1ce80b2bb2a5f56573ca7b6f662accea56f4b9e0e3052ddec14fe03364c14dfe

Resubmissions

19-07-2024 11:43

240719-nvvnlssera 10

19-07-2024 11:41

19-07-2024 11:40

19-07-2024 11:40

19-07-2024 11:30

Analysis

max time kernel
35s
max time network
37s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
19-07-2024 11:41

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General

Target

Cryp_RAT.rtf
Size

662KB
MD5

1fc2941b70df9dd6cdf4cb82af740fe9
SHA1

e5d18e3487ca2d5037215c0e0ebfaf7ccae1c655
SHA256

44b87df9f68f5a3084c7d80c1c7492ca5209e816a4e83fdbd6e2fcb6f1ff936f
SHA512

d5da156e406093bfd398d78a36962360ed6918d6b96e641843e7eeddbd6fe41c0a1681bf0a4fe9e31be22d7b1e16267e62abafc9c14d1dea223e72f3ef810081
SSDEEP

12288:6NtcndUa0XzmFe4lT+F4qZDGefM4qeF4C:6Oua0XzmFFI+7Z4VT

Score

4^/10

Malware Config

Signatures

Drops file in Windows directory 1 IoCs

Processes:

WINWORD.EXE

description	ioc	Process
File created	C:\Windows\rescache\_merged\2717123927\1590785016.pri	WINWORD.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:

WINWORD.EXE

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WINWORD.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

WINWORD.EXE

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WINWORD.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WINWORD.EXE

NTFS ADS 1 IoCs

Processes:

WINWORD.EXE

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Local\Temp\{6A53C7EA-837A-4DF3-952B-3ED02815B016}\Client.exe:Zone.Identifier	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid	Process
1396	WINWORD.EXE
1396	WINWORD.EXE

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

svchost.exe

description	pid	Process
Token: SeTcbPrivilege	1088	svchost.exe
Token: SeRestorePrivilege	1088	svchost.exe
Token: SeTcbPrivilege	1088	svchost.exe
Token: SeRestorePrivilege	1088	svchost.exe
Token: SeTcbPrivilege	1088	svchost.exe
Token: SeRestorePrivilege	1088	svchost.exe

Suspicious use of SetWindowsHookEx 11 IoCs

Processes:

WINWORD.EXE

pid	Process
1396	WINWORD.EXE
1396	WINWORD.EXE
1396	WINWORD.EXE
1396	WINWORD.EXE
1396	WINWORD.EXE
1396	WINWORD.EXE
1396	WINWORD.EXE
1396	WINWORD.EXE
1396	WINWORD.EXE
1396	WINWORD.EXE
1396	WINWORD.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

WINWORD.EXEsvchost.exe

description	pid	Process	procid_target
PID 1396 wrote to memory of 2452	1396	WINWORD.EXE	78
PID 1396 wrote to memory of 2452	1396	WINWORD.EXE	78
PID 1088 wrote to memory of 4436	1088	svchost.exe	83
PID 1088 wrote to memory of 4436	1088	svchost.exe	83
PID 1088 wrote to memory of 5112	1088	svchost.exe	84
PID 1088 wrote to memory of 5112	1088	svchost.exe	84
PID 1088 wrote to memory of 4192	1088	svchost.exe	85
PID 1088 wrote to memory of 4192	1088	svchost.exe	85

C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\Cryp_RAT.rtf" /o ""
1⤵
- Drops file in Windows directory
- Checks processor information in registry
- Enumerates system info in registry
- NTFS ADS
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1396
- C:\Windows\splwow64.exe
  C:\Windows\splwow64.exe 12288
  2⤵
  PID:2452

\??\c:\windows\system32\svchost.exe
c:\windows\system32\svchost.exe -k localsystemnetworkrestricted -s DeviceAssociationService
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1088
- C:\Windows\system32\dashost.exe
  dashost.exe {9f1a986e-2ad7-445c-89cc285c85f6cc03}
  2⤵
  PID:4436
- C:\Windows\system32\dashost.exe
  dashost.exe {497de5c3-f29a-497c-af7bb9bd64dc6fd9}
  2⤵
  PID:5112
- C:\Windows\system32\dashost.exe
  dashost.exe {3a16de29-fad8-4d06-adc5d288e3b0c941}
  2⤵
  PID:4192

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Content.MSO\317622E6.wmf

Filesize
316B

MD5
95bb648d6eb9265eeaf0f889731b1e23

SHA1
631d60a024835f4e53ceb9d0a987ce52fe517df4

SHA256
9639441a9d36e7e4fda980961b75eeb334540b8cfbcee71eb3cd857e0a838e0c

SHA512
184414ea68092124290049282147070a86172833359404ee26199a36083d720e291d55bb85e4ae1d02504ce841efbc646760e7cc5af4088a253aed7b2665c420

