31e9f88d2343967251e2ef28dfe51eb901ac91fdea16268f1b023e4d00456e51

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
10/05/2024, 09:02

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General

Target
data/flutter_assets/FontManifest.json
Size 2KB
Sample240510-kzzataea4y
SHA256 f9bca0df0391d2c6124fb87cab089ce8aaa902bf25ef7820f7cd128f53ae311a
MD5 e3637cec141ff037b4151edf1c0411cb
SHA1 927b3a2c90ae40706d99162f52bbb6f7fdbdb4ff
SHA512 690056a54bf397799a904a9bed2d1ac8102c05f6d4aa1b4e5018b9466540d23b225b0c9e2039d658127c485ce7f0e1323f0583fe23ccf4ab6adf859c380c3a56
MD5 SHA1 SHA512

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
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\.json\ = "json_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\json_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\json_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\json_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\json_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\json_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\.json	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\json_auto_file\shell\Read\command	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2532	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2532	AcroRd32.exe
2532	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 360 wrote to memory of 2564	360	cmd.exe	29
PID 360 wrote to memory of 2564	360	cmd.exe	29
PID 360 wrote to memory of 2564	360	cmd.exe	29
PID 2564 wrote to memory of 2532	2564	rundll32.exe	30
PID 2564 wrote to memory of 2532	2564	rundll32.exe	30
PID 2564 wrote to memory of 2532	2564	rundll32.exe	30
PID 2564 wrote to memory of 2532	2564	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\data\flutter_assets\FontManifest.json
1⤵
- Suspicious use of WriteProcessMemory
PID:360
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\data\flutter_assets\FontManifest.json
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2564
- - 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\data\flutter_assets\FontManifest.json"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2532

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

Replay Monitor

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Downloads

SharedDataEvents

Path C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents
Size 3KB
SHA256 d7dd62e671b5a2623eb1dca976fd546d3b9d6ae31eb8578d40edc2835a60de9e
MD5 f5849bac7ee0963c19946044e074e1bb
SHA1 76ce0f08518411b855eba8af761b379678e850d9
SHA512 c07cd9a812f73df47542771c8fa33772ca7016ef571d24e8f33658de985f413c02ec7841e55c71b19676c48a70e9def5f72ab7ac219f5680102bbb4271c771bd
MD5 SHA1 SHA512

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