Analysis
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max time kernel
121s -
max time network
123s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
26-01-2021 06:31
Static task
static1
Behavioral task
behavioral1
Sample
IMG_1677.EXE
Resource
win7v20201028
Behavioral task
behavioral2
Sample
IMG_1677.EXE
Resource
win10v20201028
General
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Target
IMG_1677.EXE
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Size
1.2MB
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MD5
6814ec089e0a7f02265ce289d58d5a43
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SHA1
d626b1a7c18d7217ca29381ace800e0ec4165272
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SHA256
ff68f0b8908d33ce1a3eb32cc1478e911b4e9dd853371f62a604fb366b274234
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SHA512
0e7465b9510d739cd2c36041c6bffe060a6f57083a2302625d091aab831fd42ab768887de81102a431492926e01364fd0b9a054f09c028cd36458ea83b9867c1
Malware Config
Signatures
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Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
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Snake Keylogger Payload 2 IoCs
Processes:
resource yara_rule behavioral2/memory/1344-15-0x000000000046370E-mapping.dmp family_snakekeylogger behavioral2/memory/1344-19-0x0000000000800000-0x0000000000868000-memory.dmp family_snakekeylogger -
Executes dropped EXE 1 IoCs
Processes:
InstallUtil.exepid process 1344 InstallUtil.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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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 20 checkip.dyndns.org 23 freegeoip.app 24 freegeoip.app -
Suspicious use of SetThreadContext 1 IoCs
Processes:
IMG_1677.EXEdescription pid process target process PID 1052 set thread context of 1344 1052 IMG_1677.EXE InstallUtil.exe -
Suspicious behavior: EnumeratesProcesses 9 IoCs
Processes:
IMG_1677.EXEInstallUtil.exepid process 1052 IMG_1677.EXE 1052 IMG_1677.EXE 1344 InstallUtil.exe 1344 InstallUtil.exe 1344 InstallUtil.exe 1344 InstallUtil.exe 1344 InstallUtil.exe 1344 InstallUtil.exe 1344 InstallUtil.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
IMG_1677.EXEInstallUtil.exedescription pid process Token: SeDebugPrivilege 1052 IMG_1677.EXE Token: SeDebugPrivilege 1344 InstallUtil.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
IMG_1677.EXEdescription pid process target process PID 1052 wrote to memory of 1344 1052 IMG_1677.EXE InstallUtil.exe PID 1052 wrote to memory of 1344 1052 IMG_1677.EXE InstallUtil.exe PID 1052 wrote to memory of 1344 1052 IMG_1677.EXE InstallUtil.exe PID 1052 wrote to memory of 1344 1052 IMG_1677.EXE InstallUtil.exe PID 1052 wrote to memory of 1344 1052 IMG_1677.EXE InstallUtil.exe PID 1052 wrote to memory of 1344 1052 IMG_1677.EXE InstallUtil.exe PID 1052 wrote to memory of 1344 1052 IMG_1677.EXE InstallUtil.exe PID 1052 wrote to memory of 1344 1052 IMG_1677.EXE InstallUtil.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\IMG_1677.EXE"C:\Users\Admin\AppData\Local\Temp\IMG_1677.EXE"1⤵
- 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"2⤵
- 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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memory/1052-8-0x0000000005550000-0x000000000556E000-memory.dmpFilesize
120KB
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memory/1052-5-0x0000000005470000-0x0000000005471000-memory.dmpFilesize
4KB
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memory/1052-2-0x0000000073A30000-0x000000007411E000-memory.dmpFilesize
6.9MB
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memory/1052-9-0x0000000005570000-0x0000000005571000-memory.dmpFilesize
4KB
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memory/1052-10-0x0000000008920000-0x0000000008921000-memory.dmpFilesize
4KB
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memory/1052-11-0x0000000005771000-0x0000000005772000-memory.dmpFilesize
4KB
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memory/1052-12-0x0000000009330000-0x000000000933B000-memory.dmpFilesize
44KB
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memory/1052-13-0x0000000009340000-0x0000000009341000-memory.dmpFilesize
4KB
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memory/1052-3-0x0000000000AF0000-0x0000000000AF1000-memory.dmpFilesize
4KB
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memory/1052-6-0x0000000005770000-0x0000000005771000-memory.dmpFilesize
4KB
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memory/1344-15-0x000000000046370E-mapping.dmp
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memory/1344-18-0x0000000073A30000-0x000000007411E000-memory.dmpFilesize
6.9MB
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memory/1344-19-0x0000000000800000-0x0000000000868000-memory.dmpFilesize
416KB
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memory/1344-21-0x00000000051D0000-0x00000000051D1000-memory.dmpFilesize
4KB
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memory/1344-23-0x0000000004D80000-0x0000000004D81000-memory.dmpFilesize
4KB
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memory/1344-24-0x0000000005DA0000-0x0000000005DA1000-memory.dmpFilesize
4KB
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memory/1344-26-0x0000000005D20000-0x0000000005D21000-memory.dmpFilesize
4KB