djvu | 07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99

Analysis

max time kernel
144s
max time network
126s
platform
windows11-21h2_x64
resource
win11-20240709-en
resource tags

arch:x64arch:x86image:win11-20240709-enlocale:en-usos:windows11-21h2-x64system
submitted
15/07/2024, 16:30

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General

Target
07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe
Size 839KB
Sample240715-tzvr3ascne
SHA256 07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99
MD5 ec4581a508c9c24c5bec1215c001eb6f
SHA1 6b40bc672eead05cb7d5aeab0c5c1a05bde1e623
SHA512 506f1beeb8770d8285afab77f0ee77defdcd5899bd710165d22f4f0a0e1631cd6ffa856a47c39f332dd3e6705b32aaf0ce8632982fe1abf71d34a70ac3c1a607
SSDEEP 12288:QNUkFLuwOXPjrGnkiNqiQBnLCUHtAubhExiEXkk5nYnQ8VnXEyjpNQn:KFLNaPHGZVUHtJbGxdhVYnrXEkQn
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/3064-2-0x00000000040C0000-0x00000000041DB000-memory.dmp	family_djvu
behavioral2/memory/4064-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4064-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4064-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4064-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4064-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2140-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2140-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2140-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2140-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2140-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2140-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2140-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2140-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2140-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2140-40-0x0000000000400000-0x0000000000537000-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
4556	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\\206e3c06-479e-4da9-9eda-acbde9de793d\\07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe\" --AutoStart"	07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.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
3	api.2ip.ua
7	api.2ip.ua
1	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3064 set thread context of 4064	3064	07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe	78
PID 5004 set thread context of 2140	5004	07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe	83

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
4064	07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe
4064	07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe
2140	07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe
2140	07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3064 wrote to memory of 4064	3064	07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe	78
PID 3064 wrote to memory of 4064	3064	07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe	78
PID 3064 wrote to memory of 4064	3064	07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe	78
PID 3064 wrote to memory of 4064	3064	07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe	78
PID 3064 wrote to memory of 4064	3064	07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe	78
PID 3064 wrote to memory of 4064	3064	07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe	78
PID 3064 wrote to memory of 4064	3064	07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe	78
PID 3064 wrote to memory of 4064	3064	07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe	78
PID 3064 wrote to memory of 4064	3064	07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe	78
PID 3064 wrote to memory of 4064	3064	07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe	78
PID 4064 wrote to memory of 4556	4064	07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe	79
PID 4064 wrote to memory of 4556	4064	07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe	79
PID 4064 wrote to memory of 4556	4064	07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe	79
PID 4064 wrote to memory of 5004	4064	07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe	80
PID 4064 wrote to memory of 5004	4064	07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe	80
PID 4064 wrote to memory of 5004	4064	07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe	80
PID 5004 wrote to memory of 2140	5004	07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe	83
PID 5004 wrote to memory of 2140	5004	07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe	83
PID 5004 wrote to memory of 2140	5004	07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe	83
PID 5004 wrote to memory of 2140	5004	07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe	83
PID 5004 wrote to memory of 2140	5004	07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe	83
PID 5004 wrote to memory of 2140	5004	07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe	83
PID 5004 wrote to memory of 2140	5004	07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe	83
PID 5004 wrote to memory of 2140	5004	07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe	83
PID 5004 wrote to memory of 2140	5004	07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe	83
PID 5004 wrote to memory of 2140	5004	07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe	83

C:\Users\Admin\AppData\Local\Temp\07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe
"C:\Users\Admin\AppData\Local\Temp\07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3064
- C:\Users\Admin\AppData\Local\Temp\07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe
  "C:\Users\Admin\AppData\Local\Temp\07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4064
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\206e3c06-479e-4da9-9eda-acbde9de793d" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:4556
- - C:\Users\Admin\AppData\Local\Temp\07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe
    "C:\Users\Admin\AppData\Local\Temp\07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:5004
  - - C:\Users\Admin\AppData\Local\Temp\07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe
      "C:\Users\Admin\AppData\Local\Temp\07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:2140

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 6eb82e5770172364b5e80affa07f45c9177633cba7c32835cb73ad6f392bed1c
MD5 246f447512fab05838d18759e846a77c
SHA1 b077d0e97f4acb434a9696339f2a4da707e3f90c
SHA512 5ab6905840968650de32937b8e4f2694bf1f575db468ff1e77e1e215d71a5d68ac463fd2dee56b0e86fbe63e7bfbe1da692e2614a1207fae6dbcfad03c57cc8e
MD5 SHA1 SHA512

Submit Download

B46811C17859FFB409CF0E904A4AA8F8

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
Size 170B
SHA256 dde8c0497a7952748eab4238283d82dfe69dd61e2cefb261e1257e379cccc782
MD5 51b918177b8b1cd2216120583383aac1
SHA1 ab6a69f519065ee6502cefaaa3a5f951993626e0
SHA512 2a75c8b4133ad6810cd184248e8680b7ce6d02de7fb3964d01368b3e641a15dc60d4f7807d94a51c4849a658cace09c800ddf257c861c7151941d4c2749fc0c0
MD5 SHA1 SHA512

Submit Download

07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe

Path C:\Users\Admin\AppData\Local\206e3c06-479e-4da9-9eda-acbde9de793d\07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99.exe
Size 839KB
SHA256 07e43bc515213feae5f86b8eac72580b60478226c6001cd4a5c356df3c936d99
MD5 ec4581a508c9c24c5bec1215c001eb6f
SHA1 6b40bc672eead05cb7d5aeab0c5c1a05bde1e623
SHA512 506f1beeb8770d8285afab77f0ee77defdcd5899bd710165d22f4f0a0e1631cd6ffa856a47c39f332dd3e6705b32aaf0ce8632982fe1abf71d34a70ac3c1a607
SSDEEP 12288:QNUkFLuwOXPjrGnkiNqiQBnLCUHtAubhExiEXkk5nYnQ8VnXEyjpNQn:KFLNaPHGZVUHtJbGxdhVYnrXEkQn
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/2140-31-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2140-37-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2140-40-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2140-22-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2140-24-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2140-39-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2140-38-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2140-35-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2140-30-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2140-29-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3064-1-0x0000000003F90000-0x000000000402D000-memory.dmp

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memory/3064-2-0x00000000040C0000-0x00000000041DB000-memory.dmp

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memory/4064-3-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4064-6-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4064-4-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4064-5-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4064-19-0x0000000000400000-0x0000000000537000-memory.dmp

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