21be0a068d7d1b57578bfb2ed850b3f3b1cfe4a4c47981ead95abdb8c20278fe

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
23-01-2024 18:54

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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

Processes:

Un_A.exe

pid process

2120 Un_A.exe
Loads dropped DLL 8 IoCs

Processes:

Uninstall VLC.exeUn_A.exe

pid process

2352 Uninstall VLC.exe
2120 Un_A.exe
2120 Un_A.exe
2120 Un_A.exe
2120 Un_A.exe
2120 Un_A.exe
2120 Un_A.exe
2120 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

Processes:

Un_A.exe

pid process

2120 Un_A.exe
2120 Un_A.exe
2120 Un_A.exe

pid	process
2120	Un_A.exe

pid	process
2352	Uninstall VLC.exe
2120	Un_A.exe
2120	Un_A.exe
2120	Un_A.exe
2120	Un_A.exe
2120	Un_A.exe
2120	Un_A.exe
2120	Un_A.exe

pid	process
2120	Un_A.exe
2120	Un_A.exe
2120	Un_A.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

Uninstall VLC.exe

description	pid	process	target process
PID 2352 wrote to memory of 2120	2352	Uninstall VLC.exe	Un_A.exe
PID 2352 wrote to memory of 2120	2352	Uninstall VLC.exe	Un_A.exe
PID 2352 wrote to memory of 2120	2352	Uninstall VLC.exe	Un_A.exe
PID 2352 wrote to memory of 2120	2352	Uninstall VLC.exe	Un_A.exe

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:2352

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:2120

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\nsy1305.tmp\StdUtils.dll

Filesize
100KB

MD5
c6a6e03f77c313b267498515488c5740

SHA1
3d49fc2784b9450962ed6b82b46e9c3c957d7c15

SHA256
b72e9013a6204e9f01076dc38dabbf30870d44dfc66962adbf73619d4331601e

SHA512
9870c5879f7b72836805088079ad5bbafcb59fc3d9127f2160d4ec3d6e88d3cc8ebe5a9f5d20a4720fe6407c1336ef10f33b2b9621bc587e930d4cbacf337803

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsy1305.tmp\UAC.dll

Filesize
14KB

MD5
adb29e6b186daa765dc750128649b63d

SHA1
160cbdc4cb0ac2c142d361df138c537aa7e708c9

SHA256
2f7f8fc05dc4fd0d5cda501b47e4433357e887bbfed7292c028d99c73b52dc08

SHA512
b28adcccf0c33660fecd6f95f28f11f793dc9988582187617b4c113fb4e6fdad4cf7694cd8c0300a477e63536456894d119741a940dda09b7df3ff0087a7eada

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C:\Users\Admin\AppData\Local\Temp\nsy1305.tmp\nsProcess.dll

Filesize
4KB

MD5
f0438a894f3a7e01a4aae8d1b5dd0289

SHA1
b058e3fcfb7b550041da16bf10d8837024c38bf6

SHA256
30c6c3dd3cc7fcea6e6081ce821adc7b2888542dae30bf00e881c0a105eb4d11

SHA512
f91fcea19cbddf8086affcb63fe599dc2b36351fc81ac144f58a80a524043ddeaa3943f36c86ebae45dd82e8faf622ea7b7c9b776e74c54b93df2963cfe66cc7

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\Users\Admin\AppData\Local\Temp\nsy1305.tmp\System.dll

Filesize
12KB

MD5
0d7ad4f45dc6f5aa87f606d0331c6901

SHA1
48df0911f0484cbe2a8cdd5362140b63c41ee457

SHA256
3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca

SHA512
c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9

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\Users\Admin\AppData\Local\Temp\nsy1305.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