Analysis
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max time kernel
32s -
max time network
31s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
01-11-2020 07:21
Static task
static1
Behavioral task
behavioral1
Sample
b89909ca38cc8db3dfed14f8fbf992d3.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
b89909ca38cc8db3dfed14f8fbf992d3.exe
Resource
win10v20201028
General
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Target
b89909ca38cc8db3dfed14f8fbf992d3.exe
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Size
789KB
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MD5
b89909ca38cc8db3dfed14f8fbf992d3
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SHA1
7f41456dd12f38cc6b18dc73d130a86df82f2614
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SHA256
1902d4a7a8bc2008c71d9806065bc9b8ec069169fc6eb61a64799dab46aaef3c
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SHA512
81da8d01f3bad0c763de1bd4fcdf70bd540ff7f321013451a1b1025ffcfba5e1e1e1f57a77e9456bf41c1d1d9f7d6558f3edaac82e7650d7428d6180c895312f
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 2 IoCs
Processes:
resource yara_rule behavioral1/memory/1664-10-0x0000000002720000-0x0000000002744000-memory.dmp family_redline behavioral1/memory/1664-16-0x0000000002750000-0x0000000002772000-memory.dmp family_redline -
Executes dropped EXE 1 IoCs
Processes:
bestof.exepid process 1664 bestof.exe -
Loads dropped DLL 1 IoCs
Processes:
b89909ca38cc8db3dfed14f8fbf992d3.exepid process 1056 b89909ca38cc8db3dfed14f8fbf992d3.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 15 checkip.amazonaws.com -
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:
b89909ca38cc8db3dfed14f8fbf992d3.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 b89909ca38cc8db3dfed14f8fbf992d3.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString b89909ca38cc8db3dfed14f8fbf992d3.exe -
Processes:
b89909ca38cc8db3dfed14f8fbf992d3.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13 b89909ca38cc8db3dfed14f8fbf992d3.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13\Blob = 040000000100000010000000410352dc0ff7501b16f0028eba6f45c50f00000001000000140000005bcaa1c2780f0bcb5a90770451d96f38963f012d0b000000010000001e000000440053005400200052006f006f0074002000430041002000580033000000090000000100000016000000301406082b0601050507030406082b06010505070301140000000100000014000000c4a7b1a47b2c71fadbe14b9075ffc415608589101d00000001000000100000004558d512eecb27464920897de7b66053030000000100000014000000dac9024f54d8f6df94935fb1732638ca6ad77c131900000001000000100000006cf252fec3e8f20996de5d4dd9aef42420000000010000004e0300003082034a30820232a003020102021044afb080d6a327ba893039862ef8406b300d06092a864886f70d0101050500303f31243022060355040a131b4469676974616c205369676e617475726520547275737420436f2e311730150603550403130e44535420526f6f74204341205833301e170d3030303933303231313231395a170d3231303933303134303131355a303f31243022060355040a131b4469676974616c205369676e617475726520547275737420436f2e311730150603550403130e44535420526f6f7420434120583330820122300d06092a864886f70d01010105000382010f003082010a0282010100dfafe99750088357b4cc6265f69082ecc7d32c6b30ca5becd9c37dc740c118148be0e83376492ae33f214993ac4e0eaf3e48cb65eefcd3210f65d22ad9328f8ce5f777b0127bb595c089a3a9baed732e7a0c063283a27e8a1430cd11a0e12a38b9790a31fd50bd8065dfb7516383c8e28861ea4b6181ec526bb9a2e24b1a289f48a39e0cda098e3e172e1edd20df5bc62a8aab2ebd70adc50b1a25907472c57b6aab34d63089ffe568137b540bc8d6aeec5a9c921e3d64b38cc6dfbfc94170ec1672d526ec38553943d0fcfd185c40f197ebd59a9b8d1dbada25b9c6d8dfc115023aabda6ef13e2ef55c089c3cd68369e4109b192ab62957e3e53d9b9ff0025d0203010001a3423040300f0603551d130101ff040530030101ff300e0603551d0f0101ff040403020106301d0603551d0e04160414c4a7b1a47b2c71fadbe14b9075ffc41560858910300d06092a864886f70d01010505000382010100a31a2c9b17005ca91eee2866373abf83c73f4bc309a095205de3d95944d23e0d3ebd8a4ba0741fce10829c741a1d7e981addcb134bb32044e491e9ccfc7da5db6ae5fee6fde04eddb7003ab57049aff2e5eb02f1d1028b19cb943a5e48c4181e58195f1e025af00cf1b1ada9dc59868b6ee991f586cafab96633aa595bcee2a7167347cb2bcc99b03748cfe3564bf5cf0f0c723287c6f044bb53726d43f526489a5267b758abfe67767178db0da256141339243185a2a8025a3047e1dd5007bc02099000eb6463609b16bc88c912e6d27d918bf93d328d65b4e97cb15776eac5b62839bf15651cc8f677966a0a8d770bd8910b048e07db29b60aee9d82353510 b89909ca38cc8db3dfed14f8fbf992d3.exe -
Runs ping.exe 1 TTPs 1 IoCs
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Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
bestof.exepid process 1664 bestof.exe 1664 bestof.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
bestof.exedescription pid process Token: SeDebugPrivilege 1664 bestof.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
b89909ca38cc8db3dfed14f8fbf992d3.exebestof.execmd.exedescription pid process target process PID 1056 wrote to memory of 1664 1056 b89909ca38cc8db3dfed14f8fbf992d3.exe bestof.exe PID 1056 wrote to memory of 1664 1056 b89909ca38cc8db3dfed14f8fbf992d3.exe bestof.exe PID 1056 wrote to memory of 1664 1056 b89909ca38cc8db3dfed14f8fbf992d3.exe bestof.exe PID 1056 wrote to memory of 1664 1056 b89909ca38cc8db3dfed14f8fbf992d3.exe bestof.exe PID 1664 wrote to memory of 1956 1664 bestof.exe cmd.exe PID 1664 wrote to memory of 1956 1664 bestof.exe cmd.exe PID 1664 wrote to memory of 1956 1664 bestof.exe cmd.exe PID 1664 wrote to memory of 1956 1664 bestof.exe cmd.exe PID 1956 wrote to memory of 472 1956 cmd.exe PING.EXE PID 1956 wrote to memory of 472 1956 cmd.exe PING.EXE PID 1956 wrote to memory of 472 1956 cmd.exe PING.EXE PID 1956 wrote to memory of 472 1956 cmd.exe PING.EXE
Processes
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C:\Users\Admin\AppData\Local\Temp\b89909ca38cc8db3dfed14f8fbf992d3.exe"C:\Users\Admin\AppData\Local\Temp\b89909ca38cc8db3dfed14f8fbf992d3.exe"1⤵
- Loads dropped DLL
- Checks processor information in registry
- Modifies system certificate store
- Suspicious use of WriteProcessMemory
PID:1056 -
C:\Users\Admin\AppData\Roaming\gfersesurity\bestof.exebestof.exe2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1664 -
C:\Windows\SysWOW64\cmd.exe"cmd.exe" /C ping 127.0.0.1 -n 3 > nul & del ""3⤵
- Suspicious use of WriteProcessMemory
PID:1956 -
C:\Windows\SysWOW64\PING.EXEping 127.0.0.1 -n 34⤵
- Runs ping.exe
PID:472
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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MD5
6943b3380427465a7998ddf3a96945a0
SHA1abb680ef5e005da1610828d518c15a250b001fd9
SHA25694e489927f1f04b50d80382b4ebbb245d8b0cd55f36dac8d7de3c543cbf361fb
SHA5125c8fb35986df56b3f6f7b850a98455ab3d767372b57838d54c9faf280826975a0f2a0828fa977469a3d5e02ce9f7bea23e8b574cf793f4264f385e871de8277d
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MD5
6943b3380427465a7998ddf3a96945a0
SHA1abb680ef5e005da1610828d518c15a250b001fd9
SHA25694e489927f1f04b50d80382b4ebbb245d8b0cd55f36dac8d7de3c543cbf361fb
SHA5125c8fb35986df56b3f6f7b850a98455ab3d767372b57838d54c9faf280826975a0f2a0828fa977469a3d5e02ce9f7bea23e8b574cf793f4264f385e871de8277d