djvu | 9c3d3de315b2566b6cd5d8aad755a32db659b04edc453a0ae71c8e3024a6fe02

General

Target

98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe
Size

769KB
MD5

b3066f0d8b352cd9e5c18e19118834aa
SHA1

7cfcb6b5848aac682605cc596f52121327a11c57
SHA256

98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f
SHA512

f1967c20b250b234e15682ae6c92645cc24460a01a8db0268e94b092405df54ed56ccac1bc7f97ef71fe549f7698e1e3d6a0d9c6b5cb7071f5f4692dedcd990b
SSDEEP

12288:S6dP8h91FluejiQt20WPEgr3RF27GZaIaXRjqtC/7FNYSY1aO1NiB7gUnAgW:S+A/sebtRWnTzc9NXRetMFKF1aO/mDq

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.tuid
offline_id
LgcOIftV0dQfFBQStVNfb8BhHy8tHRPvXwSiFwt1
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-FglTTmgzZT 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: 0440tOjkfd

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 18 IoCs

resource	yara_rule
behavioral2/memory/2844-2-0x00000000021D0000-0x00000000022EB000-memory.dmp	family_djvu
behavioral2/memory/2160-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2160-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2160-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2160-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2160-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/624-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/624-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/624-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/624-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/624-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/624-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/624-41-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/624-44-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/624-47-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/624-46-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/624-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/624-49-0x0000000000400000-0x0000000000537000-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	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
5068	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\\05e8df7c-1267-4055-9f33-d23fc7bf7a30\\98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe\" --AutoStart"	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.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
21	api.2ip.ua
4	api.2ip.ua
5	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2844 set thread context of 2160	2844	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	83
PID 4292 set thread context of 624	4292	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.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	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2160	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe
2160	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe
624	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe
624	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2844 wrote to memory of 2160	2844	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	83
PID 2844 wrote to memory of 2160	2844	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	83
PID 2844 wrote to memory of 2160	2844	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	83
PID 2844 wrote to memory of 2160	2844	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	83
PID 2844 wrote to memory of 2160	2844	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	83
PID 2844 wrote to memory of 2160	2844	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	83
PID 2844 wrote to memory of 2160	2844	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	83
PID 2844 wrote to memory of 2160	2844	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	83
PID 2844 wrote to memory of 2160	2844	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	83
PID 2844 wrote to memory of 2160	2844	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	83
PID 2160 wrote to memory of 5068	2160	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	84
PID 2160 wrote to memory of 5068	2160	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	84
PID 2160 wrote to memory of 5068	2160	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	84
PID 2160 wrote to memory of 4292	2160	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	85
PID 2160 wrote to memory of 4292	2160	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	85
PID 2160 wrote to memory of 4292	2160	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	85
PID 4292 wrote to memory of 624	4292	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	87
PID 4292 wrote to memory of 624	4292	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	87
PID 4292 wrote to memory of 624	4292	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	87
PID 4292 wrote to memory of 624	4292	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	87
PID 4292 wrote to memory of 624	4292	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	87
PID 4292 wrote to memory of 624	4292	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	87
PID 4292 wrote to memory of 624	4292	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	87
PID 4292 wrote to memory of 624	4292	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	87
PID 4292 wrote to memory of 624	4292	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	87
PID 4292 wrote to memory of 624	4292	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	87

C:\Users\Admin\AppData\Local\Temp\98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe
"C:\Users\Admin\AppData\Local\Temp\98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2844
- C:\Users\Admin\AppData\Local\Temp\98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe
  "C:\Users\Admin\AppData\Local\Temp\98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.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:2160
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\05e8df7c-1267-4055-9f33-d23fc7bf7a30" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:5068
- - C:\Users\Admin\AppData\Local\Temp\98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe
    "C:\Users\Admin\AppData\Local\Temp\98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4292
  - - C:\Users\Admin\AppData\Local\Temp\98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe
      "C:\Users\Admin\AppData\Local\Temp\98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:624

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
cf5507e9b179df1083308aeb31da1c21

SHA1
98f202f45395478b13a5dc8896b503aef6ba9ed9

SHA256
e35c0b99466fd05ef2aed603f41aafe096d01c8633baa95f5de76ff91951d4cb

SHA512
5fa9acc36a4a430938626c1a0f2cc6503e9730a22fda51f67f892b4a7d39b309cdd8fd8724269b25981fdd8d27d2a17d672a34c4bce8020f30093791de408a18

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

Filesize
170B

MD5
e47e4036cef3aca4b72d7b1b63c68b77

SHA1
a4ccbecb243a4a0f96d8d3e8a3cb55302442a74f

SHA256
9f8f7f1e9cbb4bfdacc2208c5962a8e965464b6b2492c9f3403e799338440eb1

SHA512
74d360ed4f53ec46b8d840447cacea859f39e2e79ab62a7cf413646beef376dcd703d8a8877db408defe2fcc582b301de720bedd68623ecf8c31ef17bfeb352b

Download Submit
C:\Users\Admin\AppData\Local\05e8df7c-1267-4055-9f33-d23fc7bf7a30\98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe

Filesize
769KB

MD5
b3066f0d8b352cd9e5c18e19118834aa

SHA1
7cfcb6b5848aac682605cc596f52121327a11c57

SHA256
98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f

SHA512
f1967c20b250b234e15682ae6c92645cc24460a01a8db0268e94b092405df54ed56ccac1bc7f97ef71fe549f7698e1e3d6a0d9c6b5cb7071f5f4692dedcd990b

Download Submit
memory/624-41-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/624-44-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/624-49-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/624-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/624-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/624-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/624-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/624-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/624-46-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/624-47-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/624-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/624-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2160-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2160-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2160-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2160-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2160-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2844-1-0x00000000006C0000-0x0000000000760000-memory.dmp

Filesize
640KB

Download
memory/2844-2-0x00000000021D0000-0x00000000022EB000-memory.dmp

Filesize
1.1MB

Download
memory/4292-21-0x0000000000400000-0x00000000004EC000-memory.dmp

Filesize
944KB

Download
memory/4292-25-0x0000000000400000-0x00000000004EC000-memory.dmp

Filesize
944KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads