Analysis
-
max time kernel
47s -
max time network
66s -
platform
windows10-2004_x64 -
resource
win10v2004-20220721-en -
resource tags
arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system -
submitted
22-07-2022 03:49
Static task
static1
Behavioral task
behavioral1
Sample
Document.pdf/Document.pdf.scr
Resource
win7-20220718-en
Behavioral task
behavioral2
Sample
Document.pdf/Document.pdf.scr
Resource
win10v2004-20220721-en
General
-
Target
Document.pdf/Document.pdf.scr
-
Size
700.0MB
-
MD5
ea7b8236ca438995b2ee7604043fc20c
-
SHA1
4543d6fbe467c8a17b962e0c19a25fd59d82ded8
-
SHA256
954e35d28e5938766eb6922e08a4e26d5ed892a1578027374d945efbe0d927e3
-
SHA512
22a1173def10e7c74fbcef024127f87635a508044c4fbbfa2f4e32b05823b5fc9fa166645851dbaa32c926a735745ca727dc0183a72fd9f3cc222f9f07395a7a
Malware Config
Extracted
redline
1
62.204.41.139:25190
-
auth_value
2c239ad7c28c8eab1f9626557bb9457a
Signatures
-
RedLine
RedLine Stealer is a malware family written in C#, first appearing in early 2020.
-
RedLine payload 1 IoCs
Processes:
resource yara_rule behavioral2/memory/2152-141-0x0000000000400000-0x0000000000420000-memory.dmp family_redline -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
Document.pdf.scrdescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2660308776-3705150086-26593515-1000\Control Panel\International\Geo\Nation Document.pdf.scr -
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
-
Suspicious use of SetThreadContext 1 IoCs
Processes:
Document.pdf.scrdescription pid process target process PID 1048 set thread context of 2152 1048 Document.pdf.scr AppLaunch.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
-
Suspicious behavior: EnumeratesProcesses 5 IoCs
Processes:
powershell.exeDocument.pdf.scrAppLaunch.exepid process 2324 powershell.exe 2324 powershell.exe 1048 Document.pdf.scr 1048 Document.pdf.scr 2152 AppLaunch.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
Document.pdf.scrpowershell.exeAppLaunch.exedescription pid process Token: SeDebugPrivilege 1048 Document.pdf.scr Token: SeDebugPrivilege 2324 powershell.exe Token: SeDebugPrivilege 2152 AppLaunch.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
Document.pdf.scrdescription pid process target process PID 1048 wrote to memory of 2324 1048 Document.pdf.scr powershell.exe PID 1048 wrote to memory of 2324 1048 Document.pdf.scr powershell.exe PID 1048 wrote to memory of 2324 1048 Document.pdf.scr powershell.exe PID 1048 wrote to memory of 2152 1048 Document.pdf.scr AppLaunch.exe PID 1048 wrote to memory of 2152 1048 Document.pdf.scr AppLaunch.exe PID 1048 wrote to memory of 2152 1048 Document.pdf.scr AppLaunch.exe PID 1048 wrote to memory of 2152 1048 Document.pdf.scr AppLaunch.exe PID 1048 wrote to memory of 2152 1048 Document.pdf.scr AppLaunch.exe PID 1048 wrote to memory of 2152 1048 Document.pdf.scr AppLaunch.exe PID 1048 wrote to memory of 2152 1048 Document.pdf.scr AppLaunch.exe PID 1048 wrote to memory of 2152 1048 Document.pdf.scr AppLaunch.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\Document.pdf\Document.pdf.scr"C:\Users\Admin\AppData\Local\Temp\Document.pdf\Document.pdf.scr" /S1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1048 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMgAwAA==2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2324
-
-
C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2152
-