61449feab7bb5877fe19d52c28720d83e3fbfa4a9ee64a380b649a9b1cea8a86

Analysis

max time kernel
122s
max time network
130s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
25-02-2024 15:23

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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-1-5-21-1298544033-3225604241-2703760938-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\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\ = "dat_auto_file"	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_auto_file\shell\Read\command	rundll32.exe
Key created	\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	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\dat_auto_file\shell\Read	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
2488	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2488	AcroRd32.exe
2488	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2968 wrote to memory of 2596	2968	cmd.exe	29
PID 2968 wrote to memory of 2596	2968	cmd.exe	29
PID 2968 wrote to memory of 2596	2968	cmd.exe	29
PID 2596 wrote to memory of 2488	2596	rundll32.exe	30
PID 2596 wrote to memory of 2488	2596	rundll32.exe	30
PID 2596 wrote to memory of 2488	2596	rundll32.exe	30
PID 2596 wrote to memory of 2488	2596	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\icudtl.dat
1⤵
- Suspicious use of WriteProcessMemory
PID:2968
- 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:2596
- - 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:2488

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
e2ad10cbd07e862b664bd771cc371128

SHA1
2a22f0d828a6691c4d248bad262a6b5e750331ef

SHA256
642c16defc14586268d31fea74d291e16a45517cc997c11c814ca39bf494740f

SHA512
e4b340c2ff786427786c326fd3aafaddf1f540549ef4875a953f2510f64a436910dd9533900943e16c6f75e61de7293d9196925cb63857d7a3f23d7cfca5127f

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