colibri | 45fff4489cc037313de8edf3589515197c184579658921fb06eb6fd4e860253e

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
22/05/2022, 21:30

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General

Target
1400621884.exe
Size 87KB
Sample220522-1cf4qaedcm
SHA256 45fff4489cc037313de8edf3589515197c184579658921fb06eb6fd4e860253e
MD5 cab62deb76880ed5c49abfefa6f7862c
SHA1 c8b358844131c983dd96b1ca74ea1b8d5d34c6a8
SHA512 57c4ef898513b8c9c4e14e053e3d2beac2feb0f676e77577a20bbbde4c921cf830e9a803fd001a43b5441c1edff5a94e3b00837279286f613da3d9402f07ee06
MD5 SHA1 SHA512

Score

10^/10

colibri build1 loader suricata

Malware Config

Extracted

Family

colibri

Version

1.2.0

Botnet

Build1

http://zpltcmgodhvvedxtfcygvbgjkvgvcguygytfigj.cc/gate.php
http://yugyuvyugguitgyuigtfyutdtoghghbbgyv.cx/gate.php

Signatures

Colibri Loader
A loader sold as MaaS first seen in August 2021.
loader colibri
suricata: ET MALWARE Generic gate .php GET with minimal headers
suricata: ET MALWARE Generic gate .php GET with minimal headers
suricata
suricata: ET MALWARE Trojan Generic - POST To gate.php with no accept headers
suricata: ET MALWARE Trojan Generic - POST To gate.php with no accept headers
suricata
suricata: ET MALWARE Trojan Generic - POST To gate.php with no referer
suricata: ET MALWARE Trojan Generic - POST To gate.php with no referer
suricata
suricata: ET MALWARE Win32/Colibri Loader Activity
suricata: ET MALWARE Win32/Colibri Loader Activity
suricata
suricata: ET MALWARE Win32/Colibri Loader Activity M2
suricata: ET MALWARE Win32/Colibri Loader Activity M2
suricata
suricata: ET MALWARE Win32/Colibri Loader Activity M3
suricata: ET MALWARE Win32/Colibri Loader Activity M3
suricata

Executes dropped EXE 2 IoCs

pid	Process
4056	Get-Variable.exe
2908	Get-Variable.exe

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
3680	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4872	powershell.exe
4872	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4872	powershell.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1604 wrote to memory of 3680	1604	1400621884.exe	85
PID 1604 wrote to memory of 3680	1604	1400621884.exe	85
PID 1604 wrote to memory of 3680	1604	1400621884.exe	85
PID 1604 wrote to memory of 4056	1604	1400621884.exe	86
PID 1604 wrote to memory of 4056	1604	1400621884.exe	86
PID 1604 wrote to memory of 4056	1604	1400621884.exe	86
PID 4872 wrote to memory of 2908	4872	powershell.exe	94
PID 4872 wrote to memory of 2908	4872	powershell.exe	94
PID 4872 wrote to memory of 2908	4872	powershell.exe	94

C:\Users\Admin\AppData\Local\Temp\1400621884.exe
"C:\Users\Admin\AppData\Local\Temp\1400621884.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1604
- C:\Windows\SysWOW64\schtasks.exe
  /create /tn COMSurrogate /st 00:00 /du 9999:59 /sc once /ri 1 /f /tr "powershell.exe -windowstyle hidden"
  2⤵
  - Creates scheduled task(s)
  PID:3680
- C:\Users\Admin\AppData\Local\Microsoft\WindowsApps\Get-Variable.exe
  "C:\Users\Admin\AppData\Local\Microsoft\WindowsApps\Get-Variable.exe"
  2⤵
  - Executes dropped EXE
  PID:4056

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -windowstyle hidden
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4872
- C:\Users\Admin\AppData\Local\Microsoft\WindowsApps\Get-Variable.exe
  "C:\Users\Admin\AppData\Local\Microsoft\WindowsApps\Get-Variable.exe" Name host ValueOnly True
  2⤵
  - Executes dropped EXE
  PID:2908

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

Get-Variable.exe

Path C:\Users\Admin\AppData\Local\Microsoft\WindowsApps\Get-Variable.exe
Size 87KB
SHA256 45fff4489cc037313de8edf3589515197c184579658921fb06eb6fd4e860253e
MD5 cab62deb76880ed5c49abfefa6f7862c
SHA1 c8b358844131c983dd96b1ca74ea1b8d5d34c6a8
SHA512 57c4ef898513b8c9c4e14e053e3d2beac2feb0f676e77577a20bbbde4c921cf830e9a803fd001a43b5441c1edff5a94e3b00837279286f613da3d9402f07ee06
SSDEEP 1536:sJurKaokc+1SvLQq9h9nklNIWWJzFQrXksZtH76Fhv0oQJK9tCckHYDko8z36H4Z:sJurKaokQQq9h5klNIWWJzFQrXksZtHb
MD5 SHA1 SHA512 SSDEEP

Submit Download

Get-Variable.exe

Path C:\Users\Admin\AppData\Local\Microsoft\WindowsApps\Get-Variable.exe
Size 87KB
SHA256 45fff4489cc037313de8edf3589515197c184579658921fb06eb6fd4e860253e
MD5 cab62deb76880ed5c49abfefa6f7862c
SHA1 c8b358844131c983dd96b1ca74ea1b8d5d34c6a8
SHA512 57c4ef898513b8c9c4e14e053e3d2beac2feb0f676e77577a20bbbde4c921cf830e9a803fd001a43b5441c1edff5a94e3b00837279286f613da3d9402f07ee06
SSDEEP 1536:sJurKaokc+1SvLQq9h9nklNIWWJzFQrXksZtH76Fhv0oQJK9tCckHYDko8z36H4Z:sJurKaokQQq9h5klNIWWJzFQrXksZtHb
MD5 SHA1 SHA512 SSDEEP

Submit Download

Get-Variable.exe

Path C:\Users\Admin\AppData\Local\Microsoft\WindowsApps\Get-Variable.exe
Size 87KB
SHA256 45fff4489cc037313de8edf3589515197c184579658921fb06eb6fd4e860253e
MD5 cab62deb76880ed5c49abfefa6f7862c
SHA1 c8b358844131c983dd96b1ca74ea1b8d5d34c6a8
SHA512 57c4ef898513b8c9c4e14e053e3d2beac2feb0f676e77577a20bbbde4c921cf830e9a803fd001a43b5441c1edff5a94e3b00837279286f613da3d9402f07ee06
SSDEEP 1536:sJurKaokc+1SvLQq9h9nklNIWWJzFQrXksZtH76Fhv0oQJK9tCckHYDko8z36H4Z:sJurKaokQQq9h5klNIWWJzFQrXksZtHb
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1604-134-0x0000000000CD0000-0x0000000000CE6000-memory.dmp

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memory/2908-140-0x00000000008F0000-0x0000000000906000-memory.dmp

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memory/4056-141-0x00000000008F0000-0x0000000000906000-memory.dmp

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memory/4872-135-0x000001CEC0110000-0x000001CEC0132000-memory.dmp

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memory/4872-136-0x000001CEC0520000-0x000001CEC0564000-memory.dmp

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memory/4872-137-0x000001CEC0570000-0x000001CEC05E6000-memory.dmp

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memory/4872-142-0x00007FF8E6D20000-0x00007FF8E77E1000-memory.dmp

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