Analysis
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max time kernel
31s -
max time network
28s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
02-11-2020 09:08
Static task
static1
Behavioral task
behavioral1
Sample
557e20f7eb9ae27ba43e2452a766e465.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
557e20f7eb9ae27ba43e2452a766e465.exe
Resource
win10v20201028
General
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Target
557e20f7eb9ae27ba43e2452a766e465.exe
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Size
667KB
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MD5
557e20f7eb9ae27ba43e2452a766e465
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SHA1
3b6e9753bfbc837e710ae071c342e9d45e325072
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SHA256
467343e673ecbdd5597b4e4e0b0439dd4ad9b8c00471334d4df0d0e2decabd6d
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SHA512
794b4e367dc79468b188301061200449419befe3d96e5563a8b2ad0e1beb9173fa380718246f1899e5ade52227a917ce47b16af3246f2bddc9d5cb85e7b4d584
Malware Config
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 4 IoCs
Processes:
resource yara_rule behavioral1/memory/740-18-0x0000000000210000-0x0000000000234000-memory.dmp family_redline behavioral1/memory/740-19-0x0000000000440000-0x0000000000462000-memory.dmp family_redline behavioral1/memory/1712-24-0x0000000003BC0000-0x0000000003BE4000-memory.dmp family_redline behavioral1/memory/1712-25-0x0000000003ED0000-0x0000000003EF2000-memory.dmp family_redline -
Executes dropped EXE 2 IoCs
Processes:
bestof.exebestofd.exepid process 1572 bestof.exe 1712 bestofd.exe -
Loads dropped DLL 2 IoCs
Processes:
557e20f7eb9ae27ba43e2452a766e465.exepid process 288 557e20f7eb9ae27ba43e2452a766e465.exe 288 557e20f7eb9ae27ba43e2452a766e465.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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Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Legitimate hosting services abused for malware hosting/C2 1 TTPs
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Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 16 checkip.amazonaws.com 10 ip-api.com -
Suspicious use of SetThreadContext 1 IoCs
Processes:
bestof.exedescription pid process target process PID 1572 set thread context of 740 1572 bestof.exe AddInProcess32.exe -
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
557e20f7eb9ae27ba43e2452a766e465.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 557e20f7eb9ae27ba43e2452a766e465.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 557e20f7eb9ae27ba43e2452a766e465.exe -
Processes:
557e20f7eb9ae27ba43e2452a766e465.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13 557e20f7eb9ae27ba43e2452a766e465.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13\Blob = 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 557e20f7eb9ae27ba43e2452a766e465.exe -
Runs ping.exe 1 TTPs 2 IoCs
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Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
AddInProcess32.exebestofd.exepid process 740 AddInProcess32.exe 1712 bestofd.exe 1712 bestofd.exe 740 AddInProcess32.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
bestof.exeAddInProcess32.exebestofd.exedescription pid process Token: SeDebugPrivilege 1572 bestof.exe Token: SeDebugPrivilege 740 AddInProcess32.exe Token: SeDebugPrivilege 1712 bestofd.exe -
Suspicious use of WriteProcessMemory 34 IoCs
Processes:
557e20f7eb9ae27ba43e2452a766e465.exebestof.exeAddInProcess32.execmd.exebestofd.execmd.exedescription pid process target process PID 288 wrote to memory of 1572 288 557e20f7eb9ae27ba43e2452a766e465.exe bestof.exe PID 288 wrote to memory of 1572 288 557e20f7eb9ae27ba43e2452a766e465.exe bestof.exe PID 288 wrote to memory of 1572 288 557e20f7eb9ae27ba43e2452a766e465.exe bestof.exe PID 288 wrote to memory of 1572 288 557e20f7eb9ae27ba43e2452a766e465.exe bestof.exe PID 288 wrote to memory of 1712 288 557e20f7eb9ae27ba43e2452a766e465.exe bestofd.exe PID 288 wrote to memory of 1712 288 557e20f7eb9ae27ba43e2452a766e465.exe bestofd.exe PID 288 wrote to memory of 1712 288 557e20f7eb9ae27ba43e2452a766e465.exe bestofd.exe PID 288 wrote to memory of 1712 288 557e20f7eb9ae27ba43e2452a766e465.exe bestofd.exe PID 1572 wrote to memory of 740 1572 bestof.exe AddInProcess32.exe PID 1572 wrote to memory of 740 1572 bestof.exe AddInProcess32.exe PID 1572 wrote to memory of 740 1572 bestof.exe AddInProcess32.exe PID 1572 wrote to memory of 740 1572 bestof.exe AddInProcess32.exe PID 1572 wrote to memory of 740 1572 bestof.exe AddInProcess32.exe PID 1572 wrote to memory of 740 1572 bestof.exe AddInProcess32.exe PID 1572 wrote to memory of 740 1572 bestof.exe AddInProcess32.exe PID 1572 wrote to memory of 740 1572 bestof.exe AddInProcess32.exe PID 1572 wrote to memory of 740 1572 bestof.exe AddInProcess32.exe PID 1572 wrote to memory of 740 1572 bestof.exe AddInProcess32.exe PID 740 wrote to memory of 288 740 AddInProcess32.exe cmd.exe PID 740 wrote to memory of 288 740 AddInProcess32.exe cmd.exe PID 740 wrote to memory of 288 740 AddInProcess32.exe cmd.exe PID 740 wrote to memory of 288 740 AddInProcess32.exe cmd.exe PID 288 wrote to memory of 1996 288 cmd.exe PING.EXE PID 288 wrote to memory of 1996 288 cmd.exe PING.EXE PID 288 wrote to memory of 1996 288 cmd.exe PING.EXE PID 288 wrote to memory of 1996 288 cmd.exe PING.EXE PID 1712 wrote to memory of 776 1712 bestofd.exe cmd.exe PID 1712 wrote to memory of 776 1712 bestofd.exe cmd.exe PID 1712 wrote to memory of 776 1712 bestofd.exe cmd.exe PID 1712 wrote to memory of 776 1712 bestofd.exe cmd.exe PID 776 wrote to memory of 1928 776 cmd.exe PING.EXE PID 776 wrote to memory of 1928 776 cmd.exe PING.EXE PID 776 wrote to memory of 1928 776 cmd.exe PING.EXE PID 776 wrote to memory of 1928 776 cmd.exe PING.EXE
Processes
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C:\Users\Admin\AppData\Local\Temp\557e20f7eb9ae27ba43e2452a766e465.exe"C:\Users\Admin\AppData\Local\Temp\557e20f7eb9ae27ba43e2452a766e465.exe"1⤵
- Loads dropped DLL
- Checks processor information in registry
- Modifies system certificate store
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\gfersesurity\bestof.exebestof.exe2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"cmd.exe" /C ping 127.0.0.1 -n 3 > nul & del ""4⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\PING.EXEping 127.0.0.1 -n 35⤵
- Runs ping.exe
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C:\Users\Admin\AppData\Roaming\gfersesurity\bestofd.exebestofd.exe2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"cmd.exe" /C ping 127.0.0.1 -n 3 > nul & del ""3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\PING.EXEping 127.0.0.1 -n 34⤵
- Runs ping.exe
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Roaming\gfersesurity\bestof.exeMD5
b77a1d58626a5d4a77202afbf717accb
SHA11a37bf11e2b75384785d05780fe17fe1167bfbb1
SHA256a0a1952f947eaea5f54da2c343da0dc0ef5cd7bc58fe27f1dbf4e7199e757a13
SHA512d12789afcdf0b6dc4dfd5c944c56466c3305b1f87670a038401e22a27ee8980b11a6039e73c4729c731dfd241fdb84c7c850c6ee2cd04bdfac6d5f5b2c8fff26
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C:\Users\Admin\AppData\Roaming\gfersesurity\bestof.exeMD5
b77a1d58626a5d4a77202afbf717accb
SHA11a37bf11e2b75384785d05780fe17fe1167bfbb1
SHA256a0a1952f947eaea5f54da2c343da0dc0ef5cd7bc58fe27f1dbf4e7199e757a13
SHA512d12789afcdf0b6dc4dfd5c944c56466c3305b1f87670a038401e22a27ee8980b11a6039e73c4729c731dfd241fdb84c7c850c6ee2cd04bdfac6d5f5b2c8fff26
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C:\Users\Admin\AppData\Roaming\gfersesurity\bestofd.exeMD5
72131adb0e2315281aae445db11e09a2
SHA1712ca2ebaa7d9bc9bbe18f7843954cfb0d22b08e
SHA2569ea7a66f0c3dc13ddfc6f05d95049dd7f641053a380578a12013db9f72367f65
SHA512bbc68fa0c586aaa7227da59848407672e7629e8f1289384add8638c21bab69d41495bcfc7881446b527e5aa4db14e1babc4f71dfee32b69705e6d3b64bf46a22
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\Users\Admin\AppData\Roaming\gfersesurity\bestof.exeMD5
b77a1d58626a5d4a77202afbf717accb
SHA11a37bf11e2b75384785d05780fe17fe1167bfbb1
SHA256a0a1952f947eaea5f54da2c343da0dc0ef5cd7bc58fe27f1dbf4e7199e757a13
SHA512d12789afcdf0b6dc4dfd5c944c56466c3305b1f87670a038401e22a27ee8980b11a6039e73c4729c731dfd241fdb84c7c850c6ee2cd04bdfac6d5f5b2c8fff26
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\Users\Admin\AppData\Roaming\gfersesurity\bestofd.exeMD5
72131adb0e2315281aae445db11e09a2
SHA1712ca2ebaa7d9bc9bbe18f7843954cfb0d22b08e
SHA2569ea7a66f0c3dc13ddfc6f05d95049dd7f641053a380578a12013db9f72367f65
SHA512bbc68fa0c586aaa7227da59848407672e7629e8f1289384add8638c21bab69d41495bcfc7881446b527e5aa4db14e1babc4f71dfee32b69705e6d3b64bf46a22
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memory/288-26-0x0000000000000000-mapping.dmp
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memory/288-1-0x0000000002720000-0x0000000002731000-memory.dmpFilesize
68KB
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memory/288-0-0x0000000002494000-0x00000000024A5000-memory.dmpFilesize
68KB
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memory/740-13-0x0000000000400000-0x0000000000436000-memory.dmpFilesize
216KB
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memory/740-19-0x0000000000440000-0x0000000000462000-memory.dmpFilesize
136KB
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memory/740-18-0x0000000000210000-0x0000000000234000-memory.dmpFilesize
144KB
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memory/740-14-0x000000000040CD2F-mapping.dmp
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memory/740-15-0x0000000000400000-0x0000000000436000-memory.dmpFilesize
216KB
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memory/740-16-0x0000000000C00000-0x0000000000C11000-memory.dmpFilesize
68KB
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memory/740-17-0x0000000073930000-0x000000007401E000-memory.dmpFilesize
6.9MB
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memory/776-28-0x0000000000000000-mapping.dmp
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memory/1376-2-0x000007FEF7140000-0x000007FEF73BA000-memory.dmpFilesize
2.5MB
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memory/1572-7-0x0000000073980000-0x000000007406E000-memory.dmpFilesize
6.9MB
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memory/1572-8-0x0000000000BC0000-0x0000000000BC1000-memory.dmpFilesize
4KB
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memory/1572-4-0x0000000000000000-mapping.dmp
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memory/1712-11-0x0000000000000000-mapping.dmp
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memory/1712-20-0x0000000000309000-0x000000000030A000-memory.dmpFilesize
4KB
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memory/1712-21-0x0000000003AD0000-0x0000000003AE1000-memory.dmpFilesize
68KB
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memory/1712-22-0x0000000003D30000-0x0000000003D41000-memory.dmpFilesize
68KB
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memory/1712-23-0x0000000073930000-0x000000007401E000-memory.dmpFilesize
6.9MB
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memory/1712-24-0x0000000003BC0000-0x0000000003BE4000-memory.dmpFilesize
144KB
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memory/1712-25-0x0000000003ED0000-0x0000000003EF2000-memory.dmpFilesize
136KB
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memory/1928-29-0x0000000000000000-mapping.dmp
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memory/1996-27-0x0000000000000000-mapping.dmp