djvu | af4484677bcc32b79a4938c21ca459fd0262ed50f61f77aef6cc415af4d1f7fd

General

Target

3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe
Size

816KB
MD5

cb2486fa86126752ae92a46652f59f5c
SHA1

86f016d0381fc144f35cdc2deaecea4fb52b3c36
SHA256

3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd
SHA512

a4eccabed937164d770b46fba075f33e2010d8c0106720a2f6a7b0f4f7e93b5cb0009e213cad5cd5e257676c42b14ed5145a9a6af2fa1cfeddd67691b5ebceae
SSDEEP

12288:c3VUDkblidXui83ugWj/MsnV5Od0pQy+lb6tCUFlCfs1MqrFY4kGjBv:9DYU+SM8zHpkeCU3Cfs1MqB6m

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://acacaca.org/test1/get.php

Attributes

extension
.vvew
offline_id
rE5LpDv2ftYRXAo7bC18EpzfRMTHSGjgfyIMfZt1
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-QsoSRIeAK6 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: 0530Jhyjd

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral2/memory/2240-2-0x00000000023A0000-0x00000000024BB000-memory.dmp	family_djvu
behavioral2/memory/2052-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2052-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2052-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2052-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2052-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3592-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3592-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3592-21-0x0000000000400000-0x0000000000537000-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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4700	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-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\47fd1ad7-2006-4a37-8784-25fc9484ff2b\\3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe\" --AutoStart"	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.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
6	api.2ip.ua
7	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2240 set thread context of 2052	2240	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	85
PID 1868 set thread context of 3592	1868	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	90

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
4248	3592	WerFault.exe	90

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	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2052	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe
2052	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2240 wrote to memory of 2052	2240	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	85
PID 2240 wrote to memory of 2052	2240	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	85
PID 2240 wrote to memory of 2052	2240	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	85
PID 2240 wrote to memory of 2052	2240	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	85
PID 2240 wrote to memory of 2052	2240	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	85
PID 2240 wrote to memory of 2052	2240	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	85
PID 2240 wrote to memory of 2052	2240	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	85
PID 2240 wrote to memory of 2052	2240	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	85
PID 2240 wrote to memory of 2052	2240	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	85
PID 2240 wrote to memory of 2052	2240	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	85
PID 2052 wrote to memory of 4700	2052	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	86
PID 2052 wrote to memory of 4700	2052	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	86
PID 2052 wrote to memory of 4700	2052	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	86
PID 2052 wrote to memory of 1868	2052	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	87
PID 2052 wrote to memory of 1868	2052	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	87
PID 2052 wrote to memory of 1868	2052	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	87
PID 1868 wrote to memory of 3592	1868	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	90
PID 1868 wrote to memory of 3592	1868	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	90
PID 1868 wrote to memory of 3592	1868	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	90
PID 1868 wrote to memory of 3592	1868	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	90
PID 1868 wrote to memory of 3592	1868	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	90
PID 1868 wrote to memory of 3592	1868	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	90
PID 1868 wrote to memory of 3592	1868	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	90
PID 1868 wrote to memory of 3592	1868	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	90
PID 1868 wrote to memory of 3592	1868	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	90
PID 1868 wrote to memory of 3592	1868	3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe	90

C:\Users\Admin\AppData\Local\Temp\3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe
"C:\Users\Admin\AppData\Local\Temp\3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2240
- C:\Users\Admin\AppData\Local\Temp\3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe
  "C:\Users\Admin\AppData\Local\Temp\3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.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:2052
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\47fd1ad7-2006-4a37-8784-25fc9484ff2b" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:4700
- - C:\Users\Admin\AppData\Local\Temp\3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe
    "C:\Users\Admin\AppData\Local\Temp\3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1868
  - - C:\Users\Admin\AppData\Local\Temp\3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe
      "C:\Users\Admin\AppData\Local\Temp\3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      PID:3592
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 3592 -s 568
        5⤵
        Program crash
        
        PID:4248

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3592 -ip 3592
1⤵
PID:2568

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\47fd1ad7-2006-4a37-8784-25fc9484ff2b\3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd.exe

Filesize
816KB

MD5
cb2486fa86126752ae92a46652f59f5c

SHA1
86f016d0381fc144f35cdc2deaecea4fb52b3c36

SHA256
3986d35b5c4b2c266cd121b72b648294036863841102e850592b9ac9f26afecd

SHA512
a4eccabed937164d770b46fba075f33e2010d8c0106720a2f6a7b0f4f7e93b5cb0009e213cad5cd5e257676c42b14ed5145a9a6af2fa1cfeddd67691b5ebceae

Download Submit
memory/1868-25-0x0000000000400000-0x00000000004D9000-memory.dmp

Filesize
868KB

Download
memory/1868-19-0x0000000000400000-0x00000000004D9000-memory.dmp

Filesize
868KB

Download
memory/2052-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2052-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2052-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2052-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2052-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2240-1-0x0000000002250000-0x00000000022EA000-memory.dmp

Filesize
616KB

Download
memory/2240-2-0x00000000023A0000-0x00000000024BB000-memory.dmp

Filesize
1.1MB

Download
memory/3592-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3592-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3592-21-0x0000000000400000-0x0000000000537000-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