djvu | eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c

Analysis

max time kernel
299s
max time network
298s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
08/05/2024, 00:20

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General

Target
eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe
Size 766KB
Sample240508-amx7wabb89
SHA256 eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c
MD5 1584456dc988f43daeadb3a3a23767aa
SHA1 f1aa5793fa5c842898112a167517cf661fe434ec
SHA512 3cbf62c3fd738cb3046134534ad1a8f216b44d80ebd49fc88c96bb0d0b52b1f0f1c8b212379a3c39b918c5d76385e780fcb6712572477c10de214597ef48aea4
SSDEEP 12288:r152ZhqTkRjw2H1D9kiEEY06YTYpvRX0aaPTJKxyD+5sro2:r/KEoH1Pj6j5faPT3Dvo
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://cajgtus.com/test2/get.php

Attributes

extension
.qehu
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: 0868PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 14 IoCs

resource	yara_rule
behavioral2/memory/1992-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1992-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4228-4-0x0000000004860000-0x000000000497B000-memory.dmp	family_djvu
behavioral2/memory/1992-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1992-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1992-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4376-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4376-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4376-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4376-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4376-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4376-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4376-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4376-36-0x0000000000400000-0x0000000000537000-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
216	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-1-5-21-1687926120-3022217735-1146543763-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\d0a1b677-0d1d-4ecd-86d5-594d188cee83\\eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe\" --AutoStart"	eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.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
1	api.2ip.ua
2	api.2ip.ua
12	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4228 set thread context of 1992	4228	eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe	73
PID 4632 set thread context of 4376	4632	eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe	77

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
1992	eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe
1992	eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe
4376	eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe
4376	eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4228 wrote to memory of 1992	4228	eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe	73
PID 4228 wrote to memory of 1992	4228	eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe	73
PID 4228 wrote to memory of 1992	4228	eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe	73
PID 4228 wrote to memory of 1992	4228	eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe	73
PID 4228 wrote to memory of 1992	4228	eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe	73
PID 4228 wrote to memory of 1992	4228	eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe	73
PID 4228 wrote to memory of 1992	4228	eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe	73
PID 4228 wrote to memory of 1992	4228	eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe	73
PID 4228 wrote to memory of 1992	4228	eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe	73
PID 4228 wrote to memory of 1992	4228	eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe	73
PID 1992 wrote to memory of 216	1992	eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe	74
PID 1992 wrote to memory of 216	1992	eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe	74
PID 1992 wrote to memory of 216	1992	eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe	74
PID 1992 wrote to memory of 4632	1992	eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe	75
PID 1992 wrote to memory of 4632	1992	eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe	75
PID 1992 wrote to memory of 4632	1992	eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe	75
PID 4632 wrote to memory of 4376	4632	eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe	77
PID 4632 wrote to memory of 4376	4632	eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe	77
PID 4632 wrote to memory of 4376	4632	eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe	77
PID 4632 wrote to memory of 4376	4632	eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe	77
PID 4632 wrote to memory of 4376	4632	eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe	77
PID 4632 wrote to memory of 4376	4632	eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe	77
PID 4632 wrote to memory of 4376	4632	eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe	77
PID 4632 wrote to memory of 4376	4632	eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe	77
PID 4632 wrote to memory of 4376	4632	eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe	77
PID 4632 wrote to memory of 4376	4632	eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe	77

C:\Users\Admin\AppData\Local\Temp\eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe
"C:\Users\Admin\AppData\Local\Temp\eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4228
- C:\Users\Admin\AppData\Local\Temp\eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe
  "C:\Users\Admin\AppData\Local\Temp\eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1992
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\d0a1b677-0d1d-4ecd-86d5-594d188cee83" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:216
- - C:\Users\Admin\AppData\Local\Temp\eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe
    "C:\Users\Admin\AppData\Local\Temp\eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4632
  - - C:\Users\Admin\AppData\Local\Temp\eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe
      "C:\Users\Admin\AppData\Local\Temp\eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:4376

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 26f7df2742be7eae0cecb3954ab69d2f1ad25c6b63a21e3a477ea34dee8301ae
MD5 af14424bd91fa356e225129fe451aacc
SHA1 4046dc95051bf8382196ff1fec36326c22dc1aae
SHA512 362068ce189ee00c318b574ebc8fc4f2e09add21f6c79aea8fe2f69ece44c0beaeb6c7fec7297a0b758ea5b8879ab0e9993c74ab262e200e289c05833e734179
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 ac3985efac6a5b93348cbd604aa3caac62cc822b1021378d7e04d728812dc427
MD5 e160bea0293d6e7d8f0ef8635eb14c62
SHA1 8c1bf85053dd1bd48977c36e64e08a32151f0e14
SHA512 168f064694ff81faf6025553af42f14a475504823914a6ca658851e31cc577ea8cee87e5ebc1cad94f3d19abced29db47601f9da32de8f5d0583a4e49a91f4f1
MD5 SHA1 SHA512

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CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 392B
SHA256 97e8313793840841b5fa71c734574c97c98538666da1ff02fe849f91e7984228
MD5 6deaab6eb55f67d860c45e2a6505de88
SHA1 ca96d77395b98f52d63baf67d15d10f3436c1f65
SHA512 8736bc7aa5c0ec282a41fd68411767e6b5ff23579c200cc241ecdca69724a3a30e709c2c6e349e06d529c47c5ab9d808db6b17f9750ee854583c66476ef3be4d
MD5 SHA1 SHA512

Submit Download

eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe

Path C:\Users\Admin\AppData\Local\d0a1b677-0d1d-4ecd-86d5-594d188cee83\eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c.exe
Size 766KB
SHA256 eeaed762874f94b57c1250bff3f367b8e4aa204c08af0eb77abe607705ef936c
MD5 1584456dc988f43daeadb3a3a23767aa
SHA1 f1aa5793fa5c842898112a167517cf661fe434ec
SHA512 3cbf62c3fd738cb3046134534ad1a8f216b44d80ebd49fc88c96bb0d0b52b1f0f1c8b212379a3c39b918c5d76385e780fcb6712572477c10de214597ef48aea4
SSDEEP 12288:r152ZhqTkRjw2H1D9kiEEY06YTYpvRX0aaPTJKxyD+5sro2:r/KEoH1Pj6j5faPT3Dvo
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1992-6-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1992-3-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1992-19-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1992-2-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1992-5-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4228-1-0x0000000002C50000-0x0000000002CE4000-memory.dmp

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memory/4228-4-0x0000000004860000-0x000000000497B000-memory.dmp

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memory/4376-22-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4376-27-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4376-28-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4376-29-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4376-32-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4376-34-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4376-35-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4376-36-0x0000000000400000-0x0000000000537000-memory.dmp

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