djvu | 38bc13ef112b2f17d4d1a80243fac6a521b5d58228984aae0752d79487fa3b66

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01/03/2025, 18:58

250301-xmhhrayp15 10

01/03/2025, 18:55

250301-xkqrcaypx7 10

Analysis

max time kernel
141s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
04/12/2024, 19:31

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General

Target

starticon3.exe
Size

725KB
MD5

e8bbb6d921b79101aea7d906a1798f3d
SHA1

4fd59822cdedd1b194d27d2c01a9cde6222de1bb
SHA256

7bc2928ce06e7db7bfe0bf3f2c2d2ff9df7f0a8041ea8c593dd0b912c1c3d3fd
SHA512

c525e07c65c7be43aa90568f98253b397919cd0f597b1ba446fed51a578ca1aae4c93fa59e1345b20e3216a676ba35c89c67d6ced6bea68da44a53989fa4d656
SSDEEP

12288:O7q+wuEST6sxwGCwuwn5vE2nyrJppqrNSP9kdrzA9PpXtuRt2BoivOnJztu3vdyB:CqrFvGjF5iZqrQag1t7+nJztuHi

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://ring1.ug/As73yhsyU34578hxxx/SDf565g/get.php

Attributes

extension
.coot
offline_id
MRQ5kb5Z12tWuP3e25YoRt4PRDrJd2yuI3coott1
payload_url
http://ring1.ug/files/cost/updatewin1.exe

http://ring1.ug/files/cost/updatewin2.exe

http://ring1.ug/files/cost/updatewin.exe

http://ring1.ug/files/cost/3.exe

http://ring1.ug/files/cost/4.exe

http://ring1.ug/files/cost/5.exe
ransomnote
ATTENTION! Don't worry, you can return all your files! All your files like photos, 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-IbdGyCKhdr 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: 0175Asd374y5iuhld

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 10 IoCs

resource	yara_rule
behavioral24/memory/1792-2-0x0000000006E40000-0x0000000006F5A000-memory.dmp	family_djvu
behavioral24/memory/1792-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral24/memory/1792-12-0x0000000000400000-0x0000000004F0E000-memory.dmp	family_djvu
behavioral24/memory/1792-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral24/memory/1792-14-0x0000000006E40000-0x0000000006F5A000-memory.dmp	family_djvu
behavioral24/memory/1792-13-0x0000000000400000-0x0000000004F0E000-memory.dmp	family_djvu
behavioral24/memory/4432-21-0x0000000000400000-0x0000000004F0E000-memory.dmp	family_djvu
behavioral24/memory/4432-22-0x0000000000400000-0x0000000004F0E000-memory.dmp	family_djvu
behavioral24/memory/4432-24-0x0000000000400000-0x0000000004F0E000-memory.dmp	family_djvu
behavioral24/memory/4432-26-0x0000000000400000-0x0000000004F0E000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Djvu family
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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	starticon3.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2304	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-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\7a476725-87dd-470e-896f-17a56effaee5\\starticon3.exe\" --AutoStart"	starticon3.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
27	api.2ip.ua
16	api.2ip.ua
17	api.2ip.ua

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2756	1792	WerFault.exe	80

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	starticon3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	starticon3.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1792	starticon3.exe
1792	starticon3.exe
4432	starticon3.exe
4432	starticon3.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1792 wrote to memory of 2304	1792	starticon3.exe	85
PID 1792 wrote to memory of 2304	1792	starticon3.exe	85
PID 1792 wrote to memory of 2304	1792	starticon3.exe	85
PID 1792 wrote to memory of 4432	1792	starticon3.exe	86
PID 1792 wrote to memory of 4432	1792	starticon3.exe	86
PID 1792 wrote to memory of 4432	1792	starticon3.exe	86

C:\Users\Admin\AppData\Local\Temp\starticon3.exe
"C:\Users\Admin\AppData\Local\Temp\starticon3.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:1792
- C:\Windows\SysWOW64\icacls.exe
  icacls "C:\Users\Admin\AppData\Local\7a476725-87dd-470e-896f-17a56effaee5" /deny *S-1-1-0:(OI)(CI)(DE,DC)
  2⤵
  - Modifies file permissions
  - System Location Discovery: System Language Discovery
  PID:2304
- C:\Users\Admin\AppData\Local\Temp\starticon3.exe
  "C:\Users\Admin\AppData\Local\Temp\starticon3.exe" --Admin IsNotAutoStart IsNotTask
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:4432
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1792 -s 2144
  2⤵
  - Program crash
  PID:2756

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1792 -ip 1792
1⤵
PID:1512

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
67e486b2f148a3fca863728242b6273e

SHA1
452a84c183d7ea5b7c015b597e94af8eef66d44a

SHA256
facaf1c3a4bf232abce19a2d534e495b0d3adc7dbe3797d336249aa6f70adcfb

SHA512
d3a37da3bb10a9736dc03e8b2b49baceef5d73c026e2077b8ebc1b786f2c9b2f807e0aa13a5866cf3b3cafd2bc506242ef139c423eaffb050bbb87773e53881e

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
bf3fceab2c002dae29619a697cd28f30

SHA1
dbf6755f5e997f9cf9c490f1df09cc5f99df54ef

SHA256
55dbe515022ba8cc47b3d2ae70548e85e1cc4b2e73e71e64a716c9bb8ef16b3c

SHA512
42624112b91e496c619335e9a9db3bdbba8ddc3a9078d46a86d3a11ab2a655f8eb0fad947c367b95a1fb0153f9725e72fcc8d462616af2774d6350c7f3db4281

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

Filesize
170B

MD5
a22f82b327418bd0ea2655bf100c2644

SHA1
2a4eb460fd63004182c3d3fdace7f9956d00c332

SHA256
423220863e53f65b235a8a47157c8d614362ac12f4b4d3bc8f7d3e57dc7e25e2

SHA512
2e4995acfebaffdef8f84c0c1049b4a308a21c6a604ea267a4e2cd90ba32f464489195b24abf6a0921419c2c09496a9dd94e7136ed7e03036f60cb2d45201ea4

Download Submit
C:\Users\Admin\AppData\Local\7a476725-87dd-470e-896f-17a56effaee5\starticon3.exe

Filesize
725KB

MD5
e8bbb6d921b79101aea7d906a1798f3d

SHA1
4fd59822cdedd1b194d27d2c01a9cde6222de1bb

SHA256
7bc2928ce06e7db7bfe0bf3f2c2d2ff9df7f0a8041ea8c593dd0b912c1c3d3fd

SHA512
c525e07c65c7be43aa90568f98253b397919cd0f597b1ba446fed51a578ca1aae4c93fa59e1345b20e3216a676ba35c89c67d6ced6bea68da44a53989fa4d656

Download Submit
memory/1792-12-0x0000000000400000-0x0000000004F0E000-memory.dmp

Filesize
75.1MB

Download
memory/1792-14-0x0000000006E40000-0x0000000006F5A000-memory.dmp

Filesize
1.1MB

Download
memory/1792-13-0x0000000000400000-0x0000000004F0E000-memory.dmp

Filesize
75.1MB

Download
memory/1792-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1792-2-0x0000000006E40000-0x0000000006F5A000-memory.dmp

Filesize
1.1MB

Download
memory/1792-1-0x0000000006C50000-0x0000000006CEA000-memory.dmp

Filesize
616KB

Download
memory/1792-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4432-21-0x0000000000400000-0x0000000004F0E000-memory.dmp

Filesize
75.1MB

Download
memory/4432-22-0x0000000000400000-0x0000000004F0E000-memory.dmp

Filesize
75.1MB

Download
memory/4432-24-0x0000000000400000-0x0000000004F0E000-memory.dmp

Filesize
75.1MB

Download
memory/4432-26-0x0000000000400000-0x0000000004F0E000-memory.dmp

Filesize
75.1MB

Download