djvu | 62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e

General

Target

62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe
Size

825KB
MD5

12daa481736e858f9aa7ebab5b6f23be
SHA1

3bc72b01e61ca7a18f5e805334927b09f735ef0b
SHA256

62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e
SHA512

2cc918aae5aec6c13ab9495427470c46d2ef1ae1f5fdc923dfd409c4733a08d160489d566db309eabfd6df5875add586ed8e74c68127d4d84e4bf7c8d04835c0
SSDEEP

24576:Ty4JgBCshTGE78m9YM4BwvyH3Xx3szWa0p2:rCBgA8qK3Xx3NY

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://cajgtus.com/test2/get.php

Attributes

extension
.qehu
offline_id
jgILOjDrBgyzY4JmT3B2jDSyBmDPBruKk8bKs6t1
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/665ddae3fc3cd10bbaaa4350408b196920240504141005/4cae7e 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: 0868PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 18 IoCs

resource	yara_rule
behavioral1/memory/1140-2-0x0000000003790000-0x00000000038AB000-memory.dmp	family_djvu
behavioral1/memory/4772-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4772-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4772-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4772-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4772-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2068-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2068-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2068-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2068-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2068-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2068-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3740-34-0x0000000000400000-0x0000000001A98000-memory.dmp	family_djvu
behavioral1/memory/2068-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2068-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2068-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2068-40-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2068-41-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware 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-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
992	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-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\3552c622-8723-4918-8eb0-003cf58a1752\\62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe\" --AutoStart"	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.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
3	api.2ip.ua
4	api.2ip.ua
16	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1140 set thread context of 4772	1140	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	82
PID 3740 set thread context of 2068	3740	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	89

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
4772	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe
4772	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe
2068	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe
2068	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1140 wrote to memory of 4772	1140	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	82
PID 1140 wrote to memory of 4772	1140	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	82
PID 1140 wrote to memory of 4772	1140	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	82
PID 1140 wrote to memory of 4772	1140	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	82
PID 1140 wrote to memory of 4772	1140	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	82
PID 1140 wrote to memory of 4772	1140	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	82
PID 1140 wrote to memory of 4772	1140	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	82
PID 1140 wrote to memory of 4772	1140	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	82
PID 1140 wrote to memory of 4772	1140	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	82
PID 1140 wrote to memory of 4772	1140	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	82
PID 4772 wrote to memory of 992	4772	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	86
PID 4772 wrote to memory of 992	4772	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	86
PID 4772 wrote to memory of 992	4772	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	86
PID 4772 wrote to memory of 3740	4772	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	87
PID 4772 wrote to memory of 3740	4772	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	87
PID 4772 wrote to memory of 3740	4772	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	87
PID 3740 wrote to memory of 2068	3740	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	89
PID 3740 wrote to memory of 2068	3740	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	89
PID 3740 wrote to memory of 2068	3740	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	89
PID 3740 wrote to memory of 2068	3740	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	89
PID 3740 wrote to memory of 2068	3740	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	89
PID 3740 wrote to memory of 2068	3740	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	89
PID 3740 wrote to memory of 2068	3740	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	89
PID 3740 wrote to memory of 2068	3740	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	89
PID 3740 wrote to memory of 2068	3740	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	89
PID 3740 wrote to memory of 2068	3740	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	89

C:\Users\Admin\AppData\Local\Temp\62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe
"C:\Users\Admin\AppData\Local\Temp\62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1140
- C:\Users\Admin\AppData\Local\Temp\62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe
  "C:\Users\Admin\AppData\Local\Temp\62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4772
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\3552c622-8723-4918-8eb0-003cf58a1752" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:992
- - C:\Users\Admin\AppData\Local\Temp\62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe
    "C:\Users\Admin\AppData\Local\Temp\62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:3740
  - - C:\Users\Admin\AppData\Local\Temp\62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe
      "C:\Users\Admin\AppData\Local\Temp\62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:2068

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
1KB

MD5
07ee23ba0a6d65486c02777656134226

SHA1
1afd41e6d40db17cc7c1131f2191f8cd5eacdc69

SHA256
0565d893994abf11978d4e14fa4a1b900ce76d64cf5aca5dc1b93ac36d7939ee

SHA512
45c4aebbfea8a9ad74a3c214d71bc903d09c643c08431b552ee2ad6c1c258a6a013bdcdadbccfd62f2045761ff67c851729dc139063cd5ab6d09ba6f378362fa

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
fff42c0d6992b6588d75cede6c458e26

SHA1
9dfab5c3cc9fbf52fab4c7af152f0f0a31580e39

SHA256
80af200b63dedc6ac3b72b304bb1cbfe30d56c0463986801146299de43e1f75f

SHA512
c7849348684eb265b3c781f47539864cb5e76c796348309315644ea3f374f614f543333c704c172ffdce0b382e4aa4bd155fa9377b9c9570aa9d5cc640ba91f1

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

Filesize
392B

MD5
31b59d1f759d3d3ad282de0e3ddcf4ab

SHA1
2b106b5ecc14b77172ddb48507c8268560d97daa

SHA256
ad768f9d390e862267f613382db0ed1610fe7aadaf8efffced4fe42a2855e5e2

SHA512
8eb10a8709010f912f2525fda65cddb85632e25757436f5efc29ffb77ff10a525a3089e8d680a70fff482bc8898728f96c181fa80be8008c420dceef862dd090

Download Submit
C:\Users\Admin\AppData\Local\3552c622-8723-4918-8eb0-003cf58a1752\62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe

Filesize
825KB

MD5
12daa481736e858f9aa7ebab5b6f23be

SHA1
3bc72b01e61ca7a18f5e805334927b09f735ef0b

SHA256
62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e

SHA512
2cc918aae5aec6c13ab9495427470c46d2ef1ae1f5fdc923dfd409c4733a08d160489d566db309eabfd6df5875add586ed8e74c68127d4d84e4bf7c8d04835c0

Download Submit
memory/1140-2-0x0000000003790000-0x00000000038AB000-memory.dmp

Filesize
1.1MB

Download
memory/1140-1-0x00000000036F0000-0x0000000003783000-memory.dmp

Filesize
588KB

Download
memory/2068-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2068-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2068-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2068-41-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2068-40-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2068-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2068-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2068-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2068-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2068-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2068-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3740-34-0x0000000000400000-0x0000000001A98000-memory.dmp

Filesize
22.6MB

Download
memory/3740-24-0x0000000000400000-0x0000000001A98000-memory.dmp

Filesize
22.6MB

Download
memory/4772-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4772-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4772-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4772-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4772-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads