62c8b0b02dcd3e8159e6b22a95de398a9cb59d7bd1249152498b291bbaee732b

Resubmissions

21-05-2024 15:12

240521-sk9r1aaa52 3

21-05-2024 15:11

240521-skkg4sab5v 3

Analysis

max time kernel
359s
max time network
360s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
21-05-2024 15:11

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General

Target

S2 XP/Data.rsdk
Size

44.3MB
MD5

a534b7ee8d5f359874d6698270be5a8b
SHA1

3f641a25eea2157a8e199570140d29073b0b7e9f
SHA256

3cb1fae4561f6f0bca478e42eb37c3b56fcc16263723389125626e58f945fbd5
SHA512

2564199ddae9b2597c30135355c13a38fe2bec951770c4ae8dd6c10f72e12a56c009bc6c32403e517fcd5fce0ab9f988df6788955f13974817b4ae1b50e63155
SSDEEP

786432:S/jdEvUOei5oeVngizx9pDqeWUDdPYce4Vde8DDpZ8nnYviZOIdLVN:MhEcpi5oedp+eHf/m8DDYn5ZOQLVN

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

Processes:

rundll32.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\.rsdk\ = "rsdk_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\rsdk_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\rsdk_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\rsdk_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\rsdk_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\rsdk_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\rsdk_auto_file\	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\.rsdk	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AcroRd32.exe

pid process

2720 AcroRd32.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

2720 AcroRd32.exe
2720 AcroRd32.exe

pid	process
2720	AcroRd32.exe

pid	process
2720	AcroRd32.exe
2720	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 2868 wrote to memory of 2660	2868	cmd.exe	rundll32.exe
PID 2868 wrote to memory of 2660	2868	cmd.exe	rundll32.exe
PID 2868 wrote to memory of 2660	2868	cmd.exe	rundll32.exe
PID 2660 wrote to memory of 2720	2660	rundll32.exe	AcroRd32.exe
PID 2660 wrote to memory of 2720	2660	rundll32.exe	AcroRd32.exe
PID 2660 wrote to memory of 2720	2660	rundll32.exe	AcroRd32.exe
PID 2660 wrote to memory of 2720	2660	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\S2 XP\Data.rsdk"
1⤵
- Suspicious use of WriteProcessMemory
PID:2868
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\S2 XP\Data.rsdk
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2660
- - 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\S2 XP\Data.rsdk"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2720

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

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

Filesize
3KB

MD5
176f4e6727e965dafce0c24626fe12a4

SHA1
914288aa3f6a6472a04c58dad5688b2a7567492d

SHA256
bef1b7b51504f95b72814998d26bee9e9c92d8c0cafd322288d0b326d3a6b4b7

SHA512
c12d751ebf2b2f2015d21d994bdf58440524ec5dd5c2c063ac96eb01422f39f7df26207cc44a503f88fbff27390860b8dadd8ce22b5bced706df0879ce1b5f6f

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