djvu | ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85

General

Target

ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
Size

730KB
MD5

bc6655ccf33cfd0dd499054513c69a2c
SHA1

9dd92e5b1cb79c9f9158a37059c67876235ed032
SHA256

ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85
SHA512

5cfa5fd8299d945c25a1a543e47ef55f89d2f34ef8f9e75251c04c1e849f05dd1cd6ec5ef4eb2b1062ecc95d02575924d7ed685c7faee11d0a5de8cb40dab38a
SSDEEP

12288:W8D4D5r0l3uNAN5ixN5NFTEklgM6JBQYQ/BTFluzRq8yQa+bN:W8lQAN5uvN1EWgxUplt8VNB

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.vehu
offline_id
EGfa5svnSGFJka7LZBQoqff0QtO1IpTauoDvGvt1
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/33b490a613f49fa190924f199d2c079e20240512191214/caaf73 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: 0872PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2740-2-0x0000000004A70000-0x0000000004B8B000-memory.dmp	family_djvu
behavioral1/memory/112-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/112-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/112-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/112-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/112-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/5116-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/5116-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/5116-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/5116-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/5116-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/5116-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/5116-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/5116-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/5116-35-0x0000000000400000-0x0000000000537000-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:

ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

4960 icacls.exe

pid	process
4960	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\4a3eb098-1050-4e56-a0c5-5904e60809ce\\ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe\" --AutoStart"	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.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

7 api.2ip.ua
8 api.2ip.ua
19 api.2ip.ua

flow	ioc
7	api.2ip.ua
8	api.2ip.ua
19	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exece8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe

description	pid	process	target process
PID 2740 set thread context of 112	2740	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 2020 set thread context of 5116	2020	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.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:

ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exece8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe

pid	process
112	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
112	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
5116	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
5116	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exece8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exece8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe

C:\Users\Admin\AppData\Local\Temp\ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
"C:\Users\Admin\AppData\Local\Temp\ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2740

C:\Users\Admin\AppData\Local\Temp\ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
"C:\Users\Admin\AppData\Local\Temp\ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:112

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\4a3eb098-1050-4e56-a0c5-5904e60809ce" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:4960

C:\Users\Admin\AppData\Local\Temp\ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
"C:\Users\Admin\AppData\Local\Temp\ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2020

C:\Users\Admin\AppData\Local\Temp\ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
"C:\Users\Admin\AppData\Local\Temp\ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:5116

Network

MITRE ATT&CK Matrix ATT&CK v13

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

1

T1222

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

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

MD5
8df6dedd4dd10eb8211463f82b129e29

SHA1
ffc6e51cf829b481d789d8e3e61f6c7096fbde3e

SHA256
a8400cc21263f2c44ccb301a3a1ef66a1ff009fd4d301362fd778e7b23a386d8

SHA512
25fd6d8684ff8db3d40a8fe33267fd01d6456a84f81c7e579f7508c36558cf731a0ec8a2999a539aa5c1985dc45f7bd20d2a14a343b2326030941858f24c57f4

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
3db1ab1b32543e34b19a66dcca0c5ea3

SHA1
5a9d3589d1d83889fb899b795ecb7b87d5a682bf

SHA256
5e1a18cd5495ad593fb6dae1fffb6a121b76010eb1611f8913b48ee7cf8d7d99

SHA512
45430e7b12b68c05cbe52f22bf1ff01fde896cfc37a19917f072d4204ac166ee84997620eb30e42fcbeae814fb508bc1c795ec1534e968f0f50092748ca65011

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

MD5
0f59eefcc574cafec2b331e13bfc1ec8

SHA1
204c7ac80081f2ba7efc2fc929e90d580a1576dd

SHA256
10f8dd211080237a13ebc9fb7bb5575907ee3ee14b920632d98abe24c3f58106

SHA512
0f7992792d528805515907bdf7c4193c8e429d7e184c0e9537ad8f5ce170bfd8864c63b719f17b701848a8b73a9a85f060db7469d577db724c9a20b308dd14b9

Download Submit
C:\Users\Admin\AppData\Local\4a3eb098-1050-4e56-a0c5-5904e60809ce\ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
Filesize
730KB

MD5
bc6655ccf33cfd0dd499054513c69a2c

SHA1
9dd92e5b1cb79c9f9158a37059c67876235ed032

SHA256
ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85

SHA512
5cfa5fd8299d945c25a1a543e47ef55f89d2f34ef8f9e75251c04c1e849f05dd1cd6ec5ef4eb2b1062ecc95d02575924d7ed685c7faee11d0a5de8cb40dab38a

Download Submit
memory/112-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/112-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/112-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/112-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/112-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2740-2-0x0000000004A70000-0x0000000004B8B000-memory.dmp

Filesize
1.1MB

Download
memory/2740-1-0x0000000002EF0000-0x0000000002F85000-memory.dmp

Filesize
596KB

Download
memory/5116-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5116-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5116-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5116-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5116-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5116-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5116-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5116-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5116-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 2740 wrote to memory of 112	2740	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 2740 wrote to memory of 112	2740	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 2740 wrote to memory of 112	2740	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 2740 wrote to memory of 112	2740	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 2740 wrote to memory of 112	2740	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 2740 wrote to memory of 112	2740	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 2740 wrote to memory of 112	2740	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 2740 wrote to memory of 112	2740	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 2740 wrote to memory of 112	2740	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 2740 wrote to memory of 112	2740	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 112 wrote to memory of 4960	112	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	icacls.exe
PID 112 wrote to memory of 4960	112	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	icacls.exe
PID 112 wrote to memory of 4960	112	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	icacls.exe
PID 112 wrote to memory of 2020	112	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 112 wrote to memory of 2020	112	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 112 wrote to memory of 2020	112	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 2020 wrote to memory of 5116	2020	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 2020 wrote to memory of 5116	2020	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 2020 wrote to memory of 5116	2020	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 2020 wrote to memory of 5116	2020	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 2020 wrote to memory of 5116	2020	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 2020 wrote to memory of 5116	2020	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 2020 wrote to memory of 5116	2020	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 2020 wrote to memory of 5116	2020	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 2020 wrote to memory of 5116	2020	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 2020 wrote to memory of 5116	2020	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads