e1f0eb778a09fec529aa7aff9d665828b18007c8e52d62565a552f606c04442f

General

Target

e1f0eb778a09fec529aa7aff9d665828b18007c8e52d62565a552f606c04442f.xlsm
Size

83KB
MD5

a9aea9d70fa64583449e1719825a5f0d
SHA1

84f0ef7106464cedb4f1d4665f5c64897ba087e6
SHA256

e1f0eb778a09fec529aa7aff9d665828b18007c8e52d62565a552f606c04442f
SHA512

f65dfbaa0d55e0402f4cb02795b1d9e7ef7c539832e90127f518e28bfbbb3f53a54aff6d2d8f883235b45250af0ef7afcfa1cc086a01380d23936f636994752a

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://badmakeup.biz/dhl/3ez4GMS65Gk6Bgxd/

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	2104	3948	rundll32.exe	EXCEL.EXE

Blocklisted process makes network request 4 IoCs

Processes:

rundll32.exe

flow pid process

47 3808 rundll32.exe
48 3808 rundll32.exe
49 3808 rundll32.exe
51 3808 rundll32.exe
Downloads MZ/PE file
Loads dropped DLL 2 IoCs

Processes:

rundll32.exerundll32.exe

pid process

2104 rundll32.exe
3604 rundll32.exe
Drops file in System32 directory 1 IoCs

Processes:

rundll32.exe

description ioc process

File opened for modification C:\Windows\SysWOW64\Uifbecqhaeblaj\gzyslzwlei.gak 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
47	3808	rundll32.exe
48	3808	rundll32.exe
49	3808	rundll32.exe
51	3808	rundll32.exe

pid	process
2104	rundll32.exe
3604	rundll32.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\Uifbecqhaeblaj\gzyslzwlei.gak	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

3948 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

rundll32.exe

pid process

3808 rundll32.exe
3808 rundll32.exe

pid	process
3808	rundll32.exe
3808	rundll32.exe

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
3948	EXCEL.EXE
3948	EXCEL.EXE
3948	EXCEL.EXE
3948	EXCEL.EXE
3948	EXCEL.EXE
3948	EXCEL.EXE
3948	EXCEL.EXE
3948	EXCEL.EXE
3948	EXCEL.EXE
3948	EXCEL.EXE
3948	EXCEL.EXE
3948	EXCEL.EXE

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

EXCEL.EXErundll32.exerundll32.exerundll32.exe

description	pid	process	target process
PID 3948 wrote to memory of 2104	3948	EXCEL.EXE	rundll32.exe
PID 3948 wrote to memory of 2104	3948	EXCEL.EXE	rundll32.exe
PID 3948 wrote to memory of 2104	3948	EXCEL.EXE	rundll32.exe
PID 2104 wrote to memory of 3604	2104	rundll32.exe	rundll32.exe
PID 2104 wrote to memory of 3604	2104	rundll32.exe	rundll32.exe
PID 2104 wrote to memory of 3604	2104	rundll32.exe	rundll32.exe
PID 3604 wrote to memory of 1200	3604	rundll32.exe	rundll32.exe
PID 3604 wrote to memory of 1200	3604	rundll32.exe	rundll32.exe
PID 3604 wrote to memory of 1200	3604	rundll32.exe	rundll32.exe
PID 1200 wrote to memory of 3808	1200	rundll32.exe	rundll32.exe
PID 1200 wrote to memory of 3808	1200	rundll32.exe	rundll32.exe
PID 1200 wrote to memory of 3808	1200	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\e1f0eb778a09fec529aa7aff9d665828b18007c8e52d62565a552f606c04442f.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3948

C:\Windows\SysWow64\rundll32.exe
C:\Windows\SysWow64\rundll32.exe ..\erum.ocx,D"&"l"&"lR"&"egister"&"Serve"&"r
2⤵
- Process spawned unexpected child process
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2104

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Users\Admin\erum.ocx",DllRegisterServer
3⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:3604

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Uifbecqhaeblaj\gzyslzwlei.gak",TNyGBCwbA
4⤵
- Suspicious use of WriteProcessMemory
PID:1200

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Uifbecqhaeblaj\gzyslzwlei.gak",DllRegisterServer
5⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
PID:3808

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\erum.ocx
MD5
da7a35694cd0cd8a9ee28388ccf01e89

SHA1
2ba28388084810265f7ffebb45b06b4517974124

SHA256
6bde58d8784af63268e585d93db3c1bec2c043a53e0a8981e6b93cd1a614f840

SHA512
613576f993bf16c547d04b496ad3a1597730702fc6ca745dfe8e78f02bc143920a1902dc2fd410b4e1932fc66b33d87276844c3ad1cb7e640c1e82215e263914

Download Submit
\Users\Admin\erum.ocx
MD5
da7a35694cd0cd8a9ee28388ccf01e89

SHA1
2ba28388084810265f7ffebb45b06b4517974124

SHA256
6bde58d8784af63268e585d93db3c1bec2c043a53e0a8981e6b93cd1a614f840

SHA512
613576f993bf16c547d04b496ad3a1597730702fc6ca745dfe8e78f02bc143920a1902dc2fd410b4e1932fc66b33d87276844c3ad1cb7e640c1e82215e263914

Download Submit
\Users\Admin\erum.ocx
MD5
da7a35694cd0cd8a9ee28388ccf01e89

SHA1
2ba28388084810265f7ffebb45b06b4517974124

SHA256
6bde58d8784af63268e585d93db3c1bec2c043a53e0a8981e6b93cd1a614f840

SHA512
613576f993bf16c547d04b496ad3a1597730702fc6ca745dfe8e78f02bc143920a1902dc2fd410b4e1932fc66b33d87276844c3ad1cb7e640c1e82215e263914

Download Submit
memory/1200-279-0x0000000000000000-mapping.dmp

Download
memory/2104-261-0x0000000000000000-mapping.dmp

Download
memory/3604-266-0x0000000000000000-mapping.dmp

Download
memory/3808-283-0x0000000000000000-mapping.dmp

Download
memory/3948-118-0x00007FFF06850000-0x00007FFF06860000-memory.dmp

Filesize
64KB

Download
memory/3948-122-0x0000021CD4F20000-0x0000021CD4F22000-memory.dmp

Filesize
8KB

Download
memory/3948-121-0x0000021CD4F20000-0x0000021CD4F22000-memory.dmp

Filesize
8KB

Download
memory/3948-120-0x0000021CD4F20000-0x0000021CD4F22000-memory.dmp

Filesize
8KB

Download
memory/3948-119-0x00007FFF06850000-0x00007FFF06860000-memory.dmp

Filesize
64KB

Download
memory/3948-115-0x00007FFF06850000-0x00007FFF06860000-memory.dmp

Filesize
64KB

Download
memory/3948-117-0x00007FFF06850000-0x00007FFF06860000-memory.dmp

Filesize
64KB

Download
memory/3948-116-0x00007FFF06850000-0x00007FFF06860000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads