3b530ace3209771f676e361ebc54dfc5d992d5069db93d416cd4b60745ccc400

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
07/03/2024, 13:15

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General

Target

Civilhortonoms/Dyretmmersken/Mealybug/Laesning.sko
Size

348KB
MD5

edac2c2f62e371a80143df8caaec5b24
SHA1

0b7e4c090f25b6a0ffdab3e1d4e94ea3a706584b
SHA256

ae0652e2eedf1db5506d11bdf75d677c37fb7896c64435f6afdf9161235a9616
SHA512

aa37fc1656f385b4a18c2cd8edd4c6befec3b9df14fb656bbc831274c4e1708e292e0e60e26470f3159d2ab1819b39594cc854428b65028bc468c43d3d12e3be
SSDEEP

6144:uAnjNQSAw5Htnf4hUAa4bCpMcIZpToALgteXtF0h4cNjo3IWrh9l7LxCgIMtlYk2:Nj0wlWhXaPpMcIZpNgwdF4Njsn7O++

Score

3^/10

Malware Config

Signatures

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

System Information Discovery
T1082

Modifies registry class 9 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\sko_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\sko_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\sko_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\sko_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\sko_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\sko_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\.sko	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\.sko\ = "sko_auto_file"	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2524	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2524	AcroRd32.exe
2524	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1280 wrote to memory of 2556	1280	cmd.exe	29
PID 1280 wrote to memory of 2556	1280	cmd.exe	29
PID 1280 wrote to memory of 2556	1280	cmd.exe	29
PID 2556 wrote to memory of 2524	2556	rundll32.exe	30
PID 2556 wrote to memory of 2524	2556	rundll32.exe	30
PID 2556 wrote to memory of 2524	2556	rundll32.exe	30
PID 2556 wrote to memory of 2524	2556	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Civilhortonoms\Dyretmmersken\Mealybug\Laesning.sko
1⤵
- Suspicious use of WriteProcessMemory
PID:1280
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Civilhortonoms\Dyretmmersken\Mealybug\Laesning.sko
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2556
- - 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\Civilhortonoms\Dyretmmersken\Mealybug\Laesning.sko"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2524

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
ddac41728ffbc7d4513ed0c2fc8a0c6b

SHA1
0a8efb878191413f4ed74593cf7df68d3804e38b

SHA256
b9c06478efbe5c9757bbcd7dc6a169b0f7708c7277d97770d5d442cb459873fa

SHA512
4e2dc4ed1a14d5d811ce589cd5cb10c6c6bc89b9ddb17019e76fea85918fb4ec4c2c4e207660caeb19d8b29bae66d726474922f6f09604ac2f173052e6142fa6

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