djvu | 5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695

Analysis

max time kernel
297s
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
25/04/2024, 02:37

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General

Target
5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe
Size 770KB
Sample240425-c4d7fadg59
SHA256 5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695
MD5 69eb160a5fd50c6464096d1a67c3d235
SHA1 74acc835517bf6631b24c44486f80d07b7bf153f
SHA512 e6acd87d6d57a1515ae8eca318241136b847d3ec2e36b2aa36c70ba8ced9d510f8204afdb518b2f1edf92de9a23f56705e2a804a780e0359d1fa716ed2a58019
SSDEEP 12288:7+l0naGYKVor4MXhp0P7sj2U1OFO8gWRuLSJnHHlPF0guh7TZ:7+l0dY54Opv20KOoeAnf
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.bgjs
offline_id
Z6iwSvCoAt8T8K2ROxecuXHPNHv7eDyWrc8Ks7t1
payload_url
http://sdfjhuz.com/dl/build2.exe

http://sajdfue.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/54cdfd152fe98eedb628a1f4ddb7076420240421150208/403a27 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: 0863PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 16 IoCs

resource	yara_rule
behavioral2/memory/4632-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3984-3-0x0000000004A30000-0x0000000004B4B000-memory.dmp	family_djvu
behavioral2/memory/4632-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4632-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4632-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4632-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1272-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1272-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1272-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1272-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1272-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1272-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1272-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1272-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1272-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1272-38-0x0000000000400000-0x0000000000537000-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
208	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-1-5-21-873560699-1074803302-2326074425-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\ee9cc70b-0ff6-480e-800f-bb9fab4aa81a\\5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe\" --AutoStart"	5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.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
1	api.2ip.ua
2	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3984 set thread context of 4632	3984	5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe	73
PID 1032 set thread context of 1272	1032	5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.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
4632	5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe
4632	5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe
1272	5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe
1272	5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3984 wrote to memory of 4632	3984	5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe	73
PID 3984 wrote to memory of 4632	3984	5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe	73
PID 3984 wrote to memory of 4632	3984	5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe	73
PID 3984 wrote to memory of 4632	3984	5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe	73
PID 3984 wrote to memory of 4632	3984	5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe	73
PID 3984 wrote to memory of 4632	3984	5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe	73
PID 3984 wrote to memory of 4632	3984	5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe	73
PID 3984 wrote to memory of 4632	3984	5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe	73
PID 3984 wrote to memory of 4632	3984	5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe	73
PID 3984 wrote to memory of 4632	3984	5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe	73
PID 4632 wrote to memory of 208	4632	5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe	74
PID 4632 wrote to memory of 208	4632	5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe	74
PID 4632 wrote to memory of 208	4632	5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe	74
PID 4632 wrote to memory of 1032	4632	5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe	75
PID 4632 wrote to memory of 1032	4632	5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe	75
PID 4632 wrote to memory of 1032	4632	5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe	75
PID 1032 wrote to memory of 1272	1032	5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe	77
PID 1032 wrote to memory of 1272	1032	5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe	77
PID 1032 wrote to memory of 1272	1032	5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe	77
PID 1032 wrote to memory of 1272	1032	5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe	77
PID 1032 wrote to memory of 1272	1032	5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe	77
PID 1032 wrote to memory of 1272	1032	5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe	77
PID 1032 wrote to memory of 1272	1032	5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe	77
PID 1032 wrote to memory of 1272	1032	5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe	77
PID 1032 wrote to memory of 1272	1032	5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe	77
PID 1032 wrote to memory of 1272	1032	5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe	77

C:\Users\Admin\AppData\Local\Temp\5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe
"C:\Users\Admin\AppData\Local\Temp\5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3984
- C:\Users\Admin\AppData\Local\Temp\5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe
  "C:\Users\Admin\AppData\Local\Temp\5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4632
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\ee9cc70b-0ff6-480e-800f-bb9fab4aa81a" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:208
- - C:\Users\Admin\AppData\Local\Temp\5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe
    "C:\Users\Admin\AppData\Local\Temp\5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1032
  - - C:\Users\Admin\AppData\Local\Temp\5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe
      "C:\Users\Admin\AppData\Local\Temp\5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:1272

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 9987c1e67a62f45ca1a2c38a6691c770eef2bb815f1ca3a1d1c770ead4acd49d
MD5 109ff74b0fd744dfef6650750b0a58e8
SHA1 2abe8497208744af818b0599190c83e17ef6b15e
SHA512 1b5a9a72210f6e4e1add2b8fa4ad4b8eaf8ca8a5bccdaf824f7d549d940afb03d94baae8246d1f00b303fe5f9aad6904f67df35b3c968ffd4d680bc2c8e8850b
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 3eddaeff5ba68f30fc97f8952d84cfc49b8017ae0b2d49adff89ebfc0faf4f0c
MD5 1833a4736e512b93d9a605e97220a6a2
SHA1 ff77ddf80a526edede4d2b46055bf073e8fdc46c
SHA512 6ebdbf13b0e51ed3e3b6ea31ab3320a51f44840fddacab026a5fa741a083daf2db79a90083792434bae556cccf6e70813ca98a3a30b607917dee76a990d08c0e
MD5 SHA1 SHA512

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CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 392B
SHA256 ef1ddad1a09fbda605b3bbd37903300b28935562439edc5a8a2944e136facfb6
MD5 f85b6159709904300c7cdb1413de4675
SHA1 37ec07f5145a4cda2588dd8e48fad9f38116917c
SHA512 4105e5b15cc88e96e398aa69f52f7af611fa75e75a9dc004183fb3a34508037586d6e7122584ec3426ab045c61d5585e5638a478fec01e2b933d555af9711a0f
MD5 SHA1 SHA512

Submit Download

5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe

Path C:\Users\Admin\AppData\Local\ee9cc70b-0ff6-480e-800f-bb9fab4aa81a\5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695.exe
Size 770KB
SHA256 5e8f829f348d20cd8787ff207733651d2fd41c806161b7a38473c1ceab75f695
MD5 69eb160a5fd50c6464096d1a67c3d235
SHA1 74acc835517bf6631b24c44486f80d07b7bf153f
SHA512 e6acd87d6d57a1515ae8eca318241136b847d3ec2e36b2aa36c70ba8ced9d510f8204afdb518b2f1edf92de9a23f56705e2a804a780e0359d1fa716ed2a58019
SSDEEP 12288:7+l0naGYKVor4MXhp0P7sj2U1OFO8gWRuLSJnHHlPF0guh7TZ:7+l0dY54Opv20KOoeAnf
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1032-21-0x0000000003070000-0x000000000310F000-memory.dmp

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memory/1272-29-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1272-38-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1272-22-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1272-23-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1272-37-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1272-24-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1272-36-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1272-34-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1272-31-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1272-30-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3984-1-0x0000000002DC0000-0x0000000002E61000-memory.dmp

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memory/3984-3-0x0000000004A30000-0x0000000004B4B000-memory.dmp

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memory/4632-2-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4632-4-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4632-5-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4632-6-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4632-17-0x0000000000400000-0x0000000000537000-memory.dmp

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