djvu | 9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01

Analysis

max time kernel
150s
max time network
152s
platform
windows11-21h2_x64
resource
win11-20240412-en
resource tags

arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
submitted
15/04/2024, 12:41

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General

Target
9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe
Size 810KB
Sample240415-pw4tcaee96
SHA256 9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01
MD5 013fce4523324389c1d7bb8be6cfbe5a
SHA1 52ae51dcda038278baf60b2db7633427f8c2bf78
SHA512 d8388e3aa9d4574e3e9633bbbdf9c1e5628b31d9e1888e270302fe894b06d5b8134a2d105d239bd2282272b067b97fe841333d7ce20a1b81693ab3eed8a5d072
SSDEEP 24576:550JRmnGMzPJ0uQpAKlzbk2g/o6L+yHoZLn:j0MGMzJ0NyAbDMoY3HO
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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/1172-2-0x0000000004CB0000-0x0000000004DCB000-memory.dmp	family_djvu
behavioral2/memory/3520-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3520-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3520-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3520-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3520-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3700-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3700-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3700-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3700-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3700-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3700-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3700-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3700-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3700-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3700-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3700-37-0x0000000000400000-0x0000000000537000-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
488	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-1-5-21-4041115548-3858121278-1660933110-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\7184a915-de17-43fb-94be-cd57a4e6a3d2\\9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe\" --AutoStart"	9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.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
17	api.2ip.ua
19	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1172 set thread context of 3520	1172	9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe	81
PID 1852 set thread context of 3700	1852	9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.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
3520	9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe
3520	9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe
3700	9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe
3700	9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1172 wrote to memory of 3520	1172	9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe	81
PID 1172 wrote to memory of 3520	1172	9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe	81
PID 1172 wrote to memory of 3520	1172	9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe	81
PID 1172 wrote to memory of 3520	1172	9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe	81
PID 1172 wrote to memory of 3520	1172	9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe	81
PID 1172 wrote to memory of 3520	1172	9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe	81
PID 1172 wrote to memory of 3520	1172	9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe	81
PID 1172 wrote to memory of 3520	1172	9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe	81
PID 1172 wrote to memory of 3520	1172	9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe	81
PID 1172 wrote to memory of 3520	1172	9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe	81
PID 3520 wrote to memory of 488	3520	9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe	82
PID 3520 wrote to memory of 488	3520	9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe	82
PID 3520 wrote to memory of 488	3520	9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe	82
PID 3520 wrote to memory of 1852	3520	9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe	83
PID 3520 wrote to memory of 1852	3520	9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe	83
PID 3520 wrote to memory of 1852	3520	9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe	83
PID 1852 wrote to memory of 3700	1852	9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe	86
PID 1852 wrote to memory of 3700	1852	9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe	86
PID 1852 wrote to memory of 3700	1852	9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe	86
PID 1852 wrote to memory of 3700	1852	9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe	86
PID 1852 wrote to memory of 3700	1852	9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe	86
PID 1852 wrote to memory of 3700	1852	9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe	86
PID 1852 wrote to memory of 3700	1852	9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe	86
PID 1852 wrote to memory of 3700	1852	9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe	86
PID 1852 wrote to memory of 3700	1852	9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe	86
PID 1852 wrote to memory of 3700	1852	9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe	86

C:\Users\Admin\AppData\Local\Temp\9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe
"C:\Users\Admin\AppData\Local\Temp\9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1172
- C:\Users\Admin\AppData\Local\Temp\9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe
  "C:\Users\Admin\AppData\Local\Temp\9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3520
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\7184a915-de17-43fb-94be-cd57a4e6a3d2" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:488
- - C:\Users\Admin\AppData\Local\Temp\9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe
    "C:\Users\Admin\AppData\Local\Temp\9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1852
  - - C:\Users\Admin\AppData\Local\Temp\9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe
      "C:\Users\Admin\AppData\Local\Temp\9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:3700

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

24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Size 1KB
SHA256 8e9e392dc9b61b203b94259919869e3384fe634a6c76da3b817ecb1e5566c669
MD5 d1dd7a00ce73518932c811f701be1f45
SHA1 6ed624589a811394e17535336ff8fea311ce10cf
SHA512 885e1bdea6ac9f0823c13a7c5e0a5fca1e3b51d1fbdb049ca74e900ebb73ed536554db013055eb9404bc769b1b26bc14c4e96080c2fe588b234d3aab86547ea7
MD5 SHA1 SHA512

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CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 724B
SHA256 58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5
MD5 8202a1cd02e7d69597995cabbe881a12
SHA1 8858d9d934b7aa9330ee73de6c476acf19929ff6
SHA512 97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9
MD5 SHA1 SHA512

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24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Size 410B
SHA256 a42da992eecee26ed62903d7e14176a748661b258ca11cf3cd9ddcc84218b6ff
MD5 a6cc1bbdbb023e0fd52106deafb26938
SHA1 4944a5785f1422ea248be4f6d0982a9ab0b32421
SHA512 83580f9427a81c4c7378ce296e5a3c04899e7381b760e082ccd33ed72fe21a9c0f36173a2199eb9e7a95e9f299abdf508f1921df72729e0cec8aa7a3e0bad968
MD5 SHA1 SHA512

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CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 392B
SHA256 78a0520bae8bcfe8474e9e24b6fd014c4e1d4187fb3dd09faff8cfa1ec41bb4b
MD5 999e16e5be5fab035d28393e4ae45c17
SHA1 874ca1c6b20bdf6826c5b88746d7f5c95ccd5d88
SHA512 ebc91b77491429c808d10c3820c57fad27d82b438ad6d62a6a56ad7c248f66d4debae602e244461e6d9e64d7664487deb8310ad4da2332cb0c6fec96a9e1b97e
MD5 SHA1 SHA512

Submit Download

9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe

Path C:\Users\Admin\AppData\Local\7184a915-de17-43fb-94be-cd57a4e6a3d2\9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01.exe
Size 810KB
SHA256 9602929e8c89f93b7f41a682cf35de3d731651c5f07909d8371ec7311d606a01
MD5 013fce4523324389c1d7bb8be6cfbe5a
SHA1 52ae51dcda038278baf60b2db7633427f8c2bf78
SHA512 d8388e3aa9d4574e3e9633bbbdf9c1e5628b31d9e1888e270302fe894b06d5b8134a2d105d239bd2282272b067b97fe841333d7ce20a1b81693ab3eed8a5d072
SSDEEP 24576:550JRmnGMzPJ0uQpAKlzbk2g/o6L+yHoZLn:j0MGMzJ0NyAbDMoY3HO
MD5 SHA1 SHA512 SSDEEP

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memory/1172-1-0x0000000004C10000-0x0000000004CA4000-memory.dmp

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memory/1172-2-0x0000000004CB0000-0x0000000004DCB000-memory.dmp

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memory/1852-18-0x0000000004AD0000-0x0000000004B69000-memory.dmp

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memory/3520-4-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3520-15-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3520-6-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3520-3-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3520-5-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3700-20-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3700-22-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3700-21-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3700-27-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3700-28-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3700-29-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3700-32-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3700-34-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3700-35-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3700-36-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3700-37-0x0000000000400000-0x0000000000537000-memory.dmp

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