e99c27037595f4931d753f7e372cbad60953e56c327d9ea2a2c3042db0f5f4e4

General

Target

e99c27037595f4931d753f7e372cbad60953e56c327d9ea2a2c3042db0f5f4e4.xls
Size

113KB
MD5

da933906dd6b43244cfa5836f0b43e9b
SHA1

da5c28e9da7d1ed0857e446dcdacbae78f0cdb53
SHA256

e99c27037595f4931d753f7e372cbad60953e56c327d9ea2a2c3042db0f5f4e4
SHA512

b7ac20412f3279c4041993b36ce67377d818752c01f2a08be43e6340947f225f28f125f3228473d93aac4c554f5ccb6261a8caae382a3696a4bf00e20be4178a

Score

10^/10

suricata

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://gaidov.bg/wp-includes/Ug/

xlm40.dropper

http://studiokrishnaproduction.com/wp-includes/3mJ/

Signatures

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

rundll32.exe

description	pid	pid_target	Process	procid_target
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3976	796	rundll32.exe	68

suricata: ET MALWARE W32/Emotet CnC Beacon 3
suricata: ET MALWARE W32/Emotet CnC Beacon 3
suricata

Blocklisted process makes network request 1 IoCs

Processes:

rundll32.exe

flow	pid	Process
44	3172	rundll32.exe

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

Processes:

rundll32.exerundll32.exe

pid	Process
3976	rundll32.exe
3232	rundll32.exe

Drops file in System32 directory 1 IoCs

Processes:

rundll32.exe

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Swyflulmcazl\yxdk.ess	rundll32.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid	Process
796	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

rundll32.exe

pid	Process
3172	rundll32.exe
3172	rundll32.exe

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	Process
796	EXCEL.EXE
796	EXCEL.EXE
796	EXCEL.EXE
796	EXCEL.EXE
796	EXCEL.EXE
796	EXCEL.EXE
796	EXCEL.EXE
796	EXCEL.EXE
796	EXCEL.EXE
796	EXCEL.EXE
796	EXCEL.EXE
796	EXCEL.EXE

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

EXCEL.EXErundll32.exerundll32.exerundll32.exe

description	pid	Process	procid_target
PID 796 wrote to memory of 3976	796	EXCEL.EXE	71
PID 796 wrote to memory of 3976	796	EXCEL.EXE	71
PID 796 wrote to memory of 3976	796	EXCEL.EXE	71
PID 3976 wrote to memory of 3232	3976	rundll32.exe	72
PID 3976 wrote to memory of 3232	3976	rundll32.exe	72
PID 3976 wrote to memory of 3232	3976	rundll32.exe	72
PID 3232 wrote to memory of 2920	3232	rundll32.exe	73
PID 3232 wrote to memory of 2920	3232	rundll32.exe	73
PID 3232 wrote to memory of 2920	3232	rundll32.exe	73
PID 2920 wrote to memory of 3172	2920	rundll32.exe	74
PID 2920 wrote to memory of 3172	2920	rundll32.exe	74
PID 2920 wrote to memory of 3172	2920	rundll32.exe	74

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\e99c27037595f4931d753f7e372cbad60953e56c327d9ea2a2c3042db0f5f4e4.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:796
- C:\Windows\SysWow64\rundll32.exe
  C:\Windows\SysWow64\rundll32.exe ..\sun.ocx,D"&"l"&"lR"&"egister"&"Serve"&"r
  2⤵
  - Process spawned unexpected child process
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:3976
- - C:\Windows\SysWOW64\rundll32.exe
    C:\Windows\SysWOW64\rundll32.exe "C:\Users\Admin\sun.ocx",DllRegisterServer
    3⤵
    - Loads dropped DLL
    - Drops file in System32 directory
    - Suspicious use of WriteProcessMemory
    PID:3232
  - - C:\Windows\SysWOW64\rundll32.exe
      C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Swyflulmcazl\yxdk.ess",wQPxvWygPDFQhTH
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2920
    - - C:\Windows\SysWOW64\rundll32.exe
        
        C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Swyflulmcazl\yxdk.ess",DllRegisterServer
        5⤵
        Blocklisted process makes network request
        Suspicious behavior: EnumeratesProcesses
        
        PID:3172

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\sun.ocx

MD5
0bc82ceb0a4a680ffd51be1ea9022f07

SHA1
e870d8942344cec0e31c65d3b32a0576ae2d7842

SHA256
cf8cedff5b54b48793bc3610775ef5f9324bc483d6caf7b2c98e1c8547a2560a

SHA512
2c5731c309813819b39880acf6ca9c0426754597ff86e7ca12b6df68d3df5a918cc8a455c49fbb1b5f5f9cd722b5d4d09d909cbf560bfb93b199de03c030ac86

Download Submit
\Users\Admin\sun.ocx

MD5
0bc82ceb0a4a680ffd51be1ea9022f07

SHA1
e870d8942344cec0e31c65d3b32a0576ae2d7842

SHA256
cf8cedff5b54b48793bc3610775ef5f9324bc483d6caf7b2c98e1c8547a2560a

SHA512
2c5731c309813819b39880acf6ca9c0426754597ff86e7ca12b6df68d3df5a918cc8a455c49fbb1b5f5f9cd722b5d4d09d909cbf560bfb93b199de03c030ac86

Download Submit
\Users\Admin\sun.ocx

MD5
0bc82ceb0a4a680ffd51be1ea9022f07

SHA1
e870d8942344cec0e31c65d3b32a0576ae2d7842

SHA256
cf8cedff5b54b48793bc3610775ef5f9324bc483d6caf7b2c98e1c8547a2560a

SHA512
2c5731c309813819b39880acf6ca9c0426754597ff86e7ca12b6df68d3df5a918cc8a455c49fbb1b5f5f9cd722b5d4d09d909cbf560bfb93b199de03c030ac86

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memory/796-118-0x00007FFB38F60000-0x00007FFB38F70000-memory.dmp

Filesize
64KB

Download
memory/796-119-0x00000223E1DF0000-0x00000223E1DF2000-memory.dmp

Filesize
8KB

Download
memory/796-120-0x00000223E1DF0000-0x00000223E1DF2000-memory.dmp

Filesize
8KB

Download
memory/796-121-0x00007FFB38F60000-0x00007FFB38F70000-memory.dmp

Filesize
64KB

Download
memory/796-122-0x00000223E1DF0000-0x00000223E1DF2000-memory.dmp

Filesize
8KB

Download
memory/796-115-0x00007FFB38F60000-0x00007FFB38F70000-memory.dmp

Filesize
64KB

Download
memory/796-117-0x00007FFB38F60000-0x00007FFB38F70000-memory.dmp

Filesize
64KB

Download
memory/796-116-0x00007FFB38F60000-0x00007FFB38F70000-memory.dmp

Filesize
64KB

Download
memory/2920-278-0x0000000000000000-mapping.dmp

Download
memory/3172-283-0x0000000000000000-mapping.dmp

Download
memory/3232-264-0x0000000000000000-mapping.dmp

Download
memory/3976-259-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads