djvu | ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b

General

Target

ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe
Size

702KB
MD5

6ff898cdff53d53b908e605b809a9913
SHA1

1e2a91b317ad0854fd5ec29e2dd9c466297f7f13
SHA256

ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b
SHA512

389ddb2cecab57729c1113eb9efec47e31ff335ce06ee823f5254adec2c4850f5dc880e7f2a9443a4d96513a4c9adc010661a91a068908cab481b0a160be3cb0
SSDEEP

12288:UBvzf5Pm8CqAkBUTn8adCyjC6zhsPipQn9nPCSqHiXZztCDPE:GvzfM8Cqsv9e6zaieLqCXNt2

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/4904-3-0x0000000004990000-0x0000000004AAB000-memory.dmp	family_djvu
behavioral2/memory/212-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/212-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/212-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/212-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/212-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1148-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1148-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1148-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1148-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1148-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1148-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1148-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1148-36-0x0000000000400000-0x0000000000537000-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
4964	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-1-5-21-3968772205-1713802336-1776639840-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\bd81afe0-c10d-4818-b5ed-c947604717cc\\ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe\" --AutoStart"	ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.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 4904 set thread context of 212	4904	ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe	74
PID 4420 set thread context of 1148	4420	ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe	78

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
212	ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe
212	ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe
1148	ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe
1148	ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4904 wrote to memory of 212	4904	ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe	74
PID 4904 wrote to memory of 212	4904	ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe	74
PID 4904 wrote to memory of 212	4904	ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe	74
PID 4904 wrote to memory of 212	4904	ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe	74
PID 4904 wrote to memory of 212	4904	ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe	74
PID 4904 wrote to memory of 212	4904	ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe	74
PID 4904 wrote to memory of 212	4904	ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe	74
PID 4904 wrote to memory of 212	4904	ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe	74
PID 4904 wrote to memory of 212	4904	ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe	74
PID 4904 wrote to memory of 212	4904	ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe	74
PID 212 wrote to memory of 4964	212	ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe	75
PID 212 wrote to memory of 4964	212	ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe	75
PID 212 wrote to memory of 4964	212	ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe	75
PID 212 wrote to memory of 4420	212	ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe	76
PID 212 wrote to memory of 4420	212	ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe	76
PID 212 wrote to memory of 4420	212	ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe	76
PID 4420 wrote to memory of 1148	4420	ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe	78
PID 4420 wrote to memory of 1148	4420	ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe	78
PID 4420 wrote to memory of 1148	4420	ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe	78
PID 4420 wrote to memory of 1148	4420	ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe	78
PID 4420 wrote to memory of 1148	4420	ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe	78
PID 4420 wrote to memory of 1148	4420	ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe	78
PID 4420 wrote to memory of 1148	4420	ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe	78
PID 4420 wrote to memory of 1148	4420	ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe	78
PID 4420 wrote to memory of 1148	4420	ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe	78
PID 4420 wrote to memory of 1148	4420	ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe	78

C:\Users\Admin\AppData\Local\Temp\ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe
"C:\Users\Admin\AppData\Local\Temp\ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4904
- C:\Users\Admin\AppData\Local\Temp\ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe
  "C:\Users\Admin\AppData\Local\Temp\ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:212
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\bd81afe0-c10d-4818-b5ed-c947604717cc" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:4964
- - C:\Users\Admin\AppData\Local\Temp\ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe
    "C:\Users\Admin\AppData\Local\Temp\ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4420
  - - C:\Users\Admin\AppData\Local\Temp\ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe
      "C:\Users\Admin\AppData\Local\Temp\ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:1148

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
56282e3f56542f67e60909a4345c5a35

SHA1
1a627ec9980ee9e3f5846da3b63552122032f78b

SHA256
719698173bbfbb3375c5e0c43342f785c76727fcd6560364e0d9bec77232a6f5

SHA512
291a1569239659ae5c1466d324f6c0114653f2b1578e59f1f340decf189aa38ccf9599c2005551e09ce94f2bceb94f64773181fc011dc1167edd4aa9b1b4d11e

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
910c8eaea9978dc2201d4189050b99ae

SHA1
bcd20204fb048a0f73496aa335b42a39c60703fe

SHA256
06261c661924cf9d7eff78e4005857be4084202bafc0bdf183a5ed7183c7466a

SHA512
874aa44988b7df35384e771c2f8fb230a3240cb50936c9c565f41a9acc919ba5efd7b447ac67349d91c64f8568c000d434f178353de9499580cc48c3ffb1fbff

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

Filesize
392B

MD5
2657716eabb8fc82ad30f03fb002a97f

SHA1
a9e4de5df03da45fd328fb03eb563c63bc555b13

SHA256
667ca1505767f97bb2c248f5fc2339bd4d958efa4dd812da5be99d2479d8f15e

SHA512
4842a1c633b8c0ac4276369905a403db3b02b8b4cf31242deb4810fe2b5894017f939bb8e9a19cdf63f220b7199068ec53f93a04e1227c3938234904ecffe15b

Download Submit
C:\Users\Admin\AppData\Local\bd81afe0-c10d-4818-b5ed-c947604717cc\ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b.exe

Filesize
702KB

MD5
6ff898cdff53d53b908e605b809a9913

SHA1
1e2a91b317ad0854fd5ec29e2dd9c466297f7f13

SHA256
ab3ec18573a409b7e2d673326addf9d949e3783ede25ea4cb0be435222bb113b

SHA512
389ddb2cecab57729c1113eb9efec47e31ff335ce06ee823f5254adec2c4850f5dc880e7f2a9443a4d96513a4c9adc010661a91a068908cab481b0a160be3cb0

Download Submit
memory/212-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/212-2-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/212-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/212-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/212-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1148-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1148-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1148-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1148-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1148-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1148-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1148-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1148-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4904-1-0x0000000002E00000-0x0000000002E9E000-memory.dmp

Filesize
632KB

Download
memory/4904-3-0x0000000004990000-0x0000000004AAB000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads