71d55286d6ff61f51b9a5ffb0eaf05dfaf996dd544df0655ee333f47630e3a9b

Analysis

max time kernel
117s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
22/02/2024, 04:29

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General

Target

icudtl.dat
Size

9.9MB
MD5

c6ae43f9d596f3dd0d86fb3e62a5b5de
SHA1

198b3b4abc0f128398d25c66455c531a7af34a6d
SHA256

00f755664926fda5fda14b87af41097f6ea4b20154f90be65d73717580db26ee
SHA512

3c43e2dcdf037726a94319a147a8bc41a4c0fd66e6b18b3c7c95449912bf875382dde5ec0525dcad6a52e8820b0859caf8fa73cb287283334ec8d06eb3227ec4
SSDEEP

196608:tGzwSv9AAQu1+liXUxCGZHa93Whlw6ZzbSEQF:t3KlQusliXUxCGZHa93Whlw6ZzbSEQF

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-1-5-21-1298544033-3225604241-2703760938-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\dat_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\dat_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\dat_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\dat_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\.dat	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\.dat\ = "dat_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\dat_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\dat_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2552	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2552	AcroRd32.exe
2552	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2856 wrote to memory of 2536	2856	cmd.exe	29
PID 2856 wrote to memory of 2536	2856	cmd.exe	29
PID 2856 wrote to memory of 2536	2856	cmd.exe	29
PID 2536 wrote to memory of 2552	2536	rundll32.exe	30
PID 2536 wrote to memory of 2552	2536	rundll32.exe	30
PID 2536 wrote to memory of 2552	2536	rundll32.exe	30
PID 2536 wrote to memory of 2552	2536	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\icudtl.dat
1⤵
- Suspicious use of WriteProcessMemory
PID:2856
- 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:2536
- - 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:2552

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
28fce2b8e33058f934f93ac0fdad2252

SHA1
bd78c946705861954dbbb401b27109db21e8114d

SHA256
c2ce75433c4f1b8f28f58341e359441f20e6181fa100a104a0681722cc4cf75e

SHA512
f891420fe2a50c1adcf2fa7e286d8600f979919c193fc671c0b1cefef7ff96dca619679be55da1a0fb1c81336d0a73476ef637617f173b3e2e30c23a50c5c178

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