djvu | 2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12

General

Target

2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe
Size

730KB
MD5

9ba94ba3651f466b6819b6e36bd5ef08
SHA1

ebd7d5ccb991280241eb27b2e4a3a84f0a1a22cb
SHA256

2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12
SHA512

96557623c8d696187902155994fe12747ff8be160e2814ef12c5b28ac3ceaf0c074d70809d7aa0846702b11660a3b66e538f7533ea1d60d248e7ff2877c09981
SSDEEP

12288:Aa4NU9+jvuJ+B2adzl/GSiCrZ87cy2mIqkr7qBhaDlAealsv4x/FQihH+jWrJ:AXCo2an/htyt11faG8ici

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.qepi
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: 0867PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 14 IoCs

resource	yara_rule
behavioral2/memory/1204-2-0x0000000003710000-0x000000000382B000-memory.dmp	family_djvu
behavioral2/memory/3488-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3488-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3488-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3488-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3488-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4352-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4352-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4352-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4352-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4352-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4352-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4352-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4352-36-0x0000000000400000-0x0000000000537000-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
1920	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-1-5-21-160447019-1232603106-4168707212-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\54319bfe-8b6f-476d-be32-ba898de2ab8d\\2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe\" --AutoStart"	2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.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
2	api.2ip.ua
10	api.2ip.ua
1	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1204 set thread context of 3488	1204	2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe	72
PID 1620 set thread context of 4352	1620	2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe	76

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
3488	2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe
3488	2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe
4352	2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe
4352	2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1204 wrote to memory of 3488	1204	2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe	72
PID 1204 wrote to memory of 3488	1204	2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe	72
PID 1204 wrote to memory of 3488	1204	2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe	72
PID 1204 wrote to memory of 3488	1204	2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe	72
PID 1204 wrote to memory of 3488	1204	2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe	72
PID 1204 wrote to memory of 3488	1204	2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe	72
PID 1204 wrote to memory of 3488	1204	2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe	72
PID 1204 wrote to memory of 3488	1204	2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe	72
PID 1204 wrote to memory of 3488	1204	2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe	72
PID 1204 wrote to memory of 3488	1204	2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe	72
PID 3488 wrote to memory of 1920	3488	2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe	73
PID 3488 wrote to memory of 1920	3488	2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe	73
PID 3488 wrote to memory of 1920	3488	2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe	73
PID 3488 wrote to memory of 1620	3488	2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe	74
PID 3488 wrote to memory of 1620	3488	2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe	74
PID 3488 wrote to memory of 1620	3488	2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe	74
PID 1620 wrote to memory of 4352	1620	2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe	76
PID 1620 wrote to memory of 4352	1620	2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe	76
PID 1620 wrote to memory of 4352	1620	2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe	76
PID 1620 wrote to memory of 4352	1620	2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe	76
PID 1620 wrote to memory of 4352	1620	2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe	76
PID 1620 wrote to memory of 4352	1620	2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe	76
PID 1620 wrote to memory of 4352	1620	2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe	76
PID 1620 wrote to memory of 4352	1620	2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe	76
PID 1620 wrote to memory of 4352	1620	2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe	76
PID 1620 wrote to memory of 4352	1620	2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe	76

C:\Users\Admin\AppData\Local\Temp\2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe
"C:\Users\Admin\AppData\Local\Temp\2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1204
- C:\Users\Admin\AppData\Local\Temp\2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe
  "C:\Users\Admin\AppData\Local\Temp\2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3488
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\54319bfe-8b6f-476d-be32-ba898de2ab8d" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:1920
- - C:\Users\Admin\AppData\Local\Temp\2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe
    "C:\Users\Admin\AppData\Local\Temp\2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1620
  - - C:\Users\Admin\AppData\Local\Temp\2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe
      "C:\Users\Admin\AppData\Local\Temp\2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:4352

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
098e3fff2705346ece787c21ac03d0f3

SHA1
8f6923a4871978ebb148a5f1cd34530887b0f0e7

SHA256
16ed7a2c43f928bcc7ec8f7e93082abda7106a63b87e747dcca57f1cee05ccc9

SHA512
2977d9e735e742cdef931554063ce606e3ea9ef4bbf5f405bda639cca10444d0882bc5f48067e5b0e847af7ba069a2fbd97f386937fd3b19b5444d208d962e7e

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
8a335eacdb891b17c07ba08464c8af3f

SHA1
361b08867859869952bb41fd78605489d9b6e6df

SHA256
c9fe9682c9c0b241b3912c06988ec4db3c699f5726bc2b43e35008b53565e4d6

SHA512
7e94a2fb814481ed8705486b7d93747cc84c1d75fade9719c42ee3d5a3fae400739b27f6ad4120bc0777743f6bf7fe21277cc7139d9604d1623cd9815185f130

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

Filesize
392B

MD5
37fb4465ce8acce41f94df3d61109abc

SHA1
8dc960cfc4a6e7e5ac999b9b1c52eb423330d7fb

SHA256
20163930200a9e378e52406ce832967da6fb61235fdfecc3dc0a5b91de123894

SHA512
d693acc14b3fb5c415af9850a0dacc5831c834f8595dba49b9a75d5f34b428637401c4b9a3b55a3c7ec8c8257c569c86c42abba1fdf7db8630cbc1e3a386ed7d

Download Submit
C:\Users\Admin\AppData\Local\54319bfe-8b6f-476d-be32-ba898de2ab8d\2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12.exe

Filesize
730KB

MD5
9ba94ba3651f466b6819b6e36bd5ef08

SHA1
ebd7d5ccb991280241eb27b2e4a3a84f0a1a22cb

SHA256
2ac8491eca16795aef58b5eed0bcab48b6555a2a31a627e6ec0a2b1a7b390a12

SHA512
96557623c8d696187902155994fe12747ff8be160e2814ef12c5b28ac3ceaf0c074d70809d7aa0846702b11660a3b66e538f7533ea1d60d248e7ff2877c09981

Download Submit
memory/1204-2-0x0000000003710000-0x000000000382B000-memory.dmp

Filesize
1.1MB

Download
memory/1204-1-0x0000000003670000-0x0000000003707000-memory.dmp

Filesize
604KB

Download
memory/3488-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3488-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3488-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3488-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3488-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4352-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4352-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4352-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4352-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4352-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4352-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4352-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4352-36-0x0000000000400000-0x0000000000537000-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