e58cd1fc646d37b9fd8040d9f7f4110bb07cbdadb1f5dd4a55413acacd33807d

General

Target

e58cd1fc646d37b9fd8040d9f7f4110bb07cbdadb1f5dd4a55413acacd33807d.xls
Size

118KB
MD5

0f2bd22e41ca408211f2fcfbf4d05645
SHA1

e396920d9f3ddaa9c1c25325794dc1cc9d5d860f
SHA256

e58cd1fc646d37b9fd8040d9f7f4110bb07cbdadb1f5dd4a55413acacd33807d
SHA512

75de138b42573b73253ca721cc2727ffcf0e0ce4336866e8e952380b3749ec7064a65ae6984ecd0f3d00e8784f40a2e00fe00fd18b78a60b4b54e888aacdd3fb

Score

10^/10

suricata

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://www.cuneytkocas.com/wp-content/VSnofpES1wO2CcVob/

xlm40.dropper

http://towardsun.net/admin/BYGGkrYAnT/

xlm40.dropper

http://k-antiques.jp/wp-includes/SCYdA6TLohYk2/

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	target process
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2884	2428	rundll32.exe	EXCEL.EXE

suricata: ET MALWARE W32/Emotet CnC Beacon 3
suricata: ET MALWARE W32/Emotet CnC Beacon 3
suricata
Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

50 3660 rundll32.exe
52 3660 rundll32.exe
Downloads MZ/PE file
Loads dropped DLL 2 IoCs

Processes:

rundll32.exerundll32.exe

pid process

2884 rundll32.exe
3736 rundll32.exe
Drops file in System32 directory 1 IoCs

Processes:

rundll32.exe

description ioc process

File opened for modification C:\Windows\SysWOW64\Ulbgovcddwzqozil\isosentxedwqs.hog rundll32.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

flow	pid	process
50	3660	rundll32.exe
52	3660	rundll32.exe

pid	process
2884	rundll32.exe
3736	rundll32.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\Ulbgovcddwzqozil\isosentxedwqs.hog	rundll32.exe

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

2428 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

rundll32.exe

pid process

3660 rundll32.exe
3660 rundll32.exe

pid	process
3660	rundll32.exe
3660	rundll32.exe

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
2428	EXCEL.EXE
2428	EXCEL.EXE
2428	EXCEL.EXE
2428	EXCEL.EXE
2428	EXCEL.EXE
2428	EXCEL.EXE
2428	EXCEL.EXE
2428	EXCEL.EXE
2428	EXCEL.EXE
2428	EXCEL.EXE
2428	EXCEL.EXE
2428	EXCEL.EXE

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

EXCEL.EXErundll32.exerundll32.exerundll32.exe

description	pid	process	target process
PID 2428 wrote to memory of 2884	2428	EXCEL.EXE	rundll32.exe
PID 2428 wrote to memory of 2884	2428	EXCEL.EXE	rundll32.exe
PID 2428 wrote to memory of 2884	2428	EXCEL.EXE	rundll32.exe
PID 2884 wrote to memory of 3736	2884	rundll32.exe	rundll32.exe
PID 2884 wrote to memory of 3736	2884	rundll32.exe	rundll32.exe
PID 2884 wrote to memory of 3736	2884	rundll32.exe	rundll32.exe
PID 3736 wrote to memory of 1836	3736	rundll32.exe	rundll32.exe
PID 3736 wrote to memory of 1836	3736	rundll32.exe	rundll32.exe
PID 3736 wrote to memory of 1836	3736	rundll32.exe	rundll32.exe
PID 1836 wrote to memory of 3660	1836	rundll32.exe	rundll32.exe
PID 1836 wrote to memory of 3660	1836	rundll32.exe	rundll32.exe
PID 1836 wrote to memory of 3660	1836	rundll32.exe	rundll32.exe

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\e58cd1fc646d37b9fd8040d9f7f4110bb07cbdadb1f5dd4a55413acacd33807d.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2428

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:2884

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:3736

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Ulbgovcddwzqozil\isosentxedwqs.hog",wzvBBysg
4⤵
- Suspicious use of WriteProcessMemory
PID:1836

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Ulbgovcddwzqozil\isosentxedwqs.hog",DllRegisterServer
5⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
PID:3660

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
ac69c213917817327baf144bf3370734

SHA1
2fe089e63d27cd35b7d0957a15a1e2b585f2d617

SHA256
6a104fdf854ab537ed54edeca3db35a193d156262094e2dc42db511cada7d047

SHA512
c9b7c8bdf79fe8cd313b46c75a8617f412367530f78430120c38728a75092aa9683f3666c5688d47133f6a062cce4bad665530be58db3327df1ae98ab8994de5

Download Submit
\Users\Admin\sun.ocx

MD5
ac69c213917817327baf144bf3370734

SHA1
2fe089e63d27cd35b7d0957a15a1e2b585f2d617

SHA256
6a104fdf854ab537ed54edeca3db35a193d156262094e2dc42db511cada7d047

SHA512
c9b7c8bdf79fe8cd313b46c75a8617f412367530f78430120c38728a75092aa9683f3666c5688d47133f6a062cce4bad665530be58db3327df1ae98ab8994de5

Download Submit
\Users\Admin\sun.ocx

MD5
ac69c213917817327baf144bf3370734

SHA1
2fe089e63d27cd35b7d0957a15a1e2b585f2d617

SHA256
6a104fdf854ab537ed54edeca3db35a193d156262094e2dc42db511cada7d047

SHA512
c9b7c8bdf79fe8cd313b46c75a8617f412367530f78430120c38728a75092aa9683f3666c5688d47133f6a062cce4bad665530be58db3327df1ae98ab8994de5

Download Submit
memory/1836-278-0x0000000000000000-mapping.dmp

Download
memory/2428-118-0x00007FFDCB810000-0x00007FFDCB820000-memory.dmp

Filesize
64KB

Download
memory/2428-120-0x000001E759E40000-0x000001E759E42000-memory.dmp

Filesize
8KB

Download
memory/2428-121-0x000001E759E40000-0x000001E759E42000-memory.dmp

Filesize
8KB

Download
memory/2428-122-0x000001E759E40000-0x000001E759E42000-memory.dmp

Filesize
8KB

Download
memory/2428-119-0x00007FFDCB810000-0x00007FFDCB820000-memory.dmp

Filesize
64KB

Download
memory/2428-115-0x00007FFDCB810000-0x00007FFDCB820000-memory.dmp

Filesize
64KB

Download
memory/2428-117-0x00007FFDCB810000-0x00007FFDCB820000-memory.dmp

Filesize
64KB

Download
memory/2428-116-0x00007FFDCB810000-0x00007FFDCB820000-memory.dmp

Filesize
64KB

Download
memory/2884-261-0x0000000000000000-mapping.dmp

Download
memory/3660-283-0x0000000000000000-mapping.dmp

Download
memory/3736-266-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads