21be0a068d7d1b57578bfb2ed850b3f3b1cfe4a4c47981ead95abdb8c20278fe

Analysis

max time kernel
122s
max time network
128s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
10-03-2024 16:05

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General

Target

Uninstall VLC.exe
Size

176KB
MD5

be867803d50044eacf0b4431d4f8ba73
SHA1

8c24006b5268fc44edd52f81dec7e225c0ace63b
SHA256

8ac4bd12f48777baf67a6724ba6ffe0ce0c710f59c43d691e69b0c703c0482f6
SHA512

6e581023614ad87cce45939638c8a185f67196b35af291f5b97cd66a08c1dc6cf6a1b52d818e75aa606412b4340d90f2a9df880c8fcf139e3367b9a78c9546b0
SSDEEP

3072:/n77v00hEoDEtauISLVkEC90RmquayIAaipD4aH2tvhOEA1RJCir86SrSrvrRbOd:/740IYIVkE3RmCvA7D4s2t0EyL+2iaUp

Score

4^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2100	Un_A.exe

Loads dropped DLL 8 IoCs

pid	Process
3008	Uninstall VLC.exe
2100	Un_A.exe
2100	Un_A.exe
2100	Un_A.exe
2100	Un_A.exe
2100	Un_A.exe
2100	Un_A.exe
2100	Un_A.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2100	Un_A.exe
2100	Un_A.exe
2100	Un_A.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3008 wrote to memory of 2100	3008	Uninstall VLC.exe	28
PID 3008 wrote to memory of 2100	3008	Uninstall VLC.exe	28
PID 3008 wrote to memory of 2100	3008	Uninstall VLC.exe	28
PID 3008 wrote to memory of 2100	3008	Uninstall VLC.exe	28

C:\Users\Admin\AppData\Local\Temp\Uninstall VLC.exe
"C:\Users\Admin\AppData\Local\Temp\Uninstall VLC.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3008
- C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe
  "C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe" _?=C:\Users\Admin\AppData\Local\Temp\
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious behavior: EnumeratesProcesses
  PID:2100

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsi4E5F.tmp\StdUtils.dll

Filesize
100KB

MD5
c6a6e03f77c313b267498515488c5740

SHA1
3d49fc2784b9450962ed6b82b46e9c3c957d7c15

SHA256
b72e9013a6204e9f01076dc38dabbf30870d44dfc66962adbf73619d4331601e

SHA512
9870c5879f7b72836805088079ad5bbafcb59fc3d9127f2160d4ec3d6e88d3cc8ebe5a9f5d20a4720fe6407c1336ef10f33b2b9621bc587e930d4cbacf337803

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsi4E5F.tmp\nsProcess.dll

Filesize
4KB

MD5
f0438a894f3a7e01a4aae8d1b5dd0289

SHA1
b058e3fcfb7b550041da16bf10d8837024c38bf6

SHA256
30c6c3dd3cc7fcea6e6081ce821adc7b2888542dae30bf00e881c0a105eb4d11

SHA512
f91fcea19cbddf8086affcb63fe599dc2b36351fc81ac144f58a80a524043ddeaa3943f36c86ebae45dd82e8faf622ea7b7c9b776e74c54b93df2963cfe66cc7

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\Users\Admin\AppData\Local\Temp\nsi4E5F.tmp\System.dll

Filesize
12KB

MD5
0d7ad4f45dc6f5aa87f606d0331c6901

SHA1
48df0911f0484cbe2a8cdd5362140b63c41ee457

SHA256
3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca

SHA512
c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9

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\Users\Admin\AppData\Local\Temp\nsi4E5F.tmp\UAC.dll

Filesize
14KB

MD5
adb29e6b186daa765dc750128649b63d

SHA1
160cbdc4cb0ac2c142d361df138c537aa7e708c9

SHA256
2f7f8fc05dc4fd0d5cda501b47e4433357e887bbfed7292c028d99c73b52dc08

SHA512
b28adcccf0c33660fecd6f95f28f11f793dc9988582187617b4c113fb4e6fdad4cf7694cd8c0300a477e63536456894d119741a940dda09b7df3ff0087a7eada

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\Users\Admin\AppData\Local\Temp\nsi4E5F.tmp\WinShell.dll

Filesize
3KB

MD5
1cc7c37b7e0c8cd8bf04b6cc283e1e56

SHA1
0b9519763be6625bd5abce175dcc59c96d100d4c

SHA256
9be85b986ea66a6997dde658abe82b3147ed2a1a3dcb784bb5176f41d22815a6

SHA512
7acf7f8e68aa6066b59ca9f2ae2e67997e6b347bc08eb788d2a119b3295c844b5b9606757168e8d2fbd61c2cda367bf80e9e48c9a52c28d5a7a00464bfd2048f

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\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe

Filesize
176KB

MD5
be867803d50044eacf0b4431d4f8ba73

SHA1
8c24006b5268fc44edd52f81dec7e225c0ace63b

SHA256
8ac4bd12f48777baf67a6724ba6ffe0ce0c710f59c43d691e69b0c703c0482f6

SHA512
6e581023614ad87cce45939638c8a185f67196b35af291f5b97cd66a08c1dc6cf6a1b52d818e75aa606412b4340d90f2a9df880c8fcf139e3367b9a78c9546b0

Download Submit