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Analysis
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max time kernel
150s -
max time network
143s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
21/09/2024, 01:29
Static task
static1
Behavioral task
behavioral1
Sample
4ef702a13b87f44dcdc149ba50fc0a334192c57018ccc1d846d19d8c4646fc93.exe
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
4ef702a13b87f44dcdc149ba50fc0a334192c57018ccc1d846d19d8c4646fc93.exe
Resource
win10v2004-20240802-en
General
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Target
4ef702a13b87f44dcdc149ba50fc0a334192c57018ccc1d846d19d8c4646fc93.exe
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Size
239KB
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MD5
58a5c8b03f4f14c3fdfeb1e73cf72ac8
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SHA1
fd35c9c55012cc6871812cc985dbdb436ccb0fac
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SHA256
4ef702a13b87f44dcdc149ba50fc0a334192c57018ccc1d846d19d8c4646fc93
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SHA512
3e18a44e6c113d8f7c975bae6b57137524c15ebe802462c8be8da94b917341fdb4654aa51d9f5846978e827ace1ed521b1da6a33f1200c203e4ac1f9e4cec639
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SSDEEP
3072:hsXRmUIMitiMQose27vc+Eld+xZp2vPRL1tT06zJoxAWBcKpSP//dwR1l9B4hT5:GR5IuMQoseGk7RZBGxAycKpSPX2pU3
Malware Config
Signatures
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Modifies WinLogon for persistence 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe, C:\\Users\\Admin\\AppData\\Local\\_foldernamelocalappdata_\\tar32.exe" tar32.exe -
Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" tar32.exe -
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
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Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation 4ef702a13b87f44dcdc149ba50fc0a334192c57018ccc1d846d19d8c4646fc93.exe Key value queried \REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation tar32.exe -
Executes dropped EXE 3 IoCs
pid Process 3792 tar32.exe 3692 tar32.exe 2412 tar32.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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Adds Run key to start application 2 TTPs 3 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\*tar32 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\4ef702a13b87f44dcdc149ba50fc0a334192c57018ccc1d846d19d8c4646fc93.exe" 4ef702a13b87f44dcdc149ba50fc0a334192c57018ccc1d846d19d8c4646fc93.exe Set value (str) \REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\tar32 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\4ef702a13b87f44dcdc149ba50fc0a334192c57018ccc1d846d19d8c4646fc93.exe" 4ef702a13b87f44dcdc149ba50fc0a334192c57018ccc1d846d19d8c4646fc93.exe Set value (str) \REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\*QWRtaW4= = "C:\\Users\\Admin\\AppData\\Local\\_foldernamelocalappdata_\\tar32.exe" tar32.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
flow ioc 13 pastebin.com 15 pastebin.com -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 3792 set thread context of 4456 3792 tar32.exe 95 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language InstallUtil.exe -
Delays execution with timeout.exe 1 IoCs
pid Process 4940 timeout.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 2688 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe 3792 tar32.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 3792 tar32.exe Token: SeDebugPrivilege 4456 InstallUtil.exe -
Suspicious use of WriteProcessMemory 18 IoCs
