djvu | 9608129701213f7565040f385e8c263d0daaa01ce31dcc7f95a7584c7bf4ad44

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240730-en
resource tags

arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-x64system
submitted
31-07-2024 10:53

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General

Target

3763170476b8a4c3cb592cbea6c4471ba2ea2463db9f7839fda502ef0a06b092.exe
Size

831KB
MD5

06cc2c58b35393afd830c6d37d22f4e2
SHA1

f4abeeb4441b7842101c5f907881179cc938f9c7
SHA256

3763170476b8a4c3cb592cbea6c4471ba2ea2463db9f7839fda502ef0a06b092
SHA512

fc866e39af2d7ddde6e3d6ffd2935077ae20d407aea84ec2e3cfd80f4974719b042408bbc6b1a33b7ab25967119d482098c88f03e867cf9afc61e31d94d03f4c
SSDEEP

12288:aw1CY4ZqwXfGMjsuTVr4Tyj0j2tVTmK0biPL5Gl4UoxLlmMCvbGu3XHMPm:CYuqwXTj/rky1tCiPL5GElmMwHsu

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://jfus.top/nddddhsspen6/get.php

Attributes

extension
.rejg
offline_id
ffMYeEIl8VXTNtDFDB8XTask2PZgkOrOTmhHKet1
payload_url
http://jfus.top/files/penelop/updatewin1.exe

http://jfus.top/files/penelop/updatewin2.exe

http://jfus.top/files/penelop/updatewin.exe

http://jfus.top/files/penelop/3.exe

http://jfus.top/files/penelop/4.exe

http://jfus.top/files/penelop/5.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. You can get and look video overview decrypt tool: https://we.tl/t-t9u4WFnEtN Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. 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: 0295Sirj

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 10 IoCs

resource	yara_rule
behavioral1/memory/3728-2-0x0000000002600000-0x000000000271A000-memory.dmp	family_djvu
behavioral1/memory/3728-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3728-16-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3728-14-0x0000000000400000-0x00000000008C8000-memory.dmp	family_djvu
behavioral1/memory/3728-15-0x0000000002600000-0x000000000271A000-memory.dmp	family_djvu
behavioral1/memory/2152-18-0x0000000000400000-0x00000000008C8000-memory.dmp	family_djvu
behavioral1/memory/2152-19-0x0000000000400000-0x00000000008C8000-memory.dmp	family_djvu
behavioral1/memory/2152-26-0x0000000000400000-0x00000000008C8000-memory.dmp	family_djvu
behavioral1/memory/2152-29-0x0000000000400000-0x00000000008C8000-memory.dmp	family_djvu
behavioral1/memory/2152-31-0x0000000000400000-0x00000000008C8000-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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2077438316-259605770-1264560426-1000\Control Panel\International\Geo\Nation	3763170476b8a4c3cb592cbea6c4471ba2ea2463db9f7839fda502ef0a06b092.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2628	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2077438316-259605770-1264560426-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\ca8dd626-2a87-408a-85ed-595f9d9c5a2e\\3763170476b8a4c3cb592cbea6c4471ba2ea2463db9f7839fda502ef0a06b092.exe\" --AutoStart"	3763170476b8a4c3cb592cbea6c4471ba2ea2463db9f7839fda502ef0a06b092.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.

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

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3763170476b8a4c3cb592cbea6c4471ba2ea2463db9f7839fda502ef0a06b092.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3763170476b8a4c3cb592cbea6c4471ba2ea2463db9f7839fda502ef0a06b092.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3728	3763170476b8a4c3cb592cbea6c4471ba2ea2463db9f7839fda502ef0a06b092.exe
3728	3763170476b8a4c3cb592cbea6c4471ba2ea2463db9f7839fda502ef0a06b092.exe
2152	3763170476b8a4c3cb592cbea6c4471ba2ea2463db9f7839fda502ef0a06b092.exe
2152	3763170476b8a4c3cb592cbea6c4471ba2ea2463db9f7839fda502ef0a06b092.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3728 wrote to memory of 2628	3728	3763170476b8a4c3cb592cbea6c4471ba2ea2463db9f7839fda502ef0a06b092.exe	85
PID 3728 wrote to memory of 2628	3728	3763170476b8a4c3cb592cbea6c4471ba2ea2463db9f7839fda502ef0a06b092.exe	85
PID 3728 wrote to memory of 2628	3728	3763170476b8a4c3cb592cbea6c4471ba2ea2463db9f7839fda502ef0a06b092.exe	85
PID 3728 wrote to memory of 2152	3728	3763170476b8a4c3cb592cbea6c4471ba2ea2463db9f7839fda502ef0a06b092.exe	86
PID 3728 wrote to memory of 2152	3728	3763170476b8a4c3cb592cbea6c4471ba2ea2463db9f7839fda502ef0a06b092.exe	86
PID 3728 wrote to memory of 2152	3728	3763170476b8a4c3cb592cbea6c4471ba2ea2463db9f7839fda502ef0a06b092.exe	86

