cobaltstrike | 53e261a0864645574be944e7530dee005c6a38dd22d8595aab52959e783385fe

General

Target

绩效考核整改意见/其他信息/.__MACOS__/.__MACOS__/._MACOS_/ds.exe
Size

6.6MB
MD5

512f4350aee7eb50adf509008a3ad3ce
SHA1

b9eb9c56289e835739447925a0c085a9849a8f53
SHA256

64f7a36c01e79cd4b041e8a8607dff06d5b606d36e3dff9cfb5fffa22d14d34c
SHA512

9f8fc1871545abb446e76990c02ea648f3a588e1245f9140e86199a834b49d7410907925d471a4cb255f01176dc56d9099920db8f645938c32c66810cc14f649
SSDEEP

49152:hfvxdjdBT6fQ88jYf89GdJufo0HNoWzSMWPQYH09RU39h6b/tQxFezMZoRZXtSHj:bb4zEsqaMWEr8gQLACJir2wFXk/mol

Score

10^/10

cobaltstrike 100000 backdoor bootkit evasion persistence trojan

Malware Config

Extracted

Family

cobaltstrike

Botnet

100000

C2

http://home.firefoxchina.cn:80/audiencemanager.js

Attributes

access_type
512
host
home.firefoxchina.cn,/audiencemanager.js
http_header1
AAAACgAAAEdBY2NlcHQ6IHRleHQvaHRtbCxhcHBsaWNhdGlvbi94aHRtbCt4bWwsYXBwbGljYXRpb24veG1sO3E9MC45LCovKjtxPTAuOAAAABAAAAAaSG9zdDogc3RhdGljLm1pY3Jvc29mdC5jb20AAAAKAAAAJlJlZmVyZXI6IGh0dHBzOi8vc3RhdGljLm1pY3Jvc29mdC5jb20vAAAACgAAAB5BY2NlcHQtRW5jb2Rpbmc6IGd6aXAsIGRlZmxhdGUAAAAHAAAAAAAAAA0AAAACAAAACF9fbXMtY3Y9AAAABgAAAAZDb29raWUAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=
http_header2
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
http_method1
GET
http_method2
POST
jitter
9472
polling_time
30000
port_number
80
sc_process32
%windir%\syswow64\runonce.exe
sc_process64
%windir%\sysnative\runonce.exe
state_machine
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCTgtebe0cm7Pcf5k+pJW3oVOtEFdoncgt1GOki7jIZvJzh8gS6c2+z7OnS8tKIifIFd5/wXKn6x8l+/8edmBrk9bAeXpGOAJROS9Vcndwj6au5cO1RsbDAXpv39Pd4XPNRxFGinglpSmd8/s+FiTomD2du2byaq7Ngsd/a+taTcwIDAQABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==
unknown1
1.435374848e+09
unknown2
AAAABAAAAAEAAAf+AAAAAgAAIUwAAAACAAAPtQAAAA0AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==
uri
/audiencemanager-v2.js
user_agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4044.62 Safari/537.36
watermark
100000

Signatures

Cobaltstrike
Detected malicious payload which is part of Cobaltstrike.
trojan backdoor cobaltstrike
Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Processes:

ds.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ ds.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	ds.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

ds.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	ds.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	ds.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

ds.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA ds.exe
Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
bootkit persistence

Bootkit
T1542.003

Processes:

ds.exe

description ioc process

File opened for modification \??\PhysicalDrive0 ds.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

ds.exe

pid process

2028 ds.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	ds.exe

description	ioc	process
File opened for modification	\??\PhysicalDrive0	ds.exe

pid	process
2028	ds.exe

C:\Users\Admin\AppData\Local\Temp\绩效考核整改意见\其他信息\.__MACOS__\.__MACOS__\._MACOS_\ds.exe
"C:\Users\Admin\AppData\Local\Temp\绩效考核整改意见\其他信息\.__MACOS__\.__MACOS__\._MACOS_\ds.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Writes to the Master Boot Record (MBR)
- Suspicious use of NtSetInformationThreadHideFromDebugger
PID:2028

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Virtualization/Sandbox Evasion

1

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/2028-0-0x00007FFE3AF70000-0x00007FFE3BADA000-memory.dmp

Filesize
11.4MB

Download
memory/2028-1-0x00007FFE595D0000-0x00007FFE597C5000-memory.dmp

Filesize
2.0MB

Download
memory/2028-3-0x00007FFE3AF70000-0x00007FFE3BADA000-memory.dmp

Filesize
11.4MB

Download
memory/2028-4-0x00007FFE3AF70000-0x00007FFE3BADA000-memory.dmp

Filesize
11.4MB

Download
memory/2028-5-0x00007FFE3AF70000-0x00007FFE3BADA000-memory.dmp

Filesize
11.4MB

Download
memory/2028-6-0x00007FFE3AF70000-0x00007FFE3BADA000-memory.dmp

Filesize
11.4MB

Download
memory/2028-7-0x00007FFE3AF70000-0x00007FFE3BADA000-memory.dmp

Filesize
11.4MB

Download
memory/2028-8-0x0000017BBAFA0000-0x0000017BBAFE1000-memory.dmp

Filesize
260KB

Download
memory/2028-9-0x00007FF7352B0000-0x00007FF73595E000-memory.dmp

Filesize
6.7MB

Download
memory/2028-10-0x00007FFE3AF70000-0x00007FFE3BADA000-memory.dmp

Filesize
11.4MB

Download
memory/2028-12-0x00007FFE595D0000-0x00007FFE597C5000-memory.dmp

Filesize
2.0MB

Download
memory/2028-24-0x00007FFE3AF70000-0x00007FFE3BADA000-memory.dmp

Filesize
11.4MB

Download
memory/2028-25-0x00007FFE3AF70000-0x00007FFE3BADA000-memory.dmp

Filesize
11.4MB

Download

Analysis

Sharing