Analysis
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max time kernel
30s -
max time network
26s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
02-11-2020 09:15
Static task
static1
Behavioral task
behavioral1
Sample
48a7b45d8b21337b1c63394fa34b2dfa.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
48a7b45d8b21337b1c63394fa34b2dfa.exe
Resource
win10v20201028
General
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Target
48a7b45d8b21337b1c63394fa34b2dfa.exe
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Size
667KB
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MD5
48a7b45d8b21337b1c63394fa34b2dfa
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SHA1
815c1c6e843a1c8b9ead4e78038792e731b0cedf
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SHA256
2224e77a950a10ddf527d06e3083641ef929afcf2eb7d195f749f404a511f4c2
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SHA512
280436837a57cb92b1f10b929828e94064f1df816cf6b9ffe77e8274f96a05e4d56d8ef1f7b56c0d84e0b1e2e603955adb55afa7257a6ab295d427eb2571eb7f
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/536-18-0x00000000002D0000-0x00000000002F4000-memory.dmp family_redline behavioral1/memory/536-19-0x0000000000380000-0x00000000003A2000-memory.dmp family_redline behavioral1/memory/1900-24-0x0000000002320000-0x0000000002344000-memory.dmp family_redline behavioral1/memory/1900-25-0x0000000003E50000-0x0000000003E72000-memory.dmp family_redline -
Executes dropped EXE 2 IoCs
Processes:
bestof.exebestofd.exepid process 396 bestof.exe 1900 bestofd.exe -
Loads dropped DLL 2 IoCs
Processes:
48a7b45d8b21337b1c63394fa34b2dfa.exepid process 1892 48a7b45d8b21337b1c63394fa34b2dfa.exe 1892 48a7b45d8b21337b1c63394fa34b2dfa.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 9 ip-api.com 16 checkip.amazonaws.com -
Suspicious use of SetThreadContext 1 IoCs
Processes:
bestof.exedescription pid process target process PID 396 set thread context of 536 396 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:
48a7b45d8b21337b1c63394fa34b2dfa.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 48a7b45d8b21337b1c63394fa34b2dfa.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 48a7b45d8b21337b1c63394fa34b2dfa.exe -
Processes:
48a7b45d8b21337b1c63394fa34b2dfa.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13 48a7b45d8b21337b1c63394fa34b2dfa.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13\Blob = 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 48a7b45d8b21337b1c63394fa34b2dfa.exe -
Runs ping.exe 1 TTPs 2 IoCs
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Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
AddInProcess32.exebestofd.exepid process 536 AddInProcess32.exe 536 AddInProcess32.exe 1900 bestofd.exe 1900 bestofd.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
bestof.exeAddInProcess32.exebestofd.exedescription pid process Token: SeDebugPrivilege 396 bestof.exe Token: SeDebugPrivilege 536 AddInProcess32.exe Token: SeDebugPrivilege 1900 bestofd.exe -
Suspicious use of WriteProcessMemory 34 IoCs
Processes:
48a7b45d8b21337b1c63394fa34b2dfa.exebestof.exeAddInProcess32.execmd.exebestofd.execmd.exedescription pid process target process PID 1892 wrote to memory of 396 1892 48a7b45d8b21337b1c63394fa34b2dfa.exe bestof.exe PID 1892 wrote to memory of 396 1892 48a7b45d8b21337b1c63394fa34b2dfa.exe bestof.exe PID 1892 wrote to memory of 396 1892 48a7b45d8b21337b1c63394fa34b2dfa.exe bestof.exe PID 1892 wrote to memory of 396 1892 48a7b45d8b21337b1c63394fa34b2dfa.exe bestof.exe PID 1892 wrote to memory of 1900 1892 48a7b45d8b21337b1c63394fa34b2dfa.exe bestofd.exe PID 1892 wrote to memory of 1900 1892 48a7b45d8b21337b1c63394fa34b2dfa.exe bestofd.exe PID 1892 wrote to memory of 1900 1892 48a7b45d8b21337b1c63394fa34b2dfa.exe bestofd.exe PID 1892 wrote to memory of 1900 1892 48a7b45d8b21337b1c63394fa34b2dfa.exe bestofd.exe PID 396 wrote to memory of 536 396 bestof.exe AddInProcess32.exe PID 396 wrote to memory of 536 396 bestof.exe AddInProcess32.exe PID 396 wrote to memory of 536 396 bestof.exe AddInProcess32.exe PID 396 wrote to memory of 536 396 bestof.exe AddInProcess32.exe PID 396 wrote to memory of 536 396 bestof.exe AddInProcess32.exe PID 396 wrote to memory of 536 396 bestof.exe AddInProcess32.exe PID 396 wrote to memory of 536 396 bestof.exe AddInProcess32.exe PID 396 wrote to memory of 536 396 bestof.exe AddInProcess32.exe PID 396 wrote to memory of 536 396 bestof.exe AddInProcess32.exe PID 396 wrote to memory of 536 396 bestof.exe AddInProcess32.exe PID 536 wrote to memory of 744 536 AddInProcess32.exe cmd.exe PID 536 wrote to memory of 744 536 AddInProcess32.exe cmd.exe PID 536 wrote to memory of 744 536 AddInProcess32.exe cmd.exe PID 536 wrote to memory of 744 536 AddInProcess32.exe cmd.exe PID 744 wrote to memory of 816 744 cmd.exe PING.EXE PID 744 wrote to memory of 816 744 cmd.exe PING.EXE PID 744 wrote to memory of 816 744 cmd.exe PING.EXE PID 744 wrote to memory of 816 744 cmd.exe PING.EXE PID 1900 wrote to memory of 1720 1900 bestofd.exe cmd.exe PID 1900 wrote to memory of 1720 1900 bestofd.exe cmd.exe PID 1900 wrote to memory of 1720 1900 bestofd.exe cmd.exe PID 1900 wrote to memory of 1720 1900 bestofd.exe cmd.exe PID 1720 wrote to memory of 756 1720 cmd.exe PING.EXE PID 1720 wrote to memory of 756 1720 cmd.exe PING.EXE PID 1720 wrote to memory of 756 1720 cmd.exe PING.EXE PID 1720 wrote to memory of 756 1720 cmd.exe PING.EXE
Processes
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C:\Users\Admin\AppData\Local\Temp\48a7b45d8b21337b1c63394fa34b2dfa.exe"C:\Users\Admin\AppData\Local\Temp\48a7b45d8b21337b1c63394fa34b2dfa.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
Loading Replay Monitor...
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/396-8-0x0000000001310000-0x0000000001311000-memory.dmpFilesize
4KB
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memory/396-4-0x0000000000000000-mapping.dmp
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memory/396-7-0x0000000074080000-0x000000007476E000-memory.dmpFilesize
6.9MB
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memory/536-15-0x0000000000400000-0x0000000000436000-memory.dmpFilesize
216KB
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memory/536-16-0x0000000002100000-0x0000000002111000-memory.dmpFilesize
68KB
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memory/536-19-0x0000000000380000-0x00000000003A2000-memory.dmpFilesize
136KB
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memory/536-18-0x00000000002D0000-0x00000000002F4000-memory.dmpFilesize
144KB
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memory/536-13-0x0000000000400000-0x0000000000436000-memory.dmpFilesize
216KB
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memory/536-14-0x000000000040CD2F-mapping.dmp
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memory/536-17-0x0000000074080000-0x000000007476E000-memory.dmpFilesize
6.9MB
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memory/744-26-0x0000000000000000-mapping.dmp
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memory/756-29-0x0000000000000000-mapping.dmp
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memory/816-27-0x0000000000000000-mapping.dmp
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memory/1692-2-0x000007FEF7730000-0x000007FEF79AA000-memory.dmpFilesize
2.5MB
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memory/1720-28-0x0000000000000000-mapping.dmp
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memory/1892-0-0x00000000002B4000-0x00000000002C5000-memory.dmpFilesize
68KB
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memory/1892-1-0x00000000025F0000-0x0000000002601000-memory.dmpFilesize
68KB
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memory/1900-20-0x00000000024C9000-0x00000000024CA000-memory.dmpFilesize
4KB
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memory/1900-24-0x0000000002320000-0x0000000002344000-memory.dmpFilesize
144KB
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memory/1900-25-0x0000000003E50000-0x0000000003E72000-memory.dmpFilesize
136KB
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memory/1900-23-0x0000000074080000-0x000000007476E000-memory.dmpFilesize
6.9MB
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memory/1900-22-0x0000000003CC0000-0x0000000003CD1000-memory.dmpFilesize
68KB
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memory/1900-21-0x0000000003CC0000-0x0000000003CD1000-memory.dmpFilesize
68KB
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memory/1900-11-0x0000000000000000-mapping.dmp