Analysis
-
max time kernel
159s -
max time network
192s -
platform
windows7_x64 -
resource
win7-en-20211208 -
submitted
16-02-2022 23:00
Static task
static1
Behavioral task
behavioral1
Sample
4ff7eb34e69bc60cb01eea3098f88f4b729d4158b14939b012247b341452a75c.exe
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
4ff7eb34e69bc60cb01eea3098f88f4b729d4158b14939b012247b341452a75c.exe
Resource
win10v2004-en-20220113
General
-
Target
4ff7eb34e69bc60cb01eea3098f88f4b729d4158b14939b012247b341452a75c.exe
-
Size
513KB
-
MD5
26328ef6a8d0476111b18a14fb84227b
-
SHA1
0386e019f5d1b581f75ba8a91dd204a0ffb7c8e1
-
SHA256
4ff7eb34e69bc60cb01eea3098f88f4b729d4158b14939b012247b341452a75c
-
SHA512
c74660fff3e5e82fba0bc57955f0a68f350eec7aebb40a0322ea81818ee61859a20cf47e94a35d531b98b83cca852a45e5e9ecc2ffce531b14c145f88432d97f
Malware Config
Extracted
C:\DECRYPT-FILES.html
<b>[email protected]</b>
Signatures
-
Maze
Ransomware family also known as ChaCha.
-
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
-
Modifies extensions of user files 16 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File renamed C:\Users\Admin\Pictures\ResolveExit.tiff => C:\Users\Admin\Pictures\ResolveExit.tiff.vuqfmO 4ff7eb34e69bc60cb01eea3098f88f4b729d4158b14939b012247b341452a75c.exe File opened for modification C:\Users\Admin\Pictures\UnlockCheckpoint.tiff 4ff7eb34e69bc60cb01eea3098f88f4b729d4158b14939b012247b341452a75c.exe File renamed C:\Users\Admin\Pictures\BackupResolve.png => C:\Users\Admin\Pictures\BackupResolve.png.zVfu 4ff7eb34e69bc60cb01eea3098f88f4b729d4158b14939b012247b341452a75c.exe File renamed C:\Users\Admin\Pictures\InstallConvertTo.raw => C:\Users\Admin\Pictures\InstallConvertTo.raw.qh5c5 4ff7eb34e69bc60cb01eea3098f88f4b729d4158b14939b012247b341452a75c.exe File renamed C:\Users\Admin\Pictures\MeasureStep.raw => C:\Users\Admin\Pictures\MeasureStep.raw.qh5c5 4ff7eb34e69bc60cb01eea3098f88f4b729d4158b14939b012247b341452a75c.exe File renamed C:\Users\Admin\Pictures\UnlockCheckpoint.tiff => C:\Users\Admin\Pictures\UnlockCheckpoint.tiff.eOfRZh 4ff7eb34e69bc60cb01eea3098f88f4b729d4158b14939b012247b341452a75c.exe File opened for modification C:\Users\Admin\Pictures\WatchSet.tiff 4ff7eb34e69bc60cb01eea3098f88f4b729d4158b14939b012247b341452a75c.exe File renamed C:\Users\Admin\Pictures\WatchSet.tiff => C:\Users\Admin\Pictures\WatchSet.tiff.4mVcLgP 4ff7eb34e69bc60cb01eea3098f88f4b729d4158b14939b012247b341452a75c.exe File opened for modification C:\Users\Admin\Pictures\CompleteRestart.tiff 4ff7eb34e69bc60cb01eea3098f88f4b729d4158b14939b012247b341452a75c.exe File renamed C:\Users\Admin\Pictures\CompleteRestart.tiff => C:\Users\Admin\Pictures\CompleteRestart.tiff.zVfu 4ff7eb34e69bc60cb01eea3098f88f4b729d4158b14939b012247b341452a75c.exe File renamed C:\Users\Admin\Pictures\PushRemove.tiff => C:\Users\Admin\Pictures\PushRemove.tiff.vuqfmO 4ff7eb34e69bc60cb01eea3098f88f4b729d4158b14939b012247b341452a75c.exe