b420642be3fb8799c1700185d9a68a7de077fd798ef9ad024f728b5a031fd94c

General

Target

CompensationClaim-68254946-09282021.xls
Size

137KB
MD5

e0574cf808d9b7150bac6b894baec9f0
SHA1

6603fa83dbb84f3a0d35982a37dbc5250699a64a
SHA256

7fddbdbd20255e29207d6765f7c3d19a235be7e55ca6184a76a74c2175da8bf4
SHA512

9f98689c83358a470dd50f9f74fc80147e025acb2b88b3a4c8d100a07b3c159097e56950eeee7a71c490ff2dea85a7fb92b4f354c7d8f3bedb1fb13854f07bb8

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://101.99.90.160/44467.9548384259.dat

xlm40.dropper

http://188.165.62.4/44467.9548384259.dat

xlm40.dropper

http://84.32.188.42/44467.9548384259.dat

Signatures

Process spawned unexpected child process 3 IoCs

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

Processes:

regsvr32.exeregsvr32.exeregsvr32.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	500	808	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	636	808	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3280	808	regsvr32.exe	EXCEL.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

808 EXCEL.EXE
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

EXCEL.EXE

pid process

808 EXCEL.EXE

Suspicious use of SetWindowsHookEx 18 IoCs

Processes:

EXCEL.EXE

pid	process
808	EXCEL.EXE
808	EXCEL.EXE
808	EXCEL.EXE
808	EXCEL.EXE
808	EXCEL.EXE
808	EXCEL.EXE
808	EXCEL.EXE
808	EXCEL.EXE
808	EXCEL.EXE
808	EXCEL.EXE
808	EXCEL.EXE
808	EXCEL.EXE
808	EXCEL.EXE
808	EXCEL.EXE
808	EXCEL.EXE
808	EXCEL.EXE
808	EXCEL.EXE
808	EXCEL.EXE

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 808 wrote to memory of 500	808	EXCEL.EXE	regsvr32.exe
PID 808 wrote to memory of 500	808	EXCEL.EXE	regsvr32.exe
PID 808 wrote to memory of 636	808	EXCEL.EXE	regsvr32.exe
PID 808 wrote to memory of 636	808	EXCEL.EXE	regsvr32.exe
PID 808 wrote to memory of 3280	808	EXCEL.EXE	regsvr32.exe
PID 808 wrote to memory of 3280	808	EXCEL.EXE	regsvr32.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\CompensationClaim-68254946-09282021.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:808

C:\Windows\SYSTEM32\regsvr32.exe
regsvr32 -silent ..\Drezd.red
2⤵
- Process spawned unexpected child process
PID:500

C:\Windows\SYSTEM32\regsvr32.exe
regsvr32 -silent ..\Drezd1.red
2⤵
- Process spawned unexpected child process
PID:636

C:\Windows\SYSTEM32\regsvr32.exe
regsvr32 -silent ..\Drezd2.red
2⤵
- Process spawned unexpected child process
PID:3280

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/500-279-0x0000000000000000-mapping.dmp

Download
memory/636-280-0x0000000000000000-mapping.dmp

Download
memory/808-114-0x00007FF637310000-0x00007FF63A8C6000-memory.dmp

Filesize
53.7MB

Download
memory/808-115-0x00007FF8EBA40000-0x00007FF8EBA50000-memory.dmp

Filesize
64KB

Download
memory/808-116-0x00007FF8EBA40000-0x00007FF8EBA50000-memory.dmp

Filesize
64KB

Download
memory/808-117-0x00007FF8EBA40000-0x00007FF8EBA50000-memory.dmp

Filesize
64KB

Download
memory/808-118-0x00007FF8EBA40000-0x00007FF8EBA50000-memory.dmp

Filesize
64KB

Download
memory/808-121-0x00007FF8EBA40000-0x00007FF8EBA50000-memory.dmp

Filesize
64KB

Download
memory/808-122-0x00007FF90D190000-0x00007FF90E27E000-memory.dmp

Filesize
16.9MB

Download
memory/808-123-0x00007FF90B290000-0x00007FF90D185000-memory.dmp

Filesize
31.0MB

Download
memory/808-276-0x000001B2A9810000-0x000001B2A9814000-memory.dmp

Filesize
16KB

Download
memory/3280-281-0x0000000000000000-mapping.dmp

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads