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
behavioral1/memory/3764-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3764-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3764-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2804-4-0x0000000004A50000-0x0000000004B6B000-memory.dmp	family_djvu
behavioral1/memory/3764-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3764-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1152-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1152-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1152-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1152-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1152-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1152-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1152-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1152-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1152-39-0x0000000000400000-0x0000000000537000-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:

6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

5004 icacls.exe

pid	process
5004	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-1-5-21-2804150937-2146708401-419095071-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\0f569b10-d033-48de-b0ea-1403d94dc903\\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

6 api.2ip.ua
7 api.2ip.ua
18 api.2ip.ua

flow	ioc
6	api.2ip.ua
7	api.2ip.ua
18	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe

description	pid	process	target process
PID 2804 set thread context of 3764	2804	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 4716 set thread context of 1152	4716	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
3764	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
3764	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
1152	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
1152	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:2804
- C:\Users\Admin\AppData\Local\Temp\6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
  "C:\Users\Admin\AppData\Local\Temp\6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3764
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\0f569b10-d033-48de-b0ea-1403d94dc903" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:5004
- - 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:4716
  - - C:\Users\Admin\AppData\Local\Temp\6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
      "C:\Users\Admin\AppData\Local\Temp\6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:1152

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
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
ece978a90c09f3d4d404e983e043b0a6

SHA1
1e2c263ff661df3bd539a4068e3f1ffdac950bd1

SHA256
cc9f6574aac272553b92c6660147d5af46f0c076a26be8fd51fa2c323ffa6b10

SHA512
62185ae669a07205972c0413acd02d1c04ef2d18b1bb9858f8a1c6372cc0c3b591b5f30ed400146b89acd77ca07c399d9e4173bfdc93d976f7b2d1d051236af4

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

Filesize
392B

MD5
0524a5cedb48c47befb5e85a86a46f39

SHA1
a2aae060261ab0f257c5c38f03ed78b5f09407d1

SHA256
752b009d8a8423b4a5670dbd2bb6b8db520099f7ff160b14dc4acb3429d69ccb

SHA512
4c0126b07cc1128d8f54e1dbd02b3c509d76040043062b2c069467de5ac5e794d9a99c74aef144620bd66f091ea02c4ea9688c91bb3c036d83a9eff0e696b0f3

Download Submit
C:\Users\Admin\AppData\Local\0f569b10-d033-48de-b0ea-1403d94dc903\6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe

Filesize
710KB

MD5
646219d918509f10f82be9002ab95378

SHA1
234aecb88c72e6f5225b682974d0f77053652e22

SHA256
6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7

SHA512
43fa079e53184cc9afaf94cf9286ff1e53de80f4aa543595477878d24cc902cd3c92d8d1c5575b90b54f8280e3da5ae16b38d39bd6cbaf7eb82991de2b4c7d7b

Download Submit
memory/1152-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1152-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1152-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1152-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1152-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1152-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1152-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1152-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1152-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2804-1-0x0000000002ED0000-0x0000000002F6E000-memory.dmp

Filesize
632KB

Download
memory/2804-4-0x0000000004A50000-0x0000000004B6B000-memory.dmp

Filesize
1.1MB

Download
memory/3764-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3764-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3764-2-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3764-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3764-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 2804 wrote to memory of 3764	2804	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 2804 wrote to memory of 3764	2804	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 2804 wrote to memory of 3764	2804	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 2804 wrote to memory of 3764	2804	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 2804 wrote to memory of 3764	2804	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 2804 wrote to memory of 3764	2804	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 2804 wrote to memory of 3764	2804	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 2804 wrote to memory of 3764	2804	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 2804 wrote to memory of 3764	2804	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 2804 wrote to memory of 3764	2804	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 3764 wrote to memory of 5004	3764	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	icacls.exe
PID 3764 wrote to memory of 5004	3764	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	icacls.exe
PID 3764 wrote to memory of 5004	3764	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	icacls.exe
PID 3764 wrote to memory of 4716	3764	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 3764 wrote to memory of 4716	3764	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 3764 wrote to memory of 4716	3764	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 4716 wrote to memory of 1152	4716	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 4716 wrote to memory of 1152	4716	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 4716 wrote to memory of 1152	4716	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 4716 wrote to memory of 1152	4716	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 4716 wrote to memory of 1152	4716	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 4716 wrote to memory of 1152	4716	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 4716 wrote to memory of 1152	4716	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 4716 wrote to memory of 1152	4716	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 4716 wrote to memory of 1152	4716	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe
PID 4716 wrote to memory of 1152	4716	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe	6901a20b62e5cb987eeca25432860c17f775a6b5540c3308feb2bf10a25451b7.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads