djvu | 82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f

General

Target

82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe
Size

803KB
MD5

0667a74a0e7cf1f09f66caf3f8712152
SHA1

d4ec2cd9745ab657d4251728b3659792cb723f9e
SHA256

82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f
SHA512

157e19ceca7e5a850fbe40823c38e2388c2ca28771929ec8c7c78bbf667cbf144717e2be427669d264f14da32527728317d2d18cf992ea712fb2f911760e008a
SSDEEP

12288:e4tvDr5yrrV3RShu2O4JI+h8i90cXG2f26QgUNtC95+qyO1yzpYrgfhIAcQxSsF:tQ/PUIY/RPfSLO9cqjFrgzc6Ss

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.uajs
offline_id
Jx0i3k2ogR5cKxX1evmz0Ex7TUxOUlnbh2dvnIt1
payload_url
http://sdfjhuz.com/dl/build2.exe

http://sajdfue.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/df01994dd8d37c2c33469922f8e7155a20240402134014/fd95b0 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: 0859PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 17 IoCs

resource	yara_rule
behavioral2/memory/1032-2-0x00000000022E0000-0x00000000023FB000-memory.dmp	family_djvu
behavioral2/memory/1748-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1748-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1748-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1748-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1748-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2044-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2044-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2044-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2044-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2044-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2044-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2044-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2044-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2044-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2044-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2044-39-0x0000000000400000-0x0000000000537000-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
1152	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-1-5-21-627134735-902745853-4257352768-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\a20aa81b-6bcb-4685-bdde-a696c4db13bb\\82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe\" --AutoStart"	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.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 1032 set thread context of 1748	1032	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	79
PID 4724 set thread context of 2044	4724	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	85

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
1748	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe
1748	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe
2044	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe
2044	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1032 wrote to memory of 1748	1032	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	79
PID 1032 wrote to memory of 1748	1032	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	79
PID 1032 wrote to memory of 1748	1032	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	79
PID 1032 wrote to memory of 1748	1032	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	79
PID 1032 wrote to memory of 1748	1032	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	79
PID 1032 wrote to memory of 1748	1032	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	79
PID 1032 wrote to memory of 1748	1032	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	79
PID 1032 wrote to memory of 1748	1032	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	79
PID 1032 wrote to memory of 1748	1032	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	79
PID 1032 wrote to memory of 1748	1032	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	79
PID 1748 wrote to memory of 1152	1748	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	81
PID 1748 wrote to memory of 1152	1748	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	81
PID 1748 wrote to memory of 1152	1748	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	81
PID 1748 wrote to memory of 4724	1748	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	82
PID 1748 wrote to memory of 4724	1748	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	82
PID 1748 wrote to memory of 4724	1748	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	82
PID 4724 wrote to memory of 2044	4724	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	85
PID 4724 wrote to memory of 2044	4724	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	85
PID 4724 wrote to memory of 2044	4724	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	85
PID 4724 wrote to memory of 2044	4724	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	85
PID 4724 wrote to memory of 2044	4724	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	85
PID 4724 wrote to memory of 2044	4724	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	85
PID 4724 wrote to memory of 2044	4724	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	85
PID 4724 wrote to memory of 2044	4724	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	85
PID 4724 wrote to memory of 2044	4724	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	85
PID 4724 wrote to memory of 2044	4724	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	85

C:\Users\Admin\AppData\Local\Temp\82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe
"C:\Users\Admin\AppData\Local\Temp\82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1032
- C:\Users\Admin\AppData\Local\Temp\82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe
  "C:\Users\Admin\AppData\Local\Temp\82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1748
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\a20aa81b-6bcb-4685-bdde-a696c4db13bb" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:1152
- - C:\Users\Admin\AppData\Local\Temp\82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe
    "C:\Users\Admin\AppData\Local\Temp\82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4724
  - - C:\Users\Admin\AppData\Local\Temp\82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe
      "C:\Users\Admin\AppData\Local\Temp\82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:2044

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
a8cb187f51e9474f4849be9081686a12

SHA1
449935cb209de8c3d86e6a89e9641fd0c75a46e9

SHA256
0bb3a455f621cc81eb3a688d1aea6942a3b3f8a8acd39c4f7790ee09ca003c66

SHA512
31e23ccfea7f6fde71959b7f1845ff6e9b8b3a0251df38eaf409293bc537b9c23862af74da20afa646254179c7f86e64473f51da42d0f971ef8d7da499c66f92

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
91084c4b87cea0e8f865b2caa0198cf2

SHA1
9be77b5235287ee4cf0f027d0fbb1bfd7cb00625

SHA256
ccbbfeb4a58cc86b1eebf90da847eaf65618cbd59d22472c52e7dea90fd444f2

SHA512
5b92cd24169343472de6cacb395b9c5b9319fb824f50145b4388642b4c23e88264a4e1582089446d197f4cb1945ea15bd1d7987e7a73689050b3519dd9997ec9

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

Filesize
392B

MD5
0f55e1974d0c1d596e2102a7d204774d

SHA1
7112c46c4b60e890e3e5092f1478e29159c893d3

SHA256
a3614e3bfff7cae1f7fdf03171a572c2d7dfb04a8fa28bbf1f5b85e015e8bfbc

SHA512
0dc0905c02367f17eaa8f05924d344c21af164a0b07702e2587edeb18187adf52e7a79b26fbe91749a0e98e1fd95018e5a8f0a7e23c6689f137fbdd650f3b496

Download Submit
C:\Users\Admin\AppData\Local\a20aa81b-6bcb-4685-bdde-a696c4db13bb\82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe

Filesize
803KB

MD5
0667a74a0e7cf1f09f66caf3f8712152

SHA1
d4ec2cd9745ab657d4251728b3659792cb723f9e

SHA256
82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f

SHA512
157e19ceca7e5a850fbe40823c38e2388c2ca28771929ec8c7c78bbf667cbf144717e2be427669d264f14da32527728317d2d18cf992ea712fb2f911760e008a

Download Submit
memory/1032-1-0x0000000002240000-0x00000000022DA000-memory.dmp

Filesize
616KB

Download
memory/1032-2-0x00000000022E0000-0x00000000023FB000-memory.dmp

Filesize
1.1MB

Download
memory/1748-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1748-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1748-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1748-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1748-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2044-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2044-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2044-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2044-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2044-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2044-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2044-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2044-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2044-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2044-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2044-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4724-20-0x0000000002100000-0x0000000002199000-memory.dmp

Filesize
612KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads