c8eff05ddf176ea6b12f5e973263f9eb2c5961300312873d328a18eb8995b504

Analysis

max time kernel
15s
max time network
20s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
24-07-2024 08:54

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General

Target

uninst.exe
Size

48KB
MD5

90d279bd1f30afa0842f36b8640ebdd5
SHA1

7e382d3d3adf53384e468ff157755396d3610361
SHA256

9a5c97ea1238656c784cd41dc8f75edb1115db2f317e081aa3045a943b090d74
SHA512

cfea9c20d08262c018fe712170b51a5ca15e93cc1ad65efdc2bd8cb5ee03e5c87fe906c64f61ded1955dbe8712863a6fa5efbfc0d6b6e7fa73eae1c35704035a
SSDEEP

1536:GpgpHzb9dZVX9fHMvG0D3XJtgdLeAyNJvk:sgXdZt9P6D3XJtceAl

Score

7^/10

discovery

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2824	Au_.exe

Executes dropped EXE 1 IoCs

pid	Process
2824	Au_.exe

Loads dropped DLL 4 IoCs

pid	Process
1052	uninst.exe
2824	Au_.exe
2824	Au_.exe
2824	Au_.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	uninst.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Au_.exe

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral11/files/0x0005000000018fcd-2.dat	nsis_installer_1
behavioral11/files/0x0005000000018fcd-2.dat	nsis_installer_2

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1052 wrote to memory of 2824	1052	uninst.exe	30
PID 1052 wrote to memory of 2824	1052	uninst.exe	30
PID 1052 wrote to memory of 2824	1052	uninst.exe	30
PID 1052 wrote to memory of 2824	1052	uninst.exe	30
PID 1052 wrote to memory of 2824	1052	uninst.exe	30
PID 1052 wrote to memory of 2824	1052	uninst.exe	30
PID 1052 wrote to memory of 2824	1052	uninst.exe	30

C:\Users\Admin\AppData\Local\Temp\uninst.exe
"C:\Users\Admin\AppData\Local\Temp\uninst.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1052
- C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe
  "C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe" _?=C:\Users\Admin\AppData\Local\Temp\
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:2824

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe

Filesize
48KB

MD5
90d279bd1f30afa0842f36b8640ebdd5

SHA1
7e382d3d3adf53384e468ff157755396d3610361

SHA256
9a5c97ea1238656c784cd41dc8f75edb1115db2f317e081aa3045a943b090d74

SHA512
cfea9c20d08262c018fe712170b51a5ca15e93cc1ad65efdc2bd8cb5ee03e5c87fe906c64f61ded1955dbe8712863a6fa5efbfc0d6b6e7fa73eae1c35704035a

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