295967ac71f014113a7e7c10737ff8b1b3fbe65bd037995ee7a998f16b94144a

Analysis

max time kernel
121s
max time network
126s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
19-06-2024 18:40

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General

Target

Uninstall.exe
Size

77KB
MD5

ff11f586d42a888469164063c399d917
SHA1

b3feded2344ea9a22035f628a441883c6216bf3e
SHA256

869c31354b5c3f1c7586fec5c51270a606ca5210d4ea9df4a078a1d7bc62112e
SHA512

573c35c9f066a2fbfba29d1cee5157b0d518d62210beb088d8c5380d43da4ee749a215ff76531e9ff59161a6449bdb44e3e0ee2ec4b18e03e0d36cbb131cbc86
SSDEEP

1536:7iZU91Rzv4f/+LHgmpoM4sXJKTmdxQi5jaQkaB72/v97+N:7iezvrL9oMXJKatjIg639KN

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

Au_.exe

pid process

2608 Au_.exe
Loads dropped DLL 2 IoCs

Processes:

Uninstall.exeAu_.exe

pid process

2452 Uninstall.exe
2608 Au_.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2608	Au_.exe

pid	process
2452	Uninstall.exe
2608	Au_.exe

NSIS installer 2 IoCs

installer

Processes:

resource	yara_rule
\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe	nsis_installer_1
\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe	nsis_installer_2

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Au_.exe

pid process

2608 Au_.exe

pid	process
2608	Au_.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

Uninstall.exe

description	pid	process	target process
PID 2452 wrote to memory of 2608	2452	Uninstall.exe	Au_.exe
PID 2452 wrote to memory of 2608	2452	Uninstall.exe	Au_.exe
PID 2452 wrote to memory of 2608	2452	Uninstall.exe	Au_.exe
PID 2452 wrote to memory of 2608	2452	Uninstall.exe	Au_.exe

C:\Users\Admin\AppData\Local\Temp\Uninstall.exe
"C:\Users\Admin\AppData\Local\Temp\Uninstall.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2452

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
- Loads dropped DLL
- Suspicious behavior: GetForegroundWindowSpam
PID:2608

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsoF6D.tmp\ioSpecial.ini
Filesize
588B

MD5
9298e7379f610ccd56d701f9bc189de2

SHA1
8450d8bc890b918d782a99cc9a329fb8f8bb8d82

SHA256
850b45457e799843e1a7011f22be6ea7ae574d5568a81e4f8591e0b9d3c06632

SHA512
33407eed5216c89e43b4f8c3a0ac523f2ecf3e528f4dfc726de9fe979e47bbba4af61d81b1ec44f24acfcc04e7285d9f8789c2aee403158b49d4ced534e2ae43

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C:\Users\Admin\AppData\Local\Temp\nsoF6D.tmp\ioSpecial.ini
Filesize
601B

MD5
2ab8d590952f4750ffbc51fbfdfd75ac

SHA1
f702dfe471ea1d3ab839aea44a70cb3adba866a6

SHA256
c9addd0b43d77069a5d89710dc55bd438cc7ed1486b0bb195760fbf2d1fc1a75

SHA512
96aaea522fd2971d0015c6eb61cdd7fe17c53745d5775dbb5508008ab427f53195b72748848050f3e207c6ac975b9a315b3d00aeef0f657e50bc4d0865ad593f

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\Users\Admin\AppData\Local\Temp\nsoF6D.tmp\InstallOptions.dll
Filesize
14KB

MD5
325b008aec81e5aaa57096f05d4212b5

SHA1
27a2d89747a20305b6518438eff5b9f57f7df5c3

SHA256
c9cd5c9609e70005926ae5171726a4142ffbcccc771d307efcd195dafc1e6b4b

SHA512
18362b3aee529a27e85cc087627ecf6e2d21196d725f499c4a185cb3a380999f43ff1833a8ebec3f5ba1d3a113ef83185770e663854121f2d8b885790115afdf

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\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe
Filesize
77KB

MD5
ff11f586d42a888469164063c399d917

SHA1
b3feded2344ea9a22035f628a441883c6216bf3e

SHA256
869c31354b5c3f1c7586fec5c51270a606ca5210d4ea9df4a078a1d7bc62112e

SHA512
573c35c9f066a2fbfba29d1cee5157b0d518d62210beb088d8c5380d43da4ee749a215ff76531e9ff59161a6449bdb44e3e0ee2ec4b18e03e0d36cbb131cbc86

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