76b814bd8f4db6fb6c11a69f30d321a94a9cd6aac3ec31bf8e1b4732027d4119

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
27/09/2024, 08:18

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General

Target

uninst.exe
Size

58KB
MD5

4b7a489d94c2ba1b40fdee0c297afea8
SHA1

5fc488b11208b01d64d66b790bfaf43af801d4e7
SHA256

a23fd690257aa30d7902ba15e1d4bd5df0492263c5add6e6af398b901d1d6d4c
SHA512

be288b81a100b76b241266a3950a97a6485b8768902c3beef5c08dbd70a6a0c0faf049e06a42e76337729efef78dc19dc39dd20d302b7bdb04546109d03b64e2
SSDEEP

1536:+pgpHzb9dZVX9fHMvG0D3XJNfYRN6QcIeVhVkCo:EgXdZt9P6D3XJNqCVhVkCo

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2768	Au_.exe

Loads dropped DLL 1 IoCs

pid	Process
2668	uninst.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/0x00070000000191ad-2.dat	nsis_installer_1
behavioral11/files/0x00070000000191ad-2.dat	nsis_installer_2

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2668 wrote to memory of 2768	2668	uninst.exe	30
PID 2668 wrote to memory of 2768	2668	uninst.exe	30
PID 2668 wrote to memory of 2768	2668	uninst.exe	30
PID 2668 wrote to memory of 2768	2668	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:2668
- 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⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2768

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
58KB

MD5
4b7a489d94c2ba1b40fdee0c297afea8

SHA1
5fc488b11208b01d64d66b790bfaf43af801d4e7

SHA256
a23fd690257aa30d7902ba15e1d4bd5df0492263c5add6e6af398b901d1d6d4c

SHA512
be288b81a100b76b241266a3950a97a6485b8768902c3beef5c08dbd70a6a0c0faf049e06a42e76337729efef78dc19dc39dd20d302b7bdb04546109d03b64e2

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