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
behavioral2/memory/2376-2-0x0000000004B00000-0x0000000004C1B000-memory.dmp	family_djvu
behavioral2/memory/4036-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4036-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4036-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4036-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4036-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/756-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/756-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/756-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/756-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/756-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/756-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/756-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/756-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/756-37-0x0000000000400000-0x0000000000537000-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

Processes:

icacls.exe

pid process

4652 icacls.exe

pid	process
4652	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-1-5-21-3001105534-2705918504-2956618779-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\adafd4d3-a63d-479e-ab42-569092c1098a\\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

1 api.2ip.ua
2 api.2ip.ua
7 api.2ip.ua

flow	ioc
1	api.2ip.ua
2	api.2ip.ua
7	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exece8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe

description	pid	process	target process
PID 2376 set thread context of 4036	2376	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 1580 set thread context of 756	1580	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
4036	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
4036	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
756	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
756	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:2376

C:\Users\Admin\AppData\Local\Temp\ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
"C:\Users\Admin\AppData\Local\Temp\ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4036

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\adafd4d3-a63d-479e-ab42-569092c1098a" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:4652

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:1580

C:\Users\Admin\AppData\Local\Temp\ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
"C:\Users\Admin\AppData\Local\Temp\ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:756

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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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
b42fdf564a783419b777e3212646c9fd

SHA1
d435bc171d313f97ee614ee54ee5d273a3051ac7

SHA256
85d5974eeadafbe9305b71f014dfa8e2067eb5e0696b401a69df0d13a0cc9a69

SHA512
cc2ad267575fec0d58876596dd8bc02be53b3a01ae330bd6d09d7f3a3c412d1d8dbf139b947d1e9cee092148b008827ae80e14ae73250f241b119c42e8d29535

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

MD5
d62f768babcca30bcd16183180e47f8e

SHA1
bd287af16ed5781a4e46474ae9dea6dd54cf3f60

SHA256
697141fd9302a1f21d862d40093e3d62c65d35e97149286f7f1e1ae48f351dcd

SHA512
52800ced1a8724f0aa718be02fbdf7fd2dcc67dc4e47d3c26f0cc32767383256f4e4444b289b91225083b3b2686c83603cd1820adf095fb8122a00e9f1b4a77f

Download Submit
C:\Users\Admin\AppData\Local\adafd4d3-a63d-479e-ab42-569092c1098a\ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
Filesize
730KB

MD5
bc6655ccf33cfd0dd499054513c69a2c

SHA1
9dd92e5b1cb79c9f9158a37059c67876235ed032

SHA256
ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85

SHA512
5cfa5fd8299d945c25a1a543e47ef55f89d2f34ef8f9e75251c04c1e849f05dd1cd6ec5ef4eb2b1062ecc95d02575924d7ed685c7faee11d0a5de8cb40dab38a

Download Submit
memory/756-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/756-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/756-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/756-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/756-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/756-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/756-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/756-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/756-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2376-1-0x0000000004A60000-0x0000000004AFC000-memory.dmp

Filesize
624KB

Download
memory/2376-2-0x0000000004B00000-0x0000000004C1B000-memory.dmp

Filesize
1.1MB

Download
memory/4036-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4036-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4036-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4036-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4036-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 2376 wrote to memory of 4036	2376	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 2376 wrote to memory of 4036	2376	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 2376 wrote to memory of 4036	2376	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 2376 wrote to memory of 4036	2376	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 2376 wrote to memory of 4036	2376	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 2376 wrote to memory of 4036	2376	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 2376 wrote to memory of 4036	2376	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 2376 wrote to memory of 4036	2376	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 2376 wrote to memory of 4036	2376	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 2376 wrote to memory of 4036	2376	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 4036 wrote to memory of 4652	4036	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	icacls.exe
PID 4036 wrote to memory of 4652	4036	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	icacls.exe
PID 4036 wrote to memory of 4652	4036	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	icacls.exe
PID 4036 wrote to memory of 1580	4036	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 4036 wrote to memory of 1580	4036	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 4036 wrote to memory of 1580	4036	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 1580 wrote to memory of 756	1580	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 1580 wrote to memory of 756	1580	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 1580 wrote to memory of 756	1580	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 1580 wrote to memory of 756	1580	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 1580 wrote to memory of 756	1580	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 1580 wrote to memory of 756	1580	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 1580 wrote to memory of 756	1580	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 1580 wrote to memory of 756	1580	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 1580 wrote to memory of 756	1580	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe	ce8155f38779b5e5cb6664f80e13e908c37653134a2387cff5e12ff06f828e85.exe
PID 1580 wrote to memory of 756	1580	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