4da6d05310e71458b83159152f8094594eff425a9c3c0830ff74b9922108b0a5

Analysis

max time kernel
102s
max time network
104s
platform
windows10-2004_x64
resource
win10v2004-20240910-en
resource tags

arch:x64arch:x86image:win10v2004-20240910-enlocale:en-usos:windows10-2004-x64system
submitted
19/09/2024, 05:39

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General

Target

$0/uninstall.exe
Size

78KB
MD5

fe839ac1d4d65210a6878e860a9e9812
SHA1

4f06d2f9ba5375955a29e802bd5820a6abfdc4d1
SHA256

51b54e24d30b449302cb58a0e958a60c2911127816762a6477cf7a6408082998
SHA512

605b11db73a268a4ef1223962d3c2677f7a86ce505829a7a059a0a5bab54da327af1dba78efbab0c6d7a2e3f26cd58ff9c5f9d78a241eadb3920ea4868185fda
SSDEEP

1536:PEkjY1zy214Qay0DGkJ7qAELVigJwIcpub3RsagxxZ/RL32/Dq:8kjAJ4dDGkJ+AI0tB8hsagjZ/RLm/O

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2204	Au_.exe

Loads dropped DLL 2 IoCs

pid	Process
2204	Au_.exe
2204	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	uninstall.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Au_.exe

NSIS installer 1 IoCs

installer

resource	yara_rule
behavioral8/files/0x000a000000023bd5-3.dat	nsis_installer_1

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5020 wrote to memory of 2204	5020	uninstall.exe	85
PID 5020 wrote to memory of 2204	5020	uninstall.exe	85
PID 5020 wrote to memory of 2204	5020	uninstall.exe	85

C:\Users\Admin\AppData\Local\Temp\$0\uninstall.exe
"C:\Users\Admin\AppData\Local\Temp\$0\uninstall.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5020
- 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\$0\
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:2204

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\nsi8D9B.tmp\InstallOptions.dll

Filesize
13KB

MD5
d765c492c21689e3d9d61634371fd861

SHA1
ac200933671ae52c9d5544d0e2e8e9144d286c83

SHA256
551e6042dd494ea01549555ffc194ab9729da09058ec714eb368dd06642c9bbc

SHA512
9919a9e848c8f1e26c75d0d29207571e4b86a4140bd554743d2c1f8bd7f386fe4919345b163d89a5d907fb165e435ba0ac5f6b1101713636141f156a420e2e0f

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C:\Users\Admin\AppData\Local\Temp\nsi8D9B.tmp\System.dll

Filesize
10KB

MD5
fe24766ba314f620d57d0cf7339103c0

SHA1
8641545f03f03ff07485d6ec4d7b41cbb898c269

SHA256
802ef71440f662f456bed6283a5ff78066af016897fe6bfd29cac6edc2967bbd

SHA512
60d36959895cebf29c4e7713e6d414980139c7aa4ed1c8c96fefb672c1263af0ce909fb409534355895649c0e8056635112efb0da2ba05694446aec2ca77e2e3

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C:\Users\Admin\AppData\Local\Temp\nsi8D9B.tmp\ioSpecial.ini

Filesize
610B

MD5
a308e0339414112a5303c0a74553128f

SHA1
363aa85e1ad02702e022074d164ee39681a9b5e9

SHA256
e4d157fec879e6d7c95edd8ef1dfe96d4d164ed8451e10ddc12eca605dda8083

SHA512
9a4045eaa16fed10bc15e402f9d17a1ec4d8773b9cc2d8395c84a77e664892a8d24319bb17ee72a6451e0bcb4d4dca3891e7e756155598a02c2e92661ff20ef3

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

Filesize
78KB

MD5
fe839ac1d4d65210a6878e860a9e9812

SHA1
4f06d2f9ba5375955a29e802bd5820a6abfdc4d1

SHA256
51b54e24d30b449302cb58a0e958a60c2911127816762a6477cf7a6408082998

SHA512
605b11db73a268a4ef1223962d3c2677f7a86ce505829a7a059a0a5bab54da327af1dba78efbab0c6d7a2e3f26cd58ff9c5f9d78a241eadb3920ea4868185fda

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