File renamed C:\Users\Admin\Pictures\StopSet.tiff => C:\Users\Admin\Pictures\StopSet.tiff.eOfRZh 4ff7eb34e69bc60cb01eea3098f88f4b729d4158b14939b012247b341452a75c.exe File renamed C:\Users\Admin\Pictures\JoinDeny.crw => C:\Users\Admin\Pictures\JoinDeny.crw.qh5c5 4ff7eb34e69bc60cb01eea3098f88f4b729d4158b14939b012247b341452a75c.exe File opened for modification C:\Users\Admin\Pictures\PushRemove.tiff 4ff7eb34e69bc60cb01eea3098f88f4b729d4158b14939b012247b341452a75c.exe File opened for modification C:\Users\Admin\Pictures\ResolveExit.tiff 4ff7eb34e69bc60cb01eea3098f88f4b729d4158b14939b012247b341452a75c.exe File opened for modification C:\Users\Admin\Pictures\StopSet.tiff 4ff7eb34e69bc60cb01eea3098f88f4b729d4158b14939b012247b341452a75c.exe -
Drops startup file 2 IoCs
description ioc Process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\sgt07.dat 4ff7eb34e69bc60cb01eea3098f88f4b729d4158b14939b012247b341452a75c.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\DECRYPT-FILES.html 4ff7eb34e69bc60cb01eea3098f88f4b729d4158b14939b012247b341452a75c.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
-
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\\\123456789.bmp" 4ff7eb34e69bc60cb01eea3098f88f4b729d4158b14939b012247b341452a75c.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 1720 4ff7eb34e69bc60cb01eea3098f88f4b729d4158b14939b012247b341452a75c.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 1540 wmic.exe Token: SeSecurityPrivilege 1540 wmic.exe Token: SeTakeOwnershipPrivilege 1540 wmic.exe Token: SeLoadDriverPrivilege 1540 wmic.exe Token: SeSystemProfilePrivilege 1540 wmic.exe Token: SeSystemtimePrivilege 1540 wmic.exe Token: SeProfSingleProcessPrivilege 1540 wmic.exe Token: SeIncBasePriorityPrivilege 1540 wmic.exe Token: SeCreatePagefilePrivilege 1540 wmic.exe Token: SeBackupPrivilege 1540 wmic.exe Token: SeRestorePrivilege 1540 wmic.exe Token: SeShutdownPrivilege 1540 wmic.exe Token: SeDebugPrivilege 1540 wmic.exe Token: SeSystemEnvironmentPrivilege 1540 wmic.exe Token: SeRemoteShutdownPrivilege 1540 wmic.exe Token: SeUndockPrivilege 1540 wmic.exe Token: SeManageVolumePrivilege 1540 wmic.exe Token: 33 1540 wmic.exe Token: 34 1540 wmic.exe Token: 35 1540 wmic.exe Token: SeIncreaseQuotaPrivilege 1540 wmic.exe Token: SeSecurityPrivilege 1540 wmic.exe Token: SeTakeOwnershipPrivilege 1540 wmic.exe Token: SeLoadDriverPrivilege 1540 wmic.exe Token: SeSystemProfilePrivilege 1540 wmic.exe Token: SeSystemtimePrivilege 1540 wmic.exe Token: SeProfSingleProcessPrivilege 1540 wmic.exe Token: SeIncBasePriorityPrivilege 1540 wmic.exe Token: SeCreatePagefilePrivilege 1540 wmic.exe Token: SeBackupPrivilege 1540 wmic.exe Token: SeRestorePrivilege 1540 wmic.exe Token: SeShutdownPrivilege 1540 wmic.exe Token: SeDebugPrivilege 1540 wmic.exe Token: SeSystemEnvironmentPrivilege 1540 wmic.exe Token: