cobaltstrike | b9c433908c852b56c65ff1eb22201deffbba76f0024a634e219e96210b076b0e | Triage

Analysis

max time kernel
13s
max time network
105s
platform
windows10_x64
resource
win10v20201028
submitted
15-11-2020 22:49

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General

Target

b9c433908c852b56c65ff1eb22201deffbba76f0024a634e219e96210b076b0e.dll
Size

206KB
MD5

6ae2f326d5731758d5654bd62828ce6c
SHA1

5184041cce425e5756c9543525a2280a9e27e527
SHA256

b9c433908c852b56c65ff1eb22201deffbba76f0024a634e219e96210b076b0e
SHA512

01a42dc09195533d91d1b29e5037a4e059aeb0cad257a6244b8cb0cde30b6e6f2b643e26e5ebf9c4827e8a82e2d6adf1a593c3fbf28557171cb11dd3782caf3b

Score

10^/10

cobaltstrike backdoor trojan

Malware Config

Signatures

Cobaltstrike
Detected malicious payload which is part of Cobaltstrike.
trojan backdoor cobaltstrike
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3344 4784 WerFault.exe rundll32.exe

Suspicious behavior: EnumeratesProcesses 15 IoCs

Processes:

WerFault.exe

pid	process
3344	WerFault.exe
3344	WerFault.exe
3344	WerFault.exe
3344	WerFault.exe
3344	WerFault.exe
3344	WerFault.exe
3344	WerFault.exe
3344	WerFault.exe
3344	WerFault.exe
3344	WerFault.exe
3344	WerFault.exe
3344	WerFault.exe
3344	WerFault.exe
3344	WerFault.exe
3344	WerFault.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

WerFault.exe

description pid process

Token: SeRestorePrivilege 3344 WerFault.exe
Token: SeBackupPrivilege 3344 WerFault.exe
Token: SeDebugPrivilege 3344 WerFault.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 4756 wrote to memory of 4784	4756	rundll32.exe	rundll32.exe
PID 4756 wrote to memory of 4784	4756	rundll32.exe	rundll32.exe
PID 4756 wrote to memory of 4784	4756	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b9c433908c852b56c65ff1eb22201deffbba76f0024a634e219e96210b076b0e.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4756

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b9c433908c852b56c65ff1eb22201deffbba76f0024a634e219e96210b076b0e.dll,#1
2⤵
PID:4784

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4784 -s 656
3⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3344

Network

MITRE ATT&CK Matrix

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Downloads

memory/3344-1-0x0000000004F10000-0x0000000004F11000-memory.dmp

Filesize
4KB

Download
memory/3344-5-0x0000000005880000-0x0000000005881000-memory.dmp

Filesize
4KB

Download
memory/4784-0-0x0000000000000000-mapping.dmp

Download
memory/4784-2-0x0000000000000000-mapping.dmp

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memory/4784-3-0x0000000000000000-mapping.dmp

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memory/4784-4-0x0000000000000000-mapping.dmp

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