53fed897bcb0b8f1b42f3b92f0eb4374ec3f3d53467ad4c3a94acd7393314fcc

General

Target

53fed897bcb0b8f1b42f3b92f0eb4374ec3f3d53467ad4c3a94acd7393314fcc.exe
Size

197KB
MD5

32f6ce0c8b7e931112bcf4b28c91e770
SHA1

7aa57948874eaac0f12adbb6c90496dfb7661299
SHA256

53fed897bcb0b8f1b42f3b92f0eb4374ec3f3d53467ad4c3a94acd7393314fcc
SHA512

dbda614dafb36d6f3b7eaafc7e71df57cc52141af4b26d5e7b03070997041ce3cda172ece139b36ff2dacfbdc86e15d1e1aee88b2ada4730e0fc14db5124a294
SSDEEP

3072:UgXdZt9P6D3XJHMB0182vQ+3Y69Bjfjp+RqOlOpzbtvehpM0ZluqLcLe5xPrNoC3:Ue34aB0HXj9+RqOIpzAM0ZFKMyCxUeUG

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2036	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
1360	53fed897bcb0b8f1b42f3b92f0eb4374ec3f3d53467ad4c3a94acd7393314fcc.exe
1360	53fed897bcb0b8f1b42f3b92f0eb4374ec3f3d53467ad4c3a94acd7393314fcc.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\Google = "rundll32.exe C:\\Users\\Admin\\AppData\\Local\\Google\\HiGRDP_CRW.dll,GRDPlugInProc"	53fed897bcb0b8f1b42f3b92f0eb4374ec3f3d53467ad4c3a94acd7393314fcc.exe
Key created	\Registry\User\S-1-5-21-3406023954-474543476-3319432036-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	rundll32.exe
Key created	\Registry\User\S-1-5-21-3406023954-474543476-3319432036-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	53fed897bcb0b8f1b42f3b92f0eb4374ec3f3d53467ad4c3a94acd7393314fcc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1360	53fed897bcb0b8f1b42f3b92f0eb4374ec3f3d53467ad4c3a94acd7393314fcc.exe
2036	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2036	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1360 wrote to memory of 2036	1360	53fed897bcb0b8f1b42f3b92f0eb4374ec3f3d53467ad4c3a94acd7393314fcc.exe	29
PID 1360 wrote to memory of 2036	1360	53fed897bcb0b8f1b42f3b92f0eb4374ec3f3d53467ad4c3a94acd7393314fcc.exe	29
PID 1360 wrote to memory of 2036	1360	53fed897bcb0b8f1b42f3b92f0eb4374ec3f3d53467ad4c3a94acd7393314fcc.exe	29
PID 1360 wrote to memory of 2036	1360	53fed897bcb0b8f1b42f3b92f0eb4374ec3f3d53467ad4c3a94acd7393314fcc.exe	29
PID 1360 wrote to memory of 2036	1360	53fed897bcb0b8f1b42f3b92f0eb4374ec3f3d53467ad4c3a94acd7393314fcc.exe	29
PID 1360 wrote to memory of 2036	1360	53fed897bcb0b8f1b42f3b92f0eb4374ec3f3d53467ad4c3a94acd7393314fcc.exe	29
PID 1360 wrote to memory of 2036	1360	53fed897bcb0b8f1b42f3b92f0eb4374ec3f3d53467ad4c3a94acd7393314fcc.exe	29

C:\Users\Admin\AppData\Local\Temp\53fed897bcb0b8f1b42f3b92f0eb4374ec3f3d53467ad4c3a94acd7393314fcc.exe
"C:\Users\Admin\AppData\Local\Temp\53fed897bcb0b8f1b42f3b92f0eb4374ec3f3d53467ad4c3a94acd7393314fcc.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1360
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Google\HiGRDP_CRW.dll,GRDPlugInProc
  2⤵
  - Deletes itself
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:2036

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Google\HiGRDP_CRW.dll

Filesize
488KB

MD5
e416ab13fd6ed47316cc2e4b396e065e

SHA1
351c527559fa6b936935edc3e208a407f8d0b301

SHA256
e4dcf12ffb74c4ce00fce7d5a805fcea725945983f3f4b58a4fb93c39f0b5a05

SHA512
c29990800547e3c263db1937338c8ab5a65129f9eb99f956ad7dc2e6039f1f6139bf5912f1edb40501390b4e80040dd12fca2bc53b17776743d6f06a0498570e

Download Submit
\Users\Admin\AppData\Local\Temp\nsoD54B.tmp\txwsatcr.dll

Filesize
488KB

MD5
e416ab13fd6ed47316cc2e4b396e065e

SHA1
351c527559fa6b936935edc3e208a407f8d0b301

SHA256
e4dcf12ffb74c4ce00fce7d5a805fcea725945983f3f4b58a4fb93c39f0b5a05

SHA512
c29990800547e3c263db1937338c8ab5a65129f9eb99f956ad7dc2e6039f1f6139bf5912f1edb40501390b4e80040dd12fca2bc53b17776743d6f06a0498570e

Download Submit
\Users\Admin\AppData\Local\Temp\nsoD54C.tmp\System.dll

Filesize
11KB

MD5
c17103ae9072a06da581dec998343fc1

SHA1
b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

SHA256
dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

SHA512
d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

Download Submit
memory/1360-54-0x00000000766F1000-0x00000000766F3000-memory.dmp

Filesize
8KB

Download
memory/1360-57-0x0000000000440000-0x00000000004BB000-memory.dmp

Filesize
492KB

Download
memory/1360-58-0x0000000074500000-0x000000007457B000-memory.dmp

Filesize
492KB

Download
memory/1360-64-0x0000000000440000-0x00000000004BB000-memory.dmp

Filesize
492KB

Download
memory/2036-67-0x0000000010000000-0x000000001007B000-memory.dmp

Filesize
492KB

Download

Analysis

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