4c39dc4744a0993917117b044891085adf8c6f0be913b189984e1b1ceea358f1

General

Target

4c39dc4744a0993917117b044891085adf8c6f0be913b189984e1b1ceea358f1.xlsm
Size

83KB
MD5

b0b306b576cbe99e91112a16ce40c00e
SHA1

b90ba0b773291ff6e4ec74c438463975f0ad9783
SHA256

4c39dc4744a0993917117b044891085adf8c6f0be913b189984e1b1ceea358f1
SHA512

f2f547ef493bf7c4d70194d4fbbbba60e6f764de15d7858f976b442399be16bbf1c8cb4afc33f460b8659da74f00945a2c19801e3de2262f4aa1ef79f2d0d9aa

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://mammy-chiro.com/case/ZTkBzbz/

xlm40.dropper

http://bluetoothheadsetreview.xyz/wp-includes/xmdHAGgfki/

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	2140	3972	rundll32.exe	EXCEL.EXE

Loads dropped DLL 2 IoCs

Processes:

rundll32.exerundll32.exe

pid process

2140 rundll32.exe
2116 rundll32.exe
Drops file in System32 directory 1 IoCs

Processes:

rundll32.exe

description ioc process

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

System Information Discovery
T1082

pid	process
2140	rundll32.exe
2116	rundll32.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\Teykfa\uqagmbsd.upv	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

3972 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
3972	EXCEL.EXE
3972	EXCEL.EXE
3972	EXCEL.EXE
3972	EXCEL.EXE
3972	EXCEL.EXE
3972	EXCEL.EXE
3972	EXCEL.EXE
3972	EXCEL.EXE
3972	EXCEL.EXE
3972	EXCEL.EXE
3972	EXCEL.EXE
3972	EXCEL.EXE

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

EXCEL.EXErundll32.exerundll32.exe

description	pid	process	target process
PID 3972 wrote to memory of 2140	3972	EXCEL.EXE	rundll32.exe
PID 3972 wrote to memory of 2140	3972	EXCEL.EXE	rundll32.exe
PID 3972 wrote to memory of 2140	3972	EXCEL.EXE	rundll32.exe
PID 2140 wrote to memory of 2116	2140	rundll32.exe	rundll32.exe
PID 2140 wrote to memory of 2116	2140	rundll32.exe	rundll32.exe
PID 2140 wrote to memory of 2116	2140	rundll32.exe	rundll32.exe
PID 2116 wrote to memory of 2108	2116	rundll32.exe	rundll32.exe
PID 2116 wrote to memory of 2108	2116	rundll32.exe	rundll32.exe
PID 2116 wrote to memory of 2108	2116	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\4c39dc4744a0993917117b044891085adf8c6f0be913b189984e1b1ceea358f1.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3972

C:\Windows\SysWow64\rundll32.exe
C:\Windows\SysWow64\rundll32.exe ..\dwa.ocx,D"&"l"&"lR"&"egister"&"Server
2⤵
- Process spawned unexpected child process
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2140

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Users\Admin\dwa.ocx",DllRegisterServer
3⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:2116

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Teykfa\uqagmbsd.upv",BshzICLVOQdCnO
4⤵
PID:2108

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\dwa.ocx

MD5
2e875d94ebfb6d697364e66a762a4872

SHA1
656a0d51153efc8959b5812ef1d40d5d11120044

SHA256
7afba7980127ef4f2f425a792f3d9a9fdbd682bbb085ce0697ea1e0a0f343692

SHA512
888a0705a4d115ad16515ecaef7c1621e4b6e140ee878e53fe2c828f3793c8737e98b6238e7e392dfe62a77086548c815760c590e6e8b8a723afa22edceafe46

Download Submit
\Users\Admin\dwa.ocx

MD5
2e875d94ebfb6d697364e66a762a4872

SHA1
656a0d51153efc8959b5812ef1d40d5d11120044

SHA256
7afba7980127ef4f2f425a792f3d9a9fdbd682bbb085ce0697ea1e0a0f343692

SHA512
888a0705a4d115ad16515ecaef7c1621e4b6e140ee878e53fe2c828f3793c8737e98b6238e7e392dfe62a77086548c815760c590e6e8b8a723afa22edceafe46

Download Submit
\Users\Admin\dwa.ocx

MD5
2e875d94ebfb6d697364e66a762a4872

SHA1
656a0d51153efc8959b5812ef1d40d5d11120044

SHA256
7afba7980127ef4f2f425a792f3d9a9fdbd682bbb085ce0697ea1e0a0f343692

SHA512
888a0705a4d115ad16515ecaef7c1621e4b6e140ee878e53fe2c828f3793c8737e98b6238e7e392dfe62a77086548c815760c590e6e8b8a723afa22edceafe46

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memory/2108-266-0x0000000000000000-mapping.dmp

Download
memory/2116-265-0x0000000002900000-0x0000000002A4A000-memory.dmp

Filesize
1.3MB

Download
memory/2116-262-0x0000000000000000-mapping.dmp

Download
memory/2140-263-0x0000000002AB0000-0x0000000002AD9000-memory.dmp

Filesize
164KB

Download
memory/2140-259-0x0000000000000000-mapping.dmp

Download
memory/3972-122-0x000001C47DE00000-0x000001C47DE02000-memory.dmp

Filesize
8KB

Download
memory/3972-121-0x000001C47DE00000-0x000001C47DE02000-memory.dmp

Filesize
8KB

Download
memory/3972-120-0x000001C47DE00000-0x000001C47DE02000-memory.dmp

Filesize
8KB

Download
memory/3972-119-0x00007FFE91410000-0x00007FFE91420000-memory.dmp

Filesize
64KB

Download
memory/3972-115-0x00007FFE91410000-0x00007FFE91420000-memory.dmp

Filesize
64KB

Download
memory/3972-118-0x00007FFE91410000-0x00007FFE91420000-memory.dmp

Filesize
64KB

Download
memory/3972-117-0x00007FFE91410000-0x00007FFE91420000-memory.dmp

Filesize
64KB

Download
memory/3972-116-0x00007FFE91410000-0x00007FFE91420000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads