cobaltstrike | fc815124dc2b846eb3215b2f91816f5d1c6f9a91ad34fda37dfee97b20f8f409

General

Target

fc815124dc2b846eb3215b2f91816f5d1c6f9a91ad34fda37dfee97b20f8f409.exe
Size

1.8MB
MD5

41b00fa23fb3b79db9203028ea9d03d4
SHA1

2bf0aedc99774acdff729b757ec057480cc004d3
SHA256

fc815124dc2b846eb3215b2f91816f5d1c6f9a91ad34fda37dfee97b20f8f409
SHA512

b4cacc9b3bef3a40335263ef24b49026f8b68e83fd685f6c5e397d2ee6846ea437fdca8888ef1677464d3c6026cd53c5fe1ddd0e1e4f36d4b565779c1881202d
SSDEEP

24576:LcGviP2CcmpREm3Tpj7juvMuY179aA82wlvCxVaIr7Fq5sMxn8ZiF35M8KD1vPl:L0rgDSw+sxPA8KD11

Score

10^/10

cobaltstrike 100000 backdoor trojan

Malware Config

Extracted

Family

cobaltstrike

Botnet

100000

C2

http://cache.jquerysource.co:443/jquery-3.3.0.min.js

Attributes

access_type
512
beacon_type
2048
host
cache.jquerysource.co,/jquery-3.3.0.min.js
http_header1
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
http_header2
AAAACgAAAEdBY2NlcHQ6IHRleHQvaHRtbCxhcHBsaWNhdGlvbi94aHRtbCt4bWwsYXBwbGljYXRpb24veG1sO3E9MC45LCovKjtxPTAuOAAAAAoAAAAkUmVmZXJlcjogaHR0cDovL3JlbGVhc2VzLmpxdWVyeS5jb20vAAAABwAAAAAAAAADAAAAAgAAAAlKU0VTU0lPTj0AAAAGAAAABkNvb2tpZQAAAAcAAAABAAAAAwAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=
http_method1
GET
http_method2
POST
jitter
9472
polling_time
10000
port_number
443
sc_process32
%windir%\syswow64\dllhost.exe
sc_process64
%windir%\sysnative\dllhost.exe
state_machine
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCmQEPSLVuoOihACFPRnPSA3ftXYZ5SROYUUuItwE4kyXr+Bf8AXVqBnXaGIG9WpHAq9W+MzS6EhuMVG3U2Od8d77hCK6QAEFRCBiVHE5/jyjCR0FbJyrmVm1Uzbfqae2vVQ+HwGRFQhdwFvj7upXuaEZmO+D0S5U7Rfo3p7eNozQIDAQABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==
unknown1
4.16770176e+09
unknown2
AAAABAAAAAEAAAXyAAAAAgAAAFMAAAACAAAPWwAAAAMAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==
uri
/jquery-3.3.1.min.js
user_agent
Mozilla/5.0 (Windows NT) AppleWebKit/537.36 (KHTML, like Gecko, Efficiently) Safari/537.36
watermark
100000

Signatures

Cobaltstrike
Detected malicious payload which is part of Cobaltstrike.
trojan backdoor cobaltstrike
Executes dropped EXE 1 IoCs

Processes:

backdoor.exe

pid process

2624 backdoor.exe

pid	process
2624	backdoor.exe

Loads dropped DLL 2 IoCs

Processes:

fc815124dc2b846eb3215b2f91816f5d1c6f9a91ad34fda37dfee97b20f8f409.exe

pid	process
2832	fc815124dc2b846eb3215b2f91816f5d1c6f9a91ad34fda37dfee97b20f8f409.exe
2832	fc815124dc2b846eb3215b2f91816f5d1c6f9a91ad34fda37dfee97b20f8f409.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AcroRd32.exe

pid process

2524 AcroRd32.exe
Suspicious behavior: RenamesItself 1 IoCs

Processes:

fc815124dc2b846eb3215b2f91816f5d1c6f9a91ad34fda37dfee97b20f8f409.exe

pid process

2832 fc815124dc2b846eb3215b2f91816f5d1c6f9a91ad34fda37dfee97b20f8f409.exe
Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

AcroRd32.exe

pid process

2524 AcroRd32.exe
2524 AcroRd32.exe
2524 AcroRd32.exe
2524 AcroRd32.exe

pid	process
2524	AcroRd32.exe

pid	process
2524	AcroRd32.exe
2524	AcroRd32.exe
2524	AcroRd32.exe
2524	AcroRd32.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