description pid Process procid_target PID 1636 wrote to memory of 3792 1636 4ef702a13b87f44dcdc149ba50fc0a334192c57018ccc1d846d19d8c4646fc93.exe 82 PID 1636 wrote to memory of 3792 1636 4ef702a13b87f44dcdc149ba50fc0a334192c57018ccc1d846d19d8c4646fc93.exe 82 PID 1636 wrote to memory of 2648 1636 4ef702a13b87f44dcdc149ba50fc0a334192c57018ccc1d846d19d8c4646fc93.exe 83 PID 1636 wrote to memory of 2648 1636 4ef702a13b87f44dcdc149ba50fc0a334192c57018ccc1d846d19d8c4646fc93.exe 83 PID 1636 wrote to memory of 2104 1636 4ef702a13b87f44dcdc149ba50fc0a334192c57018ccc1d846d19d8c4646fc93.exe 85 PID 1636 wrote to memory of 2104 1636 4ef702a13b87f44dcdc149ba50fc0a334192c57018ccc1d846d19d8c4646fc93.exe 85 PID 2104 wrote to memory of 4940 2104 cmd.exe 87 PID 2104 wrote to memory of 4940 2104 cmd.exe 87 PID 3792 wrote to memory of 2688 3792 tar32.exe 90 PID 3792 wrote to memory of 2688 3792 tar32.exe 90 PID 3792 wrote to memory of 4456 3792 tar32.exe 95 PID 3792 wrote to memory of 4456 3792 tar32.exe 95 PID 3792 wrote to memory of 4456 3792 tar32.exe 95 PID 3792 wrote to memory of 4456 3792 tar32.exe 95 PID 3792 wrote to memory of 4456 3792 tar32.exe 95 PID 3792 wrote to memory of 4456 3792 tar32.exe 95 PID 3792 wrote to memory of 4456 3792 tar32.exe 95 PID 3792 wrote to memory of 4456 3792 tar32.exe 95 -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Users\Admin\AppData\Local\Temp\4ef702a13b87f44dcdc149ba50fc0a334192c57018ccc1d846d19d8c4646fc93.exe"C:\Users\Admin\AppData\Local\Temp\4ef702a13b87f44dcdc149ba50fc0a334192c57018ccc1d846d19d8c4646fc93.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1636 -
C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\tar32.exe"C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\tar32.exe"2⤵
- Modifies WinLogon for persistence
- Modifies visiblity of hidden/system files in Explorer
- Checks computer location settings
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3792 -
C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /tn Admin /tr "\"C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\tar32.exe\" arguments" /sc MINUTE /mo 13⤵
- Scheduled Task/Job: Scheduled Task
PID:2688
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\??\c:\windows\microsoft.net\framework\v2.0.50727\InstallUtil.exe"c:\windows\microsoft.net\framework\v2.0.50727\\InstallUtil.exe" C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\tar32.exe3⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:4456
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe"2⤵PID:2648
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 5 && del "C:\Users\Admin\AppData\Local\Temp\4ef702a13b87f44dcdc149ba50fc0a334192c57018ccc1d846d19d8c4646fc93.exe" && del "C:\Users\Admin\AppData\Local\Temp\4ef702a13b87f44dcdc149ba50fc0a334192c57018ccc1d846d19d8c4646fc93.exe.config"2⤵
- Suspicious use of WriteProcessMemory
PID:2104 -
C:\Windows\system32\timeout.exetimeout /t 53⤵
- Delays execution with timeout.exe
PID:4940
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C:\Windows\system32\wbem\WmiApSrv.exeC:\Windows\system32\wbem\WmiApSrv.exe1⤵PID:4732
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C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\tar32.exeC:\Users\Admin\AppData\Local\_foldernamelocalappdata_\tar32.exe arguments1⤵
- Executes dropped EXE
PID:3692
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C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\tar32.exeC:\Users\Admin\AppData\Local\_foldernamelocalappdata_\tar32.exe arguments1⤵
- Executes dropped EXE
PID:2412
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Defense Evasion
Hide Artifacts
1Hidden Files and Directories
1Modify Registry
3Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
595B
MD55446caf843683ea0aab610c729c40ab1
SHA16df96e9c6c90843766b0fde8cec5e3a955291e74
SHA256f7dbd089564c22c13483b867392a7bd1f9b49f8e0b089e2cc7bd7bfbf62c6329
SHA512488e2b8750ff820e3fbdcbb9201abddfc6c8ccc3e7cc29962a05c2313ea862eddbf4e0a49ab6a5029aa4d9c137daf2623f1b34e4dcb896269e6edae8276148ff
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Filesize
239KB
MD510860ad27272f544285317b0500f02e9
SHA1994fea72955f8d4e0f1b02b81869a548da01365d
SHA25689df658f9bde6db339dfc184d52835de5684f429813a6802c3988e6fd3990ca5
SHA512ded5d65e528743c209e5f94b04abef5998192883f485957fdf12925eb8e3dfe51acdeeed2b22bf5f17aacf27d16675634c7360364deea9ea15b30a7086635d0d
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Filesize
1KB
MD5dd3d04c365984b4ec57a80503f81fddf
SHA1c55fbcb61818e47dac9aae465faff91f0805bd7c
SHA25640a59ca9744dc3d4647f246b2dc553f37f8095418c1b48a9bd94cdb5c03dbc5c
SHA5120dd459def2abe9e3f0d1251049a0755c63f7dd3d85e91dba272c3f479f2578e3f3f2379e1cd6913190f7f596af721201eb5d9423ab28aed72bde5cd3cac7f785