djvu | 366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf

General

Target

366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe
Size

702KB
MD5

bdc52e2188e62272eb2115a67717a885
SHA1

58c8b2b82586e86d3c1a8e2c9d44ffd27f078f85
SHA256

366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf
SHA512

2e1224f7b4b0c2c84cef64e00b93c0618b76a5295281ce30c06515ba40224e53d9e44dfc26a9f304ab18e54393e77f6c5c496e573da7f15b6cf48dd2afb56f85
SSDEEP

12288:a9TTyPA3SDoG2b8jj2xsAv5R4HqQMElDB3vxe6UpZ:+yMSDl2busnBR4dDze6U

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://cajgtus.com/test1/get.php

Attributes

extension
.bgjs
offline_id
Z6iwSvCoAt8T8K2ROxecuXHPNHv7eDyWrc8Ks7t1
payload_url
http://sdfjhuz.com/dl/build2.exe

http://cajgtus.com/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. Do not ask assistants from youtube and recovery data sites for help in recovering your data. They can use your free decryption quota and scam you. Our contact is emails in this text document only. You can get and look video overview decrypt tool: https://wetransfer.com/downloads/54cdfd152fe98eedb628a1f4ddb7076420240421150208/403a27 Price of private key and decrypt software is $999. Discount 50% available if you contact us first 72 hours, that's price for you is $499. 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: 0863PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 14 IoCs

resource	yara_rule
behavioral2/memory/4712-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4712-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4664-4-0x0000000004850000-0x000000000496B000-memory.dmp	family_djvu
behavioral2/memory/4712-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4712-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4712-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/644-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/644-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/644-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/644-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/644-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/644-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/644-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/644-36-0x0000000000400000-0x0000000000537000-memory.dmp	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
1448	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-1-5-21-3699363923-1875576828-3287151903-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\f95f08ac-ffdb-4171-b11e-aa2f8d193b76\\366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe\" --AutoStart"	366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.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
1	api.2ip.ua
2	api.2ip.ua
10	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4664 set thread context of 4712	4664	366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe	73
PID 192 set thread context of 644	192	366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe	77

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4712	366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe
4712	366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe
644	366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe
644	366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4664 wrote to memory of 4712	4664	366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe	73
PID 4664 wrote to memory of 4712	4664	366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe	73
PID 4664 wrote to memory of 4712	4664	366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe	73
PID 4664 wrote to memory of 4712	4664	366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe	73
PID 4664 wrote to memory of 4712	4664	366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe	73
PID 4664 wrote to memory of 4712	4664	366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe	73
PID 4664 wrote to memory of 4712	4664	366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe	73
PID 4664 wrote to memory of 4712	4664	366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe	73
PID 4664 wrote to memory of 4712	4664	366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe	73
PID 4664 wrote to memory of 4712	4664	366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe	73
PID 4712 wrote to memory of 1448	4712	366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe	74
PID 4712 wrote to memory of 1448	4712	366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe	74
PID 4712 wrote to memory of 1448	4712	366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe	74
PID 4712 wrote to memory of 192	4712	366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe	75
PID 4712 wrote to memory of 192	4712	366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe	75
PID 4712 wrote to memory of 192	4712	366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe	75
PID 192 wrote to memory of 644	192	366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe	77
PID 192 wrote to memory of 644	192	366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe	77
PID 192 wrote to memory of 644	192	366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe	77
PID 192 wrote to memory of 644	192	366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe	77
PID 192 wrote to memory of 644	192	366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe	77
PID 192 wrote to memory of 644	192	366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe	77
PID 192 wrote to memory of 644	192	366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe	77
PID 192 wrote to memory of 644	192	366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe	77
PID 192 wrote to memory of 644	192	366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe	77
PID 192 wrote to memory of 644	192	366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe	77

C:\Users\Admin\AppData\Local\Temp\366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe
"C:\Users\Admin\AppData\Local\Temp\366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4664
- C:\Users\Admin\AppData\Local\Temp\366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe
  "C:\Users\Admin\AppData\Local\Temp\366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4712
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\f95f08ac-ffdb-4171-b11e-aa2f8d193b76" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:1448
- - C:\Users\Admin\AppData\Local\Temp\366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe
    "C:\Users\Admin\AppData\Local\Temp\366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:192
  - - C:\Users\Admin\AppData\Local\Temp\366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe
      "C:\Users\Admin\AppData\Local\Temp\366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:644

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Filesize
1KB

MD5
5a3dc7062c37f1ed13f49c2680c54944

SHA1
7b7579227def2ff7a100afafde8c396cb01f192f

SHA256
5471d0c5a240c2aff6b369dc1c3b6e9eee3cfdece27a50b7379cf16b572e2686

SHA512
25b0afa3af79d7fbff6b499b246aac32ac8dcbbf8c77f1bd00ca78c0fa1d13cb84b7877f71e01d0e52ba68fa36adae3f263c18351ee82166356a15b621230d08

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Filesize
724B

MD5
8202a1cd02e7d69597995cabbe881a12

SHA1
8858d9d934b7aa9330ee73de6c476acf19929ff6

SHA256
58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5

SHA512
97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Filesize
410B

MD5
40c5d513a4afe830c6d125a62065b333

SHA1
ccb890cf8f04ac5137e83272a81d6574f3e4326b

SHA256
4845373f564215971cb981f1efb437d69b3827ed5bbd845c710cff7d4a1c583b

SHA512
2343af1e9321be3ec168ca4aa3490e86ca240911c666af0f1c7cd50ce2109762f7dc9a4bb16cb2a89d366dbe2307e724a687048888e6b0c59e3f083ccbf54537

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Filesize
392B

MD5
91724e6d06d1f844b2f301bba4445266

SHA1
6d283a40f3dc699bb98bad04b65b0805ea85576e

SHA256
80182e515e18efc03b9e8197bb7fdeff7a2e138cac68c8b26a0405622ea84dbc

SHA512
b8442b29b6db5e9de2cf6b6f769d069ec3973c3f686201a4812c931abf1147157ac3b436c983b883750e2478f491c4e4248edc08fe097436774205695b8b8d0c

Download Submit
C:\Users\Admin\AppData\Local\f95f08ac-ffdb-4171-b11e-aa2f8d193b76\366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf.exe

Filesize
702KB

MD5
bdc52e2188e62272eb2115a67717a885

SHA1
58c8b2b82586e86d3c1a8e2c9d44ffd27f078f85

SHA256
366dc7df1ee19cc29a7ce2d0edd282152ba3b8185fea3a73cab1f3747b74f3bf

SHA512
2e1224f7b4b0c2c84cef64e00b93c0618b76a5295281ce30c06515ba40224e53d9e44dfc26a9f304ab18e54393e77f6c5c496e573da7f15b6cf48dd2afb56f85

Download Submit
memory/644-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/644-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/644-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/644-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/644-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/644-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/644-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/644-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4664-1-0x0000000003010000-0x00000000030AB000-memory.dmp

Filesize
620KB

Download
memory/4664-4-0x0000000004850000-0x000000000496B000-memory.dmp

Filesize
1.1MB

Download
memory/4712-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4712-2-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4712-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4712-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4712-19-0x0000000000400000-0x0000000000537000-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