Analysis
-
max time kernel
171s -
max time network
177s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
29/11/2022, 16:41
Static task
static1
Behavioral task
behavioral1
Sample
a6f5b83f25f866ded57842fc9c1a2d567fe542c5d2d29f9d143691545d0da7b1.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
a6f5b83f25f866ded57842fc9c1a2d567fe542c5d2d29f9d143691545d0da7b1.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
-
Target
a6f5b83f25f866ded57842fc9c1a2d567fe542c5d2d29f9d143691545d0da7b1.exe
-
Size
236KB
-
MD5
27cde6c347afa831938cc0b4037363fe
-
SHA1
9620e67d32655362db95cd7198b86cfcf38a7574
-
SHA256
a6f5b83f25f866ded57842fc9c1a2d567fe542c5d2d29f9d143691545d0da7b1
-
SHA512
bbfeb6c0d339807c528dc0d894a973c24fe65b410a666c4993651d041d5e89e988a39f09328e12f7f96ef6b5b0943f58ea458341136c822857388d078c710149
-
SSDEEP
3072:op9EdC7N5KCa6QQLAK2hcPRwWL12O71Z8ju6mZFxgdjYW6:mdMQL3t2G1Z8jubnxga
Score
10/10
Malware Config
Signatures
-
Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" a6f5b83f25f866ded57842fc9c1a2d567fe542c5d2d29f9d143691545d0da7b1.exe Set value (int) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" ciuujum.exe -
Executes dropped EXE 1 IoCs
pid Process 804 ciuujum.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation a6f5b83f25f866ded57842fc9c1a2d567fe542c5d2d29f9d143691545d0da7b1.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ciuujum = "C:\\Users\\Admin\\ciuujum.exe /t" ciuujum.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ciuujum = "C:\\Users\\Admin\\ciuujum.exe /v" ciuujum.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ciuujum = "C:\\Users\\Admin\\ciuujum.exe /p" ciuujum.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\ a6f5b83f25f866ded57842fc9c1a2d567fe542c5d2d29f9d143691545d0da7b1.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ciuujum = "C:\\Users\\Admin\\ciuujum.exe /b" ciuujum.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ciuujum = "C:\\Users\\Admin\\ciuujum.exe /n" ciuujum.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ciuujum = "C:\\Users\\Admin\\ciuujum.exe /m" ciuujum.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ciuujum = "C:\\Users\\Admin\\ciuujum.exe /q" ciuujum.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\ ciuujum.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ciuujum = "C:\\Users\\Admin\\ciuujum.exe /k" ciuujum.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ciuujum = "C:\\Users\\Admin\\ciuujum.exe /l" ciuujum.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ciuujum = "C:\\Users\\Admin\\ciuujum.exe /s" ciuujum.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ciuujum = "C:\\Users\\Admin\\ciuujum.exe /p" a6f5b83f25f866ded57842fc9c1a2d567fe542c5d2d29f9d143691545d0da7b1.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ciuujum = "C:\\Users\\Admin\\ciuujum.exe /y" ciuujum.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ciuujum = "C:\\Users\\Admin\\ciuujum.exe /f" ciuujum.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ciuujum = "C:\\Users\\Admin\\ciuujum.exe /i" ciuujum.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ciuujum = "C:\\Users\\Admin\\ciuujum.exe /g" ciuujum.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ciuujum = "C:\\Users\\Admin\\ciuujum.exe /w" ciuujum.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ciuujum = "C:\\Users\\Admin\\ciuujum.exe /h" ciuujum.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ciuujum = "C:\\Users\\Admin\\ciuujum.exe /r" ciuujum.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ciuujum = "C:\\Users\\Admin\\ciuujum.exe /c" ciuujum.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ciuujum = "C:\\Users\\Admin\\ciuujum.exe /a" ciuujum.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ciuujum = "C:\\Users\\Admin\\ciuujum.exe /d" ciuujum.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ciuujum = "C:\\Users\\Admin\\ciuujum.exe /x" ciuujum.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ciuujum = "C:\\Users\\Admin\\ciuujum.exe /j" ciuujum.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ciuujum = "C:\\Users\\Admin\\ciuujum.exe /z" ciuujum.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ciuujum = "C:\\Users\\Admin\\ciuujum.exe /o" ciuujum.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ciuujum = "C:\\Users\\Admin\\ciuujum.exe /u" ciuujum.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ciuujum = "C:\\Users\\Admin\\ciuujum.exe /e" ciuujum.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
-
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4936 a6f5b83f25f866ded57842fc9c1a2d567fe542c5d2d29f9d143691545d0da7b1.exe 4936 a6f5b83f25f866ded57842fc9c1a2d567fe542c5d2d29f9d143691545d0da7b1.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe 804 ciuujum.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 4936 a6f5b83f25f866ded57842fc9c1a2d567fe542c5d2d29f9d143691545d0da7b1.exe 804 ciuujum.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4936 wrote to memory of 804 4936 a6f5b83f25f866ded57842fc9c1a2d567fe542c5d2d29f9d143691545d0da7b1.exe 80 PID 4936 wrote to memory of 804 4936 a6f5b83f25f866ded57842fc9c1a2d567fe542c5d2d29f9d143691545d0da7b1.exe 80 PID 4936 wrote to memory of 804 4936 a6f5b83f25f866ded57842fc9c1a2d567fe542c5d2d29f9d143691545d0da7b1.exe 80
Processes
-
C:\Users\Admin\AppData\Local\Temp\a6f5b83f25f866ded57842fc9c1a2d567fe542c5d2d29f9d143691545d0da7b1.exe"C:\Users\Admin\AppData\Local\Temp\a6f5b83f25f866ded57842fc9c1a2d567fe542c5d2d29f9d143691545d0da7b1.exe"1⤵
- Modifies visiblity of hidden/system files in Explorer
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4936 -
C:\Users\Admin\ciuujum.exe"C:\Users\Admin\ciuujum.exe"2⤵
- Modifies visiblity of hidden/system files in Explorer
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:804
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
236KB
MD5dbe2b4ed724f0fc45c1ba83b3488b095
SHA1d6e078ed9a1fb00b46b9d1f0813281d929985e07
SHA25634b137e4f2b4e5f4169dd693450494759999fa01638db917a39ade50f5c74d22
SHA5123cfa1d937beeb99d9deb38b976323b2076b17c47e33a5a1d3a45b243a567fa78f08b8b02081902139cc31f8afd6c9ffd991645235ee979455fb090d24ea313b6
-
Filesize
236KB
MD5dbe2b4ed724f0fc45c1ba83b3488b095
SHA1d6e078ed9a1fb00b46b9d1f0813281d929985e07
SHA25634b137e4f2b4e5f4169dd693450494759999fa01638db917a39ade50f5c74d22
SHA5123cfa1d937beeb99d9deb38b976323b2076b17c47e33a5a1d3a45b243a567fa78f08b8b02081902139cc31f8afd6c9ffd991645235ee979455fb090d24ea313b6