40ab55c737a8c45953cc87e8b4f51c7e6a4192a43d2e11154f1052daf4b305ec

Analysis

max time kernel
136s
max time network
108s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
22/08/2024, 11:29

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General

Target

uninst.exe
Size

65KB
MD5

4d1cd4f9b1bf87919490738c7310b706
SHA1

f5ef2062077ad83919a63f729dec670d5d6dc28c
SHA256

2be47d7a07c4504e4c9fe3e3e9fc1a13315b3f8def9a2539964c538c0bd055f6
SHA512

be54a1576abd4846ad2c3fb5576b36ad1303f25d7ce22d5b65c8df0c3700bda09b7b9ed60c7bd421090f4ea8ad40266ed2f49a10ae4e8af9fdbd3b85e0496ccb
SSDEEP

1536:VQpQ5EP0ijnRTXJzEBhHRIBuvzSTQDTSFg:VQIURTXJCQueJFg

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4864	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
behavioral24/files/0x0007000000023515-4.dat	nsis_installer_1
behavioral24/files/0x0007000000023515-4.dat	nsis_installer_2

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1688 wrote to memory of 4864	1688	uninst.exe	85
PID 1688 wrote to memory of 4864	1688	uninst.exe	85
PID 1688 wrote to memory of 4864	1688	uninst.exe	85

C:\Users\Admin\AppData\Local\Temp\uninst.exe
"C:\Users\Admin\AppData\Local\Temp\uninst.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1688
- 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:4864

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

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

Filesize
65KB

MD5
4d1cd4f9b1bf87919490738c7310b706

SHA1
f5ef2062077ad83919a63f729dec670d5d6dc28c

SHA256
2be47d7a07c4504e4c9fe3e3e9fc1a13315b3f8def9a2539964c538c0bd055f6

SHA512
be54a1576abd4846ad2c3fb5576b36ad1303f25d7ce22d5b65c8df0c3700bda09b7b9ed60c7bd421090f4ea8ad40266ed2f49a10ae4e8af9fdbd3b85e0496ccb

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