fc815124dc2b846eb3215b2f91816f5d1c6f9a91ad34fda37dfee97b20f8f409.execmd.exe

description	pid	process	target process
PID 2832 wrote to memory of 2172	2832	fc815124dc2b846eb3215b2f91816f5d1c6f9a91ad34fda37dfee97b20f8f409.exe	cmd.exe
PID 2832 wrote to memory of 2172	2832	fc815124dc2b846eb3215b2f91816f5d1c6f9a91ad34fda37dfee97b20f8f409.exe	cmd.exe
PID 2832 wrote to memory of 2172	2832	fc815124dc2b846eb3215b2f91816f5d1c6f9a91ad34fda37dfee97b20f8f409.exe	cmd.exe
PID 2832 wrote to memory of 2172	2832	fc815124dc2b846eb3215b2f91816f5d1c6f9a91ad34fda37dfee97b20f8f409.exe	cmd.exe
PID 2832 wrote to memory of 2624	2832	fc815124dc2b846eb3215b2f91816f5d1c6f9a91ad34fda37dfee97b20f8f409.exe	backdoor.exe
PID 2832 wrote to memory of 2624	2832	fc815124dc2b846eb3215b2f91816f5d1c6f9a91ad34fda37dfee97b20f8f409.exe	backdoor.exe
PID 2832 wrote to memory of 2624	2832	fc815124dc2b846eb3215b2f91816f5d1c6f9a91ad34fda37dfee97b20f8f409.exe	backdoor.exe
PID 2832 wrote to memory of 2624	2832	fc815124dc2b846eb3215b2f91816f5d1c6f9a91ad34fda37dfee97b20f8f409.exe	backdoor.exe
PID 2172 wrote to memory of 2524	2172	cmd.exe	AcroRd32.exe
PID 2172 wrote to memory of 2524	2172	cmd.exe	AcroRd32.exe
PID 2172 wrote to memory of 2524	2172	cmd.exe	AcroRd32.exe
PID 2172 wrote to memory of 2524	2172	cmd.exe	AcroRd32.exe

C:\Users\Admin\AppData\Local\Temp\fc815124dc2b846eb3215b2f91816f5d1c6f9a91ad34fda37dfee97b20f8f409.exe
"C:\Users\Admin\AppData\Local\Temp\fc815124dc2b846eb3215b2f91816f5d1c6f9a91ad34fda37dfee97b20f8f409.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:2832

C:\Windows\SysWOW64\cmd.exe
cmd " /c " C:\Users\Admin\AppData\Local\Temp\小林的简历.pdf
2⤵
- Suspicious use of WriteProcessMemory
PID:2172

C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
"C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\小林的简历.pdf"
3⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:2524

C:\Users\Public\backdoor.exe
C:\Users\Public\backdoor.exe
2⤵
- Executes dropped EXE
PID:2624

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\小林的简历.pdf
Filesize
130KB

MD5
fc5f31eb71eb2020241657580845e3e3

SHA1
4de78818457a9d5049c7f5bbf03dc1837da62554

SHA256
4b9f8b59ccaa105db2ea0e5c5601cbb4779e7ce286b90404f6dd1cfa76e78b32

SHA512
7ff3f6be060a57058e4d4764075d44aee6aa94e7cff531a0ce988f312d00e8b1dbc9c4969171f5d71dd1d458ebb8788d515822fab39d77bf01cb6424c9fd6fed

Download Submit
C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents
Filesize
3KB

MD5
ef798b2c25564fc5bcda24f6b9ee1043

SHA1
3db1d7a1890d8077e42466c7e1a64bff0dea8bde

SHA256
417730444c08a212cd7dc63afc72f83218ec20700eedb3a6aec30a1ae5e77a2f

SHA512
e72ea0a8e4eabff69496078d2a8fe7f5b373082aa5aaabfb47b3fc7f355cee7e3ba7a27fb619ad55d3d68260a14aec31ef6598be1a8f30ae74ba82259e43d9b8

Download Submit
C:\Users\Public\backdoor.exe
Filesize
281KB

MD5
d742c33d6497d614ded13df915c2fd91

SHA1
8075b81c6c08afec7ba00b1c78187d9db439c643

SHA256
3ea45fb61da83cc278d27faf487c976af30e86fa5c3e3dccb4511e4ee82c9a06

SHA512
397fd6cf5d1064fb6081bc35a71180bf3f3abcc106a511069db3e4b5afc95a912fad277201dba781272b77d0056cbcc5d6cc87bcda95199386a527e9069e164d

Download Submit
\Users\Public\backdoor.exe
Filesize
281KB

MD5
d742c33d6497d614ded13df915c2fd91

SHA1
8075b81c6c08afec7ba00b1c78187d9db439c643

SHA256
3ea45fb61da83cc278d27faf487c976af30e86fa5c3e3dccb4511e4ee82c9a06

SHA512
397fd6cf5d1064fb6081bc35a71180bf3f3abcc106a511069db3e4b5afc95a912fad277201dba781272b77d0056cbcc5d6cc87bcda95199386a527e9069e164d

Download Submit
\Users\Public\backdoor.exe
Filesize
281KB

MD5
d742c33d6497d614ded13df915c2fd91

SHA1
8075b81c6c08afec7ba00b1c78187d9db439c643

SHA256
3ea45fb61da83cc278d27faf487c976af30e86fa5c3e3dccb4511e4ee82c9a06

SHA512
397fd6cf5d1064fb6081bc35a71180bf3f3abcc106a511069db3e4b5afc95a912fad277201dba781272b77d0056cbcc5d6cc87bcda95199386a527e9069e164d

Download Submit
memory/2624-33-0x0000000000450000-0x0000000000491000-memory.dmp

Filesize
260KB

Download
memory/2624-34-0x0000000000A50000-0x0000000000EC2000-memory.dmp

Filesize
4.4MB

Download
memory/2624-36-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

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