b78d33ff1d9181a618e3403beda0aec5dbdd1fd3a430216e75912c317a84ce03

Analysis

max time kernel
120s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21-11-2024 09:12

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General

Target

Nexus/Bootstrapper.exe
Size

8.3MB
MD5

4c0a2aaf52a61c79953070adf85c810d
SHA1

e30c5f2398b3129789feee60134d79994a77fa75
SHA256

304ed8a95905a18665c4017e1216cc4bafeae5461a998c23b8301e6c2c410d8f
SHA512

3d078a456f697430e8226cbcc5dd9741b1275e86c978fa8e21e1e070aaddda0865e2e4170e2e13f0d3bad9b9e30ad91ebb8690ee568c3e3a20c3eefb76e97525
SSDEEP

196608:cVuYLwfI9jUCzi4H1qSiXLGVi7DMgpZASEyQ0VMwICEc/je:LIHziK1piXLGVE4UrS0VJC

Score

7^/10

upx

Malware Config

Signatures

Loads dropped DLL 7 IoCs

Processes:

Bootstrapper.exe

pid	process
2732	Bootstrapper.exe
2732	Bootstrapper.exe
2732	Bootstrapper.exe
2732	Bootstrapper.exe
2732	Bootstrapper.exe
2732	Bootstrapper.exe
2732	Bootstrapper.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\_MEI25202\python313.dll	upx
behavioral1/memory/2732-74-0x000007FEF5340000-0x000007FEF59A3000-memory.dmp	upx

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

Bootstrapper.exe

description	pid	process	target process
PID 2520 wrote to memory of 2732	2520	Bootstrapper.exe	Bootstrapper.exe
PID 2520 wrote to memory of 2732	2520	Bootstrapper.exe	Bootstrapper.exe
PID 2520 wrote to memory of 2732	2520	Bootstrapper.exe	Bootstrapper.exe

C:\Users\Admin\AppData\Local\Temp\Nexus\Bootstrapper.exe
"C:\Users\Admin\AppData\Local\Temp\Nexus\Bootstrapper.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2520
- C:\Users\Admin\AppData\Local\Temp\Nexus\Bootstrapper.exe
  "C:\Users\Admin\AppData\Local\Temp\Nexus\Bootstrapper.exe"
  2⤵
  - Loads dropped DLL
  PID:2732

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\_MEI25202\python313.dll

Filesize
1.8MB

MD5
6ef5d2f77064df6f2f47af7ee4d44f0f

SHA1
0003946454b107874aa31839d41edcda1c77b0af

SHA256
ab7c640f044d2eb7f4f0a4dfe5e719dfd9e5fcd769943233f5cece436870e367

SHA512
1662cc02635d63b8114b41d11ec30a2af4b0b60209196aac937c2a608588fee47c6e93163ea6bf958246c32759ac5c82a712ea3d690e796e2070ac0ff9104266

Download Submit
\Users\Admin\AppData\Local\Temp\_MEI25202\api-ms-win-core-file-l1-2-0.dll

Filesize
21KB

MD5
1c58526d681efe507deb8f1935c75487

SHA1
0e6d328faf3563f2aae029bc5f2272fb7a742672

SHA256
ef13dce8f71173315dfc64ab839b033ab19a968ee15230e9d4d2c9d558efeee2

SHA512
8edb9a0022f417648e2ece9e22c96e2727976332025c3e7d8f15bcf6d7d97e680d1bf008eb28e2e0bd57787dcbb71d38b2deb995b8edc35fa6852ab1d593f3d1

Download Submit
\Users\Admin\AppData\Local\Temp\_MEI25202\api-ms-win-core-file-l2-1-0.dll

Filesize
18KB

MD5
bfffa7117fd9b1622c66d949bac3f1d7

SHA1
402b7b8f8dcfd321b1d12fc85a1ee5137a5569b2

SHA256
1ea267a2e6284f17dd548c6f2285e19f7edb15d6e737a55391140ce5cb95225e

SHA512
b319cc7b436b1be165cdf6ffcab8a87fe29de78f7e0b14c8f562be160481fb5483289bd5956fdc1d8660da7a3f86d8eede35c6cc2b7c3d4c852decf4b2dcdb7f

Download Submit
\Users\Admin\AppData\Local\Temp\_MEI25202\api-ms-win-core-localization-l1-2-0.dll

Filesize
21KB

MD5
724223109e49cb01d61d63a8be926b8f

SHA1
072a4d01e01dbbab7281d9bd3add76f9a3c8b23b

SHA256
4e975f618df01a492ae433dff0dd713774d47568e44c377ceef9e5b34aad1210

SHA512
19b0065b894dc66c30a602c9464f118e7f84d83010e74457d48e93aaca4422812b093b15247b24d5c398b42ef0319108700543d13f156067b169ccfb4d7b6b7c

Download Submit
\Users\Admin\AppData\Local\Temp\_MEI25202\api-ms-win-core-processthreads-l1-1-1.dll

Filesize
21KB

MD5
517eb9e2cb671ae49f99173d7f7ce43f

SHA1
4ccf38fed56166ddbf0b7efb4f5314c1f7d3b7ab

SHA256
57cc66bf0909c430364d35d92b64eb8b6a15dc201765403725fe323f39e8ac54

SHA512
492be2445b10f6bfe6c561c1fc6f5d1af6d1365b7449bc57a8f073b44ae49c88e66841f5c258b041547fcd33cbdcb4eb9dd3e24f0924db32720e51651e9286be

Download Submit
\Users\Admin\AppData\Local\Temp\_MEI25202\api-ms-win-core-timezone-l1-1-0.dll

Filesize
21KB

MD5
d12403ee11359259ba2b0706e5e5111c

SHA1
03cc7827a30fd1dee38665c0cc993b4b533ac138

SHA256
f60e1751a6ac41f08e46480bf8e6521b41e2e427803996b32bdc5e78e9560781

SHA512
9004f4e59835af57f02e8d9625814db56f0e4a98467041da6f1367ef32366ad96e0338d48fff7cc65839a24148e2d9989883bcddc329d9f4d27cae3f843117d0

Download Submit
\Users\Admin\AppData\Local\Temp\_MEI25202\ucrtbase.dll

Filesize
992KB

MD5
0e0bac3d1dcc1833eae4e3e4cf83c4ef

SHA1
4189f4459c54e69c6d3155a82524bda7549a75a6

SHA256
8a91052ef261b5fbf3223ae9ce789af73dfe1e9b0ba5bdbc4d564870a24f2bae

SHA512
a45946e3971816f66dd7ea3788aacc384a9e95011500b458212dc104741315b85659e0d56a41570731d338bdf182141c093d3ced222c007038583ceb808e26fd

Download Submit
memory/2732-74-0x000007FEF5340000-0x000007FEF59A3000-memory.dmp

Filesize
6.4MB

Download