djvu | 17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad

Analysis

max time kernel
293s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
07/05/2024, 22:28

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General

Target
17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe
Size 800KB
Sample240507-2dlw2abd3x
SHA256 17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad
MD5 f6cb9b42910cc0f064408c85c25f0b7c
SHA1 4b4f4fb53193f18b7fb73043c597b43f9f1a6f79
SHA512 4c1239263f6b55fd381ce14b0b3d10fb4bef4021d0ef6cd3fbbde416dc780c56f1d854c941e2168fdcd26747f608713dd48137274fe1b9598e256d724f3558ab
SSDEEP 12288:O4AZvFF3PFI7kCiFdv82Y6U44YzO2Q7uCFx294pKkGDU7//kSwNyuQ42rpdIGAcf:O4gFFf27kCAq44wjU6EYA7H/oyu8pEc
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.bgzq
offline_id
Z6iwSvCoAt8T8K2ROxecuXHPNHv7eDyWrc8Ks7t1
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/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: 0864PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 12 IoCs

resource	yara_rule
behavioral1/memory/1580-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1580-7-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2176-5-0x00000000044F0000-0x000000000460B000-memory.dmp	family_djvu
behavioral1/memory/1580-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1580-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2472-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2472-50-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2472-49-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2472-51-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2472-57-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2472-56-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2472-54-0x0000000000400000-0x0000000000537000-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
2688	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-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\42844fbd-ae53-4383-b8e5-c221e231fbf5\\17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe\" --AutoStart"	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.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
3	api.2ip.ua
4	api.2ip.ua
9	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2176 set thread context of 1580	2176	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	28
PID 2448 set thread context of 2472	2448	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	31

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
1580	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe
1580	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe
2472	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe
2472	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2176 wrote to memory of 1580	2176	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	28
PID 2176 wrote to memory of 1580	2176	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	28
PID 2176 wrote to memory of 1580	2176	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	28
PID 2176 wrote to memory of 1580	2176	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	28
PID 2176 wrote to memory of 1580	2176	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	28
PID 2176 wrote to memory of 1580	2176	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	28
PID 2176 wrote to memory of 1580	2176	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	28
PID 2176 wrote to memory of 1580	2176	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	28
PID 2176 wrote to memory of 1580	2176	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	28
PID 2176 wrote to memory of 1580	2176	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	28
PID 2176 wrote to memory of 1580	2176	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	28
PID 1580 wrote to memory of 2688	1580	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	29
PID 1580 wrote to memory of 2688	1580	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	29
PID 1580 wrote to memory of 2688	1580	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	29
PID 1580 wrote to memory of 2688	1580	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	29
PID 1580 wrote to memory of 2448	1580	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	30
PID 1580 wrote to memory of 2448	1580	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	30
PID 1580 wrote to memory of 2448	1580	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	30
PID 1580 wrote to memory of 2448	1580	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	30
PID 2448 wrote to memory of 2472	2448	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	31
PID 2448 wrote to memory of 2472	2448	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	31
PID 2448 wrote to memory of 2472	2448	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	31
PID 2448 wrote to memory of 2472	2448	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	31
PID 2448 wrote to memory of 2472	2448	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	31
PID 2448 wrote to memory of 2472	2448	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	31
PID 2448 wrote to memory of 2472	2448	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	31
PID 2448 wrote to memory of 2472	2448	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	31
PID 2448 wrote to memory of 2472	2448	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	31
PID 2448 wrote to memory of 2472	2448	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	31
PID 2448 wrote to memory of 2472	2448	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	31

C:\Users\Admin\AppData\Local\Temp\17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe
"C:\Users\Admin\AppData\Local\Temp\17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2176
- C:\Users\Admin\AppData\Local\Temp\17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe
  "C:\Users\Admin\AppData\Local\Temp\17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1580
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\42844fbd-ae53-4383-b8e5-c221e231fbf5" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2688
- - C:\Users\Admin\AppData\Local\Temp\17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe
    "C:\Users\Admin\AppData\Local\Temp\17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2448
  - - C:\Users\Admin\AppData\Local\Temp\17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe
      "C:\Users\Admin\AppData\Local\Temp\17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:2472

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

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 f263e10140fb4a167eca993c50d7594c2ccc6ea062ca5ba1a8bacd9e4b58c50b
MD5 0ad121eb0590cfde9080d870806665d0
SHA1 74eb781c5a407b96ee4ac217a4f75e8c5ba02be7
SHA512 50a7778a7ed4a5c80d84bb8bee1db04b886bd39491e0cc4bdf6858b679a81da7ebc72be5d9b88ac4503e4d8a9d98b3697bb874a6b4cbfc708631156256c3b805
MD5 SHA1 SHA512

Submit Download

94308059B57B3142E455B38A6EB92015

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Size 344B
SHA256 674749fbdd23ba21a1524d797c74097fd547ab1a159d1c664637bc71e3f496f7
MD5 0dc4ed2b4dd04f0d5c987bb7f71a4f55
SHA1 4a89ae7ac366243d2c2d4c0d4c3cd081bc93829d
SHA512 f66a75c145053b29a3ba6157ef69ec8b62d1fe69706aabe4d98b568d0adf5a4ce93c6e16a9762e9633940722b2a9e5e4d2e09d4b7a75ab25252cafa72d3aa7aa
MD5 SHA1 SHA512

Submit Download

CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 392B
SHA256 2b1057c93e2203adf58c1ba3d0b733374c5d5a7866600427d71415560b88eb78
MD5 5874b2abc0c11dc22af3c8104fd545a0
SHA1 1fbd086060345623c875903dc0f90a874945b534
SHA512 af7983aa9ff82bdf275993090ae1c70b9fdf6b0cca430928b92a89237ec971ba4077d31889448091999b751c6fe33c11ff28c04fec8a2188fa6b157878b1098f
MD5 SHA1 SHA512

Submit Download

17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe

Path C:\Users\Admin\AppData\Local\42844fbd-ae53-4383-b8e5-c221e231fbf5\17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe
Size 448KB
SHA256 4deeefc73689aa0aae9f227f3fe685a60890244d8312b352594e776351af746a
MD5 b2cc77fc98ad674fac41951f07f024c2
SHA1 ff5067fec8ca07a38f150d231b9347d9f910fdbe
SHA512 2603433b7633d63102eb77e5854ae5557eb36bdc39503ec0fde85dea1906fe7e6598311560f6be40c878a8e1bb7b567c4a6b4185b9a2afb577624472eb6758a5
SSDEEP 12288:O4AZvFF3PFI7kCiFdv82Y6U44YzO2Q7uCFx+:O4gFFf27kCAq44wjUK
MD5 SHA1 SHA512 SSDEEP

Submit Download

Cab17D4.tmp

Path C:\Users\Admin\AppData\Local\Temp\Cab17D4.tmp
Size 65KB
SHA256 c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d
MD5 ac05d27423a85adc1622c714f2cb6184
SHA1 b0fe2b1abddb97837ea0195be70ab2ff14d43198
SHA512 6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d
SSDEEP 1536:drFvD2YSE/sFDqV0FJJynkAhftCvMd3coa282frgW1qgNzU:drVDJSeaDqV0FJwLhVkr282fF5U
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1580-3-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1580-30-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1580-1-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

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memory/1580-7-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1580-8-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2176-5-0x00000000044F0000-0x000000000460B000-memory.dmp

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memory/2176-0-0x0000000002B90000-0x0000000002C22000-memory.dmp

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memory/2176-6-0x0000000002B90000-0x0000000002C22000-memory.dmp

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memory/2448-31-0x0000000000220000-0x00000000002B2000-memory.dmp

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memory/2472-50-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2472-49-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2472-34-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2472-51-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2472-57-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2472-56-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2472-54-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2472-58-0x0000000000400000-0x0000000000537000-memory.dmp

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