djvu | fb711c647919ed07be47b8c00b07d5185af2d4085c8b5bd92e86e7fd397e2146

General

Target

8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe
Size

820KB
MD5

2996dc273631274fcd381986e9e23f2e
SHA1

ad69287db23c83250f281056750422c30cb5de98
SHA256

8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2
SHA512

13c3ca3b4484f1dc4b7a0125c962526383ab2c9269f7affa1155b07b6c830d32da4070668db6ee847c4999b30d07eeecf5829cd149cbe150ebda8156c69d3029
SSDEEP

24576:wyZXj4J0UGyqJd1feLwGhreksOBt9DFcOsUi:wyZe0UGdrXGwev9xcO

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://acacaca.org/test3/get.php

Attributes

extension
.aamv
offline_id
MyudhIExJux2oRQXw95TT1oAPu7mvqRMzxr1eet1
payload_url
http://rgyui.top/dl/build2.exe

http://acacaca.org/files/1/build3.exe
ransomnote
ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-4Xcf4IX21n Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0564Jhyjd

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral2/memory/3580-2-0x00000000022E0000-0x00000000023FB000-memory.dmp	family_djvu
behavioral2/memory/4392-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4392-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4392-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4392-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4392-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1224-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1224-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1224-22-0x0000000000400000-0x0000000000537000-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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4460	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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\e8bd3ea0-28c8-4e91-8844-803ea33d6756\\8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe\" --AutoStart"	8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.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
14	api.2ip.ua
15	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3580 set thread context of 4392	3580	8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe	83
PID 1176 set thread context of 1224	1176	8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe	91

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
4032	1224	WerFault.exe	91

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	8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4392	8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe
4392	8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3580 wrote to memory of 4392	3580	8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe	83
PID 3580 wrote to memory of 4392	3580	8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe	83
PID 3580 wrote to memory of 4392	3580	8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe	83
PID 3580 wrote to memory of 4392	3580	8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe	83
PID 3580 wrote to memory of 4392	3580	8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe	83
PID 3580 wrote to memory of 4392	3580	8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe	83
PID 3580 wrote to memory of 4392	3580	8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe	83
PID 3580 wrote to memory of 4392	3580	8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe	83
PID 3580 wrote to memory of 4392	3580	8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe	83
PID 3580 wrote to memory of 4392	3580	8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe	83
PID 4392 wrote to memory of 4460	4392	8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe	85
PID 4392 wrote to memory of 4460	4392	8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe	85
PID 4392 wrote to memory of 4460	4392	8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe	85
PID 4392 wrote to memory of 1176	4392	8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe	86
PID 4392 wrote to memory of 1176	4392	8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe	86
PID 4392 wrote to memory of 1176	4392	8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe	86
PID 1176 wrote to memory of 1224	1176	8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe	91
PID 1176 wrote to memory of 1224	1176	8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe	91
PID 1176 wrote to memory of 1224	1176	8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe	91
PID 1176 wrote to memory of 1224	1176	8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe	91
PID 1176 wrote to memory of 1224	1176	8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe	91
PID 1176 wrote to memory of 1224	1176	8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe	91
PID 1176 wrote to memory of 1224	1176	8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe	91
PID 1176 wrote to memory of 1224	1176	8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe	91
PID 1176 wrote to memory of 1224	1176	8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe	91
PID 1176 wrote to memory of 1224	1176	8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe	91

C:\Users\Admin\AppData\Local\Temp\8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe
"C:\Users\Admin\AppData\Local\Temp\8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3580
- C:\Users\Admin\AppData\Local\Temp\8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe
  "C:\Users\Admin\AppData\Local\Temp\8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.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:4392
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\e8bd3ea0-28c8-4e91-8844-803ea33d6756" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:4460
- - C:\Users\Admin\AppData\Local\Temp\8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe
    "C:\Users\Admin\AppData\Local\Temp\8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1176
  - - C:\Users\Admin\AppData\Local\Temp\8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe
      "C:\Users\Admin\AppData\Local\Temp\8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      PID:1224
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 1224 -s 216
        5⤵
        Program crash
        
        PID:4032

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1224 -ip 1224
1⤵
PID:4348

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\e8bd3ea0-28c8-4e91-8844-803ea33d6756\8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2.exe

Filesize
820KB

MD5
2996dc273631274fcd381986e9e23f2e

SHA1
ad69287db23c83250f281056750422c30cb5de98

SHA256
8eb8b057cce7a0df5651d57a61fd3907d873dda063f6076d75a0b7485d7d40e2

SHA512
13c3ca3b4484f1dc4b7a0125c962526383ab2c9269f7affa1155b07b6c830d32da4070668db6ee847c4999b30d07eeecf5829cd149cbe150ebda8156c69d3029

Download Submit
memory/1176-25-0x0000000000400000-0x00000000004D3000-memory.dmp

Filesize
844KB

Download
memory/1176-19-0x0000000000400000-0x00000000004D3000-memory.dmp

Filesize
844KB

Download
memory/1224-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1224-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1224-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3580-1-0x0000000000780000-0x0000000000815000-memory.dmp

Filesize
596KB

Download
memory/3580-2-0x00000000022E0000-0x00000000023FB000-memory.dmp

Filesize
1.1MB

Download
memory/4392-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4392-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4392-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4392-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4392-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads