022728f678d8dcc6cba20147595ed4099e9c98be0582c0f67518d5664e3b8523

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03-03-2024 01:34

240303-by6ttsbe94 10

03-03-2024 01:31

240303-bxkj7sbe62 7

Analysis

max time kernel
145s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
03-03-2024 01:34

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General

Target

Ransomware/CryptoWall.exe
Size

132KB
MD5

919034c8efb9678f96b47a20fa6199f2
SHA1

747070c74d0400cffeb28fbea17b64297f14cfbd
SHA256

e036d68b8f8b7afc6c8b6252876e1e290f11a26d4ad18ac6f310662845b2c734
SHA512

745a81c50bbfd62234edb9788c83a22e0588c5d25c00881901923a02d7096c71ef5f0cd5b73f92ad974e5174de064b0c5ea8044509039aab14b2aed83735a7c4
SSDEEP

3072:naRQpzd/99wen3XgWorw8I3h8LkMvqCgQfBUnPy8L6kssU:nJdTwo30ri3h8LkMvqCgQfBUPy8L6ksP

Score

7^/10

persistence

Malware Config

Signatures

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\12ad1507.exe	explorer.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\12ad150 = "C:\\12ad1507\\12ad1507.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\*2ad150 = "C:\\12ad1507\\12ad1507.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\12ad1507 = "C:\\Users\\Admin\\AppData\\Roaming\\12ad1507.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\*2ad1507 = "C:\\Users\\Admin\\AppData\\Roaming\\12ad1507.exe"	explorer.exe

Looks up external IP address via web service 3 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
24	ip-addr.es
26	ip-addr.es
62	ip-addr.es

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
2516	CryptoWall.exe
4024	explorer.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2516 wrote to memory of 4024	2516	CryptoWall.exe	89
PID 2516 wrote to memory of 4024	2516	CryptoWall.exe	89
PID 2516 wrote to memory of 4024	2516	CryptoWall.exe	89
PID 4024 wrote to memory of 1884	4024	explorer.exe	91
PID 4024 wrote to memory of 1884	4024	explorer.exe	91
PID 4024 wrote to memory of 1884	4024	explorer.exe	91

C:\Users\Admin\AppData\Local\Temp\Ransomware\CryptoWall.exe
"C:\Users\Admin\AppData\Local\Temp\Ransomware\CryptoWall.exe"
1⤵
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2516
- C:\Windows\SysWOW64\explorer.exe
  "C:\Windows\syswow64\explorer.exe"
  2⤵
  - Drops startup file
  - Adds Run key to start application
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:4024
- - C:\Windows\SysWOW64\svchost.exe
    -k netsvcs
    3⤵
    PID:1884

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1884-5-0x00000000003C0000-0x00000000003E5000-memory.dmp

Filesize
148KB

Download
memory/1884-6-0x00000000003C0000-0x00000000003E5000-memory.dmp

Filesize
148KB

Download
memory/1884-11-0x00000000003C0000-0x00000000003E5000-memory.dmp

Filesize
148KB

Download
memory/4024-0-0x0000000000F60000-0x0000000000F85000-memory.dmp

Filesize
148KB

Download
memory/4024-1-0x0000000000F60000-0x0000000000F85000-memory.dmp

Filesize
148KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads