Analysis
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max time kernel
59s -
max time network
62s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
21-02-2024 23:46
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
F:\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 2 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\wkng25a.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-1-5-21-406356229-2805545415-1236085040-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\\\123456789.bmp" e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 3044 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 2520 wmic.exe Token: SeSecurityPrivilege 2520 wmic.exe Token: SeTakeOwnershipPrivilege 2520 wmic.exe Token: SeLoadDriverPrivilege 2520 wmic.exe Token: SeSystemProfilePrivilege 2520 wmic.exe Token: SeSystemtimePrivilege 2520 wmic.exe Token: SeProfSingleProcessPrivilege 2520 wmic.exe Token: SeIncBasePriorityPrivilege 2520 wmic.exe Token: SeCreatePagefilePrivilege 2520 wmic.exe Token: SeBackupPrivilege 2520 wmic.exe Token: SeRestorePrivilege 2520 wmic.exe Token: SeShutdownPrivilege 2520 wmic.exe Token: SeDebugPrivilege 2520 wmic.exe Token: SeSystemEnvironmentPrivilege 2520 wmic.exe Token: SeRemoteShutdownPrivilege 2520 wmic.exe Token: SeUndockPrivilege 2520 wmic.exe Token: SeManageVolumePrivilege 2520 wmic.exe Token: 33 2520 wmic.exe Token: 34 2520 wmic.exe Token: 35 2520 wmic.exe Token: SeIncreaseQuotaPrivilege 2520 wmic.exe Token: SeSecurityPrivilege 2520 wmic.exe Token: SeTakeOwnershipPrivilege 2520 wmic.exe Token: SeLoadDriverPrivilege 2520 wmic.exe Token: SeSystemProfilePrivilege 2520 wmic.exe Token: SeSystemtimePrivilege 2520 wmic.exe Token: SeProfSingleProcessPrivilege 2520 wmic.exe Token: SeIncBasePriorityPrivilege 2520 wmic.exe Token: SeCreatePagefilePrivilege 2520 wmic.exe Token: SeBackupPrivilege 2520 wmic.exe Token: SeRestorePrivilege 2520 wmic.exe Token: SeShutdownPrivilege 2520 wmic.exe Token: SeDebugPrivilege 2520 wmic.exe Token: SeSystemEnvironmentPrivilege 2520 wmic.exe Token: SeRemoteShutdownPrivilege 2520 wmic.exe Token: SeUndockPrivilege 2520 wmic.exe Token: SeManageVolumePrivilege 2520 wmic.exe Token: 33 2520 wmic.exe Token: 34 2520 wmic.exe Token: 35 2520 wmic.exe Token: SeBackupPrivilege 2404 vssvc.exe Token: SeRestorePrivilege 2404 vssvc.exe Token: SeAuditPrivilege 2404 vssvc.exe Token: SeIncreaseQuotaPrivilege 1692 wmic.exe Token: SeSecurityPrivilege 1692 wmic.exe Token: SeTakeOwnershipPrivilege 1692 wmic.exe Token: SeLoadDriverPrivilege 1692 wmic.exe Token: SeSystemProfilePrivilege 1692 wmic.exe Token: SeSystemtimePrivilege 1692 wmic.exe Token: SeProfSingleProcessPrivilege 1692 wmic.exe Token: SeIncBasePriorityPrivilege 1692 wmic.exe Token: SeCreatePagefilePrivilege 1692 wmic.exe Token: SeBackupPrivilege 1692 wmic.exe Token: SeRestorePrivilege 1692 wmic.exe Token: SeShutdownPrivilege 1692 wmic.exe Token: SeDebugPrivilege 1692 wmic.exe Token: SeSystemEnvironmentPrivilege 1692 wmic.exe Token: SeRemoteShutdownPrivilege 1692 wmic.exe Token: SeUndockPrivilege 1692 wmic.exe Token: SeManageVolumePrivilege 1692 wmic.exe Token: 33 1692 wmic.exe Token: 34 1692 wmic.exe Token: 35 1692 wmic.exe Token: SeIncreaseQuotaPrivilege 1692 wmic.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 3044 wrote to memory of 2520 3044 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 28 PID 3044 wrote to memory of 2520 3044 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 28 PID 3044 wrote to memory of 2520 3044 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 28 PID 3044 wrote to memory of 2520 3044 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 28 PID 3044 wrote to memory of 1692 3044 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 34 PID 3044 wrote to memory of 1692 3044 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 34 PID 3044 wrote to memory of 1692 3044 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 34 PID 3044 wrote to memory of 1692 3044 e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe 34 -
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:3044 -
C:\Windows\system32\wbem\wmic.exe"C:\k\bodip\etnp\..\..\..\Windows\qx\..\system32\v\argb\..\..\wbem\m\..\wmic.exe" shadowcopy delete2⤵
- Suspicious use of AdjustPrivilegeToken
PID:2520
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C:\Windows\system32\wbem\wmic.exe"C:\c\xi\..\..\Windows\r\eha\..\..\system32\d\lvxgr\..\..\wbem\aaj\gxr\..\..\wmic.exe" shadowcopy delete2⤵
- Suspicious use of AdjustPrivilegeToken
PID:1692
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2404
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C:\Windows\SysWOW64\DllHost.exeC:\Windows\SysWOW64\DllHost.exe /Processid:{3F6B5E16-092A-41ED-930B-0B4125D91D4E}1⤵PID:1976
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Roaming\Microsoft\Speech\Files\UserLexicons\SP_C37F1071A4D648A6A05DFCE80ADAB2B9.dat
Filesize940B
MD5a08e0a57be0fb91ede3367e0960e92c2
SHA1f94a14461c70b7f6e654b86feb0ca2dc78e0672f
SHA256b5752d6fb530881328c21f573210359eeacfc4f10bfb7b9299f5e837ee6f7d33
SHA512ec5aec043d53cd913adc724380dce1e0cd2205e66995e02858938a5882e1cfc048891b552a27f8c5aeaf1893388e368c21173d3c00d2f7e9533b191c0fbccb4f
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Filesize
6KB
MD5bdd5fbf25b7c599a283885a5ff3f99ba
SHA1a8917c147e86b6ea985d02d9b9508924d4608a80
SHA25648e8c22465e490a8c77816333a57900b6d8b486fbcf8009e15b0b0386fb5cdcb
SHA5127b54740928fd564175a0d5d9d948a1ad98d2f3480f479b2368832d4527c6efa33c8cf0f3bee124e609e1d1d98116fff1b8ba42972e1cd1a243bc04263de18f66