djvu | c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097

Analysis

max time kernel
144s
max time network
130s
platform
windows11-21h2_x64
resource
win11-20240709-en
resource tags

arch:x64arch:x86image:win11-20240709-enlocale:en-usos:windows11-21h2-x64system
submitted
20/07/2024, 03:33

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General

Target
c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe
Size 742KB
Sample240720-d4ezeavbkl
SHA256 c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097
MD5 fa1916e91bc7999baef1ee6ce97967ab
SHA1 21d622de91b6b7e8e16c51c36fc1f541a76e0ff0
SHA512 204b2699785e385bef2a994be62c1334e25244cf905a5656a0c85cc06540dd0b9ca5421fff7f68bd6eee3333b6a716c140c75a8f8e63c6637537861581296e1e
SSDEEP 12288:BoAjkFBL2s63LZlUA33dXCQ1R8L0rMBwKP8m6jekRpWOihuZpgS8RkqXN9A:B25g3L533dSQ1KLN7P8m6jekRcZKpgSb
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.qual
offline_id
KLbRmn6on3AXGFgDLGtd0IkHmV7uHw9VxlcxO5t1
payload_url
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. 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: 0876qual

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 16 IoCs

resource	yara_rule
behavioral2/memory/3264-2-0x0000000004050000-0x000000000416B000-memory.dmp	family_djvu
behavioral2/memory/5656-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5656-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5656-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5656-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5656-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2332-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2332-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2332-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2332-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2332-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2332-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2332-41-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2332-42-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2332-43-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2332-44-0x0000000000400000-0x0000000000537000-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
2948	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-1-5-21-514081398-208714212-3319599467-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\75fc6550-3f77-4ecd-af77-9490ece59eea\\c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe\" --AutoStart"	c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.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
8	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3264 set thread context of 5656	3264	c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe	83
PID 5788 set thread context of 2332	5788	c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe	88

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
5656	c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe
5656	c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe
2332	c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe
2332	c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3264 wrote to memory of 5656	3264	c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe	83
PID 3264 wrote to memory of 5656	3264	c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe	83
PID 3264 wrote to memory of 5656	3264	c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe	83
PID 3264 wrote to memory of 5656	3264	c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe	83
PID 3264 wrote to memory of 5656	3264	c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe	83
PID 3264 wrote to memory of 5656	3264	c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe	83
PID 3264 wrote to memory of 5656	3264	c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe	83
PID 3264 wrote to memory of 5656	3264	c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe	83
PID 3264 wrote to memory of 5656	3264	c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe	83
PID 3264 wrote to memory of 5656	3264	c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe	83
PID 5656 wrote to memory of 2948	5656	c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe	84
PID 5656 wrote to memory of 2948	5656	c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe	84
PID 5656 wrote to memory of 2948	5656	c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe	84
PID 5656 wrote to memory of 5788	5656	c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe	85
PID 5656 wrote to memory of 5788	5656	c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe	85
PID 5656 wrote to memory of 5788	5656	c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe	85
PID 5788 wrote to memory of 2332	5788	c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe	88
PID 5788 wrote to memory of 2332	5788	c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe	88
PID 5788 wrote to memory of 2332	5788	c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe	88
PID 5788 wrote to memory of 2332	5788	c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe	88
PID 5788 wrote to memory of 2332	5788	c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe	88
PID 5788 wrote to memory of 2332	5788	c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe	88
PID 5788 wrote to memory of 2332	5788	c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe	88
PID 5788 wrote to memory of 2332	5788	c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe	88
PID 5788 wrote to memory of 2332	5788	c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe	88
PID 5788 wrote to memory of 2332	5788	c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe	88

C:\Users\Admin\AppData\Local\Temp\c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe
"C:\Users\Admin\AppData\Local\Temp\c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3264
- C:\Users\Admin\AppData\Local\Temp\c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe
  "C:\Users\Admin\AppData\Local\Temp\c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:5656
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\75fc6550-3f77-4ecd-af77-9490ece59eea" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2948
- - C:\Users\Admin\AppData\Local\Temp\c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe
    "C:\Users\Admin\AppData\Local\Temp\c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:5788
  - - C:\Users\Admin\AppData\Local\Temp\c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe
      "C:\Users\Admin\AppData\Local\Temp\c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:2332

