djvu | 6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7

General

Target

6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
Size

710KB
MD5

646219d918509f10f82be9002ab95378
SHA1

234aecb88c72e6f5225b682974d0f77053652e22
SHA256

6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7
SHA512

43fa079e53184cc9afaf94cf9286ff1e53de80f4aa543595477878d24cc902cd3c92d8d1c5575b90b54f8280e3da5ae16b38d39bd6cbaf7eb82991de2b4c7d7b
SSDEEP

12288:hriW19XMqzebBTyr958PivuPLmtLt5CMXWoXr9yvpunwfeCSnwt2Qbw2t5CxCp:hrj1e82yIquPLmpqMXpXBmbGCGK2qGx

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/1164-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3396-3-0x0000000004AB0000-0x0000000004BCB000-memory.dmp	family_djvu
behavioral2/memory/1164-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1164-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1164-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1164-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/248-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/248-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/248-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/248-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/248-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/248-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/248-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/248-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/248-41-0x0000000000400000-0x0000000000537000-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

1312 icacls.exe

pid	process
1312	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3062789476-783164490-2318012559-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\a0861954-190a-490e-8db4-c5bdae18bd9e\\6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe\" --AutoStart"	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.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

8 api.2ip.ua
1 api.2ip.ua
2 api.2ip.ua

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

Suspicious use of SetThreadContext 2 IoCs

Processes:

6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe

description	pid	process	target process
PID 3396 set thread context of 1164	3396	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 4944 set thread context of 248	4944	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.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:

6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe

pid	process
1164	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
1164	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
248	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
248	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe

C:\Users\Admin\AppData\Local\Temp\6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
"C:\Users\Admin\AppData\Local\Temp\6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3396

C:\Users\Admin\AppData\Local\Temp\6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
"C:\Users\Admin\AppData\Local\Temp\6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1164

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\a0861954-190a-490e-8db4-c5bdae18bd9e" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:1312

C:\Users\Admin\AppData\Local\Temp\6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
"C:\Users\Admin\AppData\Local\Temp\6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4944

C:\Users\Admin\AppData\Local\Temp\6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
"C:\Users\Admin\AppData\Local\Temp\6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:248

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
7575c39a544943a68ce6e709c586005a

SHA1
4874b30bd1d455b28a95c4e21c5aecd1ea043d7a

SHA256
4737de49245ace1ca1fdeaacd5feee9bbda88bc6f42c84a1ea7d316383792cf8

SHA512
abf3d85393725113e720cbe8980b369236511e3984e8cbfa795f19bb5d6e39822e80a835caeb498581797a74b349765ba1a27f26586a17a66ae1c88bd066a3d1

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
0aa0a2b9744251bf808d53b479c0f56e

SHA1
cab8629be656e8396576151077a8092c0a64fcd1

SHA256
b0b5623c234fa0a57f9b44397a7220569f082fffc6254f65489a0fd52760fdb3

SHA512
e16302ab1814795595a6a56a4c391c7b98c9ff1bd47fd6dd9667c2da698139a70230a1bd03668e6e95c8a1359b4cc35c9beb9e92b206a2a4ccee2ee08cd69f23

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

MD5
fc96626f9bfe91785042b78186c12426

SHA1
fe811e05ea4a8034737c1a69e2832b1429d4a262

SHA256
d93e1890e9e4413fe6d17e172ba12161690769dcfba79e05d22e407a92686357

SHA512
f2ae6d705958b4dd125b9f556fab84b4c9d3055178f143f26bcdaff8b798a36f717e765d48fbe74187deebe28cf80972159a772e01969df48f73a976a82ece55

Download Submit
C:\Users\Admin\AppData\Local\a0861954-190a-490e-8db4-c5bdae18bd9e\6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
Filesize
710KB

MD5
646219d918509f10f82be9002ab95378

SHA1
234aecb88c72e6f5225b682974d0f77053652e22

SHA256
6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7

SHA512
43fa079e53184cc9afaf94cf9286ff1e53de80f4aa543595477878d24cc902cd3c92d8d1c5575b90b54f8280e3da5ae16b38d39bd6cbaf7eb82991de2b4c7d7b

Download Submit
memory/248-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/248-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/248-41-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/248-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/248-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/248-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/248-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/248-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/248-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1164-2-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1164-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1164-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1164-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1164-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3396-1-0x0000000004A10000-0x0000000004AAD000-memory.dmp

Filesize
628KB

Download
memory/3396-3-0x0000000004AB0000-0x0000000004BCB000-memory.dmp

Filesize
1.1MB

Download

description	pid	process	target process
PID 3396 wrote to memory of 1164	3396	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 3396 wrote to memory of 1164	3396	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 3396 wrote to memory of 1164	3396	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 3396 wrote to memory of 1164	3396	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 3396 wrote to memory of 1164	3396	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 3396 wrote to memory of 1164	3396	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 3396 wrote to memory of 1164	3396	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 3396 wrote to memory of 1164	3396	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 3396 wrote to memory of 1164	3396	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 3396 wrote to memory of 1164	3396	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 1164 wrote to memory of 1312	1164	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	icacls.exe
PID 1164 wrote to memory of 1312	1164	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	icacls.exe
PID 1164 wrote to memory of 1312	1164	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	icacls.exe
PID 1164 wrote to memory of 4944	1164	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 1164 wrote to memory of 4944	1164	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 1164 wrote to memory of 4944	1164	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 4944 wrote to memory of 248	4944	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 4944 wrote to memory of 248	4944	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 4944 wrote to memory of 248	4944	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 4944 wrote to memory of 248	4944	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 4944 wrote to memory of 248	4944	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 4944 wrote to memory of 248	4944	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 4944 wrote to memory of 248	4944	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 4944 wrote to memory of 248	4944	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 4944 wrote to memory of 248	4944	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 4944 wrote to memory of 248	4944	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads