djvu | 63feb06b82ab8b1e98679b303f91a6231e551fbbf01cc4bc48bfba5980f30d33

General

Target

3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe
Size

814KB
MD5

293d130d2a76caf1890cd4e14b235bfb
SHA1

68f3bc6281107181de6f7f0e22ceebe1d478d038
SHA256

3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab
SHA512

4d8d15f5a939f143bdb88fdc204fd8a51b72dd045a5731b4b105f2cab0fa4f13de0a08df1115948857f42670d82d31cae6cb411987033af5af87b60e2722af14
SSDEEP

24576:8uJI75bMVNiwFQ/fG1mW4CwZWzVlIlwCF:8uJNNioxACwAVlSz

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://acacaca.org/fhsgtsspen6/get.php

Attributes

extension
.vveo
offline_id
rE5LpDv2ftYRXAo7bC18EpzfRMTHSGjgfyIMfZt1
payload_url
http://rgyui.top/dl/build2.exe

http://acacaca.org/files/1/build3.exe
ransomnote
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rsa_pubkey.plain

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral2/memory/2276-2-0x0000000002420000-0x000000000253B000-memory.dmp	family_djvu
behavioral2/memory/832-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/832-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/832-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/832-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/832-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1772-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1772-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1772-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Djvu family
djvu

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1376	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\64428d47-0f62-475c-8d86-07d04308ca11\\3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe\" --AutoStart"	3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe

Looks up external IP address via web service 2 IoCs

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

flow	ioc
13	api.2ip.ua
14	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2276 set thread context of 832	2276	3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe	82
PID 824 set thread context of 1772	824	3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe	86

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3852	1772	WerFault.exe	86

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
832	3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe
832	3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2276 wrote to memory of 832	2276	3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe	82
PID 2276 wrote to memory of 832	2276	3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe	82
PID 2276 wrote to memory of 832	2276	3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe	82
PID 2276 wrote to memory of 832	2276	3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe	82
PID 2276 wrote to memory of 832	2276	3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe	82
PID 2276 wrote to memory of 832	2276	3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe	82
PID 2276 wrote to memory of 832	2276	3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe	82
PID 2276 wrote to memory of 832	2276	3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe	82
PID 2276 wrote to memory of 832	2276	3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe	82
PID 2276 wrote to memory of 832	2276	3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe	82
PID 832 wrote to memory of 1376	832	3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe	83
PID 832 wrote to memory of 1376	832	3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe	83
PID 832 wrote to memory of 1376	832	3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe	83
PID 832 wrote to memory of 824	832	3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe	84
PID 832 wrote to memory of 824	832	3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe	84
PID 832 wrote to memory of 824	832	3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe	84
PID 824 wrote to memory of 1772	824	3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe	86
PID 824 wrote to memory of 1772	824	3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe	86
PID 824 wrote to memory of 1772	824	3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe	86
PID 824 wrote to memory of 1772	824	3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe	86
PID 824 wrote to memory of 1772	824	3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe	86
PID 824 wrote to memory of 1772	824	3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe	86
PID 824 wrote to memory of 1772	824	3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe	86
PID 824 wrote to memory of 1772	824	3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe	86
PID 824 wrote to memory of 1772	824	3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe	86
PID 824 wrote to memory of 1772	824	3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe	86

C:\Users\Admin\AppData\Local\Temp\3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe
"C:\Users\Admin\AppData\Local\Temp\3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2276
- C:\Users\Admin\AppData\Local\Temp\3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe
  "C:\Users\Admin\AppData\Local\Temp\3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:832
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\64428d47-0f62-475c-8d86-07d04308ca11" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:1376
- - C:\Users\Admin\AppData\Local\Temp\3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe
    "C:\Users\Admin\AppData\Local\Temp\3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:824
  - - C:\Users\Admin\AppData\Local\Temp\3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe
      "C:\Users\Admin\AppData\Local\Temp\3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      PID:1772
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 1772 -s 568
        5⤵
        Program crash
        
        PID:3852

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1772 -ip 1772
1⤵
PID:4376

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

File and Directory Permissions Modification

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\64428d47-0f62-475c-8d86-07d04308ca11\3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab.exe

Filesize
814KB

MD5
293d130d2a76caf1890cd4e14b235bfb

SHA1
68f3bc6281107181de6f7f0e22ceebe1d478d038

SHA256
3eac85459e4de2a6ab0b4703278e728920f4bc1bf2d0ed5454e8f5f02a0a78ab

SHA512
4d8d15f5a939f143bdb88fdc204fd8a51b72dd045a5731b4b105f2cab0fa4f13de0a08df1115948857f42670d82d31cae6cb411987033af5af87b60e2722af14

Download Submit
memory/824-22-0x0000000000400000-0x00000000004D9000-memory.dmp

Filesize
868KB

Download
memory/824-19-0x0000000000400000-0x00000000004D9000-memory.dmp

Filesize
868KB

Download
memory/832-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/832-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/832-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/832-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/832-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1772-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1772-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1772-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2276-1-0x00000000022C0000-0x0000000002352000-memory.dmp

Filesize
584KB

Download
memory/2276-2-0x0000000002420000-0x000000000253B000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads