Analysis
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max time kernel
89s -
max time network
159s -
platform
windows10-2004_x64 -
resource
win10v2004-20220721-en -
resource tags
arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system -
submitted
26-07-2022 20:48
Static task
static1
Behavioral task
behavioral1
Sample
Document.pdf.scr
Resource
win7-20220718-en
Behavioral task
behavioral2
Sample
Document.pdf.scr
Resource
win10v2004-20220721-en
General
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Target
Document.pdf.scr
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Size
700.0MB
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MD5
66313350525d00444319e42f88c9a320
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SHA1
5e54b8d600254f67fc03cad68a00a7f2a9d89b77
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SHA256
00770e297ae5fdcaa0f235de9bee97309553bc89c955c47141e21f6fabdd55c7
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SHA512
a16611adba248ea831a4c25b6d0d46e20793f2f3500a13f29129414756c24ad209118b93e3b435e229e41ab92b01d52bfe31add86c0ed8b6e7469aafff594e2b
Malware Config
Extracted
redline
2
62.204.41.139:25190
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auth_value
f3af3290196bb8fa91c4ccc1d3fcb28f
Signatures
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RedLine
RedLine Stealer is a malware family written in C#, first appearing in early 2020.
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RedLine payload 1 IoCs
Processes:
resource yara_rule behavioral2/memory/4812-143-0x0000000000400000-0x0000000000420000-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-1-5-21-1101907861-274115917-2188613224-1000\Control Panel\International\Geo\Nation Document.pdf.scr -
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
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Suspicious use of SetThreadContext 1 IoCs
Processes:
Document.pdf.scrdescription pid process target process PID 544 set thread context of 4812 544 Document.pdf.scr AppLaunch.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 10 IoCs
Processes:
Document.pdf.scrpowershell.exeAppLaunch.exepid process 544 Document.pdf.scr 4896 powershell.exe 4896 powershell.exe 544 Document.pdf.scr 544 Document.pdf.scr 544 Document.pdf.scr 544 Document.pdf.scr 544 Document.pdf.scr 544 Document.pdf.scr 4812 AppLaunch.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
Document.pdf.scrpowershell.exeAppLaunch.exedescription pid process Token: SeDebugPrivilege 544 Document.pdf.scr Token: SeDebugPrivilege 4896 powershell.exe Token: SeDebugPrivilege 4812 AppLaunch.exe -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
Document.pdf.scrdescription pid process target process PID 544 wrote to memory of 4896 544 Document.pdf.scr powershell.exe PID 544 wrote to memory of 4896 544 Document.pdf.scr powershell.exe PID 544 wrote to memory of 4896 544 Document.pdf.scr powershell.exe PID 544 wrote to memory of 3320 544 Document.pdf.scr AppLaunch.exe PID 544 wrote to memory of 3320 544 Document.pdf.scr AppLaunch.exe PID 544 wrote to memory of 3320 544 Document.pdf.scr AppLaunch.exe PID 544 wrote to memory of 4812 544 Document.pdf.scr AppLaunch.exe PID 544 wrote to memory of 4812 544 Document.pdf.scr AppLaunch.exe PID 544 wrote to memory of 4812 544 Document.pdf.scr AppLaunch.exe PID 544 wrote to memory of 4812 544 Document.pdf.scr AppLaunch.exe PID 544 wrote to memory of 4812 544 Document.pdf.scr AppLaunch.exe PID 544 wrote to memory of 4812 544 Document.pdf.scr AppLaunch.exe PID 544 wrote to memory of 4812 544 Document.pdf.scr AppLaunch.exe PID 544 wrote to memory of 4812 544 Document.pdf.scr AppLaunch.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Document.pdf.scr"C:\Users\Admin\AppData\Local\Temp\Document.pdf.scr" /S1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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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
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe2⤵
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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
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/544-131-0x0000000005D30000-0x00000000062D4000-memory.dmpFilesize
5.6MB
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memory/544-132-0x0000000006B90000-0x0000000006BB2000-memory.dmpFilesize
136KB
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memory/544-130-0x0000000000C50000-0x0000000000E76000-memory.dmpFilesize
2.1MB
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memory/3320-141-0x0000000000000000-mapping.dmp
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memory/4812-148-0x0000000008770000-0x00000000087E6000-memory.dmpFilesize
472KB
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memory/4812-147-0x0000000007B20000-0x0000000007B5C000-memory.dmpFilesize
240KB
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memory/4812-153-0x0000000005D30000-0x0000000005D80000-memory.dmpFilesize
320KB
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memory/4812-152-0x0000000009B90000-0x000000000A0BC000-memory.dmpFilesize
5.2MB
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memory/4812-151-0x0000000009490000-0x0000000009652000-memory.dmpFilesize
1.8MB
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memory/4812-150-0x0000000008850000-0x000000000886E000-memory.dmpFilesize
120KB
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memory/4812-149-0x0000000008890000-0x0000000008922000-memory.dmpFilesize
584KB
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memory/4812-146-0x0000000007BF0000-0x0000000007CFA000-memory.dmpFilesize
1.0MB
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memory/4812-142-0x0000000000000000-mapping.dmp
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memory/4812-143-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/4812-144-0x0000000006200000-0x0000000006818000-memory.dmpFilesize
6.1MB
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memory/4812-145-0x0000000007AC0000-0x0000000007AD2000-memory.dmpFilesize
72KB
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memory/4896-134-0x0000000000DC0000-0x0000000000DF6000-memory.dmpFilesize
216KB
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memory/4896-135-0x0000000004F50000-0x0000000005578000-memory.dmpFilesize
6.2MB
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memory/4896-133-0x0000000000000000-mapping.dmp
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memory/4896-140-0x0000000006040000-0x000000000605A000-memory.dmpFilesize
104KB
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memory/4896-139-0x00000000073F0000-0x0000000007A6A000-memory.dmpFilesize
6.5MB
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memory/4896-138-0x0000000005B70000-0x0000000005B8E000-memory.dmpFilesize
120KB
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memory/4896-137-0x0000000004DE0000-0x0000000004E46000-memory.dmpFilesize
408KB
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memory/4896-136-0x0000000004D70000-0x0000000004DD6000-memory.dmpFilesize
408KB