djvu | 9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0

General

Target

9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe
Size

763KB
MD5

4f8fb134c680d0e05861a34827751834
SHA1

5a20d1ff30218dea67d3ff7f61e16e5cc958006f
SHA256

9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0
SHA512

ba90af804408ffde34cb5b7d8d4a4b30ea99f66844ee3d272368086a3bae472347c76440fe93196a457e4fbc10a67b6312a998fd8d30a06001c4b635838fee35
SSDEEP

12288:S13ahbKvq4YIvjnARDUsrD4Shv9QSrwZ/BpOtI7wWsvvaGDXRorYm+0FPSoyWHJk:NJ49sHv9zsZ/B0tWFoXRorg0BSFWHJPc

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://cajgtus.com/test1/get.php

Attributes

extension
.bgjs
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: 0863PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 17 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2424-2-0x0000000005D60000-0x0000000005E7B000-memory.dmp	family_djvu
behavioral2/memory/4544-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4544-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4544-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4544-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4544-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1856-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1856-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1856-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1856-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1856-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1856-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1856-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1856-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1856-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1856-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1856-37-0x0000000000400000-0x0000000000537000-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:

9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\Control Panel\International\Geo\Nation	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

4848 icacls.exe

pid	process
4848	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\e1721e27-a4b7-4638-8cc3-514d7c5f54b8\\9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe\" --AutoStart"	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.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

31 api.2ip.ua
9 api.2ip.ua
19 api.2ip.ua

flow	ioc
31	api.2ip.ua
9	api.2ip.ua
19	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe

description	pid	process	target process
PID 2424 set thread context of 4544	2424	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe
PID 2740 set thread context of 1856	2740	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.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:

9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe

pid	process
4544	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe
4544	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe
1856	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe
1856	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe

C:\Users\Admin\AppData\Local\Temp\9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe
"C:\Users\Admin\AppData\Local\Temp\9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2424

C:\Users\Admin\AppData\Local\Temp\9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe
"C:\Users\Admin\AppData\Local\Temp\9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4544

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\e1721e27-a4b7-4638-8cc3-514d7c5f54b8" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:4848

C:\Users\Admin\AppData\Local\Temp\9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe
"C:\Users\Admin\AppData\Local\Temp\9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2740

C:\Users\Admin\AppData\Local\Temp\9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe
"C:\Users\Admin\AppData\Local\Temp\9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:1856

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

MD5
f8ed6292d6d2f9514668acec50849d17

SHA1
482745d97c48b32fd986e488d169ac4eb7edd737

SHA256
a7760866eaf849b079815652f9dce9eb9ec7c599199bc65c7030ca9e2ed91c26

SHA512
ebc265c4a27c4a1d14ef783b28f3cb0de9ca4f28795078c3d80bf2ec6574c4e8f3f3c7c68197b1ea6f037cb88268cfab99817660f442696167120bc6275cad4f

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
6fea7e90c4e3b3b6e4d2605e68fa10fc

SHA1
0279942fdfc6429d460b4a051f139e4264fa84ce

SHA256
254deb26ff9f4a890b8af9d125dc3251e469dd555fcf10ef4d6c29d4a11f530d

SHA512
8e71dae1cbbfefa5474f843e08b2d9bcb0be1f79066a0d6734830b6c8ad0201ef7851a2a460b18e30fe9135521bbe6e16ab18f34d97595057d5f9292bb537ab2

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

MD5
b57bc7ac0a9e6f81fe5101cfb8461c9e

SHA1
6e2e59671251b99f9bb84e2ff1f17e35fa35c683

SHA256
86d0444f8d5adca932c21c65a18f6f80a28f00bb590fca91a1483cbe7716f4a8

SHA512
ee2e5b8e2205edc1b98eac959de1f3c03717b0c5712063dd872465fd2a2180406962bf9e6223b416e6a70a628a631449144088cbcb0f177d288e0c81e3f2b3ac

Download Submit
C:\Users\Admin\AppData\Local\e1721e27-a4b7-4638-8cc3-514d7c5f54b8\9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe
Filesize
763KB

MD5
4f8fb134c680d0e05861a34827751834

SHA1
5a20d1ff30218dea67d3ff7f61e16e5cc958006f

SHA256
9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0

SHA512
ba90af804408ffde34cb5b7d8d4a4b30ea99f66844ee3d272368086a3bae472347c76440fe93196a457e4fbc10a67b6312a998fd8d30a06001c4b635838fee35

Download Submit
memory/1856-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1856-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1856-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1856-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1856-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1856-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1856-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1856-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1856-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1856-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1856-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2424-1-0x0000000004520000-0x00000000045B3000-memory.dmp

Filesize
588KB

Download
memory/2424-2-0x0000000005D60000-0x0000000005E7B000-memory.dmp

Filesize
1.1MB

Download
memory/2740-18-0x00000000042F0000-0x000000000438B000-memory.dmp

Filesize
620KB

Download
memory/4544-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4544-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4544-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4544-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4544-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 2424 wrote to memory of 4544	2424	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe
PID 2424 wrote to memory of 4544	2424	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe
PID 2424 wrote to memory of 4544	2424	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe
PID 2424 wrote to memory of 4544	2424	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe
PID 2424 wrote to memory of 4544	2424	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe
PID 2424 wrote to memory of 4544	2424	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe
PID 2424 wrote to memory of 4544	2424	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe
PID 2424 wrote to memory of 4544	2424	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe
PID 2424 wrote to memory of 4544	2424	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe
PID 2424 wrote to memory of 4544	2424	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe
PID 4544 wrote to memory of 4848	4544	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe	icacls.exe
PID 4544 wrote to memory of 4848	4544	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe	icacls.exe
PID 4544 wrote to memory of 4848	4544	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe	icacls.exe
PID 4544 wrote to memory of 2740	4544	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe
PID 4544 wrote to memory of 2740	4544	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe
PID 4544 wrote to memory of 2740	4544	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe
PID 2740 wrote to memory of 1856	2740	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe
PID 2740 wrote to memory of 1856	2740	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe
PID 2740 wrote to memory of 1856	2740	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe
PID 2740 wrote to memory of 1856	2740	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe
PID 2740 wrote to memory of 1856	2740	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe
PID 2740 wrote to memory of 1856	2740	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe
PID 2740 wrote to memory of 1856	2740	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe
PID 2740 wrote to memory of 1856	2740	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe
PID 2740 wrote to memory of 1856	2740	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe
PID 2740 wrote to memory of 1856	2740	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe	9c9ed624eaf441b4637d50fe25d386636c5cb59fb69f5b824afc7cec6dfff7f0.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads