Analysis
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max time kernel
149s -
max time network
152s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
29-01-2021 16:34
Static task
static1
Behavioral task
behavioral1
Sample
IMG_05752003.scr
Resource
win7v20201028
Behavioral task
behavioral2
Sample
IMG_05752003.scr
Resource
win10v20201028
General
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Target
IMG_05752003.scr
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Size
734KB
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MD5
5176f0854a6b3ede362f46eb17ce2317
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SHA1
d9a7e13ac86eea2bbdf8b5c0777cc1a7cc574179
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SHA256
56e07ad691527a959fc383a66ee5ab1ab94fa9d74a330f8946f6fbcc8bb57533
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SHA512
77ccf0d07106d3c381914e955d1b820c0497f2b843bce9c7ef95d6754e66ff1a420512d8dc19db1dd1a93b137a04372a14369e905826797fb7b6614143ded531
Malware Config
Signatures
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Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
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Snake Keylogger Payload 3 IoCs
Processes:
resource yara_rule behavioral1/memory/580-27-0x0000000000400000-0x0000000000468000-memory.dmp family_snakekeylogger behavioral1/memory/580-28-0x000000000046251E-mapping.dmp family_snakekeylogger behavioral1/memory/580-31-0x0000000000400000-0x0000000000468000-memory.dmp family_snakekeylogger -
Executes dropped EXE 2 IoCs
Processes:
mnoi.exeInstallUtil.exepid process 1532 mnoi.exe 580 InstallUtil.exe -
Loads dropped DLL 2 IoCs
Processes:
IMG_05752003.scrmnoi.exepid process 1872 IMG_05752003.scr 1532 mnoi.exe -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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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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Adds Run key to start application 2 TTPs 2 IoCs
Processes:
reg.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Windows\CurrentVersion\Run reg.exe Set value (str) \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Windows\CurrentVersion\Run\etsb = "C:\\Users\\Admin\\mnoi.exe" reg.exe -
Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 11 checkip.dyndns.org 16 freegeoip.app 17 freegeoip.app -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious use of SetThreadContext 1 IoCs
Processes:
mnoi.exedescription pid process target process PID 1532 set thread context of 580 1532 mnoi.exe InstallUtil.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
Processes:
IMG_05752003.scrmnoi.exeInstallUtil.exepid process 1872 IMG_05752003.scr 1872 IMG_05752003.scr 1872 IMG_05752003.scr 1872 IMG_05752003.scr 1872 IMG_05752003.scr 1532 mnoi.exe 1532 mnoi.exe 580 InstallUtil.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
IMG_05752003.scrmnoi.exeInstallUtil.exedescription pid process Token: SeDebugPrivilege 1872 IMG_05752003.scr Token: SeDebugPrivilege 1532 mnoi.exe Token: SeDebugPrivilege 580 InstallUtil.exe -
Suspicious use of WriteProcessMemory 24 IoCs
Processes:
IMG_05752003.scrcmd.exemnoi.exedescription pid process target process PID 1872 wrote to memory of 996 1872 IMG_05752003.scr cmd.exe PID 1872 wrote to memory of 996 1872 IMG_05752003.scr cmd.exe PID 1872 wrote to memory of 996 1872 IMG_05752003.scr cmd.exe PID 1872 wrote to memory of 996 1872 IMG_05752003.scr cmd.exe PID 996 wrote to memory of 608 996 cmd.exe reg.exe PID 996 wrote to memory of 608 996 cmd.exe reg.exe PID 996 wrote to memory of 608 996 cmd.exe reg.exe PID 996 wrote to memory of 608 996 cmd.exe reg.exe PID 1872 wrote to memory of 1532 1872 IMG_05752003.scr mnoi.exe PID 1872 wrote to memory of 1532 1872 IMG_05752003.scr mnoi.exe PID 1872 wrote to memory of 1532 1872 IMG_05752003.scr mnoi.exe PID 1872 wrote to memory of 1532 1872 IMG_05752003.scr mnoi.exe PID 1532 wrote to memory of 580 1532 mnoi.exe InstallUtil.exe PID 1532 wrote to memory of 580 1532 mnoi.exe InstallUtil.exe PID 1532 wrote to memory of 580 1532 mnoi.exe InstallUtil.exe PID 1532 wrote to memory of 580 1532 mnoi.exe InstallUtil.exe PID 1532 wrote to memory of 580 1532 mnoi.exe InstallUtil.exe PID 1532 wrote to memory of 580 1532 mnoi.exe InstallUtil.exe PID 1532 wrote to memory of 580 1532 mnoi.exe InstallUtil.exe PID 1532 wrote to memory of 580 1532 mnoi.exe InstallUtil.exe PID 1532 wrote to memory of 580 1532 mnoi.exe InstallUtil.exe PID 1532 wrote to memory of 580 1532 mnoi.exe InstallUtil.exe PID 1532 wrote to memory of 580 1532 mnoi.exe InstallUtil.exe PID 1532 wrote to memory of 580 1532 mnoi.exe InstallUtil.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\IMG_05752003.scr"C:\Users\Admin\AppData\Local\Temp\IMG_05752003.scr" /S1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "etsb" /t REG_SZ /d "C:\Users\Admin\mnoi.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\reg.exeREG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "etsb" /t REG_SZ /d "C:\Users\Admin\mnoi.exe"3⤵
- Adds Run key to start application
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C:\Users\Admin\mnoi.exe"C:\Users\Admin\mnoi.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\InstallUtil.exeMD5
91c9ae9c9a17a9db5e08b120e668c74c
SHA150770954c1ceb0bb6f1d5d3f2de2a0a065773723
SHA256e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f
SHA512ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e
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C:\Users\Admin\AppData\Local\Temp\InstallUtil.exeMD5
91c9ae9c9a17a9db5e08b120e668c74c
SHA150770954c1ceb0bb6f1d5d3f2de2a0a065773723
SHA256e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f
SHA512ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e
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C:\Users\Admin\mnoi.exeMD5
5176f0854a6b3ede362f46eb17ce2317
SHA1d9a7e13ac86eea2bbdf8b5c0777cc1a7cc574179
SHA25656e07ad691527a959fc383a66ee5ab1ab94fa9d74a330f8946f6fbcc8bb57533
SHA51277ccf0d07106d3c381914e955d1b820c0497f2b843bce9c7ef95d6754e66ff1a420512d8dc19db1dd1a93b137a04372a14369e905826797fb7b6614143ded531
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C:\Users\Admin\mnoi.exeMD5
5176f0854a6b3ede362f46eb17ce2317
SHA1d9a7e13ac86eea2bbdf8b5c0777cc1a7cc574179
SHA25656e07ad691527a959fc383a66ee5ab1ab94fa9d74a330f8946f6fbcc8bb57533
SHA51277ccf0d07106d3c381914e955d1b820c0497f2b843bce9c7ef95d6754e66ff1a420512d8dc19db1dd1a93b137a04372a14369e905826797fb7b6614143ded531
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\Users\Admin\AppData\Local\Temp\InstallUtil.exeMD5
91c9ae9c9a17a9db5e08b120e668c74c
SHA150770954c1ceb0bb6f1d5d3f2de2a0a065773723
SHA256e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f
SHA512ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e
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\Users\Admin\mnoi.exeMD5
5176f0854a6b3ede362f46eb17ce2317
SHA1d9a7e13ac86eea2bbdf8b5c0777cc1a7cc574179
SHA25656e07ad691527a959fc383a66ee5ab1ab94fa9d74a330f8946f6fbcc8bb57533
SHA51277ccf0d07106d3c381914e955d1b820c0497f2b843bce9c7ef95d6754e66ff1a420512d8dc19db1dd1a93b137a04372a14369e905826797fb7b6614143ded531
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memory/580-33-0x0000000004BE0000-0x0000000004BE1000-memory.dmpFilesize
4KB
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memory/580-31-0x0000000000400000-0x0000000000468000-memory.dmpFilesize
416KB
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memory/580-30-0x00000000743D0000-0x0000000074ABE000-memory.dmpFilesize
6.9MB
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memory/580-28-0x000000000046251E-mapping.dmp
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memory/580-27-0x0000000000400000-0x0000000000468000-memory.dmpFilesize
416KB
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memory/608-10-0x0000000000000000-mapping.dmp
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memory/996-9-0x0000000000000000-mapping.dmp
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memory/1532-17-0x0000000000CF0000-0x0000000000CF1000-memory.dmpFilesize
4KB
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memory/1532-19-0x00000000048D0000-0x00000000048D1000-memory.dmpFilesize
4KB
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memory/1532-23-0x0000000000BD0000-0x0000000000BDB000-memory.dmpFilesize
44KB
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memory/1532-24-0x0000000000CE0000-0x0000000000CE1000-memory.dmpFilesize
4KB
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memory/1532-13-0x0000000000000000-mapping.dmp
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memory/1532-16-0x00000000743D0000-0x0000000074ABE000-memory.dmpFilesize
6.9MB
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memory/1872-11-0x0000000004D71000-0x0000000004D72000-memory.dmpFilesize
4KB
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memory/1872-2-0x00000000743D0000-0x0000000074ABE000-memory.dmpFilesize
6.9MB
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memory/1872-8-0x00000000006D0000-0x00000000006D1000-memory.dmpFilesize
4KB
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memory/1872-7-0x0000000000400000-0x000000000041E000-memory.dmpFilesize
120KB
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memory/1872-5-0x0000000004D70000-0x0000000004D71000-memory.dmpFilesize
4KB
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memory/1872-3-0x0000000000340000-0x0000000000341000-memory.dmpFilesize
4KB