djvu | 0ba115b3fee2afb35dee040675291100006d24a9684232be8c730f166b3b431f

General

Target

2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe
Size

1.1MB
MD5

86dbb6ed19cb1e8f2da1c3dfa22f32b0
SHA1

528ac12a59b58fab81b25500384a65e5d6d23a84
SHA256

0ba115b3fee2afb35dee040675291100006d24a9684232be8c730f166b3b431f
SHA512

e2e9bb68dd565b530cf451d5a7e37f66c110859126407eb1c12ffb8ec5f05cd36cc7fc931cf69e290b0901834c4530d372fec3c4f0c76c16fdf7f0459ff57b61
SSDEEP

24576:ZBUIKn/vwOXGUXAjCymYZiVtElVIBT2roqnTSSxWeT/dRPOO8OWQHUq7:F0dwAYZt6C31WeTVRPOhO7Uq7

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://rlrz.org/lancer/get.php

Attributes

extension
.rivd
offline_id
WbO7bkwHxaepEmevfYYUBNgcxNJGpd7hoNKokRt1
payload_url
http://znpst.top/dl/build2.exe

http://rlrz.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-CcXGxzXf71 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: 0342gSd743d

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 1 IoCs

resource	yara_rule
behavioral1/files/0x0008000000015d8f-14.dat	family_djvu

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

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2924	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-1-5-21-1506706701-1246725540-2219210854-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\4d397eb2-5883-482e-a2e0-ddc46b3d81d9\\2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe\" --AutoStart"	2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.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
4	api.2ip.ua
5	api.2ip.ua
9	api.2ip.ua

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 3 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	2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2272	2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe
2272	2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe
2676	2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe
2676	2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2272 wrote to memory of 2924	2272	2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe	32
PID 2272 wrote to memory of 2924	2272	2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe	32
PID 2272 wrote to memory of 2924	2272	2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe	32
PID 2272 wrote to memory of 2924	2272	2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe	32
PID 2272 wrote to memory of 2676	2272	2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe	33
PID 2272 wrote to memory of 2676	2272	2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe	33
PID 2272 wrote to memory of 2676	2272	2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe	33
PID 2272 wrote to memory of 2676	2272	2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe	33

C:\Users\Admin\AppData\Local\Temp\2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe
"C:\Users\Admin\AppData\Local\Temp\2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2272
- C:\Windows\SysWOW64\icacls.exe
  icacls "C:\Users\Admin\AppData\Local\4d397eb2-5883-482e-a2e0-ddc46b3d81d9" /deny *S-1-1-0:(OI)(CI)(DE,DC)
  2⤵
  - Modifies file permissions
  - System Location Discovery: System Language Discovery
  PID:2924
- C:\Users\Admin\AppData\Local\Temp\2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe
  "C:\Users\Admin\AppData\Local\Temp\2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe" --Admin IsNotAutoStart IsNotTask
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:2676

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

System Information Discovery

1

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
7fb5fa1534dcf77f2125b2403b30a0ee

SHA1
365d96812a69ac0a4611ea4b70a3f306576cc3ea

SHA256
33a39e9ec2133230533a686ec43760026e014a3828c703707acbc150fe40fd6f

SHA512
a9279fd60505a1bfeef6fb07834cad0fd5be02fd405573fc1a5f59b991e9f88f5e81c32fe910f69bdc6585e71f02559895149eaf49c25b8ff955459fd60c0d2e

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
54b63c7ae185c77b5ef6d74896e9e90b

SHA1
5309cf5c41f77edfefcf14f2de3b25582cfcd851

SHA256
c588c5b75fcce337854a6646e13c54cea17b655358350e587720437e1cb2c24d

SHA512
4056edeaa2212360e553673abd073b874cddcb41b39ed1a98daa6512ac94ccab759843c7d47d6e510662e8c2c9b1fd0137ce5391fa56235c6e3537be3f4b5a9d

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

Filesize
170B

MD5
b45ee6c45ec1a6cc991f20f10e2b316d

SHA1
7afaa6c3d56118d6b85582992be0704c7f8188d9

SHA256
5e552deab7c5c4b05b8047bbd1e3084e25e9815bbc4aaba21ef63fef3ba6111f

SHA512
fa607779d764eb6b524ede70953dc818fb438d123ee90e9087da988d6c296a1192adc144064bc817624622b9b60778aa5f0dbb2b1a26e65d8c5fd6c35016722e

Download Submit
C:\Users\Admin\AppData\Local\4d397eb2-5883-482e-a2e0-ddc46b3d81d9\2024090686dbb6ed19cb1e8f2da1c3dfa22f32b0stop.exe

Filesize
1.1MB

MD5
86dbb6ed19cb1e8f2da1c3dfa22f32b0

SHA1
528ac12a59b58fab81b25500384a65e5d6d23a84

SHA256
0ba115b3fee2afb35dee040675291100006d24a9684232be8c730f166b3b431f

SHA512
e2e9bb68dd565b530cf451d5a7e37f66c110859126407eb1c12ffb8ec5f05cd36cc7fc931cf69e290b0901834c4530d372fec3c4f0c76c16fdf7f0459ff57b61

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabECEE.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads