Analysis
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max time kernel
141s -
max time network
140s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
11-11-2020 00:36
Static task
static1
Behavioral task
behavioral1
Sample
keygen-step-2.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
keygen-step-2.exe
Resource
win10v20201028
General
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Target
keygen-step-2.exe
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Size
357KB
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MD5
8c4fe67a04fab5e6fc528d80fe934d92
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SHA1
2dda7f80ae96ba0afa427b8dac4661ee2195b0ac
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SHA256
ded9ced2ef59268364eed96c2403427c486cc8799c24bb38068d4bf69c486186
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SHA512
86f0a6b357dde692f49e9718032fa3e94ee9bda78d10262a1b00f054d1d9be4fa8734c1f46e630bce5cc5aa2eee09d0d2c2d4206be9abb5b5ab0abc0d6c9f614
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/1608-16-0x0000000000400000-0x0000000000426000-memory.dmp family_redline behavioral1/memory/1608-17-0x0000000000420906-mapping.dmp family_redline behavioral1/memory/1608-19-0x0000000000400000-0x0000000000426000-memory.dmp family_redline behavioral1/memory/1608-20-0x0000000000400000-0x0000000000426000-memory.dmp family_redline -
Executes dropped EXE 2 IoCs
Processes:
25D8.tmp.exe25D8.tmp.exepid process 360 25D8.tmp.exe 1608 25D8.tmp.exe -
Deletes itself 1 IoCs
Processes:
cmd.exepid process 1356 cmd.exe -
Loads dropped DLL 2 IoCs
Processes:
keygen-step-2.exe25D8.tmp.exepid process 1068 keygen-step-2.exe 360 25D8.tmp.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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Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
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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 14 api.ipify.org 24 checkip.amazonaws.com -
Suspicious use of SetThreadContext 2 IoCs
Processes:
keygen-step-2.exe25D8.tmp.exedescription pid process target process PID 1068 set thread context of 1156 1068 keygen-step-2.exe keygen-step-2.exe PID 360 set thread context of 1608 360 25D8.tmp.exe 25D8.tmp.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
keygen-step-2.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 keygen-step-2.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString keygen-step-2.exe -
Processes:
keygen-step-2.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13 keygen-step-2.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13\Blob = 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 keygen-step-2.exe -
Runs ping.exe 1 TTPs 2 IoCs
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Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
keygen-step-2.exe25D8.tmp.exepid process 1156 keygen-step-2.exe 1608 25D8.tmp.exe 1608 25D8.tmp.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
25D8.tmp.exe25D8.tmp.exedescription pid process Token: SeDebugPrivilege 360 25D8.tmp.exe Token: SeDebugPrivilege 1608 25D8.tmp.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
keygen-step-2.exepid process 1068 keygen-step-2.exe -
Suspicious use of WriteProcessMemory 48 IoCs
Processes:
keygen-step-2.execmd.exe25D8.tmp.exe25D8.tmp.execmd.exedescription pid process target process PID 1068 wrote to memory of 360 1068 keygen-step-2.exe 25D8.tmp.exe PID 1068 wrote to memory of 360 1068 keygen-step-2.exe 25D8.tmp.exe PID 1068 wrote to memory of 360 1068 keygen-step-2.exe 25D8.tmp.exe PID 1068 wrote to memory of 360 1068 keygen-step-2.exe 25D8.tmp.exe PID 1068 wrote to memory of 360 1068 keygen-step-2.exe 25D8.tmp.exe PID 1068 wrote to memory of 360 1068 keygen-step-2.exe 25D8.tmp.exe PID 1068 wrote to memory of 360 1068 keygen-step-2.exe 25D8.tmp.exe PID 1068 wrote to memory of 1156 1068 keygen-step-2.exe keygen-step-2.exe PID 1068 wrote to memory of 1156 1068 keygen-step-2.exe keygen-step-2.exe PID 1068 wrote to memory of 1156 1068 keygen-step-2.exe keygen-step-2.exe PID 1068 wrote to memory of 1156 1068 keygen-step-2.exe keygen-step-2.exe PID 1068 wrote to memory of 1156 1068 keygen-step-2.exe keygen-step-2.exe PID 1068 wrote to memory of 1156 1068 keygen-step-2.exe keygen-step-2.exe PID 1068 wrote to memory of 1156 1068 keygen-step-2.exe keygen-step-2.exe PID 1068 wrote to memory of 1156 1068 keygen-step-2.exe keygen-step-2.exe PID 1068 wrote to memory of 1156 1068 keygen-step-2.exe keygen-step-2.exe PID 1068 wrote to memory of 1156 1068 keygen-step-2.exe keygen-step-2.exe PID 1068 wrote to memory of 1156 1068 keygen-step-2.exe keygen-step-2.exe PID 1068 wrote to memory of 1156 1068 keygen-step-2.exe keygen-step-2.exe PID 1068 wrote to memory of 1156 1068 keygen-step-2.exe keygen-step-2.exe PID 1068 wrote to memory of 1356 1068 keygen-step-2.exe cmd.exe PID 1068 wrote to memory of 1356 1068 keygen-step-2.exe cmd.exe PID 1068 wrote to memory of 1356 1068 keygen-step-2.exe cmd.exe PID 1068 wrote to memory of 1356 1068 keygen-step-2.exe cmd.exe PID 1356 wrote to memory of 1308 1356 cmd.exe PING.EXE PID 1356 wrote to memory of 1308 1356 cmd.exe PING.EXE PID 1356 wrote to memory of 1308 1356 cmd.exe PING.EXE PID 1356 wrote to memory of 1308 1356 cmd.exe PING.EXE PID 360 wrote to memory of 1608 360 25D8.tmp.exe 25D8.tmp.exe PID 360 wrote to memory of 1608 360 25D8.tmp.exe 25D8.tmp.exe PID 360 wrote to memory of 1608 360 25D8.tmp.exe 25D8.tmp.exe PID 360 wrote to memory of 1608 360 25D8.tmp.exe 25D8.tmp.exe PID 360 wrote to memory of 1608 360 25D8.tmp.exe 25D8.tmp.exe PID 360 wrote to memory of 1608 360 25D8.tmp.exe 25D8.tmp.exe PID 360 wrote to memory of 1608 360 25D8.tmp.exe 25D8.tmp.exe PID 360 wrote to memory of 1608 360 25D8.tmp.exe 25D8.tmp.exe PID 360 wrote to memory of 1608 360 25D8.tmp.exe 25D8.tmp.exe PID 360 wrote to memory of 1608 360 25D8.tmp.exe 25D8.tmp.exe PID 360 wrote to memory of 1608 360 25D8.tmp.exe 25D8.tmp.exe PID 360 wrote to memory of 1608 360 25D8.tmp.exe 25D8.tmp.exe PID 1608 wrote to memory of 928 1608 25D8.tmp.exe cmd.exe PID 1608 wrote to memory of 928 1608 25D8.tmp.exe cmd.exe PID 1608 wrote to memory of 928 1608 25D8.tmp.exe cmd.exe PID 1608 wrote to memory of 928 1608 25D8.tmp.exe cmd.exe PID 928 wrote to memory of 916 928 cmd.exe PING.EXE PID 928 wrote to memory of 916 928 cmd.exe PING.EXE PID 928 wrote to memory of 916 928 cmd.exe PING.EXE PID 928 wrote to memory of 916 928 cmd.exe PING.EXE
Processes
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C:\Users\Admin\AppData\Local\Temp\keygen-step-2.exe"C:\Users\Admin\AppData\Local\Temp\keygen-step-2.exe"1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Modifies system certificate store
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1068 -
C:\Users\Admin\AppData\Roaming\25D8.tmp.exe"C:\Users\Admin\AppData\Roaming\25D8.tmp.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:360 -
C:\Users\Admin\AppData\Roaming\25D8.tmp.exe"C:\Users\Admin\AppData\Roaming\25D8.tmp.exe"3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1608 -
C:\Windows\SysWOW64\cmd.exe"cmd.exe" /C ping 127.0.0.1 -n 3 > nul & del "C:\Users\Admin\AppData\Roaming\25D8.tmp.exe"4⤵
- Suspicious use of WriteProcessMemory
PID:928 -
C:\Windows\SysWOW64\PING.EXEping 127.0.0.1 -n 35⤵
- Runs ping.exe
PID:916 -
C:\Users\Admin\AppData\Local\Temp\keygen-step-2.exe"C:\Users\Admin\AppData\Local\Temp\keygen-step-2.exe"2⤵
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:1156 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c ping 127.0.0.1 && del "C:\Users\Admin\AppData\Local\Temp\keygen-step-2.exe" >> NUL2⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:1356 -
C:\Windows\SysWOW64\PING.EXEping 127.0.0.13⤵
- Runs ping.exe
PID:1308
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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MD5
71e27a77011a6d73b28a9403f23e39c7
SHA17e6122eb754e9c6a085ba38234c4e3e2a4ba72d5
SHA2560f1bd85289b945b02326245f1d49fe90850ec82ed1694ff193eb862bae5f492e
SHA51251ecaddcc2c19f2ec84a7843902f3c0c1ddc9c6cbf45cc1d95d468045d65bf8582c75d2a8a8192f067c4bbf1db8c3a7f20e31f1db55e02e58f1501d522e07dec
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MD5
71e27a77011a6d73b28a9403f23e39c7
SHA17e6122eb754e9c6a085ba38234c4e3e2a4ba72d5
SHA2560f1bd85289b945b02326245f1d49fe90850ec82ed1694ff193eb862bae5f492e
SHA51251ecaddcc2c19f2ec84a7843902f3c0c1ddc9c6cbf45cc1d95d468045d65bf8582c75d2a8a8192f067c4bbf1db8c3a7f20e31f1db55e02e58f1501d522e07dec
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MD5
71e27a77011a6d73b28a9403f23e39c7
SHA17e6122eb754e9c6a085ba38234c4e3e2a4ba72d5
SHA2560f1bd85289b945b02326245f1d49fe90850ec82ed1694ff193eb862bae5f492e
SHA51251ecaddcc2c19f2ec84a7843902f3c0c1ddc9c6cbf45cc1d95d468045d65bf8582c75d2a8a8192f067c4bbf1db8c3a7f20e31f1db55e02e58f1501d522e07dec
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MD5
71e27a77011a6d73b28a9403f23e39c7
SHA17e6122eb754e9c6a085ba38234c4e3e2a4ba72d5
SHA2560f1bd85289b945b02326245f1d49fe90850ec82ed1694ff193eb862bae5f492e
SHA51251ecaddcc2c19f2ec84a7843902f3c0c1ddc9c6cbf45cc1d95d468045d65bf8582c75d2a8a8192f067c4bbf1db8c3a7f20e31f1db55e02e58f1501d522e07dec
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MD5
71e27a77011a6d73b28a9403f23e39c7
SHA17e6122eb754e9c6a085ba38234c4e3e2a4ba72d5
SHA2560f1bd85289b945b02326245f1d49fe90850ec82ed1694ff193eb862bae5f492e
SHA51251ecaddcc2c19f2ec84a7843902f3c0c1ddc9c6cbf45cc1d95d468045d65bf8582c75d2a8a8192f067c4bbf1db8c3a7f20e31f1db55e02e58f1501d522e07dec