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
behavioral2/memory/3584-2-0x0000000003840000-0x000000000395B000-memory.dmp	family_djvu
behavioral2/memory/3936-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3936-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3936-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3936-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3936-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1452-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1452-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1452-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1452-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1452-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1452-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4444-34-0x0000000000400000-0x0000000001A98000-memory.dmp	family_djvu
behavioral2/memory/1452-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1452-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1452-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1452-40-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1452-41-0x0000000000400000-0x0000000000537000-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
1364	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-1-5-21-1230210488-3096403634-4129516247-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\0f4d9c14-9516-4cb6-9340-b9c9e5af9b38\\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
1	api.2ip.ua
2	api.2ip.ua
6	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3584 set thread context of 3936	3584	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	79
PID 4444 set thread context of 1452	4444	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	86

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
3936	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe
3936	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe
1452	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe
1452	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3584 wrote to memory of 3936	3584	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	79
PID 3584 wrote to memory of 3936	3584	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	79
PID 3584 wrote to memory of 3936	3584	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	79
PID 3584 wrote to memory of 3936	3584	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	79
PID 3584 wrote to memory of 3936	3584	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	79
PID 3584 wrote to memory of 3936	3584	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	79
PID 3584 wrote to memory of 3936	3584	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	79
PID 3584 wrote to memory of 3936	3584	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	79
PID 3584 wrote to memory of 3936	3584	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	79
PID 3584 wrote to memory of 3936	3584	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	79
PID 3936 wrote to memory of 1364	3936	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	82
PID 3936 wrote to memory of 1364	3936	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	82
PID 3936 wrote to memory of 1364	3936	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	82
PID 3936 wrote to memory of 4444	3936	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	83
PID 3936 wrote to memory of 4444	3936	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	83
PID 3936 wrote to memory of 4444	3936	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	83
PID 4444 wrote to memory of 1452	4444	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	86
PID 4444 wrote to memory of 1452	4444	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	86
PID 4444 wrote to memory of 1452	4444	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	86
PID 4444 wrote to memory of 1452	4444	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	86
PID 4444 wrote to memory of 1452	4444	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	86
PID 4444 wrote to memory of 1452	4444	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	86
PID 4444 wrote to memory of 1452	4444	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	86
PID 4444 wrote to memory of 1452	4444	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	86
PID 4444 wrote to memory of 1452	4444	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	86
PID 4444 wrote to memory of 1452	4444	62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe	86

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:3584
- C:\Users\Admin\AppData\Local\Temp\62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe
  "C:\Users\Admin\AppData\Local\Temp\62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3936
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\0f4d9c14-9516-4cb6-9340-b9c9e5af9b38" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:1364
- - 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:4444
  - - C:\Users\Admin\AppData\Local\Temp\62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe
      "C:\Users\Admin\AppData\Local\Temp\62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:1452

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

Replay Monitor

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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
4f12417039e654896f18e5ffb1097231

SHA1
132cf69167f41208470a2e100ca1888660db45a6

SHA256
9ce800b9c84203cc8db8e3bedacd9f6803a249b40b99935d84a7ee80bc5c0802

SHA512
f73300bca67abe5af751eec5cdcdb3751151d5adcc7b1feb0834478a22f6f8f22537ea9ef4a2d89e8b9f128f1853095b3c7107009db2c4832620edd855168074

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

Filesize
392B

MD5
14e29f3f75faa0cfafd4e9100fe032af

SHA1
9b7aff7e93b76c5927aa520609484bc6fb4c0677

SHA256
07ea0e179cfc54870df2a6e51711b1dec6d04c23fdd101a17a40f59fc7aab05b

SHA512
65cc604727685b03398718be817b18a37096cf6eca4a131be75f82cfbffef7669ea06c6ee0a5629c43556af8407882cc7e39d3e9fad6ce18d6b5f93104296745

Download Submit
C:\Users\Admin\AppData\Local\0f4d9c14-9516-4cb6-9340-b9c9e5af9b38\62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e.exe

Filesize
825KB

MD5
12daa481736e858f9aa7ebab5b6f23be

SHA1
3bc72b01e61ca7a18f5e805334927b09f735ef0b

SHA256
62b5fbd2e572756c1fb85c9ddc9ac9267dceb5ae4a6843fc27a6237707079c2e

SHA512
2cc918aae5aec6c13ab9495427470c46d2ef1ae1f5fdc923dfd409c4733a08d160489d566db309eabfd6df5875add586ed8e74c68127d4d84e4bf7c8d04835c0

Download Submit
memory/1452-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1452-41-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1452-40-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1452-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1452-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1452-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1452-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1452-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1452-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1452-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1452-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3584-2-0x0000000003840000-0x000000000395B000-memory.dmp

Filesize
1.1MB

Download
memory/3584-1-0x00000000037A0000-0x000000000383E000-memory.dmp

Filesize
632KB

Download
memory/3936-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3936-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3936-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3936-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3936-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4444-34-0x0000000000400000-0x0000000001A98000-memory.dmp

Filesize
22.6MB

Download
memory/4444-24-0x0000000000400000-0x0000000001A98000-memory.dmp

Filesize
22.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads