djvu | 93dfdf05a0729f9ef8f7088a4f5d273f9ca4895ae46c842b2a702e856a60007c

General

Target

ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe
Size

762KB
MD5

a0dbbf3c7bbec9c0533adf99bfba6a5e
SHA1

148210866871762aca2936f7d79d2729bc821bb4
SHA256

ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e
SHA512

ef7f559fd32f4383429f42cd11e4c03bdb7735dd0f216075b0a096f9c40349d51d2a05bba39361d03f774a65956678996623569e29d184d8c68ade4c5f278bec
SSDEEP

12288:FLx3jQiMDN17Mxvx7w8dCIl9DG8/8+OGn42pp/srMAjGC7sLbX+zB9L:dOiGVPIHGCweJ7srhRYw

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.ghas
offline_id
miqhSGmGE63yWs53FTz0fnp8eCARpnaYE3O3p2t1
payload_url
http://zerit.top/dl/build2.exe

http://fuyt.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-0SLhZxAjRX 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: 0445JIjdm

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 18 IoCs

resource	yara_rule
behavioral2/memory/3032-2-0x0000000002320000-0x000000000243B000-memory.dmp	family_djvu
behavioral2/memory/2720-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2720-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2720-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2720-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2720-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4832-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4832-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4832-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4832-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4832-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4832-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4832-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4832-44-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4832-47-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4832-46-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4832-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4832-49-0x0000000000400000-0x0000000000537000-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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
744	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-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\72d3eb25-f1f4-4431-81d1-20c80be4e08f\\ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe\" --AutoStart"	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.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
6	api.2ip.ua
7	api.2ip.ua
20	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3032 set thread context of 2720	3032	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	83
PID 2532 set thread context of 4832	2532	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	87

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

System Information Discovery
T1082

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	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2720	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe
2720	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe
4832	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe
4832	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3032 wrote to memory of 2720	3032	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	83
PID 3032 wrote to memory of 2720	3032	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	83
PID 3032 wrote to memory of 2720	3032	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	83
PID 3032 wrote to memory of 2720	3032	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	83
PID 3032 wrote to memory of 2720	3032	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	83
PID 3032 wrote to memory of 2720	3032	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	83
PID 3032 wrote to memory of 2720	3032	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	83
PID 3032 wrote to memory of 2720	3032	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	83
PID 3032 wrote to memory of 2720	3032	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	83
PID 3032 wrote to memory of 2720	3032	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	83
PID 2720 wrote to memory of 744	2720	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	84
PID 2720 wrote to memory of 744	2720	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	84
PID 2720 wrote to memory of 744	2720	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	84
PID 2720 wrote to memory of 2532	2720	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	85
PID 2720 wrote to memory of 2532	2720	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	85
PID 2720 wrote to memory of 2532	2720	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	85
PID 2532 wrote to memory of 4832	2532	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	87
PID 2532 wrote to memory of 4832	2532	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	87
PID 2532 wrote to memory of 4832	2532	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	87
PID 2532 wrote to memory of 4832	2532	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	87
PID 2532 wrote to memory of 4832	2532	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	87
PID 2532 wrote to memory of 4832	2532	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	87
PID 2532 wrote to memory of 4832	2532	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	87
PID 2532 wrote to memory of 4832	2532	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	87
PID 2532 wrote to memory of 4832	2532	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	87
PID 2532 wrote to memory of 4832	2532	ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe	87

C:\Users\Admin\AppData\Local\Temp\ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe
"C:\Users\Admin\AppData\Local\Temp\ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3032
- C:\Users\Admin\AppData\Local\Temp\ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe
  "C:\Users\Admin\AppData\Local\Temp\ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.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:2720
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\72d3eb25-f1f4-4431-81d1-20c80be4e08f" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:744
- - C:\Users\Admin\AppData\Local\Temp\ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe
    "C:\Users\Admin\AppData\Local\Temp\ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2532
  - - C:\Users\Admin\AppData\Local\Temp\ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe
      "C:\Users\Admin\AppData\Local\Temp\ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:4832

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\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12

Filesize
1KB

MD5
67e486b2f148a3fca863728242b6273e

SHA1
452a84c183d7ea5b7c015b597e94af8eef66d44a

SHA256
facaf1c3a4bf232abce19a2d534e495b0d3adc7dbe3797d336249aa6f70adcfb

SHA512
d3a37da3bb10a9736dc03e8b2b49baceef5d73c026e2077b8ebc1b786f2c9b2f807e0aa13a5866cf3b3cafd2bc506242ef139c423eaffb050bbb87773e53881e

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8

Filesize
436B

MD5
971c514f84bba0785f80aa1c23edfd79

SHA1
732acea710a87530c6b08ecdf32a110d254a54c8

SHA256
f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895

SHA512
43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12

Filesize
174B

MD5
6d5bf42877125e11e6295595ea34dd1e

SHA1
9db5b6d7ac948ce0437f5988f5f4f544d3cc02f3

SHA256
fccf6c864107f8752ebdffdba415a38a3ce755a88db305481ab0c4768e977069

SHA512
cd48e741d8a0b452cecf471ba31c4a3a8f9312f9e4d33b6305a72d9403f52b5a7906bdd1d0fa4b5aec2d457568cb8ed86db7f88da05a0c1e7023968c3b03b061

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8

Filesize
170B

MD5
6230944ab5648c652625649903a72af4

SHA1
5627e40c9ef43436c7c5d1ed1445800f819655da

SHA256
ec6977b7eb62af4dbe38b9eeb82c3279e267e75a037a7ab9c068178de9256a4f

SHA512
c091c9e8f5ebfdf85515aa6a3c9bdb3c3558472ef564a2a22b057d5a5895f30cd76175fb3cb6dec274047928cfb524abea3a1a7b07a70f9f2d7a103fe6126bee

Download Submit
C:\Users\Admin\AppData\Local\72d3eb25-f1f4-4431-81d1-20c80be4e08f\ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e.exe

Filesize
762KB

MD5
a0dbbf3c7bbec9c0533adf99bfba6a5e

SHA1
148210866871762aca2936f7d79d2729bc821bb4

SHA256
ff4b1284cfa22d2976995bb3fad9e5ed036d3b0d777bc99d6205fade201a7f3e

SHA512
ef7f559fd32f4383429f42cd11e4c03bdb7735dd0f216075b0a096f9c40349d51d2a05bba39361d03f774a65956678996623569e29d184d8c68ade4c5f278bec

Download Submit
memory/2532-23-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download
memory/2532-19-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download
memory/2720-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2720-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2720-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2720-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2720-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3032-1-0x0000000000990000-0x0000000000A2A000-memory.dmp

Filesize
616KB

Download
memory/3032-2-0x0000000002320000-0x000000000243B000-memory.dmp

Filesize
1.1MB

Download
memory/4832-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4832-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4832-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4832-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4832-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4832-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4832-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4832-44-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4832-47-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4832-46-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4832-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4832-49-0x0000000000400000-0x0000000000537000-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