djvu | 0905ce384f22775cbf39039e92c7c35ade14ce150be8eb76ad6d5be3a09fb908

Analysis

max time kernel
144s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
28/01/2024, 21:30

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General

Target
7e0daefa772c4e91427b7e227464a94a.exe
Size 846KB
Sample240128-1cxfpsaee3
SHA256 0905ce384f22775cbf39039e92c7c35ade14ce150be8eb76ad6d5be3a09fb908
MD5 7e0daefa772c4e91427b7e227464a94a
SHA1 47b45eae10de91705fb957be36415a0a3575ae3d
SHA512 cd60fc07593d242fe9b2e6ae74c340d36c905b8692f11df78ba15b92b52eaf0e4912777e179ed1d2a840c00fbc060ea86c8e82c506c00dd64efff84b5f0a9650
SSDEEP 24576:0OeSD0Ks9nL9wm1saIFLe4kjDtbuaPWAEDq/:0hL9w/e4sDYa+PDq
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://astdg.top/nddddhsspen6/get.php

Attributes

extension
.moqs
offline_id
CatwRkqdYh2Jomn6DqwFoGgcSbDsle1xlE1NPtt1
payload_url
http://securebiz.org/dl/build2.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. You can get and look video overview decrypt tool: https://we.tl/t-N3p42CffoV Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. 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: 0318ewgfDd

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 17 IoCs

resource	yara_rule
behavioral2/memory/2348-2-0x00000000022B0000-0x00000000023CB000-memory.dmp	family_djvu
behavioral2/memory/2500-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2500-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2500-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2500-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2500-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4364-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4364-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4364-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4364-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4364-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4364-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4364-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4364-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4364-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4364-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4364-37-0x0000000000400000-0x0000000000537000-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-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	7e0daefa772c4e91427b7e227464a94a.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2944	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-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\56a91300-2e67-458d-ba1a-4b11e616813f\\7e0daefa772c4e91427b7e227464a94a.exe\" --AutoStart"	7e0daefa772c4e91427b7e227464a94a.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
7	api.2ip.ua
8	api.2ip.ua
20	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2348 set thread context of 2500	2348	7e0daefa772c4e91427b7e227464a94a.exe	85
PID 4008 set thread context of 4364	4008	7e0daefa772c4e91427b7e227464a94a.exe	89

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
2500	7e0daefa772c4e91427b7e227464a94a.exe
2500	7e0daefa772c4e91427b7e227464a94a.exe
4364	7e0daefa772c4e91427b7e227464a94a.exe
4364	7e0daefa772c4e91427b7e227464a94a.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2348 wrote to memory of 2500	2348	7e0daefa772c4e91427b7e227464a94a.exe	85
PID 2348 wrote to memory of 2500	2348	7e0daefa772c4e91427b7e227464a94a.exe	85
PID 2348 wrote to memory of 2500	2348	7e0daefa772c4e91427b7e227464a94a.exe	85
PID 2348 wrote to memory of 2500	2348	7e0daefa772c4e91427b7e227464a94a.exe	85
PID 2348 wrote to memory of 2500	2348	7e0daefa772c4e91427b7e227464a94a.exe	85
PID 2348 wrote to memory of 2500	2348	7e0daefa772c4e91427b7e227464a94a.exe	85
PID 2348 wrote to memory of 2500	2348	7e0daefa772c4e91427b7e227464a94a.exe	85
PID 2348 wrote to memory of 2500	2348	7e0daefa772c4e91427b7e227464a94a.exe	85
PID 2348 wrote to memory of 2500	2348	7e0daefa772c4e91427b7e227464a94a.exe	85
PID 2348 wrote to memory of 2500	2348	7e0daefa772c4e91427b7e227464a94a.exe	85
PID 2500 wrote to memory of 2944	2500	7e0daefa772c4e91427b7e227464a94a.exe	86
PID 2500 wrote to memory of 2944	2500	7e0daefa772c4e91427b7e227464a94a.exe	86
PID 2500 wrote to memory of 2944	2500	7e0daefa772c4e91427b7e227464a94a.exe	86
PID 2500 wrote to memory of 4008	2500	7e0daefa772c4e91427b7e227464a94a.exe	87
PID 2500 wrote to memory of 4008	2500	7e0daefa772c4e91427b7e227464a94a.exe	87
PID 2500 wrote to memory of 4008	2500	7e0daefa772c4e91427b7e227464a94a.exe	87
PID 4008 wrote to memory of 4364	4008	7e0daefa772c4e91427b7e227464a94a.exe	89
PID 4008 wrote to memory of 4364	4008	7e0daefa772c4e91427b7e227464a94a.exe	89
PID 4008 wrote to memory of 4364	4008	7e0daefa772c4e91427b7e227464a94a.exe	89
PID 4008 wrote to memory of 4364	4008	7e0daefa772c4e91427b7e227464a94a.exe	89
PID 4008 wrote to memory of 4364	4008	7e0daefa772c4e91427b7e227464a94a.exe	89
PID 4008 wrote to memory of 4364	4008	7e0daefa772c4e91427b7e227464a94a.exe	89
PID 4008 wrote to memory of 4364	4008	7e0daefa772c4e91427b7e227464a94a.exe	89
PID 4008 wrote to memory of 4364	4008	7e0daefa772c4e91427b7e227464a94a.exe	89
PID 4008 wrote to memory of 4364	4008	7e0daefa772c4e91427b7e227464a94a.exe	89
PID 4008 wrote to memory of 4364	4008	7e0daefa772c4e91427b7e227464a94a.exe	89

C:\Users\Admin\AppData\Local\Temp\7e0daefa772c4e91427b7e227464a94a.exe
"C:\Users\Admin\AppData\Local\Temp\7e0daefa772c4e91427b7e227464a94a.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2348
- C:\Users\Admin\AppData\Local\Temp\7e0daefa772c4e91427b7e227464a94a.exe
  "C:\Users\Admin\AppData\Local\Temp\7e0daefa772c4e91427b7e227464a94a.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2500
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\56a91300-2e67-458d-ba1a-4b11e616813f" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2944
- - C:\Users\Admin\AppData\Local\Temp\7e0daefa772c4e91427b7e227464a94a.exe
    "C:\Users\Admin\AppData\Local\Temp\7e0daefa772c4e91427b7e227464a94a.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4008
  - - C:\Users\Admin\AppData\Local\Temp\7e0daefa772c4e91427b7e227464a94a.exe
      "C:\Users\Admin\AppData\Local\Temp\7e0daefa772c4e91427b7e227464a94a.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:4364

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 972331bf876251e477d6232910b63cc2901ea9a039f03161b07bd4851d1452ab
MD5 7e620bb51c6346619ece5d41f4ac9ccf
SHA1 55f8435cc4f740be20cc8f3e1f3709b3e37bff89
SHA512 4b9a134d298f454348c3bdd274fa872df5d9e8fd107dce8792430837ab934c611eef26a2e0ec8bbc88bfc94a5b0c0e6add257ff1abcecf8fe6b3dddd1bb14874
MD5 SHA1 SHA512

Submit Download

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 63cbd31fb5bddf2dbaf49a5659f36f98bde8e410d6c3aaee5ca059cd2bd44f66
MD5 c642ff867b62d9b88eca2ef043df3d74
SHA1 640cfee218cc457492d1bbe3974093d5cf2dc287
SHA512 9896aa1fde30c2b14862551ec013ab188d1496fbf332a2afecf81a1cce3ce37092bcfb1b7a7528e12c5ae4c4b1c1bf7af5fa0fc43aa78733b87f5e549e7164c1
MD5 SHA1 SHA512

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CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 392B
SHA256 cc15bc48459238bdf9c0c0bd61fe7072e110bf758aa75025630e11531ab5082b
MD5 335d879333160cef5e00aff29c9e4502
SHA1 7fd8518e51506d6bbf3910a78b890fd7e300542c
SHA512 9437b8045ce462131f74ade7081de1bf7eb0513b1b85f08c1fa5e3f477fc5687d0bfae4cfc984ed0bbc19dc90c26720baa5c54953038e4f004d8ce341d05bf14
MD5 SHA1 SHA512

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7e0daefa772c4e91427b7e227464a94a.exe

Path C:\Users\Admin\AppData\Local\56a91300-2e67-458d-ba1a-4b11e616813f\7e0daefa772c4e91427b7e227464a94a.exe
Size 846KB
SHA256 0905ce384f22775cbf39039e92c7c35ade14ce150be8eb76ad6d5be3a09fb908
MD5 7e0daefa772c4e91427b7e227464a94a
SHA1 47b45eae10de91705fb957be36415a0a3575ae3d
SHA512 cd60fc07593d242fe9b2e6ae74c340d36c905b8692f11df78ba15b92b52eaf0e4912777e179ed1d2a840c00fbc060ea86c8e82c506c00dd64efff84b5f0a9650
SSDEEP 24576:0OeSD0Ks9nL9wm1saIFLe4kjDtbuaPWAEDq/:0hL9w/e4sDYa+PDq
MD5 SHA1 SHA512 SSDEEP

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memory/2348-1-0x0000000000690000-0x0000000000730000-memory.dmp

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memory/2348-2-0x00000000022B0000-0x00000000023CB000-memory.dmp

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memory/2500-4-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2500-15-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2500-6-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2500-3-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2500-5-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4008-18-0x0000000002130000-0x00000000021D0000-memory.dmp

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memory/4364-20-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4364-22-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4364-21-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4364-27-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4364-28-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4364-29-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4364-31-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4364-33-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4364-34-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4364-35-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4364-37-0x0000000000400000-0x0000000000537000-memory.dmp

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