0766c61d5d861dd6db71ee8f535e5f405f9d7ae80dfc5c83938e000d2b4ba58a

General

Target

0766c61d5d861dd6db71ee8f535e5f405f9d7ae80dfc5c83938e000d2b4ba58a.xlsm
Size

83KB
MD5

5610c5825e0a6dfdeff609a7892a5248
SHA1

3d51a54040324acc824c1b9beb8cb042e923fb76
SHA256

0766c61d5d861dd6db71ee8f535e5f405f9d7ae80dfc5c83938e000d2b4ba58a
SHA512

81f025d1171ec68e1b67dd57778d8475382a6c70c9815931f9a3e4c24f5dd50d98ff096598669de5c0bb191ab22a7e0e8e6b88ff73a068ef6e12cbb9548d38f0

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://adi.iswks.com/assets/hO1v71pqfNN/

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	3452	912	rundll32.exe	EXCEL.EXE

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

40 3828 rundll32.exe
45 3828 rundll32.exe
Downloads MZ/PE file
Loads dropped DLL 2 IoCs

Processes:

rundll32.exerundll32.exe

pid process

3452 rundll32.exe
3140 rundll32.exe
Drops file in System32 directory 1 IoCs

Processes:

rundll32.exe

description ioc process

File opened for modification C:\Windows\SysWOW64\Xgnbag\crpk.bqn 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
40	3828	rundll32.exe
45	3828	rundll32.exe

pid	process
3452	rundll32.exe
3140	rundll32.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\Xgnbag\crpk.bqn	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

912 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

rundll32.exe

pid process

3828 rundll32.exe
3828 rundll32.exe

pid	process
3828	rundll32.exe
3828	rundll32.exe

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
912	EXCEL.EXE
912	EXCEL.EXE
912	EXCEL.EXE
912	EXCEL.EXE
912	EXCEL.EXE
912	EXCEL.EXE
912	EXCEL.EXE
912	EXCEL.EXE
912	EXCEL.EXE
912	EXCEL.EXE
912	EXCEL.EXE
912	EXCEL.EXE

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

EXCEL.EXErundll32.exerundll32.exerundll32.exe

description	pid	process	target process
PID 912 wrote to memory of 3452	912	EXCEL.EXE	rundll32.exe
PID 912 wrote to memory of 3452	912	EXCEL.EXE	rundll32.exe
PID 912 wrote to memory of 3452	912	EXCEL.EXE	rundll32.exe
PID 3452 wrote to memory of 3140	3452	rundll32.exe	rundll32.exe
PID 3452 wrote to memory of 3140	3452	rundll32.exe	rundll32.exe
PID 3452 wrote to memory of 3140	3452	rundll32.exe	rundll32.exe
PID 3140 wrote to memory of 2252	3140	rundll32.exe	rundll32.exe
PID 3140 wrote to memory of 2252	3140	rundll32.exe	rundll32.exe
PID 3140 wrote to memory of 2252	3140	rundll32.exe	rundll32.exe
PID 2252 wrote to memory of 3828	2252	rundll32.exe	rundll32.exe
PID 2252 wrote to memory of 3828	2252	rundll32.exe	rundll32.exe
PID 2252 wrote to memory of 3828	2252	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\0766c61d5d861dd6db71ee8f535e5f405f9d7ae80dfc5c83938e000d2b4ba58a.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:912

C:\Windows\SysWow64\rundll32.exe
C:\Windows\SysWow64\rundll32.exe ..\wxeu.ocx,D"&"l"&"lR"&"egister"&"Serve"&"r
2⤵
- Process spawned unexpected child process
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3452

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Users\Admin\wxeu.ocx",DllRegisterServer
3⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:3140

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Xgnbag\crpk.bqn",CpiUZDf
4⤵
- Suspicious use of WriteProcessMemory
PID:2252

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Xgnbag\crpk.bqn",DllRegisterServer
5⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
PID:3828

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

3

T1082

Query Registry

2

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\wxeu.ocx
MD5
f1be38af7c5e169951d4ab06bb2e1a44

SHA1
118a4684ccb2149e689c48d3758f8e11a53e2903

SHA256
55758d2fefe3dc6f1f31c4a5f02055dc95303408fcbf9b10a414d680a772ecaa

SHA512
02387fee98cffcd7847f99f8c32d77818c748077ef1742e63c7140da048d96da54ee68da73fd6a7e282fbe85eb32c8e69c5e30c800db3ea1154fbf485f234e32

Download Submit
\Users\Admin\wxeu.ocx
MD5
f1be38af7c5e169951d4ab06bb2e1a44

SHA1
118a4684ccb2149e689c48d3758f8e11a53e2903

SHA256
55758d2fefe3dc6f1f31c4a5f02055dc95303408fcbf9b10a414d680a772ecaa

SHA512
02387fee98cffcd7847f99f8c32d77818c748077ef1742e63c7140da048d96da54ee68da73fd6a7e282fbe85eb32c8e69c5e30c800db3ea1154fbf485f234e32

Download Submit
\Users\Admin\wxeu.ocx
MD5
f1be38af7c5e169951d4ab06bb2e1a44

SHA1
118a4684ccb2149e689c48d3758f8e11a53e2903

SHA256
55758d2fefe3dc6f1f31c4a5f02055dc95303408fcbf9b10a414d680a772ecaa

SHA512
02387fee98cffcd7847f99f8c32d77818c748077ef1742e63c7140da048d96da54ee68da73fd6a7e282fbe85eb32c8e69c5e30c800db3ea1154fbf485f234e32

Download Submit
memory/912-120-0x000002F1D2800000-0x000002F1D2802000-memory.dmp

Filesize
8KB

Download
memory/912-116-0x00007FF89DB10000-0x00007FF89DB20000-memory.dmp

Filesize
64KB

Download
memory/912-119-0x000002F1D2800000-0x000002F1D2802000-memory.dmp

Filesize
8KB

Download
memory/912-121-0x00007FF89DB10000-0x00007FF89DB20000-memory.dmp

Filesize
64KB

Download
memory/912-122-0x000002F1D2800000-0x000002F1D2802000-memory.dmp

Filesize
8KB

Download
memory/912-128-0x00007FF89A3C0000-0x00007FF89A3D0000-memory.dmp

Filesize
64KB

Download
memory/912-129-0x00007FF89A3C0000-0x00007FF89A3D0000-memory.dmp

Filesize
64KB

Download
memory/912-118-0x00007FF89DB10000-0x00007FF89DB20000-memory.dmp

Filesize
64KB

Download
memory/912-117-0x00007FF89DB10000-0x00007FF89DB20000-memory.dmp

Filesize
64KB

Download
memory/912-115-0x00007FF89DB10000-0x00007FF89DB20000-memory.dmp

Filesize
64KB

Download
memory/2252-278-0x0000000000000000-mapping.dmp

Download
memory/3140-266-0x0000000000000000-mapping.dmp

Download
memory/3452-261-0x0000000000000000-mapping.dmp

Download
memory/3828-283-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads