73ff76b45106cd98edabf412d086f2f6f9a60579c0e2546aa2e9264280fadcf3

General

Target

73ff76b45106cd98edabf412d086f2f6f9a60579c0e2546aa2e9264280fadcf3.xlsm
Size

37KB
MD5

dd3d9903f4bc68de97928de632fd8499
SHA1

35d3e2f220d72b25da5e7941ed6e38a267cf6b9d
SHA256

73ff76b45106cd98edabf412d086f2f6f9a60579c0e2546aa2e9264280fadcf3
SHA512

7b1e8a124281e3e733ee87ca289e36b2c4f73865a4f2a066f7dd6e3a43f20abfcda935d25261bc2e9133a3ea3463423508391b8d0c1cbbbfc3a52cf9590f6818
SSDEEP

768:oP2/Mvd5dhTRdixmxE7l0VGpevZCw4QvmUxjfC30+kS4QyoX0Vyuvcc:oP2md5ZymxE7WRXYk4pEVyux

Score

10^/10

discovery

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://sp.mongoso.com/wp-content/pFP2GJ7/

xlm40.dropper

https://thetrendskill.com/wp-content/qDxBsanOsoImjuE5p8kCUI/

Signatures

Process spawned unexpected child process 1 IoCs

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

description	pid	pid_target	Process	procid_target
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2304	836	rundll32.exe	82

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	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

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

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

pid	Process
836	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
836	EXCEL.EXE
836	EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

pid	Process
836	EXCEL.EXE
836	EXCEL.EXE
836	EXCEL.EXE
836	EXCEL.EXE
836	EXCEL.EXE
836	EXCEL.EXE
836	EXCEL.EXE
836	EXCEL.EXE
836	EXCEL.EXE
836	EXCEL.EXE
836	EXCEL.EXE
836	EXCEL.EXE
836	EXCEL.EXE
836	EXCEL.EXE

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 836 wrote to memory of 2304	836	EXCEL.EXE	98
PID 836 wrote to memory of 2304	836	EXCEL.EXE	98
PID 836 wrote to memory of 2304	836	EXCEL.EXE	98

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\73ff76b45106cd98edabf412d086f2f6f9a60579c0e2546aa2e9264280fadcf3.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:836
- C:\Windows\SysWOW64\rundll32.exe
  C:\Windows\SysWOW64\rundll32.exe ..\bestb.ocx,D"&"l"&"l"&"R"&"eg"&"i"&"s"&"t"&"erServer
  2⤵
  - Process spawned unexpected child process
  - System Location Discovery: System Language Discovery
  PID:2304

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\b8ab77100df80ab2.customDestinations-ms

Filesize
1KB

MD5
9c6a97fa88fba8a3560bf477f3590b39

SHA1
f9eace248c8716e342c5bc2b8e9d27fc68c74560

SHA256
6d19ed46905978fac63fa12fd34b2c3e2c02bf26cc4f36d3f60c6680a0ecd81a

SHA512
f7e544abdd0365923ddca28ed1f311461af309c8e3936259dc1027004080bd584958db4b1430672901c82a53e21bcf5a19d6c7d419fc53fc8e6e722cb50e4d90

Download Submit
C:\Users\Admin\bestb.ocx

Filesize
114B

MD5
e89f75f918dbdcee28604d4e09dd71d7

SHA1
f9d9055e9878723a12063b47d4a1a5f58c3eb1e9

SHA256
6dc9c7fc93bb488bb0520a6c780a8d3c0fb5486a4711aca49b4c53fac7393023

SHA512
8df0ab2e3679b64a6174deff4259ae5680f88e3ae307e0ea2dfff88ec4ba14f3477c9fe3a5aa5da3a8e857601170a5108ed75f6d6975958ac7a314e4a336aed0

Download Submit
memory/836-14-0x00007FFFF4EB0000-0x00007FFFF50A5000-memory.dmp

Filesize
2.0MB

Download
memory/836-10-0x00007FFFF4EB0000-0x00007FFFF50A5000-memory.dmp

Filesize
2.0MB

Download
memory/836-4-0x00007FFFB4F30000-0x00007FFFB4F40000-memory.dmp

Filesize
64KB

Download
memory/836-6-0x00007FFFF4EB0000-0x00007FFFF50A5000-memory.dmp

Filesize
2.0MB

Download
memory/836-7-0x00007FFFB4F30000-0x00007FFFB4F40000-memory.dmp

Filesize
64KB

Download
memory/836-5-0x00007FFFF4EB0000-0x00007FFFF50A5000-memory.dmp

Filesize
2.0MB

Download
memory/836-9-0x00007FFFF4EB0000-0x00007FFFF50A5000-memory.dmp

Filesize
2.0MB

Download
memory/836-12-0x00007FFFF4EB0000-0x00007FFFF50A5000-memory.dmp

Filesize
2.0MB

Download
memory/836-13-0x00007FFFB2AB0000-0x00007FFFB2AC0000-memory.dmp

Filesize
64KB

Download
memory/836-8-0x00007FFFF4EB0000-0x00007FFFF50A5000-memory.dmp

Filesize
2.0MB

Download
memory/836-2-0x00007FFFB4F30000-0x00007FFFB4F40000-memory.dmp

Filesize
64KB

Download
memory/836-1-0x00007FFFF4F4D000-0x00007FFFF4F4E000-memory.dmp

Filesize
4KB

Download
memory/836-11-0x00007FFFF4EB0000-0x00007FFFF50A5000-memory.dmp

Filesize
2.0MB

Download
memory/836-16-0x00007FFFB2AB0000-0x00007FFFB2AC0000-memory.dmp

Filesize
64KB

Download
memory/836-15-0x00007FFFF4EB0000-0x00007FFFF50A5000-memory.dmp

Filesize
2.0MB

Download
memory/836-17-0x00007FFFF4EB0000-0x00007FFFF50A5000-memory.dmp

Filesize
2.0MB

Download
memory/836-19-0x00007FFFF4EB0000-0x00007FFFF50A5000-memory.dmp

Filesize
2.0MB

Download
memory/836-18-0x00007FFFF4EB0000-0x00007FFFF50A5000-memory.dmp

Filesize
2.0MB

Download
memory/836-29-0x00007FFFF4EB0000-0x00007FFFF50A5000-memory.dmp

Filesize
2.0MB

Download
memory/836-30-0x00007FFFF4F4D000-0x00007FFFF4F4E000-memory.dmp

Filesize
4KB

Download
memory/836-34-0x00007FFFF4EB0000-0x00007FFFF50A5000-memory.dmp

Filesize
2.0MB

Download
memory/836-3-0x00007FFFB4F30000-0x00007FFFB4F40000-memory.dmp

Filesize
64KB

Download
memory/836-0-0x00007FFFB4F30000-0x00007FFFB4F40000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads