djvu | 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19

Analysis

max time kernel
144s
max time network
129s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
22/05/2024, 12:52

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General

Target
3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe
Size 710KB
Sample240522-p38e4scb21
SHA256 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19
MD5 f47cff4805227d54842556b0bddaaf7e
SHA1 f734391825c9028127d49fd00dcfcc24aa801eaa
SHA512 369af8e8e589126accc108c5e86484ce71d57646b2a7ee436cc2a1a0d71ca57422681590300215b4606306d5f9df6e1264c7ec8d87da8ccf12f8054a67f8964b
SSDEEP 12288:BidJzy+JS1wz8BcokecNRgMjBoVvS27EjYkWTa5310Wh44Zh3Pfp6/yA2m:Bid1vJS1xcokeUsvS27wG4nfB6KA2m
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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 16 IoCs

resource	yara_rule
behavioral1/memory/1056-2-0x0000000004AA0000-0x0000000004BBB000-memory.dmp	family_djvu
behavioral1/memory/1020-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1020-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1020-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1020-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1020-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/444-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/444-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/444-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/444-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/444-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/444-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/444-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/444-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/444-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/444-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
384	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-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\1165bd64-e9b1-416c-8aec-766984f9cf96\\3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe\" --AutoStart"	3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.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
5	api.2ip.ua
6	api.2ip.ua
17	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1056 set thread context of 1020	1056	3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe	91
PID 2800 set thread context of 444	2800	3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe	98

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
1020	3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe
1020	3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe
444	3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe
444	3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1056 wrote to memory of 1020	1056	3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe	91
PID 1056 wrote to memory of 1020	1056	3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe	91
PID 1056 wrote to memory of 1020	1056	3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe	91
PID 1056 wrote to memory of 1020	1056	3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe	91
PID 1056 wrote to memory of 1020	1056	3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe	91
PID 1056 wrote to memory of 1020	1056	3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe	91
PID 1056 wrote to memory of 1020	1056	3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe	91
PID 1056 wrote to memory of 1020	1056	3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe	91
PID 1056 wrote to memory of 1020	1056	3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe	91
PID 1056 wrote to memory of 1020	1056	3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe	91
PID 1020 wrote to memory of 384	1020	3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe	95
PID 1020 wrote to memory of 384	1020	3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe	95
PID 1020 wrote to memory of 384	1020	3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe	95
PID 1020 wrote to memory of 2800	1020	3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe	96
PID 1020 wrote to memory of 2800	1020	3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe	96
PID 1020 wrote to memory of 2800	1020	3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe	96
PID 2800 wrote to memory of 444	2800	3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe	98
PID 2800 wrote to memory of 444	2800	3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe	98
PID 2800 wrote to memory of 444	2800	3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe	98
PID 2800 wrote to memory of 444	2800	3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe	98
PID 2800 wrote to memory of 444	2800	3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe	98
PID 2800 wrote to memory of 444	2800	3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe	98
PID 2800 wrote to memory of 444	2800	3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe	98
PID 2800 wrote to memory of 444	2800	3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe	98
PID 2800 wrote to memory of 444	2800	3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe	98
PID 2800 wrote to memory of 444	2800	3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe	98

C:\Users\Admin\AppData\Local\Temp\3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe
"C:\Users\Admin\AppData\Local\Temp\3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1056
- C:\Users\Admin\AppData\Local\Temp\3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe
  "C:\Users\Admin\AppData\Local\Temp\3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1020
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\1165bd64-e9b1-416c-8aec-766984f9cf96" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:384
- - C:\Users\Admin\AppData\Local\Temp\3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe
    "C:\Users\Admin\AppData\Local\Temp\3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2800
  - - C:\Users\Admin\AppData\Local\Temp\3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe
      "C:\Users\Admin\AppData\Local\Temp\3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:444

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4088,i,5711962389779687290,1245653010537220991,262144 --variations-seed-version --mojo-platform-channel-handle=4060 /prefetch:8
1⤵
PID:1112

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

Query Registry

T1012

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 e1dd7380c6df33cd5702b032e0e359029d3ef7630f06ceb42cfdc154fd0baf7b
MD5 6728aea2631b86a76c237508d8ba9b55
SHA1 7a670f95cac088313f7558869162fe01c6dc0ec9
SHA512 533080cd1ec40b8530cad5c9914e0a5156d225f7392283ed2607eda4f1db4a6930002274060ed9130a6f634222c2e15818e16a50579cfe7f5274d028d31212f5
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 40779d5f251e941d71bd92a992552462ecc9fdfffe60347743168883864a66ef
MD5 f3dc1d7791baccc6291802b8f9d0991d
SHA1 038ca35f7d86b8cc6275dcfae96966807625c78a
SHA512 be773163d4437e373d347e8d1aa1cdfe822da997c75d4c4dcd5d3d7ae08dd6a38cd2e8c935fe563b068485d710889b599bdf19c4284ecc75fd8904f025156eae
MD5 SHA1 SHA512

Submit Download

CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 392B
SHA256 f72c08d5c0097839018b863e63023f98789a9fc5f32728d8434bc112717b6907
MD5 077b021d03335a7e233377766c4e97aa
SHA1 8be9bed088ffcfc2d12d8b2247d8d73d09e91034
SHA512 5b240557b3738a9b05c55231066b0384fd5099bfd8ba6d0789845fc7aaab0375c9492fdd09bc36fe5b6e136ef423ad8c9bbc11ffd10b392e885eeb47d26fad41
MD5 SHA1 SHA512

Submit Download

3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe

Path C:\Users\Admin\AppData\Local\1165bd64-e9b1-416c-8aec-766984f9cf96\3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe
Size 710KB
SHA256 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19
MD5 f47cff4805227d54842556b0bddaaf7e
SHA1 f734391825c9028127d49fd00dcfcc24aa801eaa
SHA512 369af8e8e589126accc108c5e86484ce71d57646b2a7ee436cc2a1a0d71ca57422681590300215b4606306d5f9df6e1264c7ec8d87da8ccf12f8054a67f8964b
SSDEEP 12288:BidJzy+JS1wz8BcokecNRgMjBoVvS27EjYkWTa5310Wh44Zh3Pfp6/yA2m:Bid1vJS1xcokeUsvS27wG4nfB6KA2m
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/444-28-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/444-35-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/444-37-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/444-20-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/444-22-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/444-36-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/444-34-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/444-32-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/444-29-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/444-27-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1020-3-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1020-6-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1020-4-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1020-5-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1020-17-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1056-1-0x0000000004940000-0x00000000049D5000-memory.dmp

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memory/1056-2-0x0000000004AA0000-0x0000000004BBB000-memory.dmp

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