djvu | 110eedf789feeb746b14dfc2d1a93aa580dfa110a4cb3073ce4d9460de5309cf

Analysis

max time kernel
143s
max time network
121s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-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 14 IoCs

resource	yara_rule
behavioral1/memory/2688-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2688-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2688-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2924-5-0x0000000003420000-0x000000000353B000-memory.dmp	family_djvu
behavioral1/memory/2688-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2376-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2376-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2376-46-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2376-47-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2376-49-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2376-54-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2376-51-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2376-53-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2376-55-0x0000000000400000-0x0000000000537000-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
2468	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-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\4f913316-1b08-444d-ac3e-6cfed57a132a\\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
9	api.2ip.ua
3	api.2ip.ua
4	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2924 set thread context of 2688	2924	file.exe	28
PID 2660 set thread context of 2376	2660	file.exe	31

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2688	file.exe
2376	file.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2924 wrote to memory of 2688	2924	file.exe	28
PID 2924 wrote to memory of 2688	2924	file.exe	28
PID 2924 wrote to memory of 2688	2924	file.exe	28
PID 2924 wrote to memory of 2688	2924	file.exe	28
PID 2924 wrote to memory of 2688	2924	file.exe	28
PID 2924 wrote to memory of 2688	2924	file.exe	28
PID 2924 wrote to memory of 2688	2924	file.exe	28
PID 2924 wrote to memory of 2688	2924	file.exe	28
PID 2924 wrote to memory of 2688	2924	file.exe	28
PID 2924 wrote to memory of 2688	2924	file.exe	28
PID 2924 wrote to memory of 2688	2924	file.exe	28
PID 2688 wrote to memory of 2468	2688	file.exe	29
PID 2688 wrote to memory of 2468	2688	file.exe	29
PID 2688 wrote to memory of 2468	2688	file.exe	29
PID 2688 wrote to memory of 2468	2688	file.exe	29
PID 2688 wrote to memory of 2660	2688	file.exe	30
PID 2688 wrote to memory of 2660	2688	file.exe	30
PID 2688 wrote to memory of 2660	2688	file.exe	30
PID 2688 wrote to memory of 2660	2688	file.exe	30
PID 2660 wrote to memory of 2376	2660	file.exe	31
PID 2660 wrote to memory of 2376	2660	file.exe	31
PID 2660 wrote to memory of 2376	2660	file.exe	31
PID 2660 wrote to memory of 2376	2660	file.exe	31
PID 2660 wrote to memory of 2376	2660	file.exe	31
PID 2660 wrote to memory of 2376	2660	file.exe	31
PID 2660 wrote to memory of 2376	2660	file.exe	31
PID 2660 wrote to memory of 2376	2660	file.exe	31
PID 2660 wrote to memory of 2376	2660	file.exe	31
PID 2660 wrote to memory of 2376	2660	file.exe	31
PID 2660 wrote to memory of 2376	2660	file.exe	31

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:2924
- C:\Users\Admin\AppData\Local\Temp\file.exe
  "C:\Users\Admin\AppData\Local\Temp\file.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2688
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\4f913316-1b08-444d-ac3e-6cfed57a132a" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2468
- - 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:2660
  - - C:\Users\Admin\AppData\Local\Temp\file.exe
      "C:\Users\Admin\AppData\Local\Temp\file.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:2376

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 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

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24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Size 410B
SHA256 36e89d8c54634944aa2b0cc11646241eace33bc758e62d80f3aa419ba37e03a1
MD5 0c93ab739e54517a11503143aa4221b0
SHA1 0530d8d585c0a061723160ec65b2e97c28d30982
SHA512 1956e3d8b6013846660ff60d8770352467b82145a6c5ee1b29c58b8f4e13251bb164ede232a827285bb332d4b5a63c8fde0c8497c151cfaf4584c8cf88734d26
MD5 SHA1 SHA512

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94308059B57B3142E455B38A6EB92015

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Size 344B
SHA256 bd1b9c63a8ed631c623ae8c4c25b0b330c80461ec4b3e3573e80b6421386c4dd
MD5 ddfed251170f3f1d227dcfabc1856123
SHA1 2ff8953b1af885a4a0326de52d2a06ace3ec1ada
SHA512 e8c92646a43d20f2d36d90c7c5bf77cad1f5c575baedda643a8a157227136ff9a9ac16e9cbffd21b4a2c49f18a6fc44a6b9eccef578b1c07904c7f6a79108239
MD5 SHA1 SHA512

Submit Download

CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 392B
SHA256 f86b77961cdf4d01ac97273c8b08155ac5d7e13d84c70c0088f8f31da89deb4b
MD5 984ae5dd105ecff42019e9f121f9d8da
SHA1 a8002fc28d516fd2f5e992341dd6c9783c0e54c7
SHA512 9358d51867562aa5de028f8edf7517dddeedf0bf11016ef0c3989ac0d58da11f356535491a3c80458f5f685a8a91c767a6f6645391f5c49553f4271270af6bea
MD5 SHA1 SHA512

Submit Download

file.exe

Path C:\Users\Admin\AppData\Local\4f913316-1b08-444d-ac3e-6cfed57a132a\file.exe
Size 722KB
SHA256 110eedf789feeb746b14dfc2d1a93aa580dfa110a4cb3073ce4d9460de5309cf
MD5 029f0e789f5b8d0b3f519b5bb9102754
SHA1 51752b151911083df2f34fde4ae2aaf91de5e930
SHA512 d8d2783d6d9707e1cc7347a8cc165ea2ed50e676f34882a36467205006a1c80aa11f1d84c157f57e227a497be769e45a6f82edc4b4a6fa2f015f21931bdbf06a
SSDEEP 12288:d/ZTwWDTxvNaEXzoOOIIaMowVsKRunMBeJA5EBPYplkhNPgmux2LvJ8n3xs61D0:dD3XzHOlaqVs+unwGAoY3kLPbTN61D0
MD5 SHA1 SHA512 SSDEEP

Submit Download

Cab676.tmp

Path C:\Users\Admin\AppData\Local\Temp\Cab676.tmp
Size 65KB
SHA256 c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d
MD5 ac05d27423a85adc1622c714f2cb6184
SHA1 b0fe2b1abddb97837ea0195be70ab2ff14d43198
SHA512 6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d
SSDEEP 1536:drFvD2YSE/sFDqV0FJJynkAhftCvMd3coa282frgW1qgNzU:drVDJSeaDqV0FJwLhVkr282fF5U
MD5 SHA1 SHA512 SSDEEP

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memory/2376-48-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2376-55-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2376-46-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2376-33-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2376-53-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2376-51-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2376-54-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2376-49-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2376-47-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2660-30-0x00000000031D0000-0x0000000003262000-memory.dmp

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memory/2688-9-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2688-8-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2688-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

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memory/2688-4-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2688-29-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2924-7-0x0000000001A80000-0x0000000001B12000-memory.dmp

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memory/2924-1-0x0000000001A80000-0x0000000001B12000-memory.dmp

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memory/2924-5-0x0000000003420000-0x000000000353B000-memory.dmp

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memory/2924-0-0x0000000001A80000-0x0000000001B12000-memory.dmp

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