Analysis
-
max time kernel
118s -
max time network
125s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
26-01-2021 20:25
Behavioral task
behavioral1
Sample
case (1057).xls
Resource
win7v20201028
General
-
Target
case (1057).xls
-
Size
153KB
-
MD5
cbc37bc9a7ec9836c033708d090db81c
-
SHA1
a1fbde54662fb5cdb677f5841a3603df30345108
-
SHA256
95e0295b15b7c624febe347f44747dada5cb1fc79b73561b3153af81b351a8de
-
SHA512
03c04ea7f7f64836491fa345f075f86f9e983770e0ce174daa2ee187a79c748b548b82c3a1c4f870d6390a616a03a8f713795c2b902d788c4bc2aa17e21d2f05
Malware Config
Extracted
https://rnollg.com/kev/scfrd.dll
Extracted
zloader
kev
26/01
https://gadgetswolf.com/post.php
https://homesoapmolds.com/post.php
https://govemedico.tk/post.php
Signatures
-
Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
Processes:
rundll32.exedescription pid pid_target process target process Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process 756 1668 rundll32.exe EXCEL.EXE -
Blocklisted process makes network request 3 IoCs
Processes:
msiexec.exeflow pid process 12 808 msiexec.exe 14 808 msiexec.exe 16 808 msiexec.exe -
Loads dropped DLL 4 IoCs
Processes:
rundll32.exepid process 756 rundll32.exe 756 rundll32.exe 756 rundll32.exe 756 rundll32.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
-
Suspicious use of SetThreadContext 1 IoCs
Processes:
rundll32.exedescription pid process target process PID 756 set thread context of 808 756 rundll32.exe msiexec.exe -
Enumerates system info in registry 2 TTPs 1 IoCs
Processes:
EXCEL.EXEdescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor EXCEL.EXE -
Processes:
EXCEL.EXEdescription ioc process Key created \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105" EXCEL.EXE Set value (int) \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Toolbar EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt EXCEL.EXE Set value (int) \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000" EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 1668 EXCEL.EXE -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
msiexec.exedescription pid process Token: SeSecurityPrivilege 808 msiexec.exe Token: SeSecurityPrivilege 808 msiexec.exe -
Suspicious use of SetWindowsHookEx 3 IoCs
Processes:
EXCEL.EXEpid process 1668 EXCEL.EXE 1668 EXCEL.EXE 1668 EXCEL.EXE -
Suspicious use of WriteProcessMemory 16 IoCs
Processes:
EXCEL.EXErundll32.exedescription pid process target process PID 1668 wrote to memory of 756 1668 EXCEL.EXE rundll32.exe PID 1668 wrote to memory of 756 1668 EXCEL.EXE rundll32.exe PID 1668 wrote to memory of 756 1668 EXCEL.EXE rundll32.exe PID 1668 wrote to memory of 756 1668 EXCEL.EXE rundll32.exe PID 1668 wrote to memory of 756 1668 EXCEL.EXE rundll32.exe PID 1668 wrote to memory of 756 1668 EXCEL.EXE rundll32.exe PID 1668 wrote to memory of 756 1668 EXCEL.EXE rundll32.exe PID 756 wrote to memory of 808 756 rundll32.exe msiexec.exe PID 756 wrote to memory of 808 756 rundll32.exe msiexec.exe PID 756 wrote to memory of 808 756 rundll32.exe msiexec.exe PID 756 wrote to memory of 808 756 rundll32.exe msiexec.exe PID 756 wrote to memory of 808 756 rundll32.exe msiexec.exe PID 756 wrote to memory of 808 756 rundll32.exe msiexec.exe PID 756 wrote to memory of 808 756 rundll32.exe msiexec.exe PID 756 wrote to memory of 808 756 rundll32.exe msiexec.exe PID 756 wrote to memory of 808 756 rundll32.exe msiexec.exe
Processes
-
C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde "C:\Users\Admin\AppData\Local\Temp\case (1057).xls"1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\rundll32.exe"C:\Windows\System32\rundll32.exe" C:\ProgramData\formnet.dll,DllRegisterServer2⤵
- Process spawned unexpected child process
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\msiexec.exemsiexec.exe3⤵
- Blocklisted process makes network request
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
C:\ProgramData\formnet.dllMD5
b0f3fa047f6ae39a145fd364f693638e
SHA11951696d8aca4a31614bb68f9da392402785e14e
SHA2560bf22b8f9aaef21afe71fcbbea62325e7582dad410b0a537f38a9eb8e6855890
SHA51286e4516705380617a9f48b2e1cd7d9e676439398b802eb6047cd478d4b10bf8f4ba20e019f337b01761fa247cd631ccab22851f078089c2e1c61574bca9f5b98
-
\ProgramData\formnet.dllMD5
b0f3fa047f6ae39a145fd364f693638e
SHA11951696d8aca4a31614bb68f9da392402785e14e
SHA2560bf22b8f9aaef21afe71fcbbea62325e7582dad410b0a537f38a9eb8e6855890
SHA51286e4516705380617a9f48b2e1cd7d9e676439398b802eb6047cd478d4b10bf8f4ba20e019f337b01761fa247cd631ccab22851f078089c2e1c61574bca9f5b98
-
\ProgramData\formnet.dllMD5
b0f3fa047f6ae39a145fd364f693638e
SHA11951696d8aca4a31614bb68f9da392402785e14e
SHA2560bf22b8f9aaef21afe71fcbbea62325e7582dad410b0a537f38a9eb8e6855890
SHA51286e4516705380617a9f48b2e1cd7d9e676439398b802eb6047cd478d4b10bf8f4ba20e019f337b01761fa247cd631ccab22851f078089c2e1c61574bca9f5b98
-
\ProgramData\formnet.dllMD5
b0f3fa047f6ae39a145fd364f693638e
SHA11951696d8aca4a31614bb68f9da392402785e14e
SHA2560bf22b8f9aaef21afe71fcbbea62325e7582dad410b0a537f38a9eb8e6855890
SHA51286e4516705380617a9f48b2e1cd7d9e676439398b802eb6047cd478d4b10bf8f4ba20e019f337b01761fa247cd631ccab22851f078089c2e1c61574bca9f5b98
-
\ProgramData\formnet.dllMD5
b0f3fa047f6ae39a145fd364f693638e
SHA11951696d8aca4a31614bb68f9da392402785e14e
SHA2560bf22b8f9aaef21afe71fcbbea62325e7582dad410b0a537f38a9eb8e6855890
SHA51286e4516705380617a9f48b2e1cd7d9e676439398b802eb6047cd478d4b10bf8f4ba20e019f337b01761fa247cd631ccab22851f078089c2e1c61574bca9f5b98
-
memory/368-5-0x000007FEF7080000-0x000007FEF72FA000-memory.dmpFilesize
2.5MB
-
memory/756-7-0x0000000074B31000-0x0000000074B33000-memory.dmpFilesize
8KB
-
memory/756-6-0x0000000000000000-mapping.dmp
-
memory/756-13-0x0000000000B10000-0x0000000000B36000-memory.dmpFilesize
152KB
-
memory/756-14-0x00000000000C0000-0x00000000000C1000-memory.dmpFilesize
4KB
-
memory/808-15-0x0000000000000000-mapping.dmp
-
memory/808-17-0x0000000000090000-0x00000000000B6000-memory.dmpFilesize
152KB
-
memory/1668-3-0x0000000071001000-0x0000000071003000-memory.dmpFilesize
8KB
-
memory/1668-4-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB
-
memory/1668-2-0x000000002FCD1000-0x000000002FCD4000-memory.dmpFilesize
12KB