SeRemoteShutdownPrivilege 1540 wmic.exe Token: SeUndockPrivilege 1540 wmic.exe Token: SeManageVolumePrivilege 1540 wmic.exe Token: 33 1540 wmic.exe Token: 34 1540 wmic.exe Token: 35 1540 wmic.exe Token: SeBackupPrivilege 336 vssvc.exe Token: SeRestorePrivilege 336 vssvc.exe Token: SeAuditPrivilege 336 vssvc.exe Token: SeIncreaseQuotaPrivilege 220 wmic.exe Token: SeSecurityPrivilege 220 wmic.exe Token: SeTakeOwnershipPrivilege 220 wmic.exe Token: SeLoadDriverPrivilege 220 wmic.exe Token: SeSystemProfilePrivilege 220 wmic.exe Token: SeSystemtimePrivilege 220 wmic.exe Token: SeProfSingleProcessPrivilege 220 wmic.exe Token: SeIncBasePriorityPrivilege 220 wmic.exe Token: SeCreatePagefilePrivilege 220 wmic.exe Token: SeBackupPrivilege 220 wmic.exe Token: SeRestorePrivilege 220 wmic.exe Token: SeShutdownPrivilege 220 wmic.exe Token: SeDebugPrivilege 220 wmic.exe Token: SeSystemEnvironmentPrivilege 220 wmic.exe Token: SeRemoteShutdownPrivilege 220 wmic.exe Token: SeUndockPrivilege 220 wmic.exe Token: SeManageVolumePrivilege 220 wmic.exe Token: 33 220 wmic.exe Token: 34 220 wmic.exe Token: 35 220 wmic.exe Token: SeIncreaseQuotaPrivilege 220 wmic.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 1720 wrote to memory of 1540 1720 4ff7eb34e69bc60cb01eea3098f88f4b729d4158b14939b012247b341452a75c.exe 27 PID 1720 wrote to memory of 1540 1720 4ff7eb34e69bc60cb01eea3098f88f4b729d4158b14939b012247b341452a75c.exe 27 PID 1720 wrote to memory of 1540 1720 4ff7eb34e69bc60cb01eea3098f88f4b729d4158b14939b012247b341452a75c.exe 27 PID 1720 wrote to memory of 1540 1720 4ff7eb34e69bc60cb01eea3098f88f4b729d4158b14939b012247b341452a75c.exe 27 PID 1720 wrote to memory of 220 1720 4ff7eb34e69bc60cb01eea3098f88f4b729d4158b14939b012247b341452a75c.exe 38 PID 1720 wrote to memory of 220 1720 4ff7eb34e69bc60cb01eea3098f88f4b729d4158b14939b012247b341452a75c.exe 38 PID 1720 wrote to memory of 220 1720 4ff7eb34e69bc60cb01eea3098f88f4b729d4158b14939b012247b341452a75c.exe 38 PID 1720 wrote to memory of 220 1720 4ff7eb34e69bc60cb01eea3098f88f4b729d4158b14939b012247b341452a75c.exe 38
Processes
-
C:\Users\Admin\AppData\Local\Temp\4ff7eb34e69bc60cb01eea3098f88f4b729d4158b14939b012247b341452a75c.exe"C:\Users\Admin\AppData\Local\Temp\4ff7eb34e69bc60cb01eea3098f88f4b729d4158b14939b012247b341452a75c.exe"1⤵
- Modifies extensions of user files
- Drops startup file
- Sets desktop wallpaper using registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1720 -
C:\Windows\system32\wbem\wmic.exe"C:\vdbk\u\..\..\Windows\srvoa\ej\p\..\..\..\system32\vagx\hlvhj\..\..\wbem\x\..\wmic.exe" shadowcopy delete2⤵
- Suspicious use of AdjustPrivilegeToken
PID:1540
-
-
C:\Windows\system32\wbem\wmic.exe"C:\cjo\apg\..\..\Windows\wsxnw\..\system32\nsl\fgs\..\..\wbem\ll\..\wmic.exe" shadowcopy delete2⤵
- Suspicious use of AdjustPrivilegeToken
PID:220
-
-
C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:336