ef179f483aaa529e930f32ff5adb5b156cd56488c398797251bb992a5ca19e93

Analysis

max time kernel
151s
max time network
138s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
28-02-2024 04:37

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General

Target

icudtl.dat
Size

10.2MB
MD5

e0f1ad85c0933ecce2e003a2c59ae726
SHA1

a8539fc5a233558edfa264a34f7af6187c3f0d4f
SHA256

f5170aa2b388d23bebf98784dd488a9bcb741470384a6a9a8d7a2638d768defb
SHA512

714ed5ae44dfa4812081b8de42401197c235a4fa05206597f4c7b4170dd37e8360cc75d176399b735c9aec200f5b7d5c81c07b9ab58cbca8dc08861c6814fb28
SSDEEP

196608:hpgPBhORiuQwCliXUxbblHa93Whli6Z86WOH:n8wkDliXUxbblHa93Whli6Z8I

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-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\dat_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\dat_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\dat_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\dat_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\dat_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\.dat	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\.dat\ = "dat_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\dat_auto_file\shell	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
592	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
592	AcroRd32.exe
592	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2720 wrote to memory of 1588	2720	cmd.exe	30
PID 2720 wrote to memory of 1588	2720	cmd.exe	30
PID 2720 wrote to memory of 1588	2720	cmd.exe	30
PID 1588 wrote to memory of 592	1588	rundll32.exe	32
PID 1588 wrote to memory of 592	1588	rundll32.exe	32
PID 1588 wrote to memory of 592	1588	rundll32.exe	32
PID 1588 wrote to memory of 592	1588	rundll32.exe	32

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\icudtl.dat
1⤵
- Suspicious use of WriteProcessMemory
PID:2720
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\icudtl.dat
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1588
- - 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\icudtl.dat"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:592

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
511db4b06b95d3942e0f247664976bc0

SHA1
687fdc6b8aa4ea3194a1f2a75b509b3106c3e1e6

SHA256
9954cde47eacc87af1d1a486349d1389f1e83ea5ae77f46bbf7eb246e85ea746

SHA512
11bc32dd6c896ff43162f556d150dac1fae264cf6921340845e0b68b34652ab9b148ab1bc64cd094525d7e66313af86758130d94b6471a73c979682dc5a443b3

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