Analysis
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max time kernel
146s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20240221-en -
resource tags
arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system -
submitted
24-02-2024 08:34
Static task
static1
Behavioral task
behavioral1
Sample
e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe
Resource
win10v2004-20240221-en
General
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Target
e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe
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Size
473KB
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MD5
f83fb9ce6a83da58b20685c1d7e1e546
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SHA1
01c459b549c1c2a68208d38d4ba5e36d29212a4f
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SHA256
e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684
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SHA512
934ec9073a28b90e8df785bef49f224789da59f83729208b92dba0503e2894b3f48ed04b20de1ba49374b1cd26f0c87e8e5ab79e817258135e3be2c171f3f396
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SSDEEP
12288:v6l/7FpnaeoQbRLBYdunMCayql4YcQD+AgJbAWgjbgpQ:CDna43YAKl4Yci+AggEpQ
Malware Config
Extracted
C:\odt\DECRYPT-FILES.html
Signatures
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Maze
Ransomware family also known as ChaCha.
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Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Drops startup file 4 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\DECRYPT-FILES.html e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\0cn7s.dat e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\DECRYPT-FILES.html e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\0cn7s.dat e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2132103209-3755304320-2959162027-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\\\123456789.bmp" e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 3888 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 3888 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 1768 wmic.exe Token: SeSecurityPrivilege 1768 wmic.exe Token: SeTakeOwnershipPrivilege 1768 wmic.exe Token: SeLoadDriverPrivilege 1768 wmic.exe Token: SeSystemProfilePrivilege 1768 wmic.exe Token: SeSystemtimePrivilege 1768 wmic.exe Token: SeProfSingleProcessPrivilege 1768 wmic.exe Token: SeIncBasePriorityPrivilege 1768 wmic.exe Token: SeCreatePagefilePrivilege 1768 wmic.exe Token: SeBackupPrivilege 1768 wmic.exe Token: SeRestorePrivilege 1768 wmic.exe Token: SeShutdownPrivilege 1768 wmic.exe Token: SeDebugPrivilege 1768 wmic.exe Token: SeSystemEnvironmentPrivilege 1768 wmic.exe Token: SeRemoteShutdownPrivilege 1768 wmic.exe Token: SeUndockPrivilege 1768 wmic.exe Token: SeManageVolumePrivilege 1768 wmic.exe Token: 33 1768 wmic.exe Token: 34 1768 wmic.exe Token: 35 1768 wmic.exe Token: 36 1768 wmic.exe Token: SeIncreaseQuotaPrivilege 1768 wmic.exe Token: SeSecurityPrivilege 1768 wmic.exe Token: SeTakeOwnershipPrivilege 1768 wmic.exe Token: SeLoadDriverPrivilege 1768 wmic.exe Token: SeSystemProfilePrivilege 1768 wmic.exe Token: SeSystemtimePrivilege 1768 wmic.exe Token: SeProfSingleProcessPrivilege 1768 wmic.exe Token: SeIncBasePriorityPrivilege 1768 wmic.exe Token: SeCreatePagefilePrivilege 1768 wmic.exe Token: SeBackupPrivilege 1768 wmic.exe Token: SeRestorePrivilege 1768 wmic.exe Token: SeShutdownPrivilege 1768 wmic.exe Token: SeDebugPrivilege 1768 wmic.exe Token: SeSystemEnvironmentPrivilege 1768 wmic.exe Token: SeRemoteShutdownPrivilege 1768 wmic.exe Token: SeUndockPrivilege 1768 wmic.exe Token: SeManageVolumePrivilege 1768 wmic.exe Token: 33 1768 wmic.exe Token: 34 1768 wmic.exe Token: 35 1768 wmic.exe Token: 36 1768 wmic.exe Token: SeBackupPrivilege 2016 vssvc.exe Token: SeRestorePrivilege 2016 vssvc.exe Token: SeAuditPrivilege 2016 vssvc.exe Token: SeIncreaseQuotaPrivilege 3636 wmic.exe Token: SeSecurityPrivilege 3636 wmic.exe Token: SeTakeOwnershipPrivilege 3636 wmic.exe Token: SeLoadDriverPrivilege 3636 wmic.exe Token: SeSystemProfilePrivilege 3636 wmic.exe Token: SeSystemtimePrivilege 3636 wmic.exe Token: SeProfSingleProcessPrivilege 3636 wmic.exe Token: SeIncBasePriorityPrivilege 3636 wmic.exe Token: SeCreatePagefilePrivilege 3636 wmic.exe Token: SeBackupPrivilege 3636 wmic.exe Token: SeRestorePrivilege 3636 wmic.exe Token: SeShutdownPrivilege 3636 wmic.exe Token: SeDebugPrivilege 3636 wmic.exe Token: SeSystemEnvironmentPrivilege 3636 wmic.exe Token: SeRemoteShutdownPrivilege 3636 wmic.exe Token: SeUndockPrivilege 3636 wmic.exe Token: SeManageVolumePrivilege 3636 wmic.exe Token: 33 3636 wmic.exe Token: 34 3636 wmic.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 3888 wrote to memory of 1768 3888 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 93 PID 3888 wrote to memory of 1768 3888 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 93 PID 3888 wrote to memory of 3636 3888 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 99 PID 3888 wrote to memory of 3636 3888 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 99 -
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
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C:\Users\Admin\AppData\Local\Temp\e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe"C:\Users\Admin\AppData\Local\Temp\e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe"1⤵
- Drops startup file
- Sets desktop wallpaper using registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3888 -
C:\Windows\system32\wbem\wmic.exe"C:\wjp\..\Windows\e\..\system32\lde\p\ncd\..\..\..\wbem\dvdb\x\..\..\wmic.exe" shadowcopy delete2⤵
- Suspicious use of AdjustPrivilegeToken
PID:1768
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C:\Windows\system32\wbem\wmic.exe"C:\f\u\..\..\Windows\ysiev\..\system32\x\..\wbem\s\y\kwlx\..\..\..\wmic.exe" shadowcopy delete2⤵
- Suspicious use of AdjustPrivilegeToken
PID:3636
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2016
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C:\Windows\system32\AUDIODG.EXEC:\Windows\system32\AUDIODG.EXE 0x478 0x4f41⤵PID:1188
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Roaming\Microsoft\Speech\Files\UserLexicons\SP_718DD6D0D4B64D2A9C8594C25AC248D7.dat
Filesize940B
MD553eaa102b291030af57273fcb85c959f
SHA1a698236073e44bba6b35c83ce6c40d6c6a5b28e1
SHA256667460d01c8e897883afb641bedc98c2f5f9f3204a902930908a8c9af36274b1
SHA512a296442f003a82ebd60683808817a17c26bb9c15d0c06efb2b76f7dad53120b794972599a92b2e96607ea7d2f0b77419a89d600536c390cbf6e4addfbb5e6232
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Filesize
6KB
MD5d2b581885b59453c0e6aa9b986b67e56
SHA165d89899a585320b53cc5f0e476faaddc89de3d3
SHA256478e69c4c75cd9ae7fa45858f368fa85ab9918df1967eddcd8f258621b05d399
SHA5120f5cd3875239a29bfbdee3434e4ed6300580d6e07c0c0c53b3c3ea8f3d514531cc856f465dfef829275b2fbc056191fc43fa87a402414db2eb22d9683a6496f6