djvu | 53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94

Analysis

max time kernel
291s
max time network
299s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
07/05/2024, 22:52

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General

Target
53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe
Size 765KB
Sample240507-2thvbace6t
SHA256 53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94
MD5 2531638a30fdddc814506d0837313313
SHA1 474f871ff088c61d4157763144b04592dfff533d
SHA512 b877608d1c32fb580de2faa15fc33de74eead9da8cb202d7a2cd87c4962478efb216d9e51163b0e2919c968ede04e15abb5f200768b76bbb0996ecdbb4ec0c29
SSDEEP 12288:USaDWZ31Zk1XAeMQWYsX68cyXtTbXStoCBBL28M19lMHkHehJj2:UzW5121j9fs7cqTbX8B66HOeh5
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://cajgtus.com/test1/get.php

Attributes

extension
.qepi
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: 0867PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 16 IoCs

resource	yara_rule
behavioral2/memory/1448-2-0x0000000004960000-0x0000000004A7B000-memory.dmp	family_djvu
behavioral2/memory/1972-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1972-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1972-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1972-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1972-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4876-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4876-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4876-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4876-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4876-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4876-42-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4876-46-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4876-45-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4876-43-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4876-47-0x0000000000400000-0x0000000000537000-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
168	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-1-5-21-160447019-1232603106-4168707212-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\81187085-9bdc-4d3c-a9c8-df904bc5aee9\\53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe\" --AutoStart"	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.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
10	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1448 set thread context of 1972	1448	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	73
PID 3528 set thread context of 4876	3528	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.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
1972	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe
1972	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe
4876	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe
4876	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1448 wrote to memory of 1972	1448	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	73
PID 1448 wrote to memory of 1972	1448	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	73
PID 1448 wrote to memory of 1972	1448	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	73
PID 1448 wrote to memory of 1972	1448	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	73
PID 1448 wrote to memory of 1972	1448	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	73
PID 1448 wrote to memory of 1972	1448	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	73
PID 1448 wrote to memory of 1972	1448	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	73
PID 1448 wrote to memory of 1972	1448	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	73
PID 1448 wrote to memory of 1972	1448	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	73
PID 1448 wrote to memory of 1972	1448	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	73
PID 1972 wrote to memory of 168	1972	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	74
PID 1972 wrote to memory of 168	1972	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	74
PID 1972 wrote to memory of 168	1972	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	74
PID 1972 wrote to memory of 3528	1972	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	75
PID 1972 wrote to memory of 3528	1972	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	75
PID 1972 wrote to memory of 3528	1972	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	75
PID 3528 wrote to memory of 4876	3528	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	77
PID 3528 wrote to memory of 4876	3528	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	77
PID 3528 wrote to memory of 4876	3528	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	77
PID 3528 wrote to memory of 4876	3528	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	77
PID 3528 wrote to memory of 4876	3528	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	77
PID 3528 wrote to memory of 4876	3528	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	77
PID 3528 wrote to memory of 4876	3528	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	77
PID 3528 wrote to memory of 4876	3528	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	77
PID 3528 wrote to memory of 4876	3528	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	77
PID 3528 wrote to memory of 4876	3528	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	77

C:\Users\Admin\AppData\Local\Temp\53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe
"C:\Users\Admin\AppData\Local\Temp\53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1448
- C:\Users\Admin\AppData\Local\Temp\53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe
  "C:\Users\Admin\AppData\Local\Temp\53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1972
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\81187085-9bdc-4d3c-a9c8-df904bc5aee9" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:168
- - C:\Users\Admin\AppData\Local\Temp\53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe
    "C:\Users\Admin\AppData\Local\Temp\53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:3528
  - - C:\Users\Admin\AppData\Local\Temp\53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe
      "C:\Users\Admin\AppData\Local\Temp\53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:4876

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 864b8a64213d4bcc8aa1fec69ac781d419bb28ab933bdac6e76368f8ac40984b
MD5 563bff6b7840b4d73b44bcebca8e5e9b
SHA1 e6075311e9745b7890cbcec45c9c16bf4fc501b5
SHA512 fe485a94922fa59e1d60bc5dbedba3fcc8e39961ff2357c1e40c42430388d1c14fd0762ff1aa919fabc058a579f7b161c27bfeb2e43b1a1129e72e178fb26a23
MD5 SHA1 SHA512

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CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 392B
SHA256 de5a0911e5f30fb5a7c6fb60bc285b3fd8b84618c875f56cf7373c230f202802
MD5 c2fcceed8d31e85587a1554b6dcd3964
SHA1 8e99cd2402020ebbc9cc2956f9d20c7004811332
SHA512 dc31a1484550a61e4c880e07d961b37988a063e2f281bd817084dde11d79e0dd5c2b1c7d328e7f1729d52bb5c01c6f8609e6ce04e8061f5d34000f119009a567
MD5 SHA1 SHA512

Submit Download

53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe

Path C:\Users\Admin\AppData\Local\81187085-9bdc-4d3c-a9c8-df904bc5aee9\53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe
Size 765KB
SHA256 53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94
MD5 2531638a30fdddc814506d0837313313
SHA1 474f871ff088c61d4157763144b04592dfff533d
SHA512 b877608d1c32fb580de2faa15fc33de74eead9da8cb202d7a2cd87c4962478efb216d9e51163b0e2919c968ede04e15abb5f200768b76bbb0996ecdbb4ec0c29
SSDEEP 12288:USaDWZ31Zk1XAeMQWYsX68cyXtTbXStoCBBL28M19lMHkHehJj2:UzW5121j9fs7cqTbX8B66HOeh5
MD5 SHA1 SHA512 SSDEEP

Submit Download

bowsakkdestx.txt

Path C:\Users\Admin\AppData\Local\bowsakkdestx.txt
Size 1KB
SHA256 9209f28503a22ed770a382f259c02fddee24866b59c96d12123a87973371566f
MD5 2bc93bb082701f2fa691913b0c70a1f2
SHA1 cc235d9e20ddc736147087fb38adeede65dd67d2
SHA512 d62187ca70541124750eefb1f4a5b8cbb17f21afe6c3a77d5e7c3cd1129d56fcdde4d9e65f9642d4605d120dc558c2ed7d9703abcb0ab9d964ea408ffa9f6882
MD5 SHA1 SHA512

Submit Download

memory/1448-2-0x0000000004960000-0x0000000004A7B000-memory.dmp

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memory/1448-1-0x0000000002C50000-0x0000000002CF0000-memory.dmp

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memory/1972-6-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1972-5-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1972-19-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1972-3-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1972-4-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4876-34-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4876-27-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4876-22-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4876-38-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4876-28-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4876-42-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4876-46-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4876-45-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4876-43-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4876-47-0x0000000000400000-0x0000000000537000-memory.dmp

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