cobaltstrike | fbbff9ab15b2fb7b5e2e5cfaf35810edd492df9448ca0d55a74b830724201543

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
428	svchost.exe

Loads dropped DLL 1 IoCs

pid	Process
1064	cvtres.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-1-5-21-3845472200-3839195424-595303356-1000\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 1536 set thread context of 1064	1536	fbbff9ab15b2fb7b5e2e5cfaf35810edd492df9448ca0d55a74b830724201543.exe	27

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1064	cvtres.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1536 wrote to memory of 1064	1536	fbbff9ab15b2fb7b5e2e5cfaf35810edd492df9448ca0d55a74b830724201543.exe	27
PID 1536 wrote to memory of 1064	1536	fbbff9ab15b2fb7b5e2e5cfaf35810edd492df9448ca0d55a74b830724201543.exe	27
PID 1536 wrote to memory of 1064	1536	fbbff9ab15b2fb7b5e2e5cfaf35810edd492df9448ca0d55a74b830724201543.exe	27
PID 1536 wrote to memory of 1064	1536	fbbff9ab15b2fb7b5e2e5cfaf35810edd492df9448ca0d55a74b830724201543.exe	27
PID 1536 wrote to memory of 1064	1536	fbbff9ab15b2fb7b5e2e5cfaf35810edd492df9448ca0d55a74b830724201543.exe	27
PID 1536 wrote to memory of 1064	1536	fbbff9ab15b2fb7b5e2e5cfaf35810edd492df9448ca0d55a74b830724201543.exe	27
PID 1536 wrote to memory of 1064	1536	fbbff9ab15b2fb7b5e2e5cfaf35810edd492df9448ca0d55a74b830724201543.exe	27
PID 1536 wrote to memory of 1064	1536	fbbff9ab15b2fb7b5e2e5cfaf35810edd492df9448ca0d55a74b830724201543.exe	27
PID 1536 wrote to memory of 1064	1536	fbbff9ab15b2fb7b5e2e5cfaf35810edd492df9448ca0d55a74b830724201543.exe	27
PID 1536 wrote to memory of 1064	1536	fbbff9ab15b2fb7b5e2e5cfaf35810edd492df9448ca0d55a74b830724201543.exe	27
PID 1064 wrote to memory of 428	1064	cvtres.exe	30
PID 1064 wrote to memory of 428	1064	cvtres.exe	30
PID 1064 wrote to memory of 428	1064	cvtres.exe	30
PID 1064 wrote to memory of 428	1064	cvtres.exe	30
PID 1064 wrote to memory of 1220	1064	cvtres.exe	31
PID 1064 wrote to memory of 1220	1064	cvtres.exe	31
PID 1064 wrote to memory of 1220	1064	cvtres.exe	31
PID 1064 wrote to memory of 1220	1064	cvtres.exe	31

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:1536
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
  C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
  2⤵
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:1064
- - C:\Users\Admin\AppData\Roaming\WinHost\svchost.exe
    "C:\Users\Admin\AppData\Roaming\WinHost\svchost.exe"
    3⤵
    - Executes dropped EXE
    PID:428
- - C:\Windows\SysWOW64\svchost.exe
    C:\Windows\system32\svchost.exe
    3⤵
    PID:1220

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
31KB

MD5
ed797d8dc2c92401985d162e42ffa450

SHA1
0f02fc517c7facc4baefde4fe9467fb6488ebabe

SHA256
b746362010a101cb5931bc066f0f4d3fc740c02a68c1f37fc3c8e6c87fd7cb1e

SHA512
e831a6ff987f3ef29982da16afad06938b68eddd43c234ba88d1c96a1b5547f2284baf35cbb3a5bfd75e7f0445d14daa014e0ba00b4db72c67f83f0a314c80c2

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

Filesize
31KB

MD5
ed797d8dc2c92401985d162e42ffa450

SHA1
0f02fc517c7facc4baefde4fe9467fb6488ebabe

SHA256
b746362010a101cb5931bc066f0f4d3fc740c02a68c1f37fc3c8e6c87fd7cb1e

SHA512
e831a6ff987f3ef29982da16afad06938b68eddd43c234ba88d1c96a1b5547f2284baf35cbb3a5bfd75e7f0445d14daa014e0ba00b4db72c67f83f0a314c80c2

Download Submit
memory/1064-56-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1064-69-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1064-64-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1064-63-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1064-61-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1064-70-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1064-59-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1064-57-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1536-54-0x0000000076871000-0x0000000076873000-memory.dmp

Filesize
8KB

Download
memory/1536-67-0x0000000074EE0000-0x000000007548B000-memory.dmp

Filesize
5.7MB

Download
memory/1536-55-0x0000000074EE0000-0x000000007548B000-memory.dmp

Filesize
5.7MB

Download

Analysis

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