Windows 7 deprecation
Windows 7 will be removed from tria.ge on 2025-03-31
Analysis
-
max time kernel
121s -
max time network
126s -
platform
windows7_x64 -
resource
win7-20241010-en -
resource tags
arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system -
submitted
29/10/2024, 18:06
Behavioral task
behavioral1
Sample
dumbhumans.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
dumbhumans.exe
Resource
win10v2004-20241007-en
General
-
Target
dumbhumans.exe
-
Size
23KB
-
MD5
c6eb3aad7a5ba437d2e39c44d645aed2
-
SHA1
87b24045539b8db9ead35e462aef513602743ded
-
SHA256
78529452630857c2edc60a55dd41771617d0c9e99d2cf276e39a5288f55160c8
-
SHA512
cede2ff722843666b0f8cfcc3aa12f1f946b430d0db813afff326a1b4d9df9568e6843913bd9ee8497f312b3cad67f21e538786196e443239d2b8eb5efe92127
-
SSDEEP
384:Q3Mg/bqo2ucVzt2eaWCzpgDKF+98uJEr91CKxb+uteA:uqo2F52eanpgDKNyEr9xxb5eA
Malware Config
Extracted
C:\Users\Admin\Documents\read_it.txt
chaos
Signatures
-
Chaos
Ransomware family first seen in June 2021.
-
Chaos Ransomware 3 IoCs
resource yara_rule behavioral1/memory/1732-1-0x00000000000C0000-0x00000000000CC000-memory.dmp family_chaos behavioral1/files/0x000a000000012262-5.dat family_chaos behavioral1/memory/524-7-0x0000000001030000-0x000000000103C000-memory.dmp family_chaos -
Chaos family
-
Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
-
Drops startup file 3 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.url svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini svchost.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\read_it.txt svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 524 svchost.exe -
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
-
Drops desktop.ini file(s) 34 IoCs
description ioc Process File opened for modification C:\Users\Admin\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links for United States\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\Sample Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\Sample Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-3692679935-4019334568-335155002-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\Sample Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\desktop.ini svchost.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Interacts with shadow copies 3 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 1728 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 2092 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 524 svchost.exe -
Suspicious behavior: EnumeratesProcesses 7 IoCs
pid Process 1732 dumbhumans.exe 1732 dumbhumans.exe 1732 dumbhumans.exe 524 svchost.exe 524 svchost.exe 524 svchost.exe 524 svchost.exe -
Suspicious use of AdjustPrivilegeToken 45 IoCs
description pid Process Token: SeDebugPrivilege 1732 dumbhumans.exe Token: SeDebugPrivilege 524 svchost.exe Token: SeBackupPrivilege 620 vssvc.exe Token: SeRestorePrivilege 620 vssvc.exe Token: SeAuditPrivilege 620 vssvc.exe Token: SeIncreaseQuotaPrivilege 1524 WMIC.exe Token: SeSecurityPrivilege 1524 WMIC.exe Token: SeTakeOwnershipPrivilege 1524 WMIC.exe Token: SeLoadDriverPrivilege 1524 WMIC.exe Token: SeSystemProfilePrivilege 1524 WMIC.exe Token: SeSystemtimePrivilege 1524 WMIC.exe Token: SeProfSingleProcessPrivilege 1524 WMIC.exe Token: SeIncBasePriorityPrivilege 1524 WMIC.exe Token: SeCreatePagefilePrivilege 1524 WMIC.exe Token: SeBackupPrivilege 1524 WMIC.exe Token: SeRestorePrivilege 