c5b5def1c8882b702b6b25cbd94461c737bc151366d2d9eba5006c04886bfc9a

Analysis

max time kernel
240s
max time network
244s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
24-12-2024 08:59

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General

Target

winrar-x64-701.exe
Size

3.8MB
MD5

46c17c999744470b689331f41eab7df1
SHA1

b8a63127df6a87d333061c622220d6d70ed80f7c
SHA256

c5b5def1c8882b702b6b25cbd94461c737bc151366d2d9eba5006c04886bfc9a
SHA512

4b02a3e85b699f62df1b4fe752c4dee08cfabc9b8bb316bc39b854bd5187fc602943a95788ec680c7d3dc2c26ad882e69c0740294bd6cb3b32cdcd165a9441b6
SSDEEP

98304:6NRBOBfKgQIm9EOTqw8vjh9Ac9nUNupK4hVvcF+yHrAr:sR/gmeOqv7Ac9F0kB

Score

4^/10

Malware Config

Signatures

Drops file in Program Files directory 58 IoCs

description	ioc	Process
File created	C:\Program Files\WinRAR\UnRAR.exe	winrar-x64-701.exe
File created	C:\Program Files\WinRAR\RarExt32.dll	winrar-x64-701.exe
File opened for modification	C:\Program Files\WinRAR\RarExt32.dll	winrar-x64-701.exe
File created	C:\Program Files\WinRAR\RarExtPackage.msix	winrar-x64-701.exe
File created	C:\Program Files\WinRAR\WinCon.SFX	winrar-x64-701.exe
File created	C:\Program Files\WinRAR\Zip.SFX	winrar-x64-701.exe
File opened for modification	C:\Program Files\WinRAR\Uninstall.exe	winrar-x64-701.exe
File opened for modification	C:\Program Files\WinRAR\7zxa.dll	winrar-x64-701.exe
File created	C:\Program Files\WinRAR\Order.htm	winrar-x64-701.exe
File created	C:\Program Files\WinRAR\Uninstall.lst	winrar-x64-701.exe
File opened for modification	C:\Program Files\WinRAR\RarExt.dll	winrar-x64-701.exe
File created	C:\Program Files\WinRAR\RarExtLogo.altform-unplated_targetsize-48.png	winrar-x64-701.exe
File created	C:\Program Files\WinRAR\License.txt	winrar-x64-701.exe
File opened for modification	C:\Program Files\WinRAR\Default.SFX	winrar-x64-701.exe
File created	C:\Program Files\WinRAR\Default32.SFX	winrar-x64-701.exe
File opened for modification	C:\Program Files\WinRAR\Zip.SFX	winrar-x64-701.exe
File created	C:\Program Files\WinRAR\Rar.exe	winrar-x64-701.exe
File opened for modification	C:\Program Files\WinRAR\WinRAR.exe	winrar-x64-701.exe
File created	C:\Program Files\WinRAR\Uninstall.exe	winrar-x64-701.exe
File opened for modification	C:\Program Files\WinRAR\WinRAR.chm	winrar-x64-701.exe
File opened for modification	C:\Program Files\WinRAR\RarExtPackage.msix	winrar-x64-701.exe
File opened for modification	C:\Program Files\WinRAR\UnRAR.exe	winrar-x64-701.exe
File created	C:\Program Files\WinRAR\7zxa.dll	winrar-x64-701.exe
File created	C:\Program Files\WinRAR\WinRAR.chm	winrar-x64-701.exe
File created	C:\Program Files\WinRAR\ReadMe.txt	winrar-x64-701.exe
File opened for modification	C:\Program Files\WinRAR\Default32.SFX	winrar-x64-701.exe
File created	C:\Program Files\WinRAR\Zip32.SFX	winrar-x64-701.exe
File created	C:\Program Files\WinRAR\Rar.txt	winrar-x64-701.exe
File opened for modification	C:\Program Files\WinRAR\RarExtLogo.altform-unplated_targetsize-48.png	winrar-x64-701.exe
File created	C:\Program Files\WinRAR\RarExtInstaller.exe	winrar-x64-701.exe
File opened for modification	C:\Program Files\WinRAR\Order.htm	winrar-x64-701.exe
File opened for modification	C:\Program Files\WinRAR\RarExtLogo.altform-unplated_targetsize-32.png	winrar-x64-701.exe
File opened for modification	C:\Program Files\WinRAR\RarExtLogo.altform-unplated_targetsize-64.png	winrar-x64-701.exe
File created	C:\Program Files\WinRAR\__tmp_rar_sfx_access_check_259560438	winrar-x64-701.exe
File opened for modification	C:\Program Files\WinRAR\Rar.txt	winrar-x64-701.exe
File created	C:\Program Files\WinRAR\RarFiles.lst	winrar-x64-701.exe
File created	C:\Program Files\WinRAR\Default.SFX	winrar-x64-701.exe
File opened for modification	C:\Program Files\WinRAR\Zip32.SFX	winrar-x64-701.exe
File opened for modification	C:\Program Files\WinRAR\ReadMe.txt	winrar-x64-701.exe
File opened for modification	C:\Program Files\WinRAR\Descript.ion	winrar-x64-701.exe
File opened for modification	C:\Program Files\WinRAR\WhatsNew.txt	winrar-x64-701.exe
File created	C:\Program Files\WinRAR\Resources.pri	winrar-x64-701.exe
File created	C:\Program Files\WinRAR\RarExtLogo.altform-unplated_targetsize-32.png	winrar-x64-701.exe
File created	C:\Program Files\WinRAR\Descript.ion	winrar-x64-701.exe
File opened for modification	C:\Program Files\WinRAR\Rar.exe	winrar-x64-701.exe
File created	C:\Program Files\WinRAR\WinRAR.exe	winrar-x64-701.exe
File opened for modification	C:\Program Files\WinRAR\RarFiles.lst	winrar-x64-701.exe
File opened for modification	C:\Program Files\WinRAR\Resources.pri	winrar-x64-701.exe
File created	C:\Program Files\WinRAR\WinCon32.SFX	winrar-x64-701.exe
File opened for modification	C:\Program Files\WinRAR\WinCon32.SFX	winrar-x64-701.exe
File created	C:\Program Files\WinRAR\RarExtLogo.altform-unplated_targetsize-64.png	winrar-x64-701.exe
File opened for modification	C:\Program Files\WinRAR\RarExtInstaller.exe	winrar-x64-701.exe
File opened for modification	C:\Program Files\WinRAR\Uninstall.lst	winrar-x64-701.exe
File opened for modification	C:\Program Files\WinRAR\WinCon.SFX	winrar-x64-701.exe
File opened for modification	C:\Program Files\WinRAR\License.txt	winrar-x64-701.exe
File created	C:\Program Files\WinRAR\WhatsNew.txt	winrar-x64-701.exe
File created	C:\Program Files\WinRAR\RarExt.dll	winrar-x64-701.exe
File opened for modification	C:\Program Files\WinRAR	winrar-x64-701.exe

