djvu | f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee

Analysis

max time kernel
147s
max time network
151s
platform
windows11-21h2_x64
resource
win11-20240709-en
resource tags

arch:x64arch:x86image:win11-20240709-enlocale:en-usos:windows11-21h2-x64system
submitted
19/07/2024, 14:04

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General

Target
f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe
Size 738KB
Sample240719-rdladsvdmp
SHA256 f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee
MD5 5b59cff2798b4a245c53ce68055804a4
SHA1 d6677c9baac718bc8f7c4075ed0c6f6468fa0954
SHA512 7cf045d80c03e2d7b03c5a14832801800e461d8cd63e7fa7258abfb85df61c69facc984cac706feb2a2364a1188c092f09bfbaac9fc5ddc2a4f9ff594b799ca6
SSDEEP 12288:SuqB1BEqUFxtNBWgsljskzvWyka+5EN1WSVheIYCgl7mLBo:SPNUTH8ZBzvDk15QISV1YCk6Vo
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/4980-2-0x0000000003F00000-0x000000000401B000-memory.dmp	family_djvu
behavioral2/memory/2816-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2816-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2816-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2816-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2816-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3752-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3752-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3752-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3752-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3752-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3752-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3752-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3752-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3752-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3752-38-0x0000000000400000-0x0000000000537000-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
2520	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-1-5-21-3637748876-3197268895-3385380113-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\11d6ac13-0aa5-4573-97d4-0ddcdfb193a5\\f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe\" --AutoStart"	f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.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
17	api.2ip.ua
19	api.2ip.ua
1	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4980 set thread context of 2816	4980	f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe	82
PID 244 set thread context of 3752	244	f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe	87

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
2816	f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe
2816	f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe
3752	f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe
3752	f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4980 wrote to memory of 2816	4980	f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe	82
PID 4980 wrote to memory of 2816	4980	f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe	82
PID 4980 wrote to memory of 2816	4980	f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe	82
PID 4980 wrote to memory of 2816	4980	f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe	82
PID 4980 wrote to memory of 2816	4980	f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe	82
PID 4980 wrote to memory of 2816	4980	f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe	82
PID 4980 wrote to memory of 2816	4980	f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe	82
PID 4980 wrote to memory of 2816	4980	f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe	82
PID 4980 wrote to memory of 2816	4980	f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe	82
PID 4980 wrote to memory of 2816	4980	f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe	82
PID 2816 wrote to memory of 2520	2816	f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe	83
PID 2816 wrote to memory of 2520	2816	f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe	83
PID 2816 wrote to memory of 2520	2816	f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe	83
PID 2816 wrote to memory of 244	2816	f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe	84
PID 2816 wrote to memory of 244	2816	f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe	84
PID 2816 wrote to memory of 244	2816	f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe	84
PID 244 wrote to memory of 3752	244	f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe	87
PID 244 wrote to memory of 3752	244	f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe	87
PID 244 wrote to memory of 3752	244	f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe	87
PID 244 wrote to memory of 3752	244	f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe	87
PID 244 wrote to memory of 3752	244	f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe	87
PID 244 wrote to memory of 3752	244	f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe	87
PID 244 wrote to memory of 3752	244	f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe	87
PID 244 wrote to memory of 3752	244	f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe	87
PID 244 wrote to memory of 3752	244	f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe	87
PID 244 wrote to memory of 3752	244	f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe	87

C:\Users\Admin\AppData\Local\Temp\f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe
"C:\Users\Admin\AppData\Local\Temp\f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4980
- C:\Users\Admin\AppData\Local\Temp\f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe
  "C:\Users\Admin\AppData\Local\Temp\f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2816
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\11d6ac13-0aa5-4573-97d4-0ddcdfb193a5" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2520
- - C:\Users\Admin\AppData\Local\Temp\f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe
    "C:\Users\Admin\AppData\Local\Temp\f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:244
  - - C:\Users\Admin\AppData\Local\Temp\f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe
      "C:\Users\Admin\AppData\Local\Temp\f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:3752

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 3d8703e540264d7a1b81e1810179c3d4f9e87fd8c28a7993ad78e34eefc5192c
MD5 1b2aa14ebdddd851b50e890e05be9d7e
SHA1 939846c2ffed93fdfd763e22598c79d61000d614
SHA512 a5b6d416be53e103fe3c2eecdabadcad5b3497d246a3f99730d76784723d8e0b74e967595c0a9b15ad9d0b45f647cfea648d1f13d4a80d5295df06ff4ea02bba
MD5 SHA1 SHA512

Submit Download

B46811C17859FFB409CF0E904A4AA8F8

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
Size 170B
SHA256 9c878cf5dc713a2f5e44940298fc4974764b03bc8fe51e5fd468d4f1c283a299
MD5 14a6036fe7436a5d3ad56c16fde16553
SHA1 0f7c310b828b2f8049e9233975bad6b2149153c6
SHA512 a21bd880376c1255ee345703b46424760fe6a7ba89ffa2771a7eafe9b83dfb96c3fbf67a2a004a308d6753c4f842b691dd4c0eac747ba90d96b818c1931dfefd
MD5 SHA1 SHA512

Submit Download

f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe

Path C:\Users\Admin\AppData\Local\11d6ac13-0aa5-4573-97d4-0ddcdfb193a5\f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee.exe
Size 738KB
SHA256 f7406f510410049b863e7998ee56ed1767400ddce304fcd45aef7a89706d50ee
MD5 5b59cff2798b4a245c53ce68055804a4
SHA1 d6677c9baac718bc8f7c4075ed0c6f6468fa0954
SHA512 7cf045d80c03e2d7b03c5a14832801800e461d8cd63e7fa7258abfb85df61c69facc984cac706feb2a2364a1188c092f09bfbaac9fc5ddc2a4f9ff594b799ca6
SSDEEP 12288:SuqB1BEqUFxtNBWgsljskzvWyka+5EN1WSVheIYCgl7mLBo:SPNUTH8ZBzvDk15QISV1YCk6Vo
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/2816-6-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2816-5-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2816-17-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2816-3-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2816-4-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3752-27-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3752-20-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3752-22-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3752-28-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3752-29-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3752-35-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3752-36-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3752-33-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3752-37-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3752-38-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4980-2-0x0000000003F00000-0x000000000401B000-memory.dmp

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memory/4980-1-0x0000000003E20000-0x0000000003EBE000-memory.dmp

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