Analysis
-
max time kernel
146s -
max time network
148s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
13-08-2024 00:07
Static task
static1
Behavioral task
behavioral1
Sample
bf3bb84cd01c19a5e1a00c9cf975ad8e5dcee257c43087768760a317b7dca2c3.exe
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
bf3bb84cd01c19a5e1a00c9cf975ad8e5dcee257c43087768760a317b7dca2c3.exe
Resource
win10v2004-20240802-en
General
-
Target
bf3bb84cd01c19a5e1a00c9cf975ad8e5dcee257c43087768760a317b7dca2c3.exe
-
Size
9.7MB
-
MD5
b0dc9d6835d6f7709491abf442fd72f5
-
SHA1
e9a3be12a05c077ceaf1adc4f58f9e76863e9e63
-
SHA256
bf3bb84cd01c19a5e1a00c9cf975ad8e5dcee257c43087768760a317b7dca2c3
-
SHA512
87ba3a6a79644f7c224c558594c5d3bc5a60878b006b06fec019d4bc66ee3542e24ce6b3e1e4f17b4c9c8858d5612384bc4cbadc84f2258f37970db60628977b
-
SSDEEP
196608:OPbB2M/X7E2/swFyCBMoM2j+tOnXYOu/4Djxp:Y2M/XY4swFBBMGytOnG/4D1p
Malware Config
Extracted
asyncrat
0.5.8
Default
95.211.208.153:6606
95.211.208.153:7707
95.211.208.153:8808
5512.sytes.net:6606
5512.sytes.net:7707
5512.sytes.net:8808
Llg9a02PERRO
-
delay
3
-
install
false
-
install_folder
%AppData%
Signatures
-
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-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation bf3bb84cd01c19a5e1a00c9cf975ad8e5dcee257c43087768760a317b7dca2c3.exe -
Executes dropped EXE 2 IoCs
pid Process 860 Zcsbaibfhun.exe 428 Set-up.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Duyiyilycdc = "C:\\Users\\Admin\\AppData\\Roaming\\Duyiyilycdc.exe" Zcsbaibfhun.exe -
Obfuscated Files or Information: Command Obfuscation 1 TTPs
Adversaries may obfuscate content during command execution to impede detection.
-
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 860 set thread context of 1424 860 Zcsbaibfhun.exe 94 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
System Location Discovery: System Language Discovery 1 TTPs 5 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 powershell.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Set-up.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language InstallUtil.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language bf3bb84cd01c19a5e1a00c9cf975ad8e5dcee257c43087768760a317b7dca2c3.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Zcsbaibfhun.exe -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION Set-up.exe Set value (int) \REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION\Set-up.exe = "11001" Set-up.exe -
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\5FB7EE0633E259DBAD0C4C9AE6D38F1A61C7DC25 Set-up.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\5FB7EE0633E259DBAD0C4C9AE6D38F1A61C7DC25\Blob = 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 Set-up.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\5FB7EE0633E259DBAD0C4C9AE6D38F1A61C7DC25\Blob = 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 Set-up.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 3964 powershell.exe 3964 powershell.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 3964 powershell.exe Token: SeDebugPrivilege 860 Zcsbaibfhun.exe Token: SeDebugPrivilege 860 Zcsbaibfhun.exe Token: SeDebugPrivilege 1424 InstallUtil.exe -
Suspicious use of WriteProcessMemory 17 IoCs