Executes dropped EXE 1 IoCs

pid	Process
2712	uninstall.exe

Loads dropped DLL 3 IoCs

pid	Process
2376	winrar-x64-701.exe
1268	Process not Found
1268	Process not Found

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Internet Explorer\Main	winrar-x64-701.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2376	winrar-x64-701.exe
2376	winrar-x64-701.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2376 wrote to memory of 2712	2376	winrar-x64-701.exe	29
PID 2376 wrote to memory of 2712	2376	winrar-x64-701.exe	29
PID 2376 wrote to memory of 2712	2376	winrar-x64-701.exe	29

C:\Users\Admin\AppData\Local\Temp\winrar-x64-701.exe
"C:\Users\Admin\AppData\Local\Temp\winrar-x64-701.exe"
1⤵
- Drops file in Program Files directory
- Loads dropped DLL
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2376
- C:\Program Files\WinRAR\uninstall.exe
  "C:\Program Files\WinRAR\uninstall.exe" /setup
  2⤵
  - Executes dropped EXE
  PID:2712

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Program Files\WinRAR\Uninstall.exe

Filesize
477KB

MD5
4783f1a5f0bba7a6a40cb74bc8c41217

SHA1
a22b9dc8074296841a5a78ea41f0e2270f7b7ad7

SHA256
f376aaa0d4444d0727db5598e8377f9f1606400adbbb4772d39d1e4937d5f28c

SHA512
463dff17f06eca41ae76e3c0b2efc4ef36529aa2eaed5163eec0a912fe7802c9fb38c37acfe94b82972861aaf1acf02823a5948fbb3292bb4743641acb99841e

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