Analysis
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max time kernel
151s -
max time network
136s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
18-01-2021 07:16
Static task
static1
Behavioral task
behavioral1
Sample
IMG_13791.doc
Resource
win7v20201028
Behavioral task
behavioral2
Sample
IMG_13791.doc
Resource
win10v20201028
General
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Target
IMG_13791.doc
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Size
623KB
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MD5
f07ba9823647515d52c35fdc53936c2e
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SHA1
2072b8921e48ffc0cfe1560e989cf63957b4343a
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SHA256
26a2b448dc82400ef64b88557b9443731bf994f0539ccb147b14a9a89c0283d1
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SHA512
87d3007aace763d6181b5c098fac1f28e58f6dfa74fb8375c08f190c129b2abb46068dabb115834e0287cbf8600fd08a05e4a9be47ba9248edf66456e4b5478f
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 behavioral1/memory/1380-38-0x000000000046251E-mapping.dmp family_snakekeylogger behavioral1/memory/1380-40-0x0000000000090000-0x00000000000F8000-memory.dmp family_snakekeylogger -
Blocklisted process makes network request 5 IoCs
Processes:
EQNEDT32.EXEflow pid process 7 1732 EQNEDT32.EXE 9 1732 EQNEDT32.EXE 10 1732 EQNEDT32.EXE 12 1732 EQNEDT32.EXE 14 1732 EQNEDT32.EXE -
Executes dropped EXE 3 IoCs
Processes:
69577.exescis.exeInstallUtil.exepid process 1452 69577.exe 1104 scis.exe 1380 InstallUtil.exe -
Loads dropped DLL 3 IoCs
Processes:
EQNEDT32.EXE69577.exescis.exepid process 1732 EQNEDT32.EXE 1452 69577.exe 1104 scis.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-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run reg.exe Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\not = "C:\\Users\\Admin\\scis.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 15 checkip.dyndns.org 18 freegeoip.app 19 freegeoip.app -
Suspicious use of SetThreadContext 1 IoCs
Processes:
scis.exedescription pid process target process PID 1104 set thread context of 1380 1104 scis.exe InstallUtil.exe -
Drops file in Windows directory 1 IoCs
Processes:
WINWORD.EXEdescription ioc process File opened for modification C:\Windows\Debug\WIA\wiatrace.log WINWORD.EXE -
Office loads VBA resources, possible macro or embedded object present
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Launches Equation Editor 1 TTPs 1 IoCs
Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.
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Processes:
WINWORD.EXEdescription ioc process Set value (int) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1" WINWORD.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar WINWORD.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt WINWORD.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105" WINWORD.EXE Set value (int) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55" WINWORD.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel WINWORD.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes" WINWORD.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote WINWORD.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000" WINWORD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
WINWORD.EXEpid process 1964 WINWORD.EXE -
Suspicious behavior: EnumeratesProcesses 8 IoCs
Processes:
69577.exescis.exeInstallUtil.exepid process 1452 69577.exe 1452 69577.exe 1452 69577.exe 1452 69577.exe 1452 69577.exe 1104 scis.exe 1104 scis.exe 1380 InstallUtil.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
69577.exescis.exeInstallUtil.exedescription pid process Token: SeDebugPrivilege 1452 69577.exe Token: SeDebugPrivilege 1104 scis.exe Token: SeDebugPrivilege 1380 InstallUtil.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
WINWORD.EXEpid process 1964 WINWORD.EXE 1964 WINWORD.EXE -
Suspicious use of WriteProcessMemory 32 IoCs
Processes:
WINWORD.EXEEQNEDT32.EXE69577.execmd.exescis.exedescription pid process target process PID 1964 wrote to memory of 1952 1964 WINWORD.EXE splwow64.exe PID 1964 wrote to memory of 1952 1964 WINWORD.EXE splwow64.exe PID 1964 wrote to memory of 1952 1964 WINWORD.EXE splwow64.exe PID 1964 wrote to memory of 1952 1964 WINWORD.EXE splwow64.exe PID 1732 wrote to memory of 1452 1732 EQNEDT32.EXE 69577.exe PID 1732 wrote to memory of 1452 1732 EQNEDT32.EXE 69577.exe PID 1732 wrote to memory of 1452 1732 EQNEDT32.EXE 69577.exe PID 1732 wrote to memory of 1452 1732 EQNEDT32.EXE 69577.exe PID 1452 wrote to memory of 1840 1452 69577.exe cmd.exe PID 1452 wrote to memory of 1840 1452 69577.exe cmd.exe PID 1452 wrote to memory of 1840 1452 69577.exe cmd.exe PID 1452 wrote to memory of 1840 1452 69577.exe cmd.exe PID 1840 wrote to memory of 1820 1840 cmd.exe reg.exe PID 1840 wrote to memory of 1820 1840 cmd.exe reg.exe PID 1840 wrote to memory of 1820 1840 cmd.exe reg.exe PID 1840 wrote to memory of 1820 1840 cmd.exe reg.exe PID 1452 wrote to memory of 1104 1452 69577.exe scis.exe PID 1452 wrote to memory of 1104 1452 69577.exe scis.exe PID 1452 wrote to memory of 1104 1452 69577.exe scis.exe PID 1452 wrote to memory of 1104 1452 69577.exe scis.exe PID 1104 wrote to memory of 1380 1104 scis.exe InstallUtil.exe PID 1104 wrote to memory of 1380 1104 scis.exe InstallUtil.exe PID 1104 wrote to memory of 1380 1104 scis.exe InstallUtil.exe PID 1104 wrote to memory of 1380 1104 scis.exe InstallUtil.exe PID 1104 wrote to memory of 1380 1104 scis.exe InstallUtil.exe PID 1104 wrote to memory of 1380 1104 scis.exe InstallUtil.exe PID 1104 wrote to memory of 1380 1104 scis.exe InstallUtil.exe PID 1104 wrote to memory of 1380 1104 scis.exe InstallUtil.exe PID 1104 wrote to memory of 1380 1104 scis.exe InstallUtil.exe PID 1104 wrote to memory of 1380 1104 scis.exe InstallUtil.exe PID 1104 wrote to memory of 1380 1104 scis.exe InstallUtil.exe PID 1104 wrote to memory of 1380 1104 scis.exe InstallUtil.exe
Processes
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C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE"C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\IMG_13791.doc"1⤵
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1964 -
C:\Windows\splwow64.exeC:\Windows\splwow64.exe 122882⤵PID:1952
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C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE"C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding1⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
PID:1732 -
C:\Users\Public\69577.exe"C:\Users\Public\69577.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1452 -
C:\Windows\SysWOW64\cmd.exe"cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "not" /t REG_SZ /d "C:\Users\Admin\scis.exe"3⤵
- Suspicious use of WriteProcessMemory
PID:1840 -
C:\Windows\SysWOW64\reg.exeREG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "not" /t REG_SZ /d "C:\Users\Admin\scis.exe"4⤵
- Adds Run key to start application
PID:1820
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C:\Users\Admin\scis.exe"C:\Users\Admin\scis.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1104 -
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1380
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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MD5
91c9ae9c9a17a9db5e08b120e668c74c
SHA150770954c1ceb0bb6f1d5d3f2de2a0a065773723
SHA256e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f
SHA512ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e
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MD5
91c9ae9c9a17a9db5e08b120e668c74c
SHA150770954c1ceb0bb6f1d5d3f2de2a0a065773723
SHA256e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f
SHA512ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e
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MD5
826f9a380c5041676822fc65de52466e
SHA19f87407fced2b39124d049519d44587c2c4f869c
SHA256995f5115bdddb8879510dad9fc20d70f31d66535638957617ffb26675b5c1dda
SHA5121da239475c794ee7c24747cee20249c2e7b7264bd253554248b0202771fb3b5349302965b9c34843bf814d4f40fe0327989f38a87430bc410e1bb655ae44827a
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MD5
52254e42523afbd28c7377c6b7f82cc0
SHA1bc9fdf2d59e3b3c54c4dc1cdea9c5954ceebc32e
SHA256db0b892ea1b776ac1324cdb701d9d5fe49e4817259e93cedf8249ed3f9983664
SHA5120a88462bdefb64e98e93737580a0a0ad212c2e3e0fe6ed9448b67271ece6edf379bc3404d4f622016fe3b0779c39dc4600340a2693d78313421efcf47db5398c
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MD5
52254e42523afbd28c7377c6b7f82cc0
SHA1bc9fdf2d59e3b3c54c4dc1cdea9c5954ceebc32e
SHA256db0b892ea1b776ac1324cdb701d9d5fe49e4817259e93cedf8249ed3f9983664
SHA5120a88462bdefb64e98e93737580a0a0ad212c2e3e0fe6ed9448b67271ece6edf379bc3404d4f622016fe3b0779c39dc4600340a2693d78313421efcf47db5398c
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MD5
52254e42523afbd28c7377c6b7f82cc0
SHA1bc9fdf2d59e3b3c54c4dc1cdea9c5954ceebc32e
SHA256db0b892ea1b776ac1324cdb701d9d5fe49e4817259e93cedf8249ed3f9983664
SHA5120a88462bdefb64e98e93737580a0a0ad212c2e3e0fe6ed9448b67271ece6edf379bc3404d4f622016fe3b0779c39dc4600340a2693d78313421efcf47db5398c
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MD5
52254e42523afbd28c7377c6b7f82cc0
SHA1bc9fdf2d59e3b3c54c4dc1cdea9c5954ceebc32e
SHA256db0b892ea1b776ac1324cdb701d9d5fe49e4817259e93cedf8249ed3f9983664
SHA5120a88462bdefb64e98e93737580a0a0ad212c2e3e0fe6ed9448b67271ece6edf379bc3404d4f622016fe3b0779c39dc4600340a2693d78313421efcf47db5398c
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MD5
91c9ae9c9a17a9db5e08b120e668c74c
SHA150770954c1ceb0bb6f1d5d3f2de2a0a065773723
SHA256e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f
SHA512ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e
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MD5
52254e42523afbd28c7377c6b7f82cc0
SHA1bc9fdf2d59e3b3c54c4dc1cdea9c5954ceebc32e
SHA256db0b892ea1b776ac1324cdb701d9d5fe49e4817259e93cedf8249ed3f9983664
SHA5120a88462bdefb64e98e93737580a0a0ad212c2e3e0fe6ed9448b67271ece6edf379bc3404d4f622016fe3b0779c39dc4600340a2693d78313421efcf47db5398c
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MD5
52254e42523afbd28c7377c6b7f82cc0
SHA1bc9fdf2d59e3b3c54c4dc1cdea9c5954ceebc32e
SHA256db0b892ea1b776ac1324cdb701d9d5fe49e4817259e93cedf8249ed3f9983664
SHA5120a88462bdefb64e98e93737580a0a0ad212c2e3e0fe6ed9448b67271ece6edf379bc3404d4f622016fe3b0779c39dc4600340a2693d78313421efcf47db5398c