dddc762480482c5c2e53f803cd9e3973ddefc68966f974e124307b5043e654443b98

Download Submit