Download Submit
C:\Users\Admin\AppData\Local\Temp\TCDABE6.tmp\gb.xsl

Filesize
262KB

MD5
51d32ee5bc7ab811041f799652d26e04

SHA1
412193006aa3ef19e0a57e16acf86b830993024a

SHA256
6230814bf5b2d554397580613e20681752240ab87fd354ececf188c1eabe0e97

SHA512
5fc5d889b0c8e5ef464b76f0c4c9e61bda59b2d1205ac9417cc74d6e9f989fb73d78b4eb3044a1a1e1f2c00ce1ca1bd6d4d07eeadc4108c7b124867711c31810

Download Submit
memory/1396-16-0x00007FF8AEEC0000-0x00007FF8AF09B000-memory.dmp

Filesize
1.9MB

Download
memory/1396-12-0x00007FF8AEEC0000-0x00007FF8AF09B000-memory.dmp

Filesize
1.9MB

Download
memory/1396-4-0x00007FF8AEF65000-0x00007FF8AEF66000-memory.dmp

Filesize
4KB

Download
memory/1396-20-0x00007FF86B690000-0x00007FF86B6A0000-memory.dmp

Filesize
64KB

Download
memory/1396-8-0x00007FF8AEEC0000-0x00007FF8AF09B000-memory.dmp

Filesize
1.9MB

Download
memory/1396-10-0x00007FF8AEEC0000-0x00007FF8AF09B000-memory.dmp

Filesize
1.9MB

Download
memory/1396-9-0x00007FF8AEEC0000-0x00007FF8AF09B000-memory.dmp

Filesize
1.9MB

Download
memory/1396-25-0x00007FF8AEEC0000-0x00007FF8AF09B000-memory.dmp

Filesize
1.9MB

Download
memory/1396-11-0x00007FF86B690000-0x00007FF86B6A0000-memory.dmp

Filesize
64KB

Download
memory/1396-13-0x00007FF8AEEC0000-0x00007FF8AF09B000-memory.dmp

Filesize
1.9MB

Download
memory/1396-14-0x00007FF8AEEC0000-0x00007FF8AF09B000-memory.dmp

Filesize
1.9MB

Download
memory/1396-15-0x00007FF8AEEC0000-0x00007FF8AF09B000-memory.dmp

Filesize
1.9MB

Download
memory/1396-17-0x00007FF8AEEC0000-0x00007FF8AF09B000-memory.dmp

Filesize
1.9MB

Download
memory/1396-27-0x00007FF8AEEC0000-0x00007FF8AF09B000-memory.dmp

Filesize
1.9MB

Download
memory/1396-0-0x00007FF86EF50000-0x00007FF86EF60000-memory.dmp

Filesize
64KB

Download
memory/1396-19-0x00007FF8AEEC0000-0x00007FF8AF09B000-memory.dmp

Filesize
1.9MB

Download
memory/1396-5-0x00007FF8AEEC0000-0x00007FF8AF09B000-memory.dmp

Filesize
1.9MB

Download
memory/1396-3-0x00007FF86EF50000-0x00007FF86EF60000-memory.dmp

Filesize
64KB

Download
memory/1396-18-0x00007FF8AEEC0000-0x00007FF8AF09B000-memory.dmp

Filesize
1.9MB

Download
memory/1396-30-0x00007FF8AEEC0000-0x00007FF8AF09B000-memory.dmp

Filesize
1.9MB

Download
memory/1396-32-0x00007FF8AEEC0000-0x00007FF8AF09B000-memory.dmp

Filesize
1.9MB

Download
memory/1396-31-0x00007FF8AEEC0000-0x00007FF8AF09B000-memory.dmp

Filesize
1.9MB

Download
memory/1396-29-0x00007FF8AEEC0000-0x00007FF8AF09B000-memory.dmp

Filesize
1.9MB

Download
memory/1396-28-0x00007FF8AEEC0000-0x00007FF8AF09B000-memory.dmp

Filesize
1.9MB

Download
memory/1396-26-0x00007FF8AEEC0000-0x00007FF8AF09B000-memory.dmp

Filesize
1.9MB

Download
memory/1396-1-0x00007FF86EF50000-0x00007FF86EF60000-memory.dmp

Filesize
64KB

Download
memory/1396-2-0x00007FF86EF50000-0x00007FF86EF60000-memory.dmp

Filesize
64KB

Download
memory/1396-736-0x00007FF8AEEC0000-0x00007FF8AF09B000-memory.dmp

Filesize
1.9MB

Download
memory/1396-815-0x00007FF86EF50000-0x00007FF86EF60000-memory.dmp

Filesize
64KB

Download
memory/1396-818-0x00007FF86EF50000-0x00007FF86EF60000-memory.dmp

Filesize
64KB

Download
memory/1396-817-0x00007FF86EF50000-0x00007FF86EF60000-memory.dmp

Filesize
64KB

Download
memory/1396-816-0x00007FF86EF50000-0x00007FF86EF60000-memory.dmp

Filesize
64KB

Download
memory/1396-819-0x00007FF8AEEC0000-0x00007FF8AF09B000-memory.dmp

Filesize
1.9MB

Download