djvu | 994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b

Analysis

max time kernel
148s
max time network
124s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
09-05-2024 01:47

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General

Target

994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe
Size

761KB
MD5

cbc0fb83669b4e7e03caa5c74f06be9a
SHA1

72dfbdd5cdb7b3d4a856bfc5a57c437ff354cfbf
SHA256

994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b
SHA512

50aaad65599e7208e03fb41208f7c0c7e59b3320eafcf584c480f7bc3df819b72b1460006697050cf6ccd705c72e0349b5d11377782c6180a15f2961a3a857ee
SSDEEP

12288:jriKZ0glHC70fdkwte/TMM0GKBlaHRUwQEvjAQ1UAXOhPlsOMzGY3X:jrBZ0gE70dtughGWoRXjAachSOMzt

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.qepi
offline_id
jgILOjDrBgyzY4JmT3B2jDSyBmDPBruKk8bKs6t1
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/665ddae3fc3cd10bbaaa4350408b196920240504141005/4cae7e 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: 0867PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 13 IoCs

resource	yara_rule
behavioral1/memory/3052-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2844-6-0x00000000044B0000-0x00000000045CB000-memory.dmp	family_djvu
behavioral1/memory/3052-7-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3052-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3052-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2952-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2952-45-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2952-46-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2952-47-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2952-50-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2952-53-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2952-52-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2952-54-0x0000000000400000-0x0000000000537000-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
2704	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-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\5ffece36-c2ec-4f06-88a0-513c1cb1c1d7\\994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe\" --AutoStart"	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.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
4	api.2ip.ua
9	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2844 set thread context of 3052	2844	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	28
PID 2476 set thread context of 2952	2476	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	32

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
3052	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe
3052	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe
2952	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe
2952	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2844 wrote to memory of 3052	2844	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	28
PID 2844 wrote to memory of 3052	2844	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	28
PID 2844 wrote to memory of 3052	2844	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	28
PID 2844 wrote to memory of 3052	2844	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	28
PID 2844 wrote to memory of 3052	2844	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	28
PID 2844 wrote to memory of 3052	2844	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	28
PID 2844 wrote to memory of 3052	2844	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	28
PID 2844 wrote to memory of 3052	2844	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	28
PID 2844 wrote to memory of 3052	2844	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	28
PID 2844 wrote to memory of 3052	2844	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	28
PID 2844 wrote to memory of 3052	2844	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	28
PID 3052 wrote to memory of 2704	3052	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	30
PID 3052 wrote to memory of 2704	3052	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	30
PID 3052 wrote to memory of 2704	3052	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	30
PID 3052 wrote to memory of 2704	3052	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	30
PID 3052 wrote to memory of 2476	3052	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	31
PID 3052 wrote to memory of 2476	3052	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	31
PID 3052 wrote to memory of 2476	3052	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	31
PID 3052 wrote to memory of 2476	3052	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	31
PID 2476 wrote to memory of 2952	2476	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	32
PID 2476 wrote to memory of 2952	2476	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	32
PID 2476 wrote to memory of 2952	2476	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	32
PID 2476 wrote to memory of 2952	2476	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	32
PID 2476 wrote to memory of 2952	2476	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	32
PID 2476 wrote to memory of 2952	2476	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	32
PID 2476 wrote to memory of 2952	2476	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	32
PID 2476 wrote to memory of 2952	2476	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	32
PID 2476 wrote to memory of 2952	2476	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	32
PID 2476 wrote to memory of 2952	2476	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	32
PID 2476 wrote to memory of 2952	2476	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	32

C:\Users\Admin\AppData\Local\Temp\994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe
"C:\Users\Admin\AppData\Local\Temp\994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2844
- C:\Users\Admin\AppData\Local\Temp\994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe
  "C:\Users\Admin\AppData\Local\Temp\994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3052
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\5ffece36-c2ec-4f06-88a0-513c1cb1c1d7" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2704
- - C:\Users\Admin\AppData\Local\Temp\994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe
    "C:\Users\Admin\AppData\Local\Temp\994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2476
  - - C:\Users\Admin\AppData\Local\Temp\994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe
      "C:\Users\Admin\AppData\Local\Temp\994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:2952

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

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Filesize
1KB

MD5
980db886f2cbf3110b71813f1c55cca9

SHA1
a574aa7b6f0ae88191d135161b0329202957aba3

SHA256
ca3b546e0b8ceb8c92416dc5081dbe1f5ea28c80fc867078c966c981138b7cf6

SHA512
52a238e4ae4351b9a8074032a909fdf7b86da856f6fb430eec3fa58b6745a83a57d9a3e1c91f718ea102c131fb34230ebcb9ae8e32d86f84e75168975329abca

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
905011c219f2e47e89d7b5aeac544e56

SHA1
8c8daafeb124115d535e2168ef859944921ba08a

SHA256
7ac3af74f0086deda7fa5ce7497237b54c2db3494b07033a8786cee421eb2565

SHA512
2bfbc26db6bd2fd2d5e8da0bc94b2ed89698ef207cf7d4b5bc678478318857b3b6288ee341adf51467b526485ee46a4a6bc25eedf455f7bce6194dd6afbf8f5e

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
344B

MD5
49022d02e79cf17c70ec2d1d5d459d62

SHA1
e6c40678def06a589d28e6a97c47b809167ca5e3

SHA256
deef1f4773641c41bc0ad8d419b2364b9b69da3623ffc895e9c3af836a5e9f44

SHA512
eb71093bd4b4dc65e4bdf90ba9f1b465c9cf230837ba69f6b74e5ffa43fe4355d530eaef21bd7a8e6311a070cc62b253e0eb3d8bcf8b079ea11df3cfe18f6486

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

Filesize
392B

MD5
2a4a89bfe257637560575429658f1d9a

SHA1
173fd0aee8f18c7a596dc8da4f512d848de6dd67

SHA256
6711e4fb1348e5c3756c6de2b08a2fae7e6882e278eeab1915eab3d229b9717f

SHA512
a0b30f01a869b08c438b097b2bdaf625f71f790e9208db10155601bfce6bfb4bf64e583df2d26449114a1ddb9f9207fb7322b73d367a15e503ab0ee0b828b57c

Download Submit
C:\Users\Admin\AppData\Local\5ffece36-c2ec-4f06-88a0-513c1cb1c1d7\994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe

Filesize
761KB

MD5
cbc0fb83669b4e7e03caa5c74f06be9a

SHA1
72dfbdd5cdb7b3d4a856bfc5a57c437ff354cfbf

SHA256
994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b

SHA512
50aaad65599e7208e03fb41208f7c0c7e59b3320eafcf584c480f7bc3df819b72b1460006697050cf6ccd705c72e0349b5d11377782c6180a15f2961a3a857ee

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab3514.tmp

Filesize
65KB

MD5
ac05d27423a85adc1622c714f2cb6184

SHA1
b0fe2b1abddb97837ea0195be70ab2ff14d43198

SHA256
c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

SHA512
6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

Download Submit
memory/2476-29-0x0000000002B80000-0x0000000002C12000-memory.dmp

Filesize
584KB

Download
memory/2844-0-0x00000000002E0000-0x0000000000372000-memory.dmp

Filesize
584KB

Download
memory/2844-6-0x00000000044B0000-0x00000000045CB000-memory.dmp

Filesize
1.1MB

Download
memory/2844-1-0x00000000002E0000-0x0000000000372000-memory.dmp

Filesize
584KB

Download
memory/2952-46-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2952-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2952-45-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2952-47-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2952-50-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2952-53-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2952-52-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2952-54-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3052-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3052-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3052-7-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3052-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3052-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download