C:\Users\Admin\AppData\Local\Temp\3763170476b8a4c3cb592cbea6c4471ba2ea2463db9f7839fda502ef0a06b092.exe
"C:\Users\Admin\AppData\Local\Temp\3763170476b8a4c3cb592cbea6c4471ba2ea2463db9f7839fda502ef0a06b092.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3728
- C:\Windows\SysWOW64\icacls.exe
  icacls "C:\Users\Admin\AppData\Local\ca8dd626-2a87-408a-85ed-595f9d9c5a2e" /deny *S-1-1-0:(OI)(CI)(DE,DC)
  2⤵
  - Modifies file permissions
  - System Location Discovery: System Language Discovery
  PID:2628
- C:\Users\Admin\AppData\Local\Temp\3763170476b8a4c3cb592cbea6c4471ba2ea2463db9f7839fda502ef0a06b092.exe
  "C:\Users\Admin\AppData\Local\Temp\3763170476b8a4c3cb592cbea6c4471ba2ea2463db9f7839fda502ef0a06b092.exe" --Admin IsNotAutoStart IsNotTask
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:2152

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

File and Directory Permissions Modification

T1222

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12

Filesize
1KB

MD5
7fb5fa1534dcf77f2125b2403b30a0ee

SHA1
365d96812a69ac0a4611ea4b70a3f306576cc3ea

SHA256
33a39e9ec2133230533a686ec43760026e014a3828c703707acbc150fe40fd6f

SHA512
a9279fd60505a1bfeef6fb07834cad0fd5be02fd405573fc1a5f59b991e9f88f5e81c32fe910f69bdc6585e71f02559895149eaf49c25b8ff955459fd60c0d2e

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8

Filesize
436B

MD5
971c514f84bba0785f80aa1c23edfd79

SHA1
732acea710a87530c6b08ecdf32a110d254a54c8

SHA256
f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895

SHA512
43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12

Filesize
174B

MD5
226deb8aedc14b636b51cf1976a04ae1

SHA1
9f322c3f5871b5da69b5c50c869ffc32f84fe8a3

SHA256
8b83aaf95e909512f8d4ab98a3135d5d253f24aa2e07198e952e88d0d5dcaf27

SHA512
efdcf4821d8bf7aea295a98e39604259e1ced05b80f9d8141b011b44ccfe8e23147a271e927a95ab68a6d934eae644b89f2ce7bf1930e3ce138c25b5ba5a9ec1

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8

Filesize
170B

MD5
a6d42870528ffe6baa6e8e3ce39fd348

SHA1
9cb51bc99bc1c5b5543491c85683c04f173fd267

SHA256
a3e809a7c55a158629332980a69489f71af6a5390491d16cc2222d751b5a9e19

SHA512
714ec526d4a9dfc8c8e92ff49cf87ded5644b1f9bb17a9bef2a304b4c230f05eac4c1465e349786923f43c7b7b32b168ed77d417838c7a70be16a0bc19a9c360

Download Submit
C:\Users\Admin\AppData\Local\ca8dd626-2a87-408a-85ed-595f9d9c5a2e\3763170476b8a4c3cb592cbea6c4471ba2ea2463db9f7839fda502ef0a06b092.exe

Filesize
831KB

MD5
06cc2c58b35393afd830c6d37d22f4e2

SHA1
f4abeeb4441b7842101c5f907881179cc938f9c7

SHA256
3763170476b8a4c3cb592cbea6c4471ba2ea2463db9f7839fda502ef0a06b092

SHA512
fc866e39af2d7ddde6e3d6ffd2935077ae20d407aea84ec2e3cfd80f4974719b042408bbc6b1a33b7ab25967119d482098c88f03e867cf9afc61e31d94d03f4c

Download Submit
memory/2152-19-0x0000000000400000-0x00000000008C8000-memory.dmp

Filesize
4.8MB

Download
memory/2152-18-0x0000000000400000-0x00000000008C8000-memory.dmp

Filesize
4.8MB

Download
memory/2152-26-0x0000000000400000-0x00000000008C8000-memory.dmp

Filesize
4.8MB

Download
memory/2152-29-0x0000000000400000-0x00000000008C8000-memory.dmp

Filesize
4.8MB

Download
memory/2152-31-0x0000000000400000-0x00000000008C8000-memory.dmp

Filesize
4.8MB

Download
memory/3728-15-0x0000000002600000-0x000000000271A000-memory.dmp

Filesize
1.1MB

Download
memory/3728-1-0x00000000024D0000-0x0000000002563000-memory.dmp

Filesize
588KB

Download
memory/3728-14-0x0000000000400000-0x00000000008C8000-memory.dmp

Filesize
4.8MB

Download
memory/3728-16-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3728-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3728-2-0x0000000002600000-0x000000000271A000-memory.dmp

Filesize
1.1MB

Download