2240bf5fb5d80938b0676c46ef9f84bc1739c32f60c473ff85e530ae0eca2818

Analysis

max time kernel
146s
max time network
150s
platform
windows11-21h2_x64
resource
win11-20240611-en
resource tags

arch:x64arch:x86image:win11-20240611-enlocale:en-usos:windows11-21h2-x64system
submitted
04-07-2024 16:02

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General

Target

uninstaller.exe
Size

74KB
MD5

bfffc38fff05079b15a5317e279dc7a9
SHA1

0c18db954f11646d65d0300e58fefcd9ff7634de
SHA256

c4e59737ffd988ef4bc7a62e3316a470b1b09a9889f65908110fba3d7b1c6500
SHA512

d30220e024ac242285ea757006e7da3874e5f889951de226d48c372a6a8701b76d4a917134ecc1e72c6c3a8d43444762288e7134a25d837e9f43d972675c81d6
SSDEEP

1536:fRPYqa5pic6jXFdL2KiMcrgCKdO/LeAyNLs9Y0tIdJVgwkL7U3:pPA6jXFN2Mcr/tTeAt9jidJVnkfU

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
4156	Au_.exe

Executes dropped EXE 1 IoCs

pid	Process
4156	Au_.exe

Loads dropped DLL 1 IoCs

pid	Process
4156	Au_.exe

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

System Information Discovery
T1082

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral12/files/0x000100000002aa0a-5.dat	nsis_installer_1
behavioral12/files/0x000100000002aa0a-5.dat	nsis_installer_2

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3944 wrote to memory of 4156	3944	uninstaller.exe	80
PID 3944 wrote to memory of 4156	3944	uninstaller.exe	80
PID 3944 wrote to memory of 4156	3944	uninstaller.exe	80

C:\Users\Admin\AppData\Local\Temp\uninstaller.exe
"C:\Users\Admin\AppData\Local\Temp\uninstaller.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3944
- C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Au_.exe
  "C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Au_.exe" _?=C:\Users\Admin\AppData\Local\Temp\
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Loads dropped DLL
  PID:4156

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\nsc7292.tmp\System.dll

Filesize
10KB

MD5
56a321bd011112ec5d8a32b2f6fd3231

SHA1
df20e3a35a1636de64df5290ae5e4e7572447f78

SHA256
bb6df93369b498eaa638b0bcdc4bb89f45e9b02ca12d28bcedf4629ea7f5e0f1

SHA512
5354890cbc53ce51081a78c64ba9c4c8c4dc9e01141798c1e916e19c5776dac7c82989fad0f08c73e81aaba332dad81205f90d0663119af45550b97b338b9cc3

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C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Au_.exe

Filesize
74KB

MD5
bfffc38fff05079b15a5317e279dc7a9

SHA1
0c18db954f11646d65d0300e58fefcd9ff7634de

SHA256
c4e59737ffd988ef4bc7a62e3316a470b1b09a9889f65908110fba3d7b1c6500

SHA512
d30220e024ac242285ea757006e7da3874e5f889951de226d48c372a6a8701b76d4a917134ecc1e72c6c3a8d43444762288e7134a25d837e9f43d972675c81d6

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