description pid Process procid_target PID 2484 wrote to memory of 3964 2484 bf3bb84cd01c19a5e1a00c9cf975ad8e5dcee257c43087768760a317b7dca2c3.exe 88 PID 2484 wrote to memory of 3964 2484 bf3bb84cd01c19a5e1a00c9cf975ad8e5dcee257c43087768760a317b7dca2c3.exe 88 PID 2484 wrote to memory of 3964 2484 bf3bb84cd01c19a5e1a00c9cf975ad8e5dcee257c43087768760a317b7dca2c3.exe 88 PID 2484 wrote to memory of 860 2484 bf3bb84cd01c19a5e1a00c9cf975ad8e5dcee257c43087768760a317b7dca2c3.exe 90 PID 2484 wrote to memory of 860 2484 bf3bb84cd01c19a5e1a00c9cf975ad8e5dcee257c43087768760a317b7dca2c3.exe 90 PID 2484 wrote to memory of 860 2484 bf3bb84cd01c19a5e1a00c9cf975ad8e5dcee257c43087768760a317b7dca2c3.exe 90 PID 2484 wrote to memory of 428 2484 bf3bb84cd01c19a5e1a00c9cf975ad8e5dcee257c43087768760a317b7dca2c3.exe 91 PID 2484 wrote to memory of 428 2484 bf3bb84cd01c19a5e1a00c9cf975ad8e5dcee257c43087768760a317b7dca2c3.exe 91 PID 2484 wrote to memory of 428 2484 bf3bb84cd01c19a5e1a00c9cf975ad8e5dcee257c43087768760a317b7dca2c3.exe 91 PID 860 wrote to memory of 1424 860 Zcsbaibfhun.exe 94 PID 860 wrote to memory of 1424 860 Zcsbaibfhun.exe 94 PID 860 wrote to memory of 1424 860 Zcsbaibfhun.exe 94 PID 860 wrote to memory of 1424 860 Zcsbaibfhun.exe 94 PID 860 wrote to memory of 1424 860 Zcsbaibfhun.exe 94 PID 860 wrote to memory of 1424 860 Zcsbaibfhun.exe 94 PID 860 wrote to memory of 1424 860 Zcsbaibfhun.exe 94 PID 860 wrote to memory of 1424 860 Zcsbaibfhun.exe 94
Processes
-
C:\Users\Admin\AppData\Local\Temp\bf3bb84cd01c19a5e1a00c9cf975ad8e5dcee257c43087768760a317b7dca2c3.exe"C:\Users\Admin\AppData\Local\Temp\bf3bb84cd01c19a5e1a00c9cf975ad8e5dcee257c43087768760a317b7dca2c3.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2484 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "PAAjAGQAdQBjACMAPgBBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAAPAAjAGgAbQB4ACMAPgAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEAAKAAkAGUAbgB2ADoAVQBzAGUAcgBQAHIAbwBmAGkAbABlACwAJABlAG4AdgA6AFMAeQBzAHQAZQBtAEQAcgBpAHYAZQApACAAPAAjAGkAZwB6ACMAPgAgAC0ARgBvAHIAYwBlACAAPAAjAHkAcwBzACMAPgA="2⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3964
-
-
C:\Users\Admin\AppData\Local\Temp\Zcsbaibfhun.exe"C:\Users\Admin\AppData\Local\Temp\Zcsbaibfhun.exe"2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:860 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"3⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:1424
-
-
-
C:\Users\Admin\AppData\Local\Temp\Set-up.exe"C:\Users\Admin\AppData\Local\Temp\Set-up.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Modifies system certificate store
PID:428
-
Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Defense Evasion
Modify Registry
3Obfuscated Files or Information
1Command Obfuscation
1Subvert Trust Controls
1Install Root Certificate
1Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
7.3MB
MD50d9e0caef3acad368792e4484b345eba
SHA1f5024d10c036f6ae575c9ea21e567b57498a0df6
SHA25679eec3e5bb9282f7ebab09a8566558e8a52934df174f129677a4771d5383a3db
SHA5120a5fa7f74f4c9984f9b1a9e36d2adfe9bb06a7b9128878766a85e462ea370fd864285a902b68297922ecfd7cf5d0bd6955f51f1abc1db980768ae7bf1a8b1e00
-
Filesize
2.4MB
MD55870c41c149fdd038336b2a1b2103e2f
SHA1d3efce3cc94fb928113481aee8d58cdeea24a708
SHA2569b489f300c3797e9d343a47ecd96e83646a61b02c28b5e68071d26a5a666c929
SHA5129fdbc2281e54dc640e8b2598faedabffe70f3fc739d88a603c0d43a8496fc08b07fcebd63fabd11d69c3393edb28eec867ab505a5c694ebe17632d04fe8952a7
-
Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82