1524 WMIC.exe Token: SeShutdownPrivilege 1524 WMIC.exe Token: SeDebugPrivilege 1524 WMIC.exe Token: SeSystemEnvironmentPrivilege 1524 WMIC.exe Token: SeRemoteShutdownPrivilege 1524 WMIC.exe Token: SeUndockPrivilege 1524 WMIC.exe Token: SeManageVolumePrivilege 1524 WMIC.exe Token: 33 1524 WMIC.exe Token: 34 1524 WMIC.exe Token: 35 1524 WMIC.exe Token: SeIncreaseQuotaPrivilege 1524 WMIC.exe Token: SeSecurityPrivilege 1524 WMIC.exe Token: SeTakeOwnershipPrivilege 1524 WMIC.exe Token: SeLoadDriverPrivilege 1524 WMIC.exe Token: SeSystemProfilePrivilege 1524 WMIC.exe Token: SeSystemtimePrivilege 1524 WMIC.exe Token: SeProfSingleProcessPrivilege 1524 WMIC.exe Token: SeIncBasePriorityPrivilege 1524 WMIC.exe Token: SeCreatePagefilePrivilege 1524 WMIC.exe Token: SeBackupPrivilege 1524 WMIC.exe Token: SeRestorePrivilege 1524 WMIC.exe Token: SeShutdownPrivilege 1524 WMIC.exe Token: SeDebugPrivilege 1524 WMIC.exe Token: SeSystemEnvironmentPrivilege 1524 WMIC.exe Token: SeRemoteShutdownPrivilege 1524 WMIC.exe Token: SeUndockPrivilege 1524 WMIC.exe Token: SeManageVolumePrivilege 1524 WMIC.exe Token: 33 1524 WMIC.exe Token: 34 1524 WMIC.exe Token: 35 1524 WMIC.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 1732 wrote to memory of 524 1732 dumbhumans.exe 30 PID 1732 wrote to memory of 524 1732 dumbhumans.exe 30 PID 1732 wrote to memory of 524 1732 dumbhumans.exe 30 PID 524 wrote to memory of 2024 524 svchost.exe 33 PID 524 wrote to memory of 2024 524 svchost.exe 33 PID 524 wrote to memory of 2024 524 svchost.exe 33 PID 2024 wrote to memory of 1728 2024 cmd.exe 35 PID 2024 wrote to memory of 1728 2024 cmd.exe 35 PID 2024 wrote to memory of 1728 2024 cmd.exe 35 PID 2024 wrote to memory of 1524 2024 cmd.exe 39 PID 2024 wrote to memory of 1524 2024 cmd.exe 39 PID 2024 wrote to memory of 1524 2024 cmd.exe 39 PID 524 wrote to memory of 2092 524 svchost.exe 41 PID 524 wrote to memory of 2092 524 svchost.exe 41 PID 524 wrote to memory of 2092 524 svchost.exe 41 -
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
-
C:\Users\Admin\AppData\Local\Temp\dumbhumans.exe"C:\Users\Admin\AppData\Local\Temp\dumbhumans.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1732 -
C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"2⤵
- Drops startup file
- Executes dropped EXE
- Drops desktop.ini file(s)
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:524 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2024 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:1728
-
-
C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:1524
-
-
-
C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\read_it.txt3⤵
- Opens file in notepad (likely ransom note)
PID:2092
-
-
-
C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:620
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
23KB
MD5c6eb3aad7a5ba437d2e39c44d645aed2
SHA187b24045539b8db9ead35e462aef513602743ded
SHA25678529452630857c2edc60a55dd41771617d0c9e99d2cf276e39a5288f55160c8
SHA512cede2ff722843666b0f8cfcc3aa12f1f946b430d0db813afff326a1b4d9df9568e6843913bd9ee8497f312b3cad67f21e538786196e443239d2b8eb5efe92127
-
Filesize
965B
MD58405ca5488c5d8321e070794dd06f485
SHA1104adc71cd3ca7924ccdc36a8d607eb8b45f0bf8
SHA256e4cf6fbdc212d4b92cf3503cc1c38dd72eed77221b28e1e43b0fa5e8128dc2bf
SHA512b24b0e14b09a1e7b796292b550b367e8e1bde7be9fcb4c7715f70bdb7b519d0fd6b2a8e780fdb71c219d2cb1818cc2856678c93f6e648e588236f4247ccd8e96