cobaltstrike | fbbff9ab15b2fb7b5e2e5cfaf35810edd492df9448ca0d55a74b830724201543

Analysis

max time kernel
147s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
03-10-2022 23:30

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General

Target

fbbff9ab15b2fb7b5e2e5cfaf35810edd492df9448ca0d55a74b830724201543.exe
Size

156KB
MD5

467941e3cb0b3e1c379eb8ee10f57947
SHA1

9a9a7a9bde0ca1f9f3cab121369d2473e817a03e
SHA256

fbbff9ab15b2fb7b5e2e5cfaf35810edd492df9448ca0d55a74b830724201543
SHA512

437cac30faf4dbbc98d72d804c11ef6289fb3145aefd91f393aa7a41579e1f5be2c87b3b43d142c140561d9af8ce1983ffa6979f84e56fae56d2a376c37efb24
SSDEEP

3072:0s3yXdU7kClJgOEA6YbnVfyE1UirnmcOlq98VGScKtA1Jmtw3ff:0jeVEA6YhfRUq9SGScKsJV3

Score

10^/10

cobaltstrike backdoor persistence trojan

Malware Config

Signatures

Cobaltstrike
Detected malicious payload which is part of Cobaltstrike.
trojan backdoor cobaltstrike

Executes dropped EXE 1 IoCs

pid	Process
220	svchost.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WindowsHost = "C:\\Users\\Admin\\AppData\\Roaming\\WinHost\\svchost.exe"	cvtres.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4624 set thread context of 4780	4624	fbbff9ab15b2fb7b5e2e5cfaf35810edd492df9448ca0d55a74b830724201543.exe	82

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4780	cvtres.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4624 wrote to memory of 4780	4624	fbbff9ab15b2fb7b5e2e5cfaf35810edd492df9448ca0d55a74b830724201543.exe	82
PID 4624 wrote to memory of 4780	4624	fbbff9ab15b2fb7b5e2e5cfaf35810edd492df9448ca0d55a74b830724201543.exe	82
PID 4624 wrote to memory of 4780	4624	fbbff9ab15b2fb7b5e2e5cfaf35810edd492df9448ca0d55a74b830724201543.exe	82
PID 4624 wrote to memory of 4780	4624	fbbff9ab15b2fb7b5e2e5cfaf35810edd492df9448ca0d55a74b830724201543.exe	82
PID 4624 wrote to memory of 4780	4624	fbbff9ab15b2fb7b5e2e5cfaf35810edd492df9448ca0d55a74b830724201543.exe	82
PID 4624 wrote to memory of 4780	4624	fbbff9ab15b2fb7b5e2e5cfaf35810edd492df9448ca0d55a74b830724201543.exe	82
PID 4624 wrote to memory of 4780	4624	fbbff9ab15b2fb7b5e2e5cfaf35810edd492df9448ca0d55a74b830724201543.exe	82
PID 4624 wrote to memory of 4780	4624	fbbff9ab15b2fb7b5e2e5cfaf35810edd492df9448ca0d55a74b830724201543.exe	82
PID 4624 wrote to memory of 4780	4624	fbbff9ab15b2fb7b5e2e5cfaf35810edd492df9448ca0d55a74b830724201543.exe	82
PID 4780 wrote to memory of 220	4780	cvtres.exe	90
PID 4780 wrote to memory of 220	4780	cvtres.exe	90
PID 4780 wrote to memory of 220	4780	cvtres.exe	90
PID 4780 wrote to memory of 348	4780	cvtres.exe	92
PID 4780 wrote to memory of 348	4780	cvtres.exe	92
PID 4780 wrote to memory of 348	4780	cvtres.exe	92

C:\Users\Admin\AppData\Local\Temp\fbbff9ab15b2fb7b5e2e5cfaf35810edd492df9448ca0d55a74b830724201543.exe
"C:\Users\Admin\AppData\Local\Temp\fbbff9ab15b2fb7b5e2e5cfaf35810edd492df9448ca0d55a74b830724201543.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4624
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
  C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:4780
- - C:\Users\Admin\AppData\Roaming\WinHost\svchost.exe
    "C:\Users\Admin\AppData\Roaming\WinHost\svchost.exe"
    3⤵
    - Executes dropped EXE
    PID:220
- - C:\Windows\SysWOW64\svchost.exe
    C:\Windows\system32\svchost.exe
    3⤵
    PID:348

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\WinHost\svchost.exe

Filesize
34KB

MD5
e118330b4629b12368d91b9df6488be0

SHA1
ce90218c7e3b90df2a3409ec253048bb6472c2fd

SHA256
3a0f2936b8c45e8ba3458d69d7859a63844469e698652e15fb56639d32f40cc9

SHA512
ac91c04cb20223dbaaf594440cb778dff36e857921be427c8528ba4c6cdb3e8bf8e71e1ae8af7bde9c04ff5b97b379231625bc1a2b66aba2f98cd340cd8a94b0

Download Submit
C:\Users\Admin\AppData\Roaming\WinHost\svchost.exe

Filesize
34KB

MD5
e118330b4629b12368d91b9df6488be0

SHA1
ce90218c7e3b90df2a3409ec253048bb6472c2fd

SHA256
3a0f2936b8c45e8ba3458d69d7859a63844469e698652e15fb56639d32f40cc9

SHA512
ac91c04cb20223dbaaf594440cb778dff36e857921be427c8528ba4c6cdb3e8bf8e71e1ae8af7bde9c04ff5b97b379231625bc1a2b66aba2f98cd340cd8a94b0

Download Submit
memory/4624-132-0x0000000074C60000-0x0000000075211000-memory.dmp

Filesize
5.7MB

Download
memory/4624-137-0x0000000074C60000-0x0000000075211000-memory.dmp

Filesize
5.7MB

Download
memory/4780-134-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4780-136-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4780-138-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download