2b49ca21dd645edd3d08709a68f205cc59bcc2a48b8b3ba49815fdceefbb1c4e

Analysis

max time kernel
137s
max time network
138s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
09/10/2024, 00:49

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General

Target
uninst.exe
Size 376KB
Sample241009-a6rjfazamd
SHA256 5a8202c253886c6ad5a4c626b72e4cdafc9075f8b8296829d1ff3aba4e7148f1
MD5 765f54b192c4bf31c01fa469894034d9
SHA1 3d53eeaf5abab00b30402ec6947a9d2fad1207a8
SHA512 b50d2b5b02eaad26ebeea66f1d1e4a3c71180a98619e1c80a536f3a289050d50fe884fc0023b4efc71d2cbd5fe4fea5f3fd9a03918d9e9ab6c5c67486493677f
SSDEEP 3072:lQIURTXJ+2WrSfqW4C3ZtmltDcFtlEesQgC5tM:lsc6qY3lEesQgCHM
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

discovery

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2356	Au_.exe

Executes dropped EXE 1 IoCs

pid	Process
2356	Au_.exe

Loads dropped DLL 5 IoCs

pid	Process
2260	uninst.exe
2356	Au_.exe
2356	Au_.exe
2356	Au_.exe
2356	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 3 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	IEXPLORE.EXE
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
behavioral29/files/0x00040000000194f0-2.dat	nsis_installer_1
behavioral29/files/0x00040000000194f0-2.dat	nsis_installer_2

Modifies Internet Explorer settings 1 TTPs 34 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb010000007b88b8645d6de74ab21efaf0de98379b00000000020000000000106600000001000020000000497aa1b42d08543d5b845d74e225c04ff3f8370bcd50e7bf49132df1852ad9b7000000000e8000000002000020000000ff3692a2c9e158dee3b1cefb8cdd09b43a7e7ea8e5068dea1f1c7b55c0ec8f6f200000006745c590ad5c943711619bfb15f06f26a6b8e0372b39855aef4d87c6c9f84d1640000000bb50b19a7e63484d38df2f709fc934ea694a2bb21ec503678524a08256f0e02d2f2ae793b7fbdc9dd186fe4f309c23b0ba811dce6a3462bb95344a5442c935d6	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Internet Explorer\SearchScopes\DownloadRetries = "2"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "434623353"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Internet Explorer\SearchScopes	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\MFV = 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	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Internet Explorer\PageSetup	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 50af3f01231adb01	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{13100451-8616-11EF-9E99-E699F793024F} = "0"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3048	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
3048	iexplore.exe
3048	iexplore.exe
2552	IEXPLORE.EXE
2552	IEXPLORE.EXE
2552	IEXPLORE.EXE
2552	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2260 wrote to memory of 2356	2260	uninst.exe	29
PID 2260 wrote to memory of 2356	2260	uninst.exe	29
PID 2260 wrote to memory of 2356	2260	uninst.exe	29
PID 2260 wrote to memory of 2356	2260	uninst.exe	29
PID 2260 wrote to memory of 2356	2260	uninst.exe	29
PID 2260 wrote to memory of 2356	2260	uninst.exe	29
PID 2260 wrote to memory of 2356	2260	uninst.exe	29
PID 2356 wrote to memory of 3048	2356	Au_.exe	30
PID 2356 wrote to memory of 3048	2356	Au_.exe	30
PID 2356 wrote to memory of 3048	2356	Au_.exe	30
PID 2356 wrote to memory of 3048	2356	Au_.exe	30
PID 3048 wrote to memory of 2552	3048	iexplore.exe	31
PID 3048 wrote to memory of 2552	3048	iexplore.exe	31
PID 3048 wrote to memory of 2552	3048	iexplore.exe	31
PID 3048 wrote to memory of 2552	3048	iexplore.exe	31
PID 3048 wrote to memory of 2552	3048	iexplore.exe	31
PID 3048 wrote to memory of 2552	3048	iexplore.exe	31
PID 3048 wrote to memory of 2552	3048	iexplore.exe	31

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:2260
- 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
  - Suspicious use of WriteProcessMemory
  PID:2356
- - C:\Program Files\Internet Explorer\iexplore.exe
    "C:\Program Files\Internet Explorer\iexplore.exe" http://www.rmzt.com/
    3⤵
    - Modifies Internet Explorer settings
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3048
  - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3048 CREDAT:275457 /prefetch:2
      4⤵
      System Location Discovery: System Language Discovery
      Modifies Internet Explorer settings
      Suspicious use of SetWindowsHookEx
      PID:2552

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact