c6e946e3b911a2f76689e106c3b64f7b31cdd0b7b0ee67704aabb20eee86f4c2

Analysis

max time kernel
144s
max time network
147s
platform
windows10-1703_x64
resource
win10-20220901-en
resource tags

arch:x64arch:x86image:win10-20220901-enlocale:en-usos:windows10-1703-x64system
submitted
10/11/2022, 09:37

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
c6e946e3b911a2f76689e106c3b64f7b31cdd0b7b0ee67704aabb20eee86f4c2.xls
Size 91KB
Sample221110-llpd5aaehp
SHA256 c6e946e3b911a2f76689e106c3b64f7b31cdd0b7b0ee67704aabb20eee86f4c2
MD5 4ff2b49a71b8d0feb0e4f8b553c8ff70
SHA1 5dd741050dd9322acc16872e4db6cdbeb5dd443f
SHA512 e388ecb4d80411526b7caaeb3d22eeb28acd9fbb8361d03e67e99d23c3d302d46bca0b96f8b1366dbe27e3dd89fd5fa76146be781301c5c2eb8b56d4cb6c8149
SSDEEP 1536:wKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgGbCXuZH4gb4CEn9J4Z/Cs9o2:wKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgO
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

persistence

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper
https://bosny.com/aspnet_client/R50QIOGjmvVlr/
xlm40.dropper
http://navylin.com/autopoisonous/4fZQW/
xlm40.dropper
http://asrani.garudaputih.com/nutabalong/bJYqoUIr99qNfoPDx/
xlm40.dropper
http://db.rikaz.tech/lCx76IlkrBtEsqNFA7/zPYJzpOnzstNOiRHob/

Signatures

Process spawned unexpected child process 4 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	4556	2840	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4388	2840	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4112	2840	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1664	2840	regsvr32.exe	65

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
4556	regsvr32.exe
4388	regsvr32.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RjhQ.dll = "C:\\Windows\\system32\\regsvr32.exe \"C:\\Windows\\system32\\TvipBMuWg\\RjhQ.dll\""	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\LyTAikULnNhxl.dll = "C:\\Windows\\system32\\regsvr32.exe \"C:\\Windows\\system32\\TVSsTWYQl\\LyTAikULnNhxl.dll\""	regsvr32.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 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

pid	Process
2840	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
4556	regsvr32.exe
4556	regsvr32.exe
2300	regsvr32.exe
2300	regsvr32.exe
2300	regsvr32.exe
2300	regsvr32.exe
4388	regsvr32.exe
4388	regsvr32.exe
3992	regsvr32.exe
3992	regsvr32.exe
3992	regsvr32.exe
3992	regsvr32.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
2840	EXCEL.EXE
2840	EXCEL.EXE
2840	EXCEL.EXE
2840	EXCEL.EXE
2840	EXCEL.EXE
2840	EXCEL.EXE
2840	EXCEL.EXE
2840	EXCEL.EXE
2840	EXCEL.EXE
2840	EXCEL.EXE
2840	EXCEL.EXE
2840	EXCEL.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2840 wrote to memory of 4556	2840	EXCEL.EXE	69
PID 2840 wrote to memory of 4556	2840	EXCEL.EXE	69
PID 4556 wrote to memory of 2300	4556	regsvr32.exe	70
PID 4556 wrote to memory of 2300	4556	regsvr32.exe	70
PID 2840 wrote to memory of 4388	2840	EXCEL.EXE	71
PID 2840 wrote to memory of 4388	2840	EXCEL.EXE	71
PID 4388 wrote to memory of 3992	4388	regsvr32.exe	72
PID 4388 wrote to memory of 3992	4388	regsvr32.exe	72
PID 2840 wrote to memory of 4112	2840	EXCEL.EXE	73
PID 2840 wrote to memory of 4112	2840	EXCEL.EXE	73
PID 2840 wrote to memory of 1664	2840	EXCEL.EXE	74
PID 2840 wrote to memory of 1664	2840	EXCEL.EXE	74

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\c6e946e3b911a2f76689e106c3b64f7b31cdd0b7b0ee67704aabb20eee86f4c2.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2840
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\elv1.ooocccxxx
  2⤵
  - Process spawned unexpected child process
  - Loads dropped DLL
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4556
- - C:\Windows\system32\regsvr32.exe
    C:\Windows\system32\regsvr32.exe "C:\Windows\system32\TvipBMuWg\RjhQ.dll"
    3⤵
    - Adds Run key to start application
    - Suspicious behavior: EnumeratesProcesses
    PID:2300
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\elv2.ooocccxxx
  2⤵
  - Process spawned unexpected child process
  - Loads dropped DLL
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4388
- - C:\Windows\system32\regsvr32.exe
    C:\Windows\system32\regsvr32.exe "C:\Windows\system32\TVSsTWYQl\LyTAikULnNhxl.dll"
    3⤵
    - Adds Run key to start application
    - Suspicious behavior: EnumeratesProcesses
    PID:3992
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\elv3.ooocccxxx
  2⤵
  - Process spawned unexpected child process
  PID:4112
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\elv4.ooocccxxx
  2⤵
  - Process spawned unexpected child process
  PID:1664

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

elv1.ooocccxxx

Path C:\Users\Admin\elv1.ooocccxxx
Size 621KB
SHA256 a4b5433bd12965b4f64f0151649df256597f0a8ee78074b82153a84cdb7ebf37
MD5 0f30de5d2cc3bcfc336ab606a13825e9
SHA1 5f3cc386854dd5112d2c1d921f3c0ebca289fd12
SHA512 63483b8ef66471a85e4c762e766a13fb410232d85620080c76593cde44c6152758a94bfa3c0a8396d96e7e2490afb263502a7167c82356bf133732169d87d605
SSDEEP 6144:S6/ptuaN+qWUILr1HRf/9Mu1vHLI7U9XWiagQ30/bP/09Xls9HV6MExbnyDAzlsH:S6/ptu/qerXtU7U9XtZWYobyDAzl+
MD5 SHA1 SHA512 SSDEEP

Submit Download

elv2.ooocccxxx

Path C:\Users\Admin\elv2.ooocccxxx
Size 621KB
SHA256 db52bfb9d0d62ed0d915a8eac2e66b72673394d18faf69e496a4986fa9e38f95
MD5 36ac9d7ebd76748f74333efbc9f36c2b
SHA1 97fa759b0993136f3ab83404b880a5cb8c41a6cc
SHA512 cc04988e7df58381bd8c871e283e12f144919966db1fb8214da18ca1bc70a6f1e95c218f2eb8b9c360d9bb5351afd0bdd6a9bfca3fd7f207ee0ba2d7c9130f7d
SSDEEP 6144:S6/ptuaN+qWUILr1HRf/9Mu1vHLI7U9XWi7gQ30/bP/09Xls9HV6MExbnyDAzlsH:S6/ptu/qerXtU7U9XCZWYobyDAzl+
MD5 SHA1 SHA512 SSDEEP

Submit Download

elv1.ooocccxxx

Path \Users\Admin\elv1.ooocccxxx
Size 621KB
SHA256 a4b5433bd12965b4f64f0151649df256597f0a8ee78074b82153a84cdb7ebf37
MD5 0f30de5d2cc3bcfc336ab606a13825e9
SHA1 5f3cc386854dd5112d2c1d921f3c0ebca289fd12
SHA512 63483b8ef66471a85e4c762e766a13fb410232d85620080c76593cde44c6152758a94bfa3c0a8396d96e7e2490afb263502a7167c82356bf133732169d87d605
SSDEEP 6144:S6/ptuaN+qWUILr1HRf/9Mu1vHLI7U9XWiagQ30/bP/09Xls9HV6MExbnyDAzlsH:S6/ptu/qerXtU7U9XtZWYobyDAzl+
MD5 SHA1 SHA512 SSDEEP

Submit Download

elv2.ooocccxxx

Path \Users\Admin\elv2.ooocccxxx
Size 621KB
SHA256 db52bfb9d0d62ed0d915a8eac2e66b72673394d18faf69e496a4986fa9e38f95
MD5 36ac9d7ebd76748f74333efbc9f36c2b
SHA1 97fa759b0993136f3ab83404b880a5cb8c41a6cc
SHA512 cc04988e7df58381bd8c871e283e12f144919966db1fb8214da18ca1bc70a6f1e95c218f2eb8b9c360d9bb5351afd0bdd6a9bfca3fd7f207ee0ba2d7c9130f7d
SSDEEP 6144:S6/ptuaN+qWUILr1HRf/9Mu1vHLI7U9XWi7gQ30/bP/09Xls9HV6MExbnyDAzlsH:S6/ptu/qerXtU7U9XCZWYobyDAzl+
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/2840-132-0x00007FFB8FCB0000-0x00007FFB8FCC0000-memory.dmp

Download

memory/2840-133-0x00007FFB8FCB0000-0x00007FFB8FCC0000-memory.dmp

Download

memory/2840-123-0x00007FFB934E0000-0x00007FFB934F0000-memory.dmp

Download

memory/2840-122-0x00007FFB934E0000-0x00007FFB934F0000-memory.dmp

Download

memory/2840-121-0x00007FFB934E0000-0x00007FFB934F0000-memory.dmp

Download

memory/2840-120-0x00007FFB934E0000-0x00007FFB934F0000-memory.dmp

Download