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

File and Directory Permissions Modification

T1222

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

8B2B9A00839EED1DFDCCC3BFC2F5DF12

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12
Size 1KB
SHA256 33a39e9ec2133230533a686ec43760026e014a3828c703707acbc150fe40fd6f
MD5 7fb5fa1534dcf77f2125b2403b30a0ee
SHA1 365d96812a69ac0a4611ea4b70a3f306576cc3ea
SHA512 a9279fd60505a1bfeef6fb07834cad0fd5be02fd405573fc1a5f59b991e9f88f5e81c32fe910f69bdc6585e71f02559895149eaf49c25b8ff955459fd60c0d2e
MD5 SHA1 SHA512

Submit Download

B46811C17859FFB409CF0E904A4AA8F8

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8
Size 436B
SHA256 5ba8817f13eee00e75158bad93076ab474a068c6b52686579e0f728fda68499f
MD5 1bfe0a81db078ea084ff82fe545176fe
SHA1 50b116f578bd272922fa8eae94f7b02fd3b88384
SHA512 37c582f3f09f8d80529608c09041295d1644bcc9de6fb8c4669b05339b0dd870f9525abc5eed53ad06a94b51441275504bc943c336c5beb63b53460ba836ca8d
MD5 SHA1 SHA512

Submit Download

8B2B9A00839EED1DFDCCC3BFC2F5DF12

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12
Size 174B
SHA256 6aaaed364c364ae11da81c51d40fac5b73ce61d0443493301d5422cbbfb9cba9
MD5 1a5ba965003f51279c8f0e6483f37620
SHA1 1857339e5d6aec925f998d77189113a7cfbddbc7
SHA512 1560d1c105bf33b64ee442853aa42ad93009e9744330ebe78a52ccd83e676f8c66115392dcb29bcbb55fe307e5bf7aff8befe6a5b139fbeae1d96287d0c5f2bc
MD5 SHA1 SHA512

Submit Download

B46811C17859FFB409CF0E904A4AA8F8

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
Size 170B
SHA256 9687796d0727adccc848e1558167a9640b130eb2e1b2623a7016c4ef136b0be9
MD5 17375740b543b3a3b034f12b0e6a1280
SHA1 4a46bb9f9c328f6e9ce6432bd7f061e36386ba69
SHA512 2c983c97851e01f640b4d18238f5211e7087adf513080d9bc7634c2a8ad881e378d667df7363c3666ec75ac9740cd62c9cdc7003c70ce947f03110f2b46dd652
MD5 SHA1 SHA512

Submit Download

c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe

Path C:\Users\Admin\AppData\Local\75fc6550-3f77-4ecd-af77-9490ece59eea\c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097.exe
Size 742KB
SHA256 c353239379a79b09a4a4dd594cb1dd338a46d0677bd9d43658be6bdb68cc5097
MD5 fa1916e91bc7999baef1ee6ce97967ab
SHA1 21d622de91b6b7e8e16c51c36fc1f541a76e0ff0
SHA512 204b2699785e385bef2a994be62c1334e25244cf905a5656a0c85cc06540dd0b9ca5421fff7f68bd6eee3333b6a716c140c75a8f8e63c6637537861581296e1e
SSDEEP 12288:BoAjkFBL2s63LZlUA33dXCQ1R8L0rMBwKP8m6jekRpWOihuZpgS8RkqXN9A:B25g3L533dSQ1KLN7P8m6jekRcZKpgSb
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/2332-34-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2332-41-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2332-44-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2332-26-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2332-24-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2332-43-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2332-42-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2332-39-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2332-35-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2332-33-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3264-1-0x0000000003FB0000-0x000000000404F000-memory.dmp

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memory/3264-2-0x0000000004050000-0x000000000416B000-memory.dmp

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memory/5656-3-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/5656-6-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/5656-4-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/5656-5-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/5656-21-0x0000000000400000-0x0000000000537000-memory.dmp

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