cobaltstrike | c57ab7ac7e53a0e17f845eeffec79a0020c421d14ddbb4022ba9e7b33a85f483

General

Target

字节跳动-刘江民.docx.lnk
Size

1KB
MD5

f31b8da15c974e13e3aedc901bd3216a
SHA1

25c23d35ee6f047e5da806dae20f6a0cbda50144
SHA256

68f6b54614242928db3b18d3c6e627f712a34c8c0d398ee987b5c87ec07702c8
SHA512

0e772a66ce676a0fd7298be5cf37826ed219ec9a1cf6ee349d15a0adb6d3607d20642bc5431eca2bb6045fb6e0d9d33ddedbbd76886b5ad2c943b520de9e284a

Score

10^/10

cobaltstrike 100000 backdoor trojan

Malware Config

Extracted

Family

cobaltstrike

Botnet

100000

C2

http://appfile.sit.sf-express.com:80/audiencemanager.js

Attributes

access_type
512
host
appfile.sit.sf-express.com,/audiencemanager.js
http_header1
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
http_header2
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
http_method1
GET
http_method2
POST
jitter
9472
polling_time
10000
port_number
80
sc_process32
%windir%\syswow64\runonce.exe
sc_process64
%windir%\sysnative\runonce.exe
state_machine
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCs75W9nYYyQaEMbnVV5RhGkx2Snve9z+DgkR58zqkTHAMOlsp7F94jRud+ihp3a2VFW1V9BZpsV4bx/EcAOCP/oFO7qy52iWFm9Ygi8DRFpUVs+BUSYOpyPnON5fTPdiKdFpHC4+gYhgxPUa3hm8BoQU1ptzLuctRlBsROnquSdwIDAQABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==
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
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1228 wrote to memory of 2924	1228	cmd.exe	29
PID 1228 wrote to memory of 2924	1228	cmd.exe	29
PID 1228 wrote to memory of 2924	1228	cmd.exe	29
PID 2832 wrote to memory of 2796	2832	explorer.exe	31
PID 2832 wrote to memory of 2796	2832	explorer.exe	31
PID 2832 wrote to memory of 2796	2832	explorer.exe	31
PID 2796 wrote to memory of 2712	2796	o7X7p.exe	32
PID 2796 wrote to memory of 2712	2796	o7X7p.exe	32
PID 2796 wrote to memory of 2712	2796	o7X7p.exe	32

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\字节跳动-刘江民.docx.lnk
1⤵
- Suspicious use of WriteProcessMemory
PID:1228
- C:\Windows\explorer.exe
  "C:\Windows\explorer.exe" ".\其他资料\.__MACOS__\.__MACOS__\._MACOS_\o7X7p.exe"
  2⤵
  PID:2924

C:\Windows\explorer.exe
C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
1⤵
- Suspicious use of WriteProcessMemory
PID:2832
- C:\Users\Admin\AppData\Local\Temp\其他资料\.__MACOS__\.__MACOS__\._MACOS_\o7X7p.exe
  "C:\Users\Admin\AppData\Local\Temp\其他资料\.__MACOS__\.__MACOS__\._MACOS_\o7X7p.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2796
- - C:\Windows\system32\cmd.exe
    cmd ver
    3⤵
    PID:2712

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2796-90-0x0000000029690000-0x00000000298B0000-memory.dmp

Filesize
2.1MB

Download
memory/2796-92-0x0000000029690000-0x00000000298B0000-memory.dmp

Filesize
2.1MB

Download
memory/2796-94-0x0000000029690000-0x00000000298B0000-memory.dmp

Filesize
2.1MB

Download
memory/2796-96-0x0000000029690000-0x00000000298B0000-memory.dmp

Filesize
2.1MB

Download
memory/2796-98-0x0000000029690000-0x00000000298B0000-memory.dmp

Filesize
2.1MB

Download
memory/2796-100-0x0000000029690000-0x00000000298B0000-memory.dmp

Filesize
2.1MB

Download
memory/2796-102-0x0000000029690000-0x00000000298B0000-memory.dmp

Filesize
2.1MB

Download
memory/2796-104-0x0000000029690000-0x00000000298B0000-memory.dmp

Filesize
2.1MB

Download
memory/2796-110-0x0000000029690000-0x00000000298B0000-memory.dmp

Filesize
2.1MB

Download
memory/2796-112-0x000000004F9B0000-0x000000004F9F1000-memory.dmp

Filesize
260KB

Download
memory/2796-113-0x000000004FAC0000-0x000000004FB0F000-memory.dmp

Filesize
316KB

Download
memory/2796-114-0x0000000029690000-0x00000000298B0000-memory.dmp

Filesize
2.1MB

Download

Analysis

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