djvu | 110eedf789feeb746b14dfc2d1a93aa580dfa110a4cb3073ce4d9460de5309cf

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
08/05/2024, 16:20

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General

Target
file.exe
Size 722KB
Sample240508-ts3t4afd73
SHA256 110eedf789feeb746b14dfc2d1a93aa580dfa110a4cb3073ce4d9460de5309cf
MD5 029f0e789f5b8d0b3f519b5bb9102754
SHA1 51752b151911083df2f34fde4ae2aaf91de5e930
SHA512 d8d2783d6d9707e1cc7347a8cc165ea2ed50e676f34882a36467205006a1c80aa11f1d84c157f57e227a497be769e45a6f82edc4b4a6fa2f015f21931bdbf06a
SSDEEP 12288:d/ZTwWDTxvNaEXzoOOIIaMowVsKRunMBeJA5EBPYplkhNPgmux2LvJ8n3xs61D0:dD3XzHOlaqVs+unwGAoY3kLPbTN61D0
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.qeza
offline_id
jgILOjDrBgyzY4JmT3B2jDSyBmDPBruKk8bKs6t1
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: 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: 0869PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 19 IoCs

resource	yara_rule
behavioral2/memory/1164-2-0x0000000003760000-0x000000000387B000-memory.dmp	family_djvu
behavioral2/memory/1032-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1032-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1032-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1032-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1032-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2736-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2736-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2736-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2736-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2736-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2736-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2736-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2128-32-0x0000000000400000-0x0000000001A7F000-memory.dmp	family_djvu
behavioral2/memory/2736-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2736-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2736-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2736-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2736-39-0x0000000000400000-0x0000000000537000-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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	file.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4732	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-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\f5e0d943-785f-49a2-bc2e-149062f7f7d2\\file.exe\" --AutoStart"	file.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
13	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1164 set thread context of 1032	1164	file.exe	82
PID 2128 set thread context of 2736	2128	file.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
1032	file.exe
1032	file.exe
2736	file.exe
2736	file.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1164 wrote to memory of 1032	1164	file.exe	82
PID 1164 wrote to memory of 1032	1164	file.exe	82
PID 1164 wrote to memory of 1032	1164	file.exe	82
PID 1164 wrote to memory of 1032	1164	file.exe	82
PID 1164 wrote to memory of 1032	1164	file.exe	82
PID 1164 wrote to memory of 1032	1164	file.exe	82
PID 1164 wrote to memory of 1032	1164	file.exe	82
PID 1164 wrote to memory of 1032	1164	file.exe	82
PID 1164 wrote to memory of 1032	1164	file.exe	82
PID 1164 wrote to memory of 1032	1164	file.exe	82
PID 1032 wrote to memory of 4732	1032	file.exe	83
PID 1032 wrote to memory of 4732	1032	file.exe	83
PID 1032 wrote to memory of 4732	1032	file.exe	83
PID 1032 wrote to memory of 2128	1032	file.exe	84
PID 1032 wrote to memory of 2128	1032	file.exe	84
PID 1032 wrote to memory of 2128	1032	file.exe	84
PID 2128 wrote to memory of 2736	2128	file.exe	86
PID 2128 wrote to memory of 2736	2128	file.exe	86
PID 2128 wrote to memory of 2736	2128	file.exe	86
PID 2128 wrote to memory of 2736	2128	file.exe	86
PID 2128 wrote to memory of 2736	2128	file.exe	86
PID 2128 wrote to memory of 2736	2128	file.exe	86
PID 2128 wrote to memory of 2736	2128	file.exe	86
PID 2128 wrote to memory of 2736	2128	file.exe	86
PID 2128 wrote to memory of 2736	2128	file.exe	86
PID 2128 wrote to memory of 2736	2128	file.exe	86

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1164
- C:\Users\Admin\AppData\Local\Temp\file.exe
  "C:\Users\Admin\AppData\Local\Temp\file.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1032
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\f5e0d943-785f-49a2-bc2e-149062f7f7d2" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:4732
- - C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2128
  - - C:\Users\Admin\AppData\Local\Temp\file.exe
      "C:\Users\Admin\AppData\Local\Temp\file.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:2736

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 16ed7a2c43f928bcc7ec8f7e93082abda7106a63b87e747dcca57f1cee05ccc9
MD5 098e3fff2705346ece787c21ac03d0f3
SHA1 8f6923a4871978ebb148a5f1cd34530887b0f0e7
SHA512 2977d9e735e742cdef931554063ce606e3ea9ef4bbf5f405bda639cca10444d0882bc5f48067e5b0e847af7ba069a2fbd97f386937fd3b19b5444d208d962e7e
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

Submit Download

24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Size 410B
SHA256 6dfd6ec3cc86cd9f4294fb9ad02575059b8259e8dc49ab37b67b4e8c70c20f4a
MD5 756784004eb69ca2b64e32a5912c811d
SHA1 c589f7775dea46ed23ce31d51d8330b9e592b426
SHA512 a209a65157a8dd648e6c5ae93e80bee862c9f1bead287a0610356315b67fc879f54f882ef9206e68eeb66b462d4225697170b5360302fa6e852b4f5c494f938f
MD5 SHA1 SHA512

Submit Download

CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 392B
SHA256 205b193a508badd1039fbf5b8cb4dcb50d3dce004cca112791768602d29ef54c
MD5 020f7bea999cf01510b936fa11d3d08d
SHA1 b391321c8f178866d292243d21a27f432f8d2c9e
SHA512 7239a715b5c138aff06063ef060f96bb79cbaa9c28a85955184cd0426e595475f7291050bd8aa5735579955735ec2365e59945be12dd24ad59f17fc7772894de
MD5 SHA1 SHA512

Submit Download

file.exe

Path C:\Users\Admin\AppData\Local\f5e0d943-785f-49a2-bc2e-149062f7f7d2\file.exe
Size 722KB
SHA256 110eedf789feeb746b14dfc2d1a93aa580dfa110a4cb3073ce4d9460de5309cf
MD5 029f0e789f5b8d0b3f519b5bb9102754
SHA1 51752b151911083df2f34fde4ae2aaf91de5e930
SHA512 d8d2783d6d9707e1cc7347a8cc165ea2ed50e676f34882a36467205006a1c80aa11f1d84c157f57e227a497be769e45a6f82edc4b4a6fa2f015f21931bdbf06a
SSDEEP 12288:d/ZTwWDTxvNaEXzoOOIIaMowVsKRunMBeJA5EBPYplkhNPgmux2LvJ8n3xs61D0:dD3XzHOlaqVs+unwGAoY3kLPbTN61D0
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1032-5-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1032-17-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1032-6-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/1032-3-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1032-4-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/1164-1-0x0000000001C20000-0x0000000001CBF000-memory.dmp

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memory/1164-2-0x0000000003760000-0x000000000387B000-memory.dmp

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memory/2128-32-0x0000000000400000-0x0000000001A7F000-memory.dmp

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memory/2128-22-0x0000000000400000-0x0000000001A7F000-memory.dmp

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memory/2736-31-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2736-21-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2736-28-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2736-30-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2736-29-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2736-23-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2736-20-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2736-34-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2736-36-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2736-37-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2736-38-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2736-39-0x0000000000400000-0x0000000000537000-memory.dmp

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