Overview
overview
3Static
static
1koalahook-main.zip
windows7-x64
1koalahook-main.zip
windows10-2004-x64
1koalahook-...ignore
windows7-x64
3koalahook-...ignore
windows10-2004-x64
3koalahook-...DME.md
windows7-x64
3koalahook-...DME.md
windows10-2004-x64
3koalahook-...ook.py
windows7-x64
3koalahook-...ook.py
windows10-2004-x64
3koalahook-...ts.txt
windows7-x64
1koalahook-...ts.txt
windows10-2004-x64
1koalahook-...un.bat
windows7-x64
1koalahook-...un.bat
windows10-2004-x64
1koalahook-...NSE.md
windows7-x64
3koalahook-...NSE.md
windows10-2004-x64
3koalahook-...RMS.md
windows7-x64
3koalahook-...RMS.md
windows10-2004-x64
3koalahook-...in.png
windows7-x64
3koalahook-...in.png
windows10-2004-x64
3koalahook-...ge.png
windows7-x64
3koalahook-...ge.png
windows10-2004-x64
3koalahook-...in.png
windows7-x64
3koalahook-...in.png
windows10-2004-x64
3Analysis
- max time kernel
118s - max time network
119s - platform
windows7_x64 - resource
win7-20240221-en - resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system - submitted
19/04/2024, 22:30
Static task
static1
Behavioral task
behavioral1
Sample
koalahook-main.zip
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
koalahook-main.zip
Resource
win10v2004-20240412-en
Behavioral task
behavioral3
Sample
koalahook-main/.gitignore
Resource
win7-20240215-en
Behavioral task
behavioral4
Sample
koalahook-main/.gitignore
Resource
win10v2004-20240412-en
Behavioral task
behavioral5
Sample
koalahook-main/README.md
Resource
win7-20240221-en
Behavioral task
behavioral6
Sample
koalahook-main/README.md
Resource
win10v2004-20240412-en
Behavioral task
behavioral7
Sample
koalahook-main/koalahook.py
Resource
win7-20240221-en
Behavioral task
behavioral8
Sample
koalahook-main/koalahook.py
Resource
win10v2004-20240226-en
Behavioral task
behavioral9
Sample
koalahook-main/requirements.txt
Resource
win7-20240220-en
Behavioral task
behavioral10
Sample
koalahook-main/requirements.txt
Resource
win10v2004-20240412-en
Behavioral task
behavioral11
Sample
koalahook-main/run.bat
Resource
win7-20240221-en
Behavioral task
behavioral12
Sample
koalahook-main/run.bat
Resource
win10v2004-20240412-en
Behavioral task
behavioral13
Sample
koalahook-main/src/license/LICENSE.md
Resource
win7-20240221-en
Behavioral task
behavioral14
Sample
koalahook-main/src/license/LICENSE.md
Resource
win10v2004-20240412-en
Behavioral task
behavioral15
Sample
koalahook-main/src/license/TERMS.md
Resource
win7-20240221-en
Behavioral task
behavioral16
Sample
koalahook-main/src/license/TERMS.md
Resource
win10v2004-20240412-en
Behavioral task
behavioral17
Sample
koalahook-main/src/preview/beforelogin.png
Resource
win7-20240221-en
Behavioral task
behavioral18
Sample
koalahook-main/src/preview/beforelogin.png
Resource
win10v2004-20240412-en
Behavioral task
behavioral19
Sample
koalahook-main/src/preview/image.png
Resource
win7-20231129-en
Behavioral task
behavioral20
Sample
koalahook-main/src/preview/image.png
Resource
win10v2004-20240412-en
Behavioral task
behavioral21
Sample
koalahook-main/src/preview/postlogin.png
Resource
win7-20240221-en
Behavioral task
behavioral22
Sample
koalahook-main/src/preview/postlogin.png
Resource
win10v2004-20240226-en
General
- Target koalahook-main/src/license/TERMS.md
- Size 83B
- Sample240419-2e441aab2t
- SHA256 3cb4ced8fcd7f390ba8b7a1b082f97b082504a75c116d58aed6de1f8d85b22d2
- MD5 cf388e8f90be6052aa23a7ff3901e2ec
- SHA1 cf4b808ce659e4a6a29ffb8b7a9f0c7e273d70c2
- SHA512 d1212c06128493c95d8aaaccd84d7e6456f19685e0343338b81c40564f73431e71a3d099dd9f6dbaff6d4fb000c50cc6e646082197d5087fa7a0ae253b474565
- MD5 SHA1 SHA512
Malware Config
Signatures
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Modifies registry class 9 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\md_auto_file\shell rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\md_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\"" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_Classes\Local Settings rundll32.exe Key created \REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\md_auto_file rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\md_auto_file\ rundll32.exe Key created \REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\.md rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\.md\ = "md_auto_file" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\md_auto_file\shell\Read rundll32.exe Key created \REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\md_auto_file\shell\Read\command rundll32.exe - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2520 AcroRd32.exe - Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2520 AcroRd32.exe 2520 AcroRd32.exe - Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 1652 wrote to memory of 2596 1652 cmd.exe 29 PID 1652 wrote to memory of 2596 1652 cmd.exe 29 PID 1652 wrote to memory of 2596 1652 cmd.exe 29 PID 2596 wrote to memory of 2520 2596 rundll32.exe 30 PID 2596 wrote to memory of 2520 2596 rundll32.exe 30 PID 2596 wrote to memory of 2520 2596 rundll32.exe 30 PID 2596 wrote to memory of 2520 2596 rundll32.exe 30
Processes
-
C:\Windows\system32\cmd.execmd /c C:\Users\Admin\AppData\Local\Temp\koalahook-main\src\license\TERMS.md1⤵
- Suspicious use of WriteProcessMemory
PID:1652 -
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\koalahook-main\src\license\TERMS.md2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2596 -
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\koalahook-main\src\license\TERMS.md"3⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:2520
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents
- Size 3KB
- SHA256 33b09771dfbd8b967c31bae3d7d18dca91f175e0315881078bf24ae9afc194f6
- MD5 b83b648939a2665c4ed970b685a9d7b8
- SHA1 c2a20fa9eaa18243108962aaaedabc84dadcb583
- SHA512 7aad9f2d314d8f342d93ef025b3addd72acf34a856f6c19d2d52060b362760bcee91e2c76a8925606a0004c5ca423a019e5a87f11daf8df8c40a83d71ad8d564
- MD5 SHA1 SHA512