437c8032e578d678d10379c25af38953c41821103fb2d7d25f6a229fdd2bec10

Analysis

max time kernel
149s
max time network
30s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
13-02-2023 22:51

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General

Target

Borrador/Language/ChineseTrad.lng
Size

4KB
MD5

ded65624ae87dc84494f625596e58c2d
SHA1

6d4e7fc5bdfeac77d9a35a5dab34a8750728b78a
SHA256

d467dd9bc2ca9d4c5633b001615e2d6c127a84f16c7f3e95eb76f4549d69b20c
SHA512

ba979453dccb3d07fb3913d9bc1243330aa8ee4cb857043d281be48e471f28dbf296b564c1d02336b089c0e8e712ba131245cfbb26896a458efc67829ba79bfc
SSDEEP

96:rRHSG1pbuak9DMvhuK/gb9o7eJpyTydOLg7ykaRwP5BJ7vmUnd8Ll6EOQaj8w:dHSGfbuak9Dc4Kke3wXV1WOnD

Score

3^/10

Malware Config

Signatures

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies registry class 10 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\.lng	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\lng_auto_file\shell\Read	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\lng_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\lng_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\lng_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\.lng\ = "lng_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\lng_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\lng_auto_file\shell\Read\command	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1932	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1932	AcroRd32.exe
1932	AcroRd32.exe
1932	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2032 wrote to memory of 476	2032	cmd.exe	29
PID 2032 wrote to memory of 476	2032	cmd.exe	29
PID 2032 wrote to memory of 476	2032	cmd.exe	29
PID 476 wrote to memory of 1932	476	rundll32.exe	30
PID 476 wrote to memory of 1932	476	rundll32.exe	30
PID 476 wrote to memory of 1932	476	rundll32.exe	30
PID 476 wrote to memory of 1932	476	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Borrador\Language\ChineseTrad.lng
1⤵
- Suspicious use of WriteProcessMemory
PID:2032
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Borrador\Language\ChineseTrad.lng
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:476
- - 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\Borrador\Language\ChineseTrad.lng"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:1932

Network

MITRE ATT&CK Enterprise v6

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

memory/476-76-0x0000000000000000-mapping.dmp

Download
memory/1932-81-0x0000000000000000-mapping.dmp

Download
memory/1932-82-0x00000000767B1000-0x00000000767B3000-memory.dmp

Filesize
8KB

Download
memory/2032-54-0x000007FEFC451000-0x000007FEFC453000-memory.dmp

Filesize
8KB

Download