djvu | 143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a

General

Target

143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe
Size

732KB
MD5

f5dc9ce8fdcf4b5957d13f3d50ddaa51
SHA1

0f7aa15f74f755c0b316b19db8643840c7715805
SHA256

143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a
SHA512

e358544a8bf6803aad7c8c6f238dc941a744cf6cbee1676bdfa9141bd1e21f8088c4bf3aea315a11e26a5d1d60e3d5605ad357246964dfc439a9381c4f53742b
SSDEEP

12288:j9Cxxya0HOiuSdAscJV6aUUtFe5ah+Gz7oEi1SIBSwIkTc7qn0zK:j9SSS6gkadz78RSSTr0zK

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.vepi
offline_id
EGfa5svnSGFJka7LZBQoqff0QtO1IpTauoDvGvt1
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/33b490a613f49fa190924f199d2c079e20240512191214/caaf73 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: 0871PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 17 IoCs

resource	yara_rule
behavioral2/memory/4396-2-0x00000000025D0000-0x00000000026EB000-memory.dmp	family_djvu
behavioral2/memory/1916-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1916-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1916-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1916-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1916-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2596-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2596-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2596-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2596-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2596-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2596-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2596-40-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2596-43-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2596-42-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2596-44-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2596-45-0x0000000000400000-0x0000000000537000-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
4948	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-1-5-21-3433428765-2473475212-4279855560-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\11b45a85-78da-49a2-9c10-12192fe84338\\143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe\" --AutoStart"	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.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 4396 set thread context of 1916	4396	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	81
PID 1624 set thread context of 2596	1624	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.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
1916	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe
1916	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe
2596	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe
2596	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4396 wrote to memory of 1916	4396	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	81
PID 4396 wrote to memory of 1916	4396	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	81
PID 4396 wrote to memory of 1916	4396	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	81
PID 4396 wrote to memory of 1916	4396	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	81
PID 4396 wrote to memory of 1916	4396	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	81
PID 4396 wrote to memory of 1916	4396	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	81
PID 4396 wrote to memory of 1916	4396	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	81
PID 4396 wrote to memory of 1916	4396	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	81
PID 4396 wrote to memory of 1916	4396	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	81
PID 4396 wrote to memory of 1916	4396	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	81
PID 1916 wrote to memory of 4948	1916	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	82
PID 1916 wrote to memory of 4948	1916	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	82
PID 1916 wrote to memory of 4948	1916	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	82
PID 1916 wrote to memory of 1624	1916	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	83
PID 1916 wrote to memory of 1624	1916	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	83
PID 1916 wrote to memory of 1624	1916	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	83
PID 1624 wrote to memory of 2596	1624	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	86
PID 1624 wrote to memory of 2596	1624	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	86
PID 1624 wrote to memory of 2596	1624	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	86
PID 1624 wrote to memory of 2596	1624	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	86
PID 1624 wrote to memory of 2596	1624	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	86
PID 1624 wrote to memory of 2596	1624	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	86
PID 1624 wrote to memory of 2596	1624	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	86
PID 1624 wrote to memory of 2596	1624	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	86
PID 1624 wrote to memory of 2596	1624	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	86
PID 1624 wrote to memory of 2596	1624	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	86

C:\Users\Admin\AppData\Local\Temp\143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe
"C:\Users\Admin\AppData\Local\Temp\143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4396
- C:\Users\Admin\AppData\Local\Temp\143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe
  "C:\Users\Admin\AppData\Local\Temp\143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1916
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\11b45a85-78da-49a2-9c10-12192fe84338" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:4948
- - C:\Users\Admin\AppData\Local\Temp\143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe
    "C:\Users\Admin\AppData\Local\Temp\143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1624
  - - C:\Users\Admin\AppData\Local\Temp\143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe
      "C:\Users\Admin\AppData\Local\Temp\143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:2596

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
84721cd35068ddfc92aa0a4c829fbd2a

SHA1
71d7e227e0f3fcbb585598d0f3757a8935b748ce

SHA256
bf8250097eb58e963c7cd636093d2a332647af517ad22ddebe1765703b8dd199

SHA512
f08b89715c28ae36927316d6fca1716dbd9e935edf9d7e979586c4e4610fc29c83514e2385dbf43e7227f8275603c5cbd85c2a098be6ada95aee1a24c5e23dfc

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
bf343112637f8cdcd66958ced3e628e6

SHA1
f8da66eb9ac73c0ba9e7cd0f23df5ff085626757

SHA256
724ad936d1e6ed3db9c9c66b44e87f2d51cdf448a65180c4f45128fd66c40887

SHA512
ca3f927cfecb9b9a09c4c99b2782fa4f6e680e28314ad95fe03f4e9675095b58bd82a5dbe836aaf5946a8129b9a14452d7ed8e49537b456ab9e2462af0ccaab5

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

Filesize
392B

MD5
c8bbe9e720f6fb3aa4fc02ae89c64fe6

SHA1
639b547b02dcd33899ff5cd070c7d8c3dad6d1cf

SHA256
e7dd465d8c6271fd0f1eb517bbe3eccd1d446da3e2a873f52c3fcca42dbb60a3

SHA512
f59ff6861f90f365c6ad77a3346f9cbd0c99aa4004a025f9eccdbcffc194a8adec9a92e5cbc14c6805b55dfb83f2d0503337ce39dc674038166cfcb03ea4643a

Download Submit
C:\Users\Admin\AppData\Local\11b45a85-78da-49a2-9c10-12192fe84338\143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe

Filesize
732KB

MD5
f5dc9ce8fdcf4b5957d13f3d50ddaa51

SHA1
0f7aa15f74f755c0b316b19db8643840c7715805

SHA256
143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a

SHA512
e358544a8bf6803aad7c8c6f238dc941a744cf6cbee1676bdfa9141bd1e21f8088c4bf3aea315a11e26a5d1d60e3d5605ad357246964dfc439a9381c4f53742b

Download Submit
memory/1624-27-0x0000000000400000-0x000000000080E000-memory.dmp

Filesize
4.1MB

Download
memory/1624-25-0x0000000000400000-0x000000000080E000-memory.dmp

Filesize
4.1MB

Download
memory/1916-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1916-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1916-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1916-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1916-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2596-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2596-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2596-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2596-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2596-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2596-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2596-40-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2596-43-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2596-42-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2596-44-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2596-45-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4396-1-0x0000000002530000-0x00000000025C8000-memory.dmp

Filesize
608KB

Download
memory/4396-2-0x00000000025D0000-0x00000000026EB000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads