djvu | 38bc13ef112b2f17d4d1a80243fac6a521b5d58228984aae0752d79487fa3b66

Resubmissions

15/04/2025, 17:34

250415-v5ylksypw9 10

15/04/2025, 06:16

14/04/2025, 08:06

14/04/2025, 07:59

14/04/2025, 07:22

14/04/2025, 07:16

11/04/2025, 21:39

01/04/2025, 21:24

Analysis

max time kernel
144s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
14/04/2025, 08:06

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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 8 IoCs

resource	yara_rule
behavioral26/memory/244-2-0x0000000006E20000-0x0000000006F3A000-memory.dmp	family_djvu
behavioral26/memory/244-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral26/memory/244-16-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral26/memory/244-15-0x0000000006E20000-0x0000000006F3A000-memory.dmp	family_djvu
behavioral26/memory/244-14-0x0000000000400000-0x0000000004F0E000-memory.dmp	family_djvu
behavioral26/memory/4784-24-0x0000000000400000-0x0000000004F0E000-memory.dmp	family_djvu
behavioral26/memory/4784-27-0x0000000000400000-0x0000000004F0E000-memory.dmp	family_djvu
behavioral26/memory/4784-28-0x0000000000400000-0x0000000004F0E000-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-1-5-21-3342763580-2723508992-2885672917-1000\Control Panel\International\Geo\Nation	starticon3.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1984	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-1-5-21-3342763580-2723508992-2885672917-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\5e57c461-cbbf-4476-bc0a-581abff6ac41\\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
20	api.2ip.ua
21	api.2ip.ua
27	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
1688	244	WerFault.exe	85

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
244	starticon3.exe
244	starticon3.exe
4784	starticon3.exe
4784	starticon3.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 244 wrote to memory of 1984	244	starticon3.exe	93
PID 244 wrote to memory of 1984	244	starticon3.exe	93
PID 244 wrote to memory of 1984	244	starticon3.exe	93
PID 244 wrote to memory of 4784	244	starticon3.exe	94
PID 244 wrote to memory of 4784	244	starticon3.exe	94
PID 244 wrote to memory of 4784	244	starticon3.exe	94

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:244
- C:\Windows\SysWOW64\icacls.exe
  icacls "C:\Users\Admin\AppData\Local\5e57c461-cbbf-4476-bc0a-581abff6ac41" /deny *S-1-1-0:(OI)(CI)(DE,DC)
  2⤵
  - Modifies file permissions
  - System Location Discovery: System Language Discovery
  PID:1984
- 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:4784
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 244 -s 2040
  2⤵
  - Program crash
  PID:1688

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 244 -ip 244
1⤵
PID:4996

Network

MITRE ATT&CK Enterprise v16

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
4a90329071ae30b759d279cca342b0a6

SHA1
0ac7c4f3357ce87f37a3a112d6878051c875eda5

SHA256
fb6a7c3edcd7b97fabc18855102a39fc4d6d3f82c0fdd39b1667807b71b9c49b

SHA512
f0e206053d4369437c2c0f1f90f0fd03d631e4b9859d807049b41efde823d64cf4d75c28316d932360f7c03bd409e923c8bc2d4f5959361feacecfcf101ae823

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

Filesize
530B

MD5
1fbb37f79b317a9a248e7c4ce4f5bac5

SHA1
0ff4d709ebf17be0c28e66dc8bf74672ca28362a

SHA256
6fb1b8e593cb0388f67ead35313a230f524657317ea86271b3a97362e5ec6ad9

SHA512
287e1d62c9ceb660965c266f677c467fbb997c2f5dcd1d63e185e266488aafc3489ac1d3feec81d10f01ce4a72e61a8bc4e124f137ce8675a220aa7797002e74

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

Filesize
174B

MD5
d04e5dff83a45d25269210f88e3e56fc

SHA1
cfc838b610894fe84347c393652a4ffe15a5f92e

SHA256
e4b793bbe78ec07eceb8bdfab83e29c1844aa6b6629f2fea79abd8e5f0a75fdf

SHA512
f9912235dd23f7d4a40e412504ad9f6bce68cf6dc4fb98ffdefe800fb5864949d3e9601e41df8bce24e50a38abcbe5f0f82eeea6431a1df1cc818e7d64f86f59

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

Filesize
170B

MD5
947cf60f7e462e18eff2a2e43b23ab06

SHA1
b35a9a1e67955352711c4ce3d4baac553d002e03

SHA256
5fd601703cbf5a513e20e0e5314d46516b26becc4ad2a66d5af830cfb53c132c

SHA512
52511e4a4fb07df592aafef15218b5a64a246fec62d6424a912b014c6444428a8f95d767aa26d55fafa5a07fc98245721d4026dd781bf7a0c18d0f7692967e31

Download Submit
C:\Users\Admin\AppData\Local\5e57c461-cbbf-4476-bc0a-581abff6ac41\starticon3.exe

Filesize
725KB

MD5
e8bbb6d921b79101aea7d906a1798f3d

SHA1
4fd59822cdedd1b194d27d2c01a9cde6222de1bb

SHA256
7bc2928ce06e7db7bfe0bf3f2c2d2ff9df7f0a8041ea8c593dd0b912c1c3d3fd

SHA512
c525e07c65c7be43aa90568f98253b397919cd0f597b1ba446fed51a578ca1aae4c93fa59e1345b20e3216a676ba35c89c67d6ced6bea68da44a53989fa4d656

Download Submit
memory/244-15-0x0000000006E20000-0x0000000006F3A000-memory.dmp

Filesize
1.1MB

Download
memory/244-14-0x0000000000400000-0x0000000004F0E000-memory.dmp

Filesize
75.1MB

Download
memory/244-16-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/244-1-0x0000000006C80000-0x0000000006D21000-memory.dmp

Filesize
644KB

Download
memory/244-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/244-2-0x0000000006E20000-0x0000000006F3A000-memory.dmp

Filesize
1.1MB

Download
memory/4784-24-0x0000000000400000-0x0000000004F0E000-memory.dmp

Filesize
75.1MB

Download
memory/4784-27-0x0000000000400000-0x0000000004F0E000-memory.dmp

Filesize
75.1MB

Download
memory/4784-28-0x0000000000400000-0x0000000004F0E000-memory.dmp

Filesize
75.1MB

Download