djvu | 61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4

General

Target

61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe
Size

751KB
MD5

4c82c2cdc5e9e56cbe36e976fc14277f
SHA1

cca5ca77c4d67cdc8174472f3bdb1f3a3176befb
SHA256

61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4
SHA512

7714b088869ac124564e840922ec74c948a41a19c03235ad14ce13daa55bef0316ebf6ef3675da9f527b7421519aa7edf2988c46bfa1b51e17d1aeecbad69892
SSDEEP

12288:EpL3PIjiYPYBRUhUtq0SDePrziEY/2d7XkiLN5VOY2/NL69DOWEfj:ER3gsvUmdzPYuRXkiLN5sY2/NADOWk

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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 17 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1908-2-0x0000000004B10000-0x0000000004C2B000-memory.dmp	family_djvu
behavioral1/memory/1980-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1980-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1980-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1980-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1980-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/740-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/740-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/740-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/740-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/740-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/740-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/740-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/740-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/740-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/740-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/740-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

64 icacls.exe

pid	process
64	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4084619521-2220719027-1909462854-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\98259756-e6ea-480d-8f0b-89af30659c20\\61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe\" --AutoStart"	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.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.

Processes:

flow ioc

20 api.2ip.ua
22 api.2ip.ua
45 api.2ip.ua

flow	ioc
20	api.2ip.ua
22	api.2ip.ua
45	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe

description	pid	process	target process
PID 1908 set thread context of 1980	1908	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe
PID 1180 set thread context of 740	1180	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe

pid	process
1980	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe
1980	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe
740	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe
740	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe

C:\Users\Admin\AppData\Local\Temp\61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe
"C:\Users\Admin\AppData\Local\Temp\61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1908

C:\Users\Admin\AppData\Local\Temp\61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe
"C:\Users\Admin\AppData\Local\Temp\61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1980

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\98259756-e6ea-480d-8f0b-89af30659c20" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:64

C:\Users\Admin\AppData\Local\Temp\61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe
"C:\Users\Admin\AppData\Local\Temp\61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1180

C:\Users\Admin\AppData\Local\Temp\61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe
"C:\Users\Admin\AppData\Local\Temp\61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:740

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

File and Directory Permissions Modification

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize
1KB

MD5
132a59b12289f608ea38eb370d498a8f

SHA1
0fd8a23d395d38719cb0b71ee10df56ce35a6c4c

SHA256
d6fcf2cd41b542b6d7ee6daa10cf080f4b6220cbce855be03d689d1ad080ed9b

SHA512
ea953e93faf4c78e1b9e3768a463f6b46548af00b430ebd275054f7da1e1f4c40746bd3ff4ca02c0fd107bf78b02b67069075939b719c00a7e4bc2f4ecb46da1

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize
724B

MD5
8202a1cd02e7d69597995cabbe881a12

SHA1
8858d9d934b7aa9330ee73de6c476acf19929ff6

SHA256
58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5

SHA512
97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize
410B

MD5
667004f398ee428b3f4c4dda7db5c8e8

SHA1
07e0af44be50744a451103cadf083db4dbd1be2d

SHA256
41a1094e1533fe0db6e4e3da9f9bc23ed5afe3041300ae61b44fe6709ffd8a19

SHA512
9b06fb57429c66ace9f8701cd7e1815ad8d45eb5433f9ada69c5e8839c9dfea024810ee03147e8bb664cf9abd7acbe1940676c1d717a3958b2c75cb3843baa5b

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize
392B

MD5
9f871b08338e58e31d81f63d59521be6

SHA1
1d45f31b26e76ae00bf5e3fd76768c6d87f539ad

SHA256
a98ff1f480012f615ae67cf25910e2d845b50a54e43841f1657e4de00ccdaa13

SHA512
ace2e33dbbf74658f5a50440a6ecc7c6c98453480527dc9a751ef3c2cf79e0bbb73f9d69a18eea3a1d292e7904b997534a6b17da8ae57a4fabb7c2212e3f9af2

Download Submit
C:\Users\Admin\AppData\Local\98259756-e6ea-480d-8f0b-89af30659c20\61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe
Filesize
751KB

MD5
4c82c2cdc5e9e56cbe36e976fc14277f

SHA1
cca5ca77c4d67cdc8174472f3bdb1f3a3176befb

SHA256
61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4

SHA512
7714b088869ac124564e840922ec74c948a41a19c03235ad14ce13daa55bef0316ebf6ef3675da9f527b7421519aa7edf2988c46bfa1b51e17d1aeecbad69892

Download Submit
memory/740-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/740-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/740-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/740-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/740-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/740-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/740-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/740-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/740-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/740-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/740-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1180-18-0x0000000002D30000-0x0000000002DCF000-memory.dmp

Filesize
636KB

Download
memory/1908-2-0x0000000004B10000-0x0000000004C2B000-memory.dmp

Filesize
1.1MB

Download
memory/1908-1-0x0000000003170000-0x000000000320A000-memory.dmp

Filesize
616KB

Download
memory/1980-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1980-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1980-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1980-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1980-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 1908 wrote to memory of 1980	1908	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe
PID 1908 wrote to memory of 1980	1908	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe
PID 1908 wrote to memory of 1980	1908	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe
PID 1908 wrote to memory of 1980	1908	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe
PID 1908 wrote to memory of 1980	1908	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe
PID 1908 wrote to memory of 1980	1908	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe
PID 1908 wrote to memory of 1980	1908	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe
PID 1908 wrote to memory of 1980	1908	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe
PID 1908 wrote to memory of 1980	1908	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe
PID 1908 wrote to memory of 1980	1908	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe
PID 1980 wrote to memory of 64	1980	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe	icacls.exe
PID 1980 wrote to memory of 64	1980	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe	icacls.exe
PID 1980 wrote to memory of 64	1980	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe	icacls.exe
PID 1980 wrote to memory of 1180	1980	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe
PID 1980 wrote to memory of 1180	1980	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe
PID 1980 wrote to memory of 1180	1980	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe
PID 1180 wrote to memory of 740	1180	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe
PID 1180 wrote to memory of 740	1180	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe
PID 1180 wrote to memory of 740	1180	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe
PID 1180 wrote to memory of 740	1180	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe
PID 1180 wrote to memory of 740	1180	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe
PID 1180 wrote to memory of 740	1180	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe
PID 1180 wrote to memory of 740	1180	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe
PID 1180 wrote to memory of 740	1180	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe
PID 1180 wrote to memory of 740	1180	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe
PID 1180 wrote to memory of 740	1180	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe	61cd170ba706cbf8fe485e4565096af1865f153f4710277d0ab6c19c4ca